2-6. OPERATING PROCEDURE

WARNING

Always use ear protection. During operation, the generator set exceeds permissible decibel levels. The steam cleaner also exceeds permissible decibel levels during operation in the steam mode and during blowdown. Failure to observe this warning could result in permanent hearing injury.

Wear safety goggles/glasses and gloves (item 12, appx E) when operating the steam cleaner in any mode to prevent injury from scalding and high water velocity.

CAUTION

Do not use the steam cleaner in any mode on surfaces having a petroleum-based undercoating. Otherwise erosion/removal of such undercoating can result.

NOTE

Read through operating procedures before operating the steam cleaner.

In most instances, equipment should be washed by starting at ground level and working up, and rinsed by starting at the top and working down.

a. General Theory of Operation. The steam cleaner can deliver steam or hot or cold water, all at high pressure, as selected by the MODE SELECTOR on the upper control panel assembly.

When MODE SELECTOR is turned to OFF position from the hot or cold water position, steam cleaner will automatically go into a drain cycle. When MODE SELECTOR is turned to OFF position from steam operation, steam cleaner will automatically start the blowdown cycle.

b. Cold Rinse.

(1) Perform initial startup procedure (para 2-5c.).

(2) Install appropriate nozzle on steam cleaning gun (1) (para 2-1).

(3) If using generator power, refer to TM 5-6115-615-12 and start generator set.

(4) Rotate MODE SELECTOR (2) to COLD.

(5) Press PUSH TO START switch (3). Steam cleaner should start immediately.

WARNING

To avoid possible injury to personnel, if outlet pressure exceeds 600 psi (4137 kPa), turn EMERGENCY OFF switch to OFF position and notify unit maintenance.

(6) OUTLET PRESSURE gauge (4) reading should build up to a minimum of 400 psi (2758 kPa). Maximum pressure in this mode is 600 psi (4137 kPa). Steam cleaner is now ready to use in the cold rinse mode.

(7) To turn off cold rinse mode, rotate MODE SELECTOR (2) to OFF.

(8) If using generator power, refer to TM 5-6115-615-12 and stop generator set.

(9) If finished with steam cleaner, refer to paragraph e. for shutdown procedure.

c. Hot Wash/Rinse.

(1) Perform initial startup procedure (para 2-5c.).

(2) Install appropriate nozzle on steam cleaning gun (1) (para 2-1).

(3) If using generator power, refer to TM 5-6115-615-12 and start generator set.

(4) Rotate MODE SELECTOR (2) to COLD.

(5) Press PUSH TO START switch (3). Steam cleaner should start.

(6) After lines have filled with water, rotate MODE SELECTOR (2) to HOT.

c. Hot Wash/ Rinse. (cont)

WARNING

To avoid possible injury to personnel, if outlet pressure exceeds 600 psi (4137 kPa), turn EMERGENCY OFF switch to OFF position and notify unit maintenance.

(7) OUTLET PRESSURE gauge (4) reading should build up to a minimum of 400 psi (2758 kPa). Maximum pressure in this mode is 600 psi (4137 kPa).

(8) FUEL PRESSURE gauge (5) should read between 90 and 110 psi (620.6 and 758.5 kPa) when oil burner cycles on.

(9) OPERATING TEMPERATURE gauge (6) should build to between 180 and 200°F (82.2 and 93.3 °C). Steam cleaner is now ready to use in the hot wash/rinse mode. If HOT WATER ALARM light comes on, turn MODE SELECTOR to COLD. If light goes off, resume operation. If light stays on, turn MODE SELECTOR to OFF and contact unit maintenance.

(10) If using cleaning solution, open CHEMICAL METERING valve (7) to desired setting and allow sufficient time for cleaning solution to reach steam cleaning gun.

(11) To shut off cleaning solution, close CHEMICAL METERING valve (7) and allow sufficient time for cleaning solution to clear steam cleaning gun.

(12) To turn off hot wash/rinse mode, rotate MODE SELECTOR (2) to COLD. Allow steam cleaning gun to cool, then rotate MODE SELECTOR (2) to OFF.

(13) If using generator power, refer to TM 5-6115-615-12 and stop generator set.

(14) If finished with steam cleaner, refer to paragraph e. for shutdown procedure.

d. Steam.

(1) (2) (3) (4) (5) (6)

Perform initial startup procedure (para 2-5c.).

Install appropriate nozzle on steam cleaning gun (1) (para 2-1).

If using generator power, refer to TM 5-6115-615-12 and start generator set.

Rotate MODE SELECTOR (2) to COLD.

Press PUSH TO START switch (3). Steam cleaner should start immediately.

After lines have filled with water, rotate MODE SELECTOR (2) to STEAM.

WARNING

To avoid possible injury to personnel, if outlet pressure exceeds 400 psi (2758 kPa), turn EMERGENCY OFF switch to OFF position and notify unit maintenance.

(7) OUTLET PRESSURE gauge (4) reading should build up to a minimum of 200 psi (1379 kPa). Maximum pressure in this mode is 400 psi (2758 kPa).

(8) OPERATING TEMPERATURE gauge (5) should build to between 315 and 335°F (157.2 and 168.3 °C) in 4 to 5 minutes. Steam cleaner is now ready to use in the steam mode. If STEAM ALARM light comes on, turn MODE SELECTOR to COLD. If light goes off, resume operation. If light stays on, turn MODE SELECTOR to OFF and contact unit maintenance.

(9) FUEL PRESSURE gauge (6) should read between 90 and 110 psi (620.6 and 758.5 kPa) when oil burner cycles on.

d. Steam. (cont)

(10) If using cleaning solution, open CHEMICAL METERING valve (7) to desired setting and allow sufficient time for cleaning solution to reach steam cleaning gun.

(11) To shut off cleaning solution, close CHEMICAL METERING valve (7) and allow sufficient time for cleaning solution to clear steam cleaning gun.

The blowdown cycle lasts about 4 minutes and emits excessive steam and noise.

The operator must remain approximately 10 feet (3.05 m) from steam cleaner during blowdown to prevent possible burns from steam and hot water.

Hearing protection is required as the steam cleaner projects high intensity noise; failure to do so could result in permanent hearing loss.

Ensure steam cleaning gun is turned off before entering blowdown cycle. Extreme heat will damage wash hose and steam cleaning gun.

(12) To turn off steam mode, rotate MODE SELECTOR (2) to OFF. This will start the automatic blowdown cycle, flushing coil residue out through the blowdown pipe (8).

(13) Allow steam cleaner to blowdown automatically and shut off.

(14) If using generator power, refer to TM 5-6116-615-12 and stop generator set.

(15) If finished with steam cleaner, refer to paragraph e. for shutdown procedure.

e. Shutdown Procedure.

NOTE

Cleaning solution will be siphoned out when steam cleaner is shut down unless CHEMICAL METERING valve is closed.

(1) (2) (3) position.

(4) (5) water.

(6) (7)

Ensure that MODE SELECTOR (1) is turned to OFF.

Turn EMERGENCY OFF circuit breaker (2) to off position.

Turn both the fuel tank shutoff valve (3) and the oil burner fuel shutoff valve (4) to the off

If using pressurized water, turn off water supply spigot.

If drawing water from nonpressurized source, pull the suction hose assembly (5) out of the

If operating outdoors, close the exhaust flap (6) and all access doors (7).

Wipe off steam cleaning gun (8) and wash hose assembly (9) with a clean wiping rag (item 18, appx E).

and instruction plates that are used on the steam cleaner, along with their respective locations.

S e c t i o n I V . O P E R A T I O N U N D E R U N U S U A L C O N D I T I O N S