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Installation Manual Cab-mount aerial installation
Compressor setting
For in-depth information, please refer to the manufacturer's document.
Before using the air compressor on the field, the primary pressure switch sensing the receiver
should be set according to the motor maximum compression capacity in order not to damage
the motor.
For a 50 PSI maximum compression capacity given as an example, the motor should start
when the receiver pressure falls around 25 PSI and stop at 50. To set the pressure switch
correctly, use the following procedure:
ยท Remove the pressure switch cover to access the two adjusting screws.
WARNING
The four terminal screws are at line voltage and present a shock hazard.
Turn the center adjusting screw counter-clockwise to decrease cut-in pressure (ON) and cut-
out pressure (OFF).
To change the cut-out pressure without affecting the cut-in setting, turn the off-center screw
clockwise to increase the setting or counterclockwise to decrease the setting.
To check the settings, release air from the system until the compressor starts and note the
pressure gauge reading when it comes on, then dose the air valve and note the pressure at
which the compressor shuts off.
0311400 March 2001