COPYRIGHT RESERVED

1. General Description

1.1 The V Line is a 2 stage, 2 cylinder reciprocating type air compressor direct coupled to an electric motor, all mounted on Anti-Vibration mounts.

The equipment is designed to be operated via a remote mounted starter/control panel (supplied by either Hatlapa or the Customer).

The compressor rotating and reciprocating elements are splash lubricated via

‘dippers’, integrally cast onto the con-rods, hitting the oil surface - the oil contained in the compressor crankcase.

The compressor is arranged with a water cooling system, which is be suitable for fresh water only. This system cools both the air interstage and after coolers. An integrally mounted electric motor driven water circulating pump can be supplied by Hatlapa.

1.2 Pressure gauges are provided for monitoring the air interstage and final stage pressures, P1 and P2.

1.3 The compressor has a number of safety features as follows:-

Safety valves are fitted to each air stage of the compressor, SV1 and SV2 A safety valve is fitted to the water jacket housing the coolers, SV5 1.4 The compressor is fitted with the following protection devices:-

Minimum oil level, F13 shutdown (1) and optional alarm (2) High final delivery temperature, F3 shutdown (S) and optional alarm (W) High compressor motor current shutdown only

High water pump motor current shutdown only (of water pump supplied) Note –

1) Both the low oil level switch, F13, and the high air temperature switch, F3, are closed under normal running conditions and open on fault.

2) The low oil level switch, F13, is connected to a timer delay to prevent spurious operation due to ship’s motion, ie, pitch and roll.

1.5.1 The starter/ control panel should be capable of the following functions:- Selection of manual mode local start/stop only

Selection of automatic mode local or remote start/stop sequence

Original

T0401132 Sheet 2 of 4

_{CONTROL AND OPERATING} PHILOSOPHY

V LINE COMPRESSOR FRESH WATER COOLED ELECTRO-MECHANICAL VERSION

ECN No. Drawn WAH

Issue No. 1 2 Checked

Date: 08.05.02 16.01.06 Approved SK W:\Compressors\ENGINEERING\T Stds\T0401132-ISS2.doc

COPYRIGHT RESERVED

Selection sequence of operation - if more than one compressor is charging the system a selector switch should be fitted enabling the sequence in which the compressors should work i.e. lead and follow.

Emergency stop operation - shutdown only - local or remote

2. Operation

Note - If this is the first commissioning or a re-commission after a significant period out of service then refer to the commissioning procedure for guidance.

2.1 Normal Running Procedure (Automatic Control)

Note – The manual drain valves (HV1) should be closed

2.1.1 Energise the starter panel via the main isolator Set mode switch S1 to AUTO

Set local/remote switch S2 as required

Set drain switch S3 to AUTO (S3 not fitted if only hand drains supplied) Press RESET push button.

2.1.2 On pressing the START button, the following events occur:- The compressor starts and runs off load

The water circulating pump (WP) starts and runs (when fitted) The water shut off valve (Y5) is energised to open (when fitted)

The compressor will run off load for 15 – 20 seconds after which solenoid valves Y1 and Y2 are energised to close to charge the air system.

(Note - the solenoid valves will only close if the air system is not fully charged) Note – If a visual flow indicator (F1) is fitted to the compressor cooling water outlet this should be checked to ensure that water is circulating through the compressor. In the event that there is no flow the compressor should be stopped and the cause investigated.

2.1.3 The compressor is now controlled by the air system pressure switch.

At 5 minute intervals (adjustable dependant on ambient conditions) solenoid valves Y1 and Y2 are de-energised to open for 2 seconds (adjustable) to drain moisture collected in the interstage and final stage separator bowls.

2.1.4 On air system charged signal, from the air system pressure switch, solenoid valves Y1 and Y2 are de-energised to open to drain and unload the compressor and await a signal as follows:-

Original

T0401132 Sheet 3 of 4

_{CONTROL AND OPERATING} PHILOSOPHY

V LINE COMPRESSOR FRESH WATER COOLED ELECTRO-MECHANICAL VERSION

ECN No. Drawn WAH

Issue No. 1 2 Checked

Date: 08.05.02 16.01.06 Approved SK W:\Compressors\ENGINEERING\T Stds\T0401132-ISS2.doc

COPYRIGHT RESERVED

On recharge signal the solenoid valves Y1 and Y2 close, energise, causing the compressor to charge the system.

If the recharge signal is not received within 5 minutes (adjustable) of the charged signal, the compressor stops leaving the solenoid valves Y1 and Y2 open. On recharge signal the compressor starts as for pressing the START button.

2.1.5 On pressing the STOP button solenoid valves Y1 and Y2 are de-energised to open to drain the separator bowls, the compressor continues to run on for 5 minutes

(adjustable) before stopping.

Simultaneously with the compressor stopping the water circulating pump (if fitted) stops and the water shut off valve Y5 (if fitted) is de-energised to close.

Pressing the START button during this cycle brings the compressor back on line to charge the air system.

2.1.6 If the START button is pressed while the air system is fully charged, the compressor starts as described in Paragraph 2.1.2. The compressor is then controlled by the air system pressure switch as described in Paragraphs 2.1.3 and 2.1.4.

2.2 Sequence Selector Switch

2.2.1 If more than one compressor is charging the receiver, the Sequence Selector Switch changes which compressor is the lead and which is the follow machine.

2.3 Manual Mode Running

2.3.1 Energise the starter panel via the main isolator Set the mode switch S1 to MAN

Set local/remote switch S2 to LOCAL

Set drain switch S3 to AUTO (S3 not fitted if only hand drain valves fitted) Press RESET push button.

The compressor will start and run in this mode overriding the low oil level switch, F13, and high air temperature switch, F3. The emergency stop button and motor thermal overloads will still stop and unload the compressor.

Starting, running and stopping cycles are as for Normal (Automatic) Running as described with the exception of the following:-

Oil level switch overridden

High air temperature switch overridden Remote start/stop function disabled

2.4 Emergency Stop

Original

T0401132 Sheet 4 of 4

_{CONTROL AND OPERATING} PHILOSOPHY

V LINE COMPRESSOR FRESH WATER COOLED ELECTRO-MECHANICAL VERSION

ECN No. Drawn WAH

Issue No. 1 2 Checked

Date: 08.05.02 16.01.06 Approved SK W:\Compressors\ENGINEERING\T Stds\T0401132-ISS2.doc

COPYRIGHT RESERVED

Upon pressing the emergency stop button, either local or remote (if fitted), the compressor stops immediately, solenoid valves Y1 and Y2 open, water circulating pump (if fitted) stops and the water shut off valve, Y5, (if fitted) closes.

3 General

3.1 It is recommended that individual volt-free change-over contacts and control panel indicator lamps are provided as follows:-

Compressor running

Water pump running (if fitted) Low oil level shutdown

Low oil level warning (if fitted) High air temperature shutdown

High air temperature warning (if fitted) Compressor motor overload

Water pump motor overload (if fitted)

Original

T0401133

Page 1 of 3

V-LINE COMPRESSOR

INSTALLATION RECOMMENDATIONS