Section 4
OPERATION
30
4.3 INITIAL START-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
necessary. (I)
2. If needed, add a water and ethylene glycol solu-
tion to the engine radiator. Engine cooling sys-
tem capacity is 30 gallons (113 liters).
3. Fill compressor fluid sump with fluid as recom-
mended in Section 3, Specifications. System
capacity is 58 gallons (220 liters).
4. Check engine oil level and add if necessary.
5. Check the fuel supply.
6. Fill the battery with electrolyte, if necessary.
7. Close and latch all doors except instrument
panel door.
8. Close all service valves and turn arrow on start-
run valve handle down to “start” position.
9. Below 40°F (4°C) use starting aid (per instruc-
tions printed on starting aid device).
10. Turn engine switch to the “ignition” position.
11. Turn engine switch to “start” position and hold
until engine starts (maximum 15 seconds).
12. When engine coolant temperature reaches
110°F (43°C), turn arrow on start-run valve han-
dle to “RUN” position. Compressor is now ready
for full load operation.
13. 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.
4.4 SUBSEQUENT START-UP PROCEDURE
On subsequent starts, follow the procedure
explained below:
1. Position compressor on level ground so fluid
level can be read accurately. Check fluid level
and add as needed.
2. Close and latch all doors except instrument
panel door.
3. Close all service valves and turn arrow on start-
run valve handle down to “start” position.
4.2 PURPOSE OF CONTROLS (CONTINUED)
CONTROL OR INDICATOR PURPOSE
MINIMUM PRESSURE / CHECK VALVE
Maintains a minimum of 200 psig (13.8 bar) in the compres-
sor sump. This valve restricts receiver air discharge from
receiver/sump when pressure falls to 200 psig (13.8 bar). Also
prevents back flow into the sump during unload conditions
and after shutdown.
HI/LO SELECTOR VALVE
Select high pressure (350 psig) or low pressure (200 psig) at
instrument panel to correspond to operator’s needs.
PRESSURE RELIEF VALVE
Opens sump pressure to the atmosphere should pressure
inside the sump exceed 400 psig (27.6 bar).
AIR INLET VALVE
Regulates the amount of air allowed to enter the air inlet
valve. This regulation is determined by the amount of air
being used at the service line.
BLOWDOWN VALVE
Vents sump pressure to the atmosphere at shutdown.
THERMAL VALVE
Regulates flow of fluid to and around the fluid cooler.
Designed to maintain a minimum operating temperature; used
for fast warm-up at start-up and to eliminate condensation
during operation.
START/RUN CONTROL VALVE
Allows the engine to run at unload speed (lower pressure)
until properly warmed up.
BLOWDOWN VALVE
Vents surplus sump pressure to the atmosphere during
operation.
(I) The radiator is filled with a 50/50 mixture of ethylene glycol and water at the factory before shipment.
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