19
Operation
The compressor has an operating time limit of approximately three hours depending upon
ambient air temperature (outside air temperature), weather conditions and whether an oil cooler
has been installed. Oil coolers will extend the three hour limit.
CAUTION
THE HYDRAULIC OIL TEMPERATURE MUST NOT BE ALLOWED TO EXCEED 190°F
(88°C). IF THE OIL TEMPERATURE REACHES THIS LIMIT, THE SYSTEM MUST BE
SHUT DOWN AND ALLOWED TO COOL. OIL COOLERS WILL EXTEND THE THREE-
HOUR LIMIT.
To start the compressor:
1
Ensure the PTO is disengaged, control valve is open (pull the compressor switch out) and
the receiver drain cock is open.
2
Start the truck engine and allow it to idle until it reaches the proper operating temperature
(refer to the vehicle owner’s manual).
3
Depress the clutch, engage the PTO and carefully release the clutch pedal. Allow the
system to warm up for the time period as shown in chart.
COMPRESSOR WARM-UP TIME
AMBIENT AIR TEMPERATURE
(°°F)
IDLING TIME (WARM-UP)
+40° OR ABOVE
NONE
+20° TO +40°
2 - 5 MINUTES
0° TO +20°
5 - 10 MINUTES
-20° TO 0°
10 - 15 MINUTES
-40° TO -20°
15 - 20 MINUTES
BELOW -40°
20 MINUTES MINIMUM
4
When starting the compressor, the RPMs will automatically increase due to low volume of air
in the system.
CAUTION
S
E C T I O N
4
Operation
