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14K160TH OTR Body & Air Compressor Manual # 99903184
Shutdown
1
Close service valve.
2
Depress PTO On/Off switch to
off
position.
Compressor Controls
CONTROL OR INDICATOR
PURPOSE
TEMPERATURE SWITCH GAUGE
Monitors the temperature of the air/fluid mixture leaving the
compressor. The normal reading should be approximately
175 to 210° F. Sends signal to relay when the compressor
reaches 240° and the compressor will shut off.
HOURMETER
Indicates accumulated hours of actual compressor operation.
FLUID LEVEL SIGHTGLASS
Indicates fluid level in the sump. Should be half full when at
proper level. Check this level when the compressor is
disengaged and the vehicle is parked on level ground.
PRESSURE RELIEF VALVE
Vents sump pressure to the atmosphere if the pressure inside
the sump exceeds 200 PSI.
COMPRESSOR INLET CONTROL
VALVE
Regulates the amount of air intake in accordance with the
amount of compressed air being used. Isolates fluid in
compressor on shutdown.
PRESSURE REGULATING VALVE
Senses air pressure from sump to provide automatic
regulation of the compressor inlet control valve and load
controller.
BLOW DOWN VALVE
Coalescer head blow down valve vents the sump pressure to
the atmosphere at shut down.
MINIMUM PRESSURE VALVE
Restricts air flow to balance sump and service air pressure.
Assures a minimum of 65 PSI to maintain compressor
lubrication.
RETURN LINE CHECK VALVE
Ensures that the back flow to the coalescer element does not
occur during shutdown.
