Sullair 375 - Initial Startup;Shutdown Procedure; Startup; Shutdown; Restart Procedure

30
375 Caterpillar Standard and Aftercooled/Filtered Operator’s Manual and Parts List
SECTION 4
Blowdown Valve
Vents sump pressure to the atmosphere at shutdown.
Idle Warm-Up Control
Keeps the compressor inlet valve closed for reduced
compressor load at start-up. When the compressor is
warmed-up, the handle is turned from the START to the
RUN position for full operation.
Pressure Selector Switch (H and HH Models)
Sets compressor operation in the LOW range from 80 to
110 psig (5.6 to 7.6 bar), or in the HIGH range from 80 to
165 psig (5.6 to 11.4 bar) on H models, and from 80 to 220
psig (5.6 to 15.2 bar) on HH models.
4.3 INITIAL STARTUP/SHUTDOWN
PROCEDURE
Startup
Perform the following actions when starting the
compressor for the rst time:
Ensure that the compressor is on a level surface. (If 1.
the compressor is on an uneven surface, the uid
sight gauge readings will not be accurate, and it will
not be possible to determine if uid levels are too low.) (I)
Check the oil and uid levels in the engine and 2.
compressor: add oil and/or uid if necessary.
Fill the fuel tank and drain any water from the fuel/ 3.
water separator.
Crack open one service line.4.
Place the WARM-UP control in the START position.5.
Place the PRESSURE SELECTOR switch to the LOW 6.
position (H and HH models).
Press the ENGINE SWITCH to the ON position.7.
In cold weather, press the cold weather starting aid 8.
button. Hold button for 10 to 30 seconds and then
release.
Momentarily press the ENGINE SWITCH to the 9.
START position to engage the starter: release the
switch when the engine starts.
After 30 seconds (the annunciator light will go off after 10.
30 seconds) Turn the IDLE WARM-UP SWITCH from
START to RUN to put the compressor in full operation.
Close all doors to maintain proper noise level.11.
(I) The radiator is lled with a 50/50 mixture of ethylene glycol
and water. All engines receive Supplemental Coolant Additive
(SCA) at the factory before shipment. Refer to the Engine
Operator’s Manual for specic requirements.
Shutdown
Close the service valves and run the compressor for 1.
approximately ve minutes to allow the compressor to
cool down.
Place the pressure selector switch in the low position 2.
(H and HH models).
Press the ENGINE SWITCH to the OFF position after 3.
ve minutes.
RESTART PROCEDURE4.4
After running and shutting down the compressor for the
rst time, perform the following actions when restarting the
compressor:
Check engine oil, engine coolant, and fuel levels.1.
Check the compressor uid level (sight glass) and 2.
drain any water from the fuel/water separator.
Check the dust collectors and clean if necessary.3.
Crack open the service valve.4.
Place the WARM-UP control in the START position.5.
Place the PRESSURE SELECTOR switch to the LOW 6.
position (H and HH models).
Press the ENGINE SWITCH to the ON position.7.
In cold weather, press the cold weather starting aid 8.
button. Hold button for 10 to 30 seconds and then
release.
Momentarily press the ENGINE SWITCH to the 9.
START position to engage the starter: release the
switch when the engine starts.
After 30 seconds (the annunciator light will go off after 10.
30 seconds) Turn the IDLE WARM-UP SWITCH from
START to RUN to put the compressor in full operation.
Close all doors to maintain proper noise level.11.
To shut down the compressor, see 12. Shutdown procedure
above.
WARNING
DO NOT use aerosol types of starting
aids such as ether.
Such use could result in an explosion
and personal injury.
If the engine fails to start within 30
seconds, release the starter switch or
button and wait two minutes to allow
the starting motor to cool before
attempting to start the engine again.