Alarm Interpretation

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ALARMS INTERPRETATION

SIGNAL NAME ALARM TEXT POSSIBLES CAUSES ACTIONS TO BE TAKEN

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BTGJ1_1_ALM BEARING METAL TEMP GEN #1 HIGH The generator bearing metal temperature #1 is very high Check bearing.

Check lube oil system and drain piping

BTGJ1_2_ALM BEARING METAL TEMP GEN

JOURNAL #1 HIGH

The generator bearing metal temperature (journal #1) is high

Check bearing.

BTGJ2_1_ALM BEARING METAL TEMP GEN #2 HIGH The generator bearing metal temperature #2 is very high Check bearing.

BTGJ2_2_ALM BEARING METAL TEMP GEN

JOURNAL #2 HIGH

The generator bearing metal temperature (journal #2) is high

Check bearing.

BTJ1_1_ALM BEARING METAL TEMP TURBINE

JOURNAL #1 HIGH The turbine bearing metal temperature (journal #1) is high

Check bearing.

JOURNAL #1 HIGH The turbine bearing metal temperature #1 is very high

Check bearing.

BTTA1_2_ALM BEARING METAL TEMP THRUST

ACTIVE 2 HIGH The bearing metal temperature (thrust active) is high

Check bearing.

BTTI1_2_ALM BEARING METAL TEMP THRUST

INACTIVE 2 HIGH The bearing metal temperature (thrust inactive) is high

Check bearing.

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Check bearing.

L12H_ACC_ALM PROTECTIVE MODULE

ACCELERATION TRIP _ HP

The speed control system has not limited turbine speed with the trip limits (fault detected by P module).

The turbine trips during the electrical over-speed test.

Determine and repair before restarting (mechanical, electrical or fuel or speed control trouble).

L12H_ALM ELECTRICAL OVERSPEED TRIP _ HP

The speed control system hF not limited turbine speed within the trip limits.

The turbine trips during the electrical over-speed test.

Determine and repair before restarting (mechanical, electrical or fuel or speed control trouble).

L12H_FLT_ALM LOSS OF PROTECTIVE HP SPEED

INPUTS Card VPRO fault Check the card VPRO in the module P

L12H_P_ALM PROTECTIVE MODULE OVERSPEED

TRIP _ HP Protective module over-speed fault.

Check the module over-speed (power supply, short, link, cut).

L12HBLT_ALM OVERSPEED BOLT TRIP _ HP The trip circuit has been tripped by mechanical over-speed

action.

Search the cause of this problem: Check electronic over-speed system.

Check proper operation and setting of over-speed bolt assembly.

Repair before starting and reset manually the mechanical over-speed limit switch on the over-speed bolt.

L12HF_ALM CONTROL SPEED SIGNAL LOSS _ HP

Control speed signal loss and the unit trips. Power supply fault, ground, short-circuit open. Speed magnetic pickups fault.

Check speed system. Check supply, connections. Check the logic circuit.

Check speed magnetic pickups.

L12HFD_C_ALM CONTROL SPEED SIGNAL TROUBLE

- HP Signal from speed sensors is faulty. Check speed sensors and wiring.

L12HFD_P_ALM PROTECTIVE SPEED SIGNAL

TROUBLE - HP Signal from speed sensors is faulty. Check speed sensors and wiring.

L20FTY_ALM CRUDE TO DIST FUEL XFER FAULT Transfer valve fault Check proper operation of transfer valve

Check limit switch.

L20FTZ_ALM DIST TO CRUDE FUEL XFER FAULT Transfer valve fault Check proper operation of transfer valve

Check limit switch.

L25A_ENAB_AL K25A RELAY HAS NOT BEEN

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L26AAH_ALM ATOMIZING AIR TEMP. HIGH Temperature high at the atomizing air compressor input.

Check water supply to the atomizing air pre-cooler, isolating valve position flow restrictions.

Check proper operation of thermostatic valve VTR_2 and temperature switch 26AA_1.

L26AAL_ALM ATOMIZING AIR TEMPERATURE LOW Temperature high at the atomizing air compressor input.

Check water supply to the atomizing air pre-cooler, isolating valve position flow restrictions.

Check proper operation of thermostatic valve VTR_2 and temperature switch 26AA_1.

L26BW_ALM ON LINE WATER WASH TEMP NOT

OK On line temp NOT OK Check heater system

L26CR1H_ALM CRANKING MOTOR TEMP HIGH

PHASE 1

The temperature of the phase R of the cranking motor is high

Check the phases R of the cranking motor Check the electrical circuit

L26CR1HH_ALM CRANKING MOTOR TEMP VERY

HIGH PHASE 1 TRIP

The temperature of the phase R of the cranking motor is high

Check the phases R of the cranking motor Check the electrical circuit

PHASE 2

The temperature of the phase S of the cranking motor is high

Check the phases S of the cranking motor Check the electrical circuit

HIGH PHASE 2 TRIP

The temperature of the phase S of the cranking motor is high

Check the phases S of the cranking motor Check the electrical circuit

PHASE 3

The temperature of the phase T of the cranking motor is high

Check the phases T of the cranking motor Check the electrical circuit

HIGH PHASE 3 TRIP

The temperature of the phase T of the cranking motor is high

Check the phases T of the cranking motor Check the electrical circuit

L26CTH_ALM CONTROL PANEL TEMPERATURE

HIGH Air conditioners not maintaining proper temperature.

Check air conditioners (proper operation, power supply). Clean the air conditioner filters, if necessary.

Check the proper operation of the thermocouple 26 CT.

NOTE:

The control compartment doors must be closed.

L26FDH_ALM DISTILLATE FUEL TEMPERATURE

HIGH The temperature of the distillate fuel is too high.

Check the temperature switch 26 FD_1. Check the forwarding distillate fuel system.

Check the heater system of the distillate fuel (if used).

L26FDL_ALM GAS OIL HEATER _ TEMPERATURE

LOW

The temperature of the gas oil is low. Temperature switch fault.

Check the proper operation of the temperature switch 26 FD_1.

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L26FDLY_ALM LIQUID FUEL TEMPERATURE

MEASURE FAULT The temperature of the liquid fuel is faulty.

Check the temperature switch 26 FD_1. Check the forwarding distillate fuel system.

Check the heater system of the distillate fuel (if used).

L26FDPT1H_ALM FUEL PUMP #1 TEMPERATURE

FAULT Fuel pump #1 temperature fault Check the pump # 1

L26FDPT2H_ALM FUEL PUMP #2 TEMPERATURE

FAULT Fuel pump #2 temperature fault Check the pump # 2

L26FTGH_ALM GAS FUEL TEMPERATURE HIGH Gas fuel temperature very is high.

Check the proper operation of the temperature switch FTG.

Check the gas skid (motor, fan, circuit, etc…)

L26FTH_ALM HEAVY FUEL TEMP. MEASURE

FAULT The measure of the heavy fuel temperature is faulty. Check temp sensor.

L26FU1H_ALM

HEAVY FUEL OIL HIGH TEMPERATURE DURING HFO OPERATION

heavy fuel oil temperature is faulty.

Check the temperature measure system of the heavy fuel oil

Check RTD

L26FU1L_ALM LIQUID FUEL TEMP LOWER THAN

HEAT TRACING SETPOINT Liquid fuel temperature is too low.

Check the temperature measure system of the liquid fuel Check RTD "ftl"

.

L26FU2LA_ALM HEAVY FUEL TEMPERATURE LOW Heavy fuel temperature is too low. Check the temperature measure system of the heavy fuel.

L26FUPT1H_ALM HIGH TEMPERATURE INSIDE PUMP

P201 - CHANGE OVER Liquid fuel temperature is too high.

Check the temperature measure system of the heavy fuel Check RTD fupt1

L26FUPT2H_ALM HIGH TEMPERATURE INSIDE PUMP

P202 - CHANGE OVER Liquid fuel temperature is too high.

Check the temperature measure system of the heavy fuel Check RTD fupt2.

L26GGC1_ALM GEN COLD AIR TEMP HIGH Generator cold gas temperature high Check cooling and sealing system

L26GGC2_ALM GEN COLD AIR TEMP VERY HIGH

SHUTDOWN Generator cold gas temperature high shutdown Check cooling and sealing system

L26GGH1_ALM GEN HOT AIR TEMP HIGH Generator hot gas temperature high Check cooling and sealing system

L26GGH2_ALM GEN HOT AIR TEMP VERY HIGH

SHUTDOWN Generator hot gas temperature high Normal shutdown Check cooling and sealing system

L26GS10T12HA GEN STATOR WIND. CENT. TEMP

HIGH #10-11-12

Generator Overload

2 of 3 Generator RTDs failure

Decrease the generator load

Check RTD and associated connections

L26GS1HH_ALM GEN STATOR WIND. CENT. TEMP

VERY HIGH #1-2-3

Generator Overload

L26GS1T3H_AL GEN STATOR WINDING CENTER

TEMP HIGH #1-2-3

Generator Overload

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VERY HIGH #4-5-6

Generator Overload

VERY HIGH #7-8-9

Generator Overload

VERY HIGH #10-11-12

Generator Overload

TEMP HIGH #4-5-6

Generator Overload

TEMP HIGH #7-8-9

Generator Overload

L26HA11HH_AL HEAT VENT VERY HIGH TEMP. IN

DLN COMPARTMENT DLN compartment temperature very high Start cooling fans

L26HA11LL_AL HEAT VENT VERY LOW TEMP. IN DLN

COMPARTMENT DLN compartment temperature very low Check cooling fans

L26HAHH_ALM HEAT VENT VERY HIGH TEMP. IN

AUXILIARY COMPARTMENT Accessories compartment temperature high Start cooling fans

L26HALL_ALM HEAT VENT VERY LOW TEMP. IN

AUXILIARY COMPARTMENT Heating and ventilation fault Check heating and ventilation system

L26HGHH_ALM HEAT VENT HIGH TEMP. IN LOAD

COMPARTMENT Heat vent very high temp. In load compartment Check cooling and sealing system

L26HGLL_ALM HEAT VENT VERY LOW TEMP. IN

LOAD COMPARTMENT Heat vent very low temp. In load compartment Check cooling and sealing system

L26HTHH_ALM HEAT VENT VERY HIGH TEMP. IN

TURBINE COMPARTMENT Gas turbine compartment temperature high Start cooling fans

L26HTLL_ALM HEAT VENT VERY LOW TEMP. IN

TURBINE COMPARTMENT Turbine compartment temperature low. Check the ventilation system.

L26PMBT1L_AL PERF MONIT INSTRUM BOX #1 TEMP

VERY LOW

Performance monitoring instrumentation box #1 temperature regulation fault

Check performance monitoring instrumentation box #1 temperature regulation

L26PMBT2L_AL PERF MONIT INSTRUM BOX #2 TEMP

VERY LOW

Performance monitoring instrumentation box #2 temperature regulation fault

Check performance monitoring instrumentation box #2 temperature regulation

L26QA_ALM LUBE OIL HEADER TEMP. HIGH Lube header temperature above recommended limits. (See

piping schematic).

Check for proper operation of the lube oil heat exchangers, cooling water fans (proper rotation) and temperature regulating valve VTR_1.

Check for proper operation of the temperature switch 26 QA_1.

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L26QN_ALM LUBE OIL TANK TEMP. LOW Lube tank temperature below recommended limits (see piping schematic).

Check for proper operation of the lube oil tank heaters. Starting is inhibited if the header temperature is low. Check for proper operation of the temperature switch 26QN_1.

L26QT_ALM LUBE OIL HEADER TEMP. HIGH TRIP Lube header temperature above recommended limits.

Check for proper operation of the lube oil heat exchangers, cooling water fans (proper operation) and temperature regulating valve VTR_1.

Check the temperature switches 26 QT_1A and 26 QT_1B setting points.

L26WC_FLT COOLING WATER TEMPERATURE

FAULT Cooling water temperature fault.

Check the proper operation of the temperature sensor. Check the cooling water system.

L26WCHH_ALM COOLING WATER TEMPERATURE

VERY HIGH

Cooling water system fault. Pipes, radiators are dirty. Cooling fan motor fault. Temperature sensor fault. Leakage.

Check cooling water system (fan motor, radiator, cleanliness of circuit, skid).

Check the proper operation of the temperature sensor 26 WC.

Check the correct circulation of the water in the circuit. Check the proper operation of the water pump.

L26WP1_ALM WASTE TANK TEMPERATURE HIGH Waste tank temperature high Check waste tank

L26WRHH_ALM WATER INJECTION COMPARTMENT

TEMPRATURE VERY HIGH

Water injection compartment temperature fault. Thermocouple fault.

Check the thermocouple AT-WI-1. (Wiring, connection, etc…).

L26WRLL_ALM WATER INJECTION COMPARTMENT

TEMPERATURE VERY LOW

Water injection compartment temperature fault. Thermocouple fault.

Check the thermocouple AT-WI-1. (Wiring, connection, etc…).

L27BLN11_ALM BATTERY CHARGER AC

UNDERVOLTAGE

Battery charger AC under-voltage. Charger faulty.

Check battery charger AC breaker. Check voltage magnitude.

Check the proper operation of the battery charger.

UNDERVOLTAGE

L27BLN21_ALM BATTERY CHARGER # 2 AC

UNDERVOLTAGE

Battery charger # 2 AC under-voltage. Charger faulty.

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UNDERVOLTAGE

L27BN_12_ALM AC BUS NORMAL INFORMATIONS

MISMATCH Bus synchronizing potential not available.

Check bus PT fuses and wiring. Do not use auto synchronizing or manual synchronizing until problem is resolved.

Check relay 27B_1,2.

L27BN_ALM BUS UNDERVOLTAGE - NO AUTO

SYNCH Bus synchronizing potential not available.

L27BP1N_ALM DC SUPPLY #1 CRITICAL FAULT DC supply #1 critical fault

Check relays 27B_1.

L27BP2N_ALM DC SUPPLY #2 CRITICAL FAULT DC supply #2 critical fault

Check relays 27B_2.

L27BZ_12_ALM AC BUS UNDERVOLTAGE

INFORMATIONS MISMATCH Bus synchronizing potential not available.

L27DZ_ALM BATTERY DC UNDERVOLTAGE

Battery system voltage is low.

Battery charger is not functioning properly. Excessive drain on the batteries.

Bad cells in battery.

Check battery charger for proper operation, correct excessive drain on battery, check for bad cells. Check battery charger fuses.

NOTE:

The gas turbine should not be operated unless DC power is available to the emergency DC lube oil pump.

L27GPP1_ALM GEN PROTECTION MOD 1 125V

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L27GPP2_ALM GEN PROTECTION MOD 2 125V

SUPPLY FAULT Gen protection mod2 125v supply fault Check power supply

L27GRDAC_ALM GAS DETECT RACK 230 VAC POWER

SPPLY FLT Gas detect rack 230 VAC power supply fault Check power supply 230 VAC of gas detection module

L27GRDDC_ALM GAS DETECT RACK 125 VDC POWER

SPPLY FLT Gas detect rack 125 VDC power supply fault Check power supply 125 VDC of gas detection module

L27MC1AN_ALM MCC UNDERVOLTAGE Motor control center under-voltage.

Check that power is supplied to the motor control center. Check 380 V on the bus bars.

Check breaker: transformer supply 16 KVA and the transformer.

Check relay 27 MC.

L27MC1N_ALM MCC UNDERVOLTAGE Motor control center under-voltage.

Check relay 27 MC.

L27MC2N_ALM MCC UNDERVOLTAGE Motor control center under-voltage.

Check relay 27 MC.

L27N_ALM NORMAL SUPPLY LOW VOLTAGE Normal incoming under-voltage Check Normal power supply 415 VAC at the Normal entry

of MCC

L27QEL_ALM DC MOTOR UNDERVOLTAGE (LUBE

OIL)

DC power not supplied to emergency DC pump. 125 VDC supply fault.

Pump fault Breaker opens.

Check power to DC lube pump (MCC breaker on). Check the fuses and the relay 27 QE.

Check the proper operation of pump motor. Check the mechanical status of the pump.

NOTE:

The gas turbine should not be operated unless DC power is available to the emergency DC lube pump.

L27S_ALM STAND BY SUPPLY LOW VOLTAGE Emergency incoming under-voltage Check Emergency power supply 415 VAC at the

Emergency entry of MCC

L27TF_ALM INLET FITER POWER SUPPLY FAULT The power supply of the inlet filter is faulty Check the power supply

L27X1_ALM G60A PROTECTION POWER SUPPLY

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L27X2_ALM G60B PROTECTION POWER SUPPLY

FAULT G60B protection power supply fault-trip Check power supply

L27X3_ALM T60A PROTECTION POWER SUPPLY

FAULT T60A protection power supply fault-trip Check power supply

L28FD_ALM FLAME DETECTOR TROUBLE One of the detectors operating when no flame is present or

flame detection before the firing sequence.

Check for proper operation of the flame detection system. Check that the flame detectors quartz windows are clean. Repair or replace if necessary.

L28FD_SD CHAMBER FLAMED OUT DURING

SHUTDOWN Chamber flamed out during shutdown.

Check the fuel supply and the fuel control. Check the fuel nozzles.

L28FDT_ALM LOSS OF FLAME - TRIP Failure of flame detectors or loss of flame.

Check for following: fuel being supplied to the combustors, flame in all chambers, damaged crossfire tubes, or combustors.

Check for proper control valve position and fuel pressure. Check for proper operation of the flame detectors 28 FD.

L2SFT_ALM START_UP FUEL FLOW EXCESSIVE

TRIP

On the liquid fuel circuit: Fuel leakage.

Fuel loop system fault. On the gas fuel circuit:

Purchaser gas supplies low pressure. Loss of the pressure between VSR and VGC. Gas leakage.

Transmitters fault.

On the liquid fuel circuit: Check for leakage.

Check tripping setting point. Check fuel loop system operation.

Check the operation of the bypass versus the control signal.

On the gas fuel circuit:

Check the purchaser gas supply.

Check the opening of the transmitters isolation valves. Check the transmitters 96 FG_2A, 2B and 2C.

Check the LVDT setting value and the calibration of the valve VSR.

L30AAT_ALM ATOMIZING AIR TEMPERATURE

FAULT

Atomizing air temperature fault. Thermocouples fault.

Check the thermocouples AAT-1A and 2A. (Wiring, connection, etc…).

L30AC_APU_AL AIR PROCESSING UNIT FAULT Air processing unit problem Check air processing unit

L30AC1_ALM 400VAC POWER SUPPLY FAULT #1 Power supply 400VAC fault Check 400VAC power supply

L30AC2_ALM 230VAC NORMAL POWER SUPPLY

FAULT #2 230VAC normal power supply fault #2 Check 230VAC normal power supply

L30AC3_ALM 230VAC UPS POWER SUPPLY FAULT

#3 230VAC UPS power supply fault #3 Check 230VAC UPS power supply

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L30BT_ALM TURBINE COMPARTMENT

VENTILATION FAULT The turbine compartment ventilation is faulty.

Check the ventilation system of this compartment (power supply, motors, fans, electrical circuit...).

Check the position of the vent flap.

L30BTA_ALM BEARING METAL TEMPERATURE

HIGH The temperature of the bearing metal is high.

Check the lube oil collector temperature.

Research the thermocouple, which occurred this alarm. Check the indications of it.

L30BTX_ALM TURBINE COMPARTMENT VENT.

CHANGE OVER

Air fan changeover.

Turbine compartment air fan fault.

Check the air fan system (power supply, motors, fans, relay, electrical circuit...).

L30BW_ALM WASHING SKID FAULT The washing skid is faulty. Check the washing skid.

L30CBC_ALM COMP BLD VLV FAILURE TO OPEN The compressor bleed valve failed to open. Check the proper operation of the purge valve.

L30CC_ALM FIRE PROTECTION SYSTEM

TROUBLE Fire protection system problem.

Check the power supply of fire protection system. Check fire detectors and the electrical circuit. This trouble must be corrected as soon as possible.

NOTE:

Before this search, the fire protection must be inhibited. Do not forget to put again in service as soon as the maintenance is finished.

Refer to specific chapters for more information about the fire protection.

L30CD_ALM COOLDOWN TROUBLE

Unit failed to go on cool-down, or the cool-down cycle was aborted prior to cool-down timer timeout

Trouble during the cool-down sequence. Turning gear motor fault.

Supply fault

Check the turning gear system. Check the voltage supplies.

Check the proper operation of the turning gear motor 88TG.

L30COM_EXFLT EXCITER TO MKVI COMMUNICATION

FAULT Exciter to mkVI communication fault Check power supply

L30COMM_IO_R VCMI IO STATE EXCHANGE FOR <R>

FAILED No more communication with R controller

Check R controller is on Check R controller is OK

Check the 3 IONet cables are OK

Check IONet cable is connected on the R controller VCMI board

L30D_CTRL_OT CONTROLLER OVERTEMPERATURE Controller overtemperature Refer to specific chapter.

L30DBEXX_ALM EXCITER FAIL - ABORTING DB

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L30DC1_ALM 125VDC POWER SUPPLY FAULT #1

ALARM 115 VDC MCC voltage lost

Check 115 VDC MCC electrical circuit Check voltage feeding

L30DPFLT_ALM DEW POINT TEMPERATURE SENSOR

FAULT Dew point temperature sensor fault Change dew point temperature sensor

L30EX_FSP EXCITER FAILURE TO STOP Exciter failure to stop Check exciter cubicle

L30EX_FTS EXCITER FAILURE TO START Exciter failure to stop Check exciter cubicle

L30EX_RS EXCITER NOT READY TO START Exciter not ready to start Check the condition to start

L30FAX_ALM CRUDE OIL FWD SMOKE INHIBITION

PUMP CHANGE OVER For information For information

L30FAX1_ALM HEAVY FUEL ADDITIVE PUMP #1

FAULT Heavy Fuel Additive pump #1 fault Check the pump # 1

L30FAX2_ALM HEAVY FUEL ADDITIVE PUMP #1

FAULT Heavy Fuel Additive pump #2 fault Check the pump # 2

L30FC1_ALM COOLING WATER FAN 1 ELECTRICAL

TROUBLE The motor of the cooling water system fan #1 is faulty

Check electrical circuit Check motor fan #1

L30FC2_ALM COOLING WATER FAN 2 ELECTRICAL

TROUBLE The motor of the cooling water system fan #2 is faulty

Check electrical circuit Check motor fan #2

L30FD_ALM FAILURE TO IGNITE Failure to fire within the one-minute period.

Check that AC power is supplied to the ignition system. Check the fuel supply.

Check if isolating valves on flame detectors are open. Check the proper operation of spark plugs and flame detectors.

L30FDX1_ALM FUEL FORWARDING PUMP #1 FAULT Fuel forwarding pump #1 fault Check. Fuel forwarding pump #1

L30FDX2_ALM FUEL FORWARDING PUMP #2 FAULT Fuel forwarding pump #2 fault Check. Fuel forwarding pump #2

L30FORCED_ALM FORCED LOGIC SIGNAL DETECTED One alarm or more is forced Unforced all the alarms

L30FPG2L_ALM GAS FUEL INTERVALVE PRESSURE

(P2) LOW

The high line inter-valve ventilation is faulty. Emergency motor fault

Power supply fault

Check gas compartment ventilation. Check motors.

Check mechanical status of fans. Check pressure switches.

L30FUX_ALM CRUDE OIL FWD CRUDE OIL

FORWARDING PUMP FAULT Pump, motor fault.

Check the pump and corresponding motor Check if the motor is supplied.

Check the pipes, valves, and filters, purge vents, leaks. Check the pressure switches (operation and setting).

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L30FUX1_ALM HEAVY FUEL FEEDING PUMP #1 FAULT

Motor fault Power supply fault Pump fault

Check the mechanical status of the motor and the pump Check what the circuit is correctly positioned

Check the supply of the motor drawer and the motor Check the fuses, breaker and the connection of the motor

L30FUX2_ALM HEAVY FUEL FEEDING PUMP #2

FAULT See alarm : L30FUX1_ALM See alarm : L30FUX1_ALM

L30G60A_ALM GLOBAL ALARM FROM G60A Global alarm from G60A Check G60A

L30G60B_ALM GLOBAL ALARM FROM G60B Global alarm from G60B. Check G60B

L30GGC_ALM GEN COLD AIR TEMP FAULT Generator RTD fault. Check RTD and associated connections for proper signal

and replace faulty RTD.

L30GGH_ALM GEN HOT AIR TEMP FAULT Generator temperature fault Check cooling and sealing system

L30GRD_ALM GAS DETECTION RACK SYSTEM

FAULT Gas detection rack system fault

Check the gas detection rack

Refer to the specific chapter about maintenance

L30GSC10T12A GEN STATOR WINDING CENTER

TEMP SNSR FLT #10-11-12 Sensors fault detection

Check RTD and associated connections for proper signal and replace faulty RTD.

L30GSC1T3_AL GEN STATOR WINDING CENTER

L30HA11X_ALM HEAT VENT DLN COMPARTMENT

HEATER IN TROUBLE Heat vent DLN compartment heater in trouble Check heat vent DLN compartment heater

L30HAX_ALM

HEAT VENT AUXILIARY COMPARTMENT HEATER IN TROUBLE

Heat vent auxiliary compartment heater in trouble Check heat vent auxiliary compartment heater

L30HEATR_ALM HEATER NOT DESIGNED TO RUN GT

ON - STOP HEATER Discrepancy between start order and feedback Check feedback match with heater status

L30HG1X_ALM HEAT VENT LOAD COMPARTMENT

HEATER IN TROUBLE Heat vent load compartment heater in trouble. Check the heater.

L30HTX_ALM

HEAT VENT TURBINE COMPARTMENT HEATER IN TROUBLE

Heat vent turbine compartment heater in trouble Check heat vent turbine compartment heater

L30JS_ALM HEAT VENT WATER INJ COMP VENT.

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L30JSX_ALM HEAT VENT WI COMPARTMENT

VENT. CHANGE OVER

Air fan changeover.

Water injection compartment air fan fault.

Check the air fan system (power supply, motors, fans, relay, electrical circuit...).

L30LOAH_ALM BEARING DRAIN TEMPERATURE

HIGH

Bearing fault. Lube oil fault.

Lube oil cooling system fault. Leakage.

Check lube oil feed and drain piping Check bearings and lube oil system. Check thermocouples.

Check lube oil cooling.

Check the correct circulation of the lube oil. Check for leakage.

L30LOAHH_ALM BEARING DRAIN TEMPERATURE

HIGH See alarm : L30LOAH_ALM See alarm : L30LOAH_ALM

L30LSI_ALM AIRCRAFT WARNING LIGHT ALARM Aircraft warning ligh alarm For information

L30LTA LOAD TUNNEL TEMPERATURE HIGH

Automatic shutdown. Ventilation system fault. Thermocouple fault.

Check the proper operation of ventilation system. Check the operation of the ventilators (rotation). Check the operation of the motors 88 TK1 and 2. Check the thermocouple TT_IB_1 (connection, short-circuit, cut off, position).

Check the sealing and the cleanliness of the pipes.

L30LTTH_ALM LUBE OIL THERMOCOUPLE FAULT Thermocouple fault Check the proper operation of thermocouples LTTH1 to 3.

L30MRSYNC_AL SYNC INHIBITED-MAN (FVR) REG

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L30PPDA_125P_ALM PPDA 125V PBUS FEED FAULT

Voltage failure Fuse fault

Wrong barcode in software Wrong firmware loaded in IO pack

IO pack Ethernet link or power supply disconnected

Check alarm number in GEH-6721 vol II

Check board power supply is correctly connected, else connect it.

Check IO pack Ethernet link or power supply is correctly connected (Leds on IO pack must be active), else connect it.

Check IR port of the IO pack is protected by its metallic plate, else turn the plate until IR port is hidden.

Check barcode is identical on board and inside IO hardware configuration in the software, else change barcode number, build and download.

Check firmware is correct in the IO pack, else download again the firmware with actual ToolbowST release. Check electrical cables are not cut, else replace cables. Check fuse have not melt, if yes, replace fuse.

Check voltage is present, if not, re start power supply.

L30PPDA_AC_IN_1_ALM PPDA AC INPUT 1 FAULT See : L30PPDA_125P_ALM See : L30PPDA_125P_ALM

L30PPDA_AC_IN_2_ALM PPDA AC INPUT 2 FAULT See : L30PPDA_125P_ALM See : L30PPDA_125P_ALM

L30PPDA_JPDD_125V_ALM PPDA/JPDD 125V POWER FEED

FAULT See : L30PPDA_125P_ALM See : L30PPDA_125P_ALM

L30PPDA_PBUS_R_ALM PPDA <R> PBUS NOT REGULATING See : L30PPDA_125P_ALM See : L30PPDA_125P_ALM

L30PPDA_PBUS_S_ALM PPDA <S> PBUS NOT REGULATING See : L30PPDA_125P_ALM See : L30PPDA_125P_ALM

L30PPDA_PBUS_T_ALM PPDA <T> PBUS NOT REGULATING See : L30PPDA_125P_ALM See : L30PPDA_125P_ALM

L30PPDA_SRC_R_ALM PPDA <R> PBUS SOURCE FAULT See : L30PPDA_125P_ALM See : L30PPDA_125P_ALM

L30PPDA_SRC_S_ALM PPDA <S> PBUS SOURCE FAULT See : L30PPDA_125P_ALM See : L30PPDA_125P_ALM

L30PPDA_SRC_T_ALM PPDA <T> PBUS SOURCE FAULT See : L30PPDA_125P_ALM See : L30PPDA_125P_ALM

L30QB1_ALM GENERATOR BRG LIFT PUMPS

ELECTRICAL FAULT The lift pumps are faulty

Check the generator bearing system (power supply, pumps, electrical circuit...).

Check the pressure switch.

L30QV_ALM OIL MIST ELIMINATOR FAULT The oil mist separator fan motor is in trouble. Check the relay 51 QV.

Check the motor 88 QV (proper operation).

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L30SPA COMBUSTION TROUBLE Faulty thermocouples, gas path hardware or uneven

distribution of fuel to the fuel nozzles.

Analyze data for trends. At earliest shutdown, check thermocouples.

Perform bore scope or combustion inspection. Check flow divider, fuel pressures.

Check for plugged nozzles.

L30SPT HIGH EXHAUST TEMP. SPREAD TRIP Faulty thermocouples, gas path parts or uneven distribution

of fuel to the fuel nozzles.

Analyze data for trends. Perform bore scope or combustion inspection.

Check flow divider, fuel pressures. Check for plugged nozzles.

L30SPTA EXHAUST THERMOCOUPLE

TROUBLE Faulty thermocouple.

Check thermocouples and wiring. Change if necessary.

L30T60A_ALM T60A GLOBAL A T60A global alarm Check T60A

L30TWW_ALM WATER WASH

INHIBIT_WHEELSPACE TEMP. HIGH

The washing procedure is inhibited because the wheel-space temperature is too high.

Thermocouples fault.

Check the temperature and wait for an adequate wheel-space temperature.

Check the thermocouples.

L30TXA_ALM EXHAUST TEMPERATURE HIGH

The exhaust gas temperature is excessive. Thermocouples fault.

Fuel control system fault. Ventilation system fault.

Check all thermocouples. Replace any bad thermocouples.

If problem is not thermocouples, isolate portion of control system causing problem.

Check the temperature control loop and the fuel control system.

L30TXAH1 FIRST FAILED HIGH EXHAUST

THERMOCOUPLE See alarm : L30TXA_ALM See alarm : L30TXA_ALM

L30UPSCS_ALM BATTERY CHARGER - CS FAULT Inverter static converter group fault Check inverter static converter group

L30UPSMAJ_AL INVERTER MAJOR UPS FAULT MCC UPS major fault Check MCC UPS

L30UPSMIN_AL INVERTER MINOR GROUP FAULT Inverter minor group fault Check inverter minor group

L30UPSMOD_AL INVERTER MODULE GROUP FAULT Inverter module group fault Check inverter module group fault

L30VG_ALM LOAD COMPT COOLING FAN

CHANGE OVER The load compartment ventilation is faulty.

Check the ventilation system of this compartment (power supply, motor, fans, electrical circuit...).

Check the pressure switch. Check the position of vent flap.

L30VGX_ALM LOAD COMPARTMENT VENTILATION

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L30VL_ALM GAS CABINET _ EMERGENCY FAN ‘’ON’’

Fan fault: changeover to emergency fan. Motor fault.

Pressure switch fault.

Check the gas skid ventilation system (motors, fans, power supply, etc.)

Check the power supply of the motor 88 VL and its protections.

Check the pressure switch 63 VL.

L30VLX_ALM GAS COMPARTMENT VENTILATION

FAULT The gas compartment ventilation is faulty.

Check gas compartment ventilation. Check motors, 88 VL _ 1,2.

Check mechanical status of fans. Check pressure switches 63 VL _ 1,2.

L30WCX_ALM COOLING WATER PUMP FAULT

(CHANGEOVER)

Motor fault Power supply fault Pump fault

Check the mechanical status of the motor and the pump Check what the circuit is correctly positioned

Check the supply of the motor drawer and the motor Check the fuses, breaker and the connection of the motor

L30WCX1_ALM COOLING WATER MOTOR # 1 FAULT See alarm : L30WCX_ALM See alarm : L30WCX_ALM

L30WCX2_ALM COOLING WATER MOTOR # 2 FAULT See alarm : L30WCX_ALM See alarm : L30WCX_ALM

L30WN_ALM WATER INJECTION NOT SELECTED Water injection not selected.

Water injection has been deselected. Research the cause of the injection deselecting.

L30WN1_ALM WATER INJECTION PUMP

ELECTRICAL FAULT

Power supply fault Pump fault

Check the mechanical status of the pump Check the supply of the pump

Check the fuses, breaker and the connection of the pump

L30WQER_ALM WATER INJ SERVO NOT FOLLOWING

OUTPUT Difference between the flow measured and the flow wanted

Check the injection circuit to see why the measured flow is lower than the constant flow

L30WR1X_ALM HEAT VENT WI COMPARTMENT

HEATER IN TROUBLE Heat vent WI compartment heater in trouble Check heat vent WI compartment heater

L30WSA1_ALM WHEELSPACE TEMP. DIFFERENTIAL

HIGH

Excessive differential between wheel-space thermocouples. Defect thermocouples (TTWS_XX).

Thermocouples position fault. Combustion fault.

Check thermocouples for shorts, grounds or opens. Replace failures. If condition persists investigate for seal failure.

Check the thermocouples position.

Check the combustion and regulation system.

L30WSA2_ALM WHEELSPACE TEMPERATURE HIGH

High wheel-space temperature (for proper value refer to control specification).

Ventilation system fault.

Thermocouples fault (TTWS_XX).

Check thermocouples, investigate for seal failure. Check the ventilation system.

Check the proper operation of the thermocouples.

L32DW_ALM GENERATOR BREAKER

TRIP_REVERSE POWER

Turbine fault.

Fuel feeding system fault.

Turbine checking.

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L33ARS_ALM AC TRANSFER CB SPRING CHARGE

FAILURE AC transfer cb spring charge failure Check circuit breakers 52AR & 52AS

L33BT_ALM TURBINE COMPARTMENT VENT.

FLAP CLOSED

Flap closed in the turbine compartment. Limit switch fault.

Check the position of flap.

Determine the cause of the flap closing. Check the limit switch 33 BT.

L33CDMN_ALM AT MIN TNR-REVERSE POWER NOT

DETECTED

Transducer fault

System of detection fault

Check the proper operation of the generator watts transducer and open the manually breaker if necessary Check the logic of command

L33CL1_ALM CO2 LOCK OFF IN ZONE 1 CO2 emission

Refer to fire protection panel to determinate the fire zone. The unit should not be operated until the cause has been determined and corrected and the fire protection has been re-established in its normal condition (refilling of CO2

bottles, circuit reset...).

Check for the causes of this trip; hot air or fuel or oil leaks, or short-circuits.

NOTE:

Restarting after an operation of the CO2 system requires

that the CO2 system be reset, including all doors and

dampers, and the CO2 release mechanism.

WARNING:

Carbon Dioxide, in a concentration sufficient to extinguish fire, creates an atmosphere that will not support life. It is extremely hazardous to enter the compartment after the CO2 system has been discharged. For further information,

refer to Fire Protection System documentation if available. The extent and type of safeguards and personnel warning that may be necessary must be designed to meet the particular requirements of each situation. It is

recommended that personnel be adequately trained as to the proper action to take in case of such an emergency.

L33CL2_ALM CO2 LOCK OFF IN ZONE 2 CO2 emission See alarm : L33CL1_ALM

L33CL4_ALM FIRE PROTECTION DLN COMPT CO2

LOCKED ALARM CO2 emission See alarm : L33CL1_ALM

L33DT1_ALM HEAT VENT AUXILIARY

COMPARTMENT DOOR OPEN

The door of the compartment auxiliary is open. Limit switch fault.

Check the air inlet filter system. Check the limit switch 33 DT1.

(18)

L33DT2_ALM HEAT VENT AUXILIARY COMPARTMENT DOOR OPEN

L33DT3_ALM HEAT VENT AUXILIARY

COMPARTMENT DOOR OPEN

L33JS_ALM WATER INJECT COMP FLAP DAMPER

NOT CLOSED Water inject comp flap damper not closed. Check damper

L33PGC_ALM PRIMARY PURGE VALVES FAILURE

TO CLOSE

Either one or both of purge valves VA13_1and VA13_2 not functioning correctly.

Either one or both of limit switches 33PG_1 and 33PG3 not functioning correctly.

Check the proper operation of:

_ Purge valves VA13_1 and VA13_2 _ Air valves VA36_1 and VA36_2 _ Solenoid valves 20PG_1 and 20PG_2. Check Speedtronic connections and interface. Check the limit switches 33PG_1 and 33PG_3 for set point and Speedtronic connections.

L33PGO_ALM GAS FUEL NOZ. PURGE VALVE FAIL

TO OPEN The purge valves VA 13_1 and VA 13_2 failed to open.

Check the proper operation of the purge valves VA 13_1 and VA 13_2.

Check the status of the solenoid valves 20 PG_1 and 20 PG_2.

Check the proper operation of the limit switches 33 PG_2 and 33 PG_4.

L33PLP_ALM PRIMARY LIQUID FUEL LOW PURGE

FAULT

No detection of opening on liquid fuel purge system when

purge is requested Control liquid fuel purge valve position (hi flow valve)

L33PS1C_ALM VENT VALVE FSV452 NOT CLOSED

This alarm indicates the wrong position of the vent valve: The valve is blocked

Valve fault Limit switch fault

Check that noting is blocking the valve Check the limit switch

Check the valve

L33PS2O_ALM VENT VALVE LIMIT SWITCH NOT

OPEN

This alarm indicates the wrong position of the vent valve: The valve is blocked

Check the valve

L33PSC_ALM GENERATOR HOT GAS

TEMPERATURE HIGH Generator hot gas temperature high Refer to specific chapter

L33PSO_ALM GAS FUEL VENT VALVE OPEN

TROUBLE Gas Fuel Vent Valve Open position trouble Check limit switch and valve

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L33VG_ALM LOAD COOLING AIR FLAT DAMPER

NOT CLOSED

Damper not closed Limit switch fault

Check the position of the damper Determine the cause of the flap opening Check the limit switch 33VG

L33VG11_ALM TURBINE GAS VENT VALVE

POSITION FAULT

Turbine gas vent valve position fault. Limit switch fault.

Check the proper operation of vent valve 20 VG-1. Check the limit switch 33VG

L33VL_ALM HEAT VENT GAS/DLN COMPT VENT

FLAP NOT CLOSED

Compartment flap damper not closed Limit switch fault

Check the position of the damper Determine the cause of the flap opening Check the limit switch

L33VS411C_AL GAS FUEL SHUT OFF VALVE LIMIT

SWITCH NOT CLOSED

Valve position fault Limit switch fault

Check valve 20VS position Check limit switch 33VS4

L33VS411CX_A GAS FUEL SHUT OFF VALVE

CLOSED TROUBLE

L33VS421O_AL GAS FUEL SHUT OFF VALVE LIMIT

SWITCH NOT OPEN

L33VS421OX_A GAS FUEL SHUT OFF VALVE OPEN

TROUBLE

L33WNC_ALM H2O INJ CTRL & XFER VLV FAIL TO

CLOSE Something is blocking the valve Check what is blocking the valve and remove it

L33WNO_ALM WATER INJECTION TROUBLE There is a problem in the injection circuit Check the injection circuit

L39VA_ALM HIGH VIBRATION ALARM Vibration at one or more bearings. Monitor vibration readings.

Determine the cause of this trouble and repair.

L39VCA_ALM VIBRATION BN GT. AXIAL SHAFT

DISPLACEMENT ALERT

GT axial shat displacement alert

1st step Check vibration sensors and wiring.

L39VCD_ALM VIBRATION BN GT. AXIAL SHAFT

DISPLACEMENT DANGER

GT axial shat displacement alert

2nd step Check vibration sensors and wiring.

L39VD1_ALM VIBRATION SENSOR DISABLED Signal from vibration sensors is faulty. Check vibration sensors and wiring.

L39VD3_ALM VIBRATION _ START INHIBIT

Start inhibited.

Vibration protection system problem. Too many sensors in trouble or disabled.

Check vibration protection system. Check the vibration sensors.

L39VDIFF_ALM VIBRATION DIFFERENTIAL TROUBLE Vibration protection system problem.

Check vibration protection system.

Check the level of each sensor and determine the cause of the differential.

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L39VF_ALM VIBRATION TRANSDUCER FAULT Vibration detector impedance is not within normal bounds or 3 or more gas turbine sensors are disabled or faulty.

Check impedance or each vibration detector (open or short-circuit).

Check the vibration protection system.

NOTE:

With the 3 or more sensors disabled or faulty, the start is inhibited.

L39VS10A_ALM VIB BN GEN BRG #2 RADIAL SHAFT

DISPLACEMENT ALERT

Generator bearing 2 radial shat displacement alert

L39VS10D_ALM VIB BN GEN BRG #2 RADIAL SHAFT

DISPLACEMENT DANGER

Generator bearing 2 radial shat displacement alert

L39VS1A_ALM VIB BN GT BRG #1 RADIAL SHAFT

DISPLACEMENT ALERT

GT bearing 1 radial shat displacement alert

L39VS1D_ALM VIB BN GT BRG #1 RADIAL SHAFT

DISPLACEMENT DANGER

DISPLACEMENT ALERT

DISPLACEMENT DANGER

GT bearing 2 radial shat displacement danger

DISPLACEMENT ALERT

DISPLACEMENT DANGER

L39VS9A_ALM VIB BN GEN BRG #1 RADIAL SHAFT

DISPLACEMENT ALERT

L39VS9D_ALM VIB BN GEN BRG #1 RADIAL SHAFT

DISPLACEMENT DANGER

L39VSD_ALM HIGH VIBRATION SHUTDOWN High vibration

Check for mechanical failures, observe vibration level Determine the cause of this trouble and repair Check the vibration sensor

L39VT_ALM HIGH VIBRATION TRIP High vibration

Check for mechanical failures, observe vibration level Determine the cause of this trouble and repair Check the vibration sensor

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L3A_ALM TURBINE UNDERSPEED The turbine speed is too low (< 95%) when complete

sequence is reached (L3) (end of starting sequence).

Reduce the load that will be applied to the generator before closing again the generator breaker (network problems).

Check the proper operation of the speed relay 14 HS circuit logic.

l3ACS_ALM SERVOS CHECK FAULT TRIP The turbine gas is not on Total liquid or total gas Check fuel system

L3APFLT_ALM AMBIENT PRESSURE

MEASUREMENT FAULT AFPAT sensor fault Change AFPAT sensor

L3CP_ALM DAMPER CUSTOMER START INHIBIT Customer damper not in correct status to start GT. Check damper position

L3CPRI_ALM INLET PRESSURE MEASUREMENT

FAULT AFPCS sensor fault Change sensor

L3DWBCOKZ_AL BOTH HYDRAULIC PUMPS LOCKED

OUT Both hydraulic pumps locked out Refer to specific chapter

L3DWRF LOSS OF EXTERNAL SETPOINT

LOAD SIGNAL Bad signal from load control transducer.

Check the transducer 96 GG (setting point, power supply, link).

L3FS1C_T_ALM SHUT OFF VALVE SWITCH FAIL TO

CLOSED

This alarm indicates the wrong position of the shut off valve: The valve is blocked

Check the valve

L3FTGL_ALM GAS FUEL TEMPERATURE LOW -

RECYCLING

Trip unit.

Gas fuel temperature very is low.

Check the proper operation of the temperature switch FTG.

Check the gas skid (motor, fan, circuit, etc…)

L3FTGLT_ALM GAS FUEL TEMPERATURE GAS TOO

LOW Gas temperature low.

Check the gas heating system.

Check the proper operation of the temperature switch 26 GL.

L3FTGLZ_ALM GAS FUEL TEMPERATURE LOW

AFTER RECIRCULATION Gas fuel temperature low after re-circulation Check cooling and sealing system

L3FUZ_ALM HEAVY FUEL TRANSFER

PERMISSIVE TROUBLE

The transfer to heavy fuel is not authorized, because the temperature or pressure of the heavy fuel is not correct.

Check the forwarding heavy fuel system and the heater system (if used).

Check the inhibitor system.

Check the temperature switch 26 FU_2, 26 FL_2 and pressure switch 63 FU_2 and 63 AD_1.

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L3GCVA_ALM GAS CONTROL VLV NOT FOLLOWING - ALARM

Start inhibited + transfer to fuel if running on gas or transfer to gas inhibited.

The gas control valve feedback is abnormal. Supply fault.

Sensors defected.

Valve and servo-valve fault.

Check LVDT, 96 GC_1, 2 (setting value, wiring). Check the calibration of the VGC.

Check the proper operation of the servo-valve 65 GC_1.

L3GCVFLT_ALM GAS CONTROL VALVE SERVO

TROUBLE

The gas control valve feedback is abnormal. Supply fault.

Sensors defected.

Check LVDT, 96 GC_1, 2 (setting value, wiring). Check the calibration of the VGC.

Check the proper operation of the servo-valve 65 GC_1.

L3GLTSDTC_AL SHUT DOWN GAS LEAK TEST

COMPLETE Shut down gas leak test complete. No action

L3GLTSUTC_AL START UP GAS LEAK TEST

COMPLETE Start up gas leak test complete No action

L3GRVA_ALM STOP/SPEED RATIO VLV NOT

TRACKING ALARM

Valve position fault LVDT fault

Check valve position Check LVDT

L3GRVFLT GAS RATIO VALVE POSITION SERVO

TROUBLE

The gas ratio valve feedback signal is abnormal. Supply fault.

Sensors defected.

Check LVDT, 96 SR (setting value, wiring). Check the calibration of the VSR.

Check the proper operation of the servo-valve 90 SR.

L3GRVT_ALM STOP/SPEED RATIO VLV NOT

TRACKING TRIP

Valve position fault LVDT fault

Check valve position Check LVDT

L3IGVFLT_ALM INLET GUIDE VANE POSITION

SERVO_TROUBLE

Loss of feedback.

At start-up, the inlet guide vanes are not closed. At normal speed, the inlet guide vanes are closed.

Determine the cause and correct before restarting. The master reset must be initiated before starting. Check the proper operation of the solenoid valve 20 TV_1 and the control system of the jack.

Check the setting values of the LVDT 96 TV_1 and 2. Refer to the control specification.

(23)

L3LFLT_ALM LIQUID FUEL CONTROL FAULT

Liquid fuel check system has detected an abnormal servo or LVDT position or signal.

HP oil fault.

Mechanical problem on the bypass.

Check the fuel pressure before the nozzles. Check for the fuel leakage.

Check the HP oil pressure and check for leakage. Check if the bypass is not clamped.

Check the different devices (setting point, calibration). Check the regulation system.

L3LTOT_ALM LUBE OIL TANK TEMERATURE FAULT

Start inhibited.

Lube oil heaters fault (23 QT_1 to 6). Lube oil pump in trouble (88QA_2). Loss of AC.

Check the lube oil heaters (23 QT to 6). Check the lube oil circuit.

Check the AC supply (415 VAC).

L3MP_ALM MASTER PROTECTIVE START

CHECK ETR FAULT Turbine not ready to start Check start check screen on the HMI

L3PTCC_ALM EXHAUST TC VTCC

COMMUNICATIONS FAULT See : L3PTCC_1J1A_FLT See : L3PTCC_1J1A_FLT

L3SFLT_ALM CONTROL SYSTEM FAULT TRIP Control system fault Check control system

L3SMT_ALM STARTING DEVICE TRIP. Failure of cranking motor to start.

Check the cranking motor cell, the breaker and the electrical motor.

Identify the faulty circuit and repair.

CAUTION:

Take the safety recommendation for working on medium voltage.

L3TFLT_ALM LOSS OF COMPRESSOR DISCHARGE

PRESSURE BIAS Bad signal from compressor pressure transmitter (96 CD).

Check the transmitters and associated connections. Check the associated connections for proper bias signal. Check the pressure.

L3TMFLT1_ALM TORQUE CONVERTER GV TROUBLE The torque converter guide vane position transducer is

damaged or disconnected.

Check the transducer. Verify the adjustment.

Do not restart the unit before it is done.

L3TNRERRX DWATT TOO LOW TO SUPPORT

TNR_TNR LOWER Dwatt too low to support tnr_tnr lower

Check fuel supply Check FSR limitation

L3VLST_ALM HEAT VENT GAS PRESS ULTRA LOW

DOWNSTREAM SSOV Gas feeding pressure low Check the feeding of gas fuel

L3WCTIM_ALM ON_LINE WATER WASH INHIBITED The ‘’On-line’’ water wash is inhibited because the

compressor inlet temperature is low.

To continue the water wash sequence, select in the SPEEDTRONIC MARK V the ‘’Inlet air heating’’ circuit.

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L3WWTDZ_ALM FALSE START DRAIN TC DIFF HIGH

Spread between the Two TC’s,

TC disconnected or broken.

Check TC and connection.

Repair wiring or replace TC if found damaged.

L3Z_ALM FAILURE TO SYNCHRONIZE Unit did not synchronize and close generator breaker within

the normal expected time.

Investigate synchronization system to determine exact cause of problem.

Check the stability of the turbine speed control.

L43ADJ_ALM VSVO IN CALIBRATION MODE VSVO in calibration mode Finish calibration

Set off calibration mode

L43CR_ALM STARTING MEANS CRANKING

MOTOR REMOTE POSITION Starting motor remote selected No action

L43EX_ALM EX2K MANUAL (FVR) REGULATOR

ACTIVE EX2K manual (FVR) regulator active No action

L43FL_T_ALM TRANSFER TO LIQUID FUEL FAIL -

TRIP

Transfer to liquid fail

Transfer during more than 2 minutes Check liquid fuel system

L43MAINT_ALM MAINTENANCE _ FORCING MODE

ENABLED

Auto calibrate, memory changing or logic forcing mode of

operation has been selected. When done with the operation, deselect the operation.

L45FP1_ALM FIRE PRE-ALARM IN ZONE 1 Fire detection in compartment # 1 See alarm : L33CL1_ALM

L45FP2_ALM FIRE PRE-ALARM IN ZONE 2 Fire detection in compartment # 2 See alarm : L33CL1_ALM

L45FP4_ALM FIRE PREALARM ZONE #4 ALARM Fire detection in compartment # 4 See alarm : L33CL1_ALM

L45FPX_ALM FIRE PROTECTION - GENERAL FIRE

ALARM ZONE 1 & 2 Fire detection in compartment # 1 See alarm : L33CL1_ALM

L45FTX1_ALM FIRE IN ZONE #1 Fire in zone #1 See alarm : L33CL1_ALM

L45FTX2_ALM FIRE IN ZONE #2 Fire in zone #2 See alarm : L33CL1_ALM

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L45HA4_ALM

HZD GAS DETEC

DLN/AUX COMPT CARD FAULT OF SET 4

A leak of gas is detected in the DLN compartment.

Gas leak detection alarm may be generated either by gas detection loop fault or by a real gas leak.

Refer to Gas detection control system cabinet and relevant component literature for detailed fault analysis. Gas leak detection alarm must be considered as high priority. Continued operation of the turbine is not

recommended. Proceed to normal shutdown to avoid later trip by higher detection level.

For dual fuel machine, do not transfer to liquid fuel. This will not eliminate the leak if situated downstream the gas control

valves. The leak shall remain at the same place with other fluid (e.g. purging air).

Do not open the door of the enclosure, keep the area around free of people.

Access to enclosure is only permitted when the main gas valve is closed and the line depressurised, the unit is stopped, on cooling sequence by ratchet system (Frame 6000B) or by barring system (Other Frame) with issuing of the relevant access permit or permit to work.

Visual check the flanges (Refer to Residual risks summary/Maintenance phase) and the flexible metal hoses (Refer to GEK 111694) and all other connections. Pressurise the length/section of pipe according to End User procedure and appropriate precautions. It may be worth to use portable gas detectors and/or leak detection liquids or spray to find what caused the alarm.

Repair the leak and reset the alarm after investigation. L45HA4H_ALM

HZD GAS DETEC DLN COMP-DLN

VENT/GAS CAB HIGH LEVEL

A leak of gas is detected in the DLN compartment. See alarm : L45HA4_ALM

L45HA4HH_ALM

HZD GAS DETEC DLN /AUX COMPT#4

VENT/GAS CAB HIGH HIGH LEVEL

A leak of gas is detected in the DLN/auxiliaries

compartment. #4 See alarm : L45HA4_ALM

L45HA4T_ALM HZD GAS DETEC HIGH HIGH LEVEL

INFORMATION A leak of gas is detected in the ventilation compartment

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L45HA5_ALM

HZD GAS DETEC

L45HA5HH_ALM

A leak of gas is detected in the DLN/auxiliaries compartment. #5

See alarm : L45HA4_ALM

L45HA6_ALM

HZD GAS DETEC

L45HA6HH_ALM

A leak of gas is detected in the DLN/auxiliaries

compartment. #6 See alarm : L45HA4_ALM

L45HGD_PRETA START INHIBITED DUE TO GAS

DETECTION FIRST LEVEL Start inhibited

Check where the gas is detected

An alarm indicate witch compartment is concern

L45HGDHH_ALM HZD GAS DETEC HIGH HIGH LEVEL

INFORMATION A leak of gas is detected in the ventilation compartment

See alarm : L45HA4_ALM

L45HGDSD_ALM HAZARDOUS GAS DETECTION

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L45HT1_ALM TURB COMPARTMENT GAS LEVEL

HIGH-ALM Gas level high detected in the turbine compartment.

Gas leak detection alarm may be generated either by gas detection loop fault or by a real gas leak.

Refer to Gas detection control system cabinet and relevant component literature for detailed fault analysis. Gas leak detection alarm must be considered as high priority. Continued operation of the turbine is not

recommended. Proceed to normal shutdown to avoid later trip by higher detection level.

For dual fuel machine, do not transfer to liquid fuel. This will not eliminate the leak. The leak shall remain at the same place with other fluid (e.g. purging air).

Do not open the door of the enclosure, keep the area around free of people.

Access to enclosure is only permitted when the unit is stopped, on cooling sequence by ratchet system (Frame 6000B) or by barring system (Other Frame) with issuing of the relevant access permit or permit to work.

Visual check the flanges (Refer to Residual risks summary/Maintenance phase) and the flexible metal hoses (Refer to GEK 111694).

Pressurise the length/section of pipe according to End User procedure and appropriate precautions. It may be worth using portable gas detectors and/or leak detection liquids or spray to find what caused the alarm.

Repair the leak and reset the alarm after investigation.

L45HT1H_ALM TURBINE & EXTRACT DUCT COMB

GAS LEVEL HIGH' Turbine compartment level very high. Check the gas sensors 45 HT-1HH, 2HH and 3-HH

L45HT1HH_ALM

HZD GAS DETEC TURBINE COMPT#1 HIGH HIGH LEVEL

A leak of gas is detected in the turbine compartment. #6 See alarm : L45HT1_ALM

L45HT1T_ALM TURB COMPARTMENT LEVEL VERY

HIGH-TRIP Turbine compartment level very high.

Check for leakage in the gas turbine compartment. Check the gas sensors 45 HT-1HH, 2HH and 3-HH.

L45HT2_ALM GT VENTILATION DUCT GAS LEVEL

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L45HT2HH_ALM

L45HT3_ALM

HZD GAS DETEC

TURBINE COMPT CARD FAULT OF SET 3

A leak of gas is detected in the turbine compartment. See alarm : L45HT1_ALM

L45HT3HH_ALM

L45HT4_ALM

HZD GAS DETEC

L45HT4H_ALM

HZD GAS DETEC

TURBINE COMPT VENT DUCT HIGH LEVEL

A leak of gas is detected in the ventilation compartment. See alarm : L45HT1_ALM

L45HT4HH_ALM

L45HT4T_ALM

HZD GAS DETEC TURBINE COMPT-VENTILATION DUCT

TRIP

A leak of gas is detected in the ventilation compartment See alarm : L45HT1_ALM

L45HT5_ALM

HZD GAS DETEC

L45HT5HH_ALM

L45HT6_ALM

HZD GAS DETEC

L45HT6HH_ALM

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L48_ALM TURBINE INCOMPLETE SEQUENCE Failure of unit to reach complete sequence.

Check equipment, which is the cause of the problem in the normal sequence: starting system power, torque

converter, fuel control, and acceleration loop. Check if the AUTO order has been executed.

L48CR_ALM TURBINE SHAFT FAILURE TO BREAK

AWAY

The time delay is finished and the turbine shaft does not breakaway.

Starting means fault.

Check the operation of the auxiliaries. Check the starting means.

Check the supplies.

L49X_ALM AUXILIARY MOTOR OVERLOAD One of the auxiliary motors is overloaded.

Check auxiliary motors to determine which motor is overloaded and the cause of the overloading. On the defective motor, check the overload relay, the fuses (or the CB), and the motor with the cables. Check the set point of the overload relay.

Check the fuses FU.1, 2 on the motor overload circuit.

L4CT_ALM CUSTOMER TRIP Customer trips input to the L4CT logic have caused an

automatic trip of the unit.

Determine which of the customer trip devices caused the trip and correct.

L4EXOFF_ALM EX2K OPERATOR SELECTED

EXCITATION OFF Operator selected excitation off. For information

L4FCBRUN_ALM REGULATION FAN BLOCK STARTS Regulation fan block starts For information

L4IGVT_ALM INLET GUIDE VANE CONTROL

TROUBLE TRIP

The I.G.V. position is not correct. Adjustment of the hydraulic jack. Problem of the setting values.

Check the I.G.V. control system.

Check the proper operation and the setting values of the LVDT 96 TV_1 and 2.

Check the adjustment of the hydraulic jack. Refer to the control specifications.

L4LTTH_T_ALM LUBE OIL HEADER TEMPERATURE

SNSR FLT: TRIP

The 3 thermocouple are faulty Temperature of lube oil is too high. Shutdown TG

Check the lube oil skid (exhauster, heater, pump). Check proper operation of thermocouple

LTTH1/LTTH2/LTTH3.

L4QESTP1_ALM DC PUMP FIRST STEP TIMER

FAILURE Breakers failure, wire lost, timer failure Check power supply, wiring, breakers, timer in M.C.C

L4QESTP2_ALM DC PUMP SCND STEP TIMER

FAILURE Breakers failure, wire lost, timer failure Check power supply, wiring, breakers, timer in M.C.C

L4QETRPZ_ALM AC PUMP FAILURE TRIP 88QA fault Check 88QA

L4QETST_ALM DC PUMP TEST FAILED 88QE fault Check 88QE

(30)

L4TK_WW_ALM EXHAUST FRAME BLOWER FAULT. WATER WASH INHIBITED

Exhaust frame blower fault. Impossible to wash TG.

Check the operation of the motors 88 TK_1 and _2. Inspect cooling airflow passages.

Check the suction silencers.

Check the pressure switches 63 TK _1,2.

L51QE_ALM EMERGENCY LUBE OIL OVERLOAD The emergency lube oil pump is faulty.

Check the time over current relay 51 QE. Check the mechanical status of the pump. Check supply of the motor pump.

L51QEFLT_ALM DC PUMP ABNORMAL POWER See alarm : L51QE_ALM See alarm : L51QE_ALM

L51QEOFF_ALM EMERGENCY LUBE OIL PUMP OUT

OF SERVICE See alarm : L51QE_ALM See alarm : L51QE_ALM

L52AB_ALM ATOMIZING AIR BOOSTER MCC

CONTACT POSITION ALARM Atomizing air booster Command trouble Check Atomizing air booster power supply in MCC

L52BT_ALM TURBINE COMPARTMENT VENT.

FAULT

Something is blocking the fan Motor overload

Short circuit Motor fault

Check that nothing is blocking the fan Check the fan can run in good conditions Check electrical circuit

Check motor

L52FC1_ALM COOLING WATER FANS PERMANENT

BLOCK FDBCK FAULT

Breaker opened by operator or tripped by high motor temperature.

Determine the breaker, which is open, and find the reason of its position (overload, fuses fault, defected motor, mechanical problem of the motor or the fan, supply, etc.). Correct cause of problem and close breaker.

L52FC2_ALM COOLING WATER FANS REGULATOR

BLOCK FDBCK FAULT See alarm : L52FC1_ALM See alarm : L52FC1_ALM

L52FDY_ALM FUEL FORWARDING MOTOR

BREAKER OPEN The remote breaker is detected open Determine the cause of this trouble and repair.

L52FM_ALM FLOW DIVIDER STARTUP MOTOR

BREAKER FAULT Flow divider startup motor breaker fault Check flow divider startup motor breaker

L52G1_ALM GENERATOR BREAKER TRIPPED Generator breaker has been tripped by an automatic

protective device or manually.

Determine device that tripped the breaker.

The problem should be corrected before coupling again.

NOTE:

For a new coupling, one must give a new start order for proper operation of synchronizing sequence.

L52HA11_ALM GAS COMPARTMENT HEATER

BREAKER FAULT Discrepancy between start order and feedback Check feedback match with heater status

L52HA30_ALM AUXILIARY COMPARTMENT HEATER

(31)

L52HQ1_ALM HYDRAULIC SUPPLY AUXILIARY

PUMP DISCREPANCY

Motor, pump fault Motor supply fault. Oil leakage on HP circuit.

Check for leakage.

Check the mechanical status of the motor and the pump. Check the motor supply (fuses, breaker, connection) Check the proper operation of :

_ the pressure switch 63 HQ_1. _ the pressure transmitter 96 HQ_1. _ the overload relays 49 HQ_1 and 2.

Check the status of the filter (an alarm must appear).

L52HT30_ALM TURBINE COMPARTMENT HEATER

BREAKER FAULT Discrepancy between start order and feedback Checks feedback match with heater status

L52JS_ALM HEAT VENT WI COMPARTMENT

VENT. FAULT

Something is blocking the fan Motor overload

Short circuit Motor fault

Check fuses, breakers, protections, and supply. Check the mechanical status of the fan and the motor in trouble.

Check the proper operation of the water injection fan motor 88JS.

After doing corrective action, close the breaker in trouble.

L52MCBALM_ALM DEFAULTS FUSIBLES

UNDERVOLTAGE RELAY Customer signal Specific customer

L52QA_ALM AUXILIARY LUBE OIL PUMP MOTOR

RUNNING

The main lube oil pump is supplying insufficient lube oil pressure due to pump failure or leaks.

Examine main lube pump.

Check pump output and main lube filters for leaks or plugging.

Check proper operation of pressure switch 63 QA.

L52QB_ALM GENERATOR LIFT STANDBY BEAR

LIFT OIL PMP RUNN Lube oil pump ready or running For information

L52TG_ALM TURNING GEAR MOTOR TROUBLE The turning gear motor is not running during the turning

gear sequence.

Check the turning gear motor drawer 88 TG (fuses, breaker, relay, power supply).

Check the AC supply power.

L52TK1_ALM EXHAUST FRAME BLOWER #1

DISCREPENCY

Blower is running while there is no run signal Blower is not running while there is run signal

Check 88TK1

Check electrical circuit

L52TK2_ALM EXHAUST FRAME BLOWER #2

DISCREPENCY

Blower is running while there is no run signal Blower is not running while there is run signal

Check 88TK2

Check electrical circuit

L52VG_ALM LOAD COMP. COOLING FAN MOTOR

TROUBLE The load compartment cooling fan motor is not running.

Check the power supply of the motor drawer in the T.C.C. Check the relay.