Section 4
OPERATION
20
4.2 PURPOSE OF CONTROLS (Continued)
CONTROL OR INDICATOR PURPOSE
BLOWDOWN VALVE Vents sump pressure to the a tmosphere at shutdown.
ALTERNATOR WARNING LAMP Indication of impending shutdown of compressor due to al -
ternator failure.
IDLE WARM---UP VALVE Maintains a closed a ir inlet valve for reduced compressor
load on start---up. When sufficient warm---up is reached,
push idle warm --- up button on control panel for full opera-
tion.The valve w ill reset automatically for start mode after
compressor is shutdown and the air pressure is released.
PRESSURE SELECTOR SWITCH (185H) Allows compressor operation in the ”low” range from 55 to
110 psig (3.8 to 7.6 bar) or in the ”high” range from 55 t o
160 psig (3.8 to 11 bar).
4.3 ST ART--UP PROCEDURE
The following procedure should be used to make the
initial start---up of your compressor:
1. Position the compressor on a level surface so that
proper amounts of liquid can be added if neces-
sary. (I)
2. Check oil and fluid levels both in the engine and
the cooling system(s). Maintain the proper level;
add if necessary.
3. Fill th e fuel tank.
4. Crack open one service line.
5. Bleed fuel injection lines if necessary (see Engine
Operator’s Manual).
6. Turn toggle switch to the “ON” position.
7. Place the pressure selector sw itch in the ”low”
position (185H).
8. Push the OVERRIDE and START button. As en-
gine engages, release START button, but hold
the OVERRIDE button for approximately 5---10
seconds or until engine oil pressure reaches 20
psig (1.4 bar) and then release.
9. Allow for sufficient warm---up of compressor, then
push idle warm---up button for full compressor
operation.
10. Close all doors in order to maintain proper noise
control.
11. After the initial run, shut the compressor down
and refill the radiator and compressor fluid sump
as required. Tighten any loose fittings and check
fan belt tension.
(I) The radiator is filled with a 50/50 mixture of ethyl-
ene glycol and wa ter a t the factory before shipment.
4.4 SUBSEQUENT START-- UP PROCEDURE
On subsequent starts, follow the procedure ex-
plained below:
1. Check engine oil, water and fuel levels.
2. Check compressor fluid level (should be half of
sight glass).
3. Check dust collectors and clean if necessary.
4. Crack open service valve.
5. Bleed fuel injection lines if necessary (see Engine
Operator’s Manual).
6. Turn toggle switch to the ON position.
7. Place the pressure selector sw itch in the ”low”
position (185H).
8. In cold weather use starting aid if necessary.
9. Push OVERRIDE button and START switch. As
engine engages, release START switch, but hold
the OVERRIDE button for approximately 5---10
seconds or until engine oil pressure reaches 20
psig (1.4 bar), and then release.
10. Allow for sufficient warm up of compressor before
operating.
1 1 . A f t e r w a r m --- u p , p u s h i d l e w a r m --- u p b u t t o n f o r
full operation.
4.5 SHUTDOWN PROCEDURE
To shut the compressor down, close the service
valves and run compressor for approximately 5 min-
utes to allow the compressor to cool down and turn
the ignition switch to the OFF position. In case of
emergency where immediate shutdown is required,
this procedure is not necessary. The ignition switch
should be put in the OFF position immediately.
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