C1000 Series Service & Maintenance Manual
Service and Repair
SECTION IV
PNEUMATIC
WARNING
: HIGH SYSTEM PRESSURES MAY CAUSE SERIOUS INJURY.
ALWAYS DEPRESSURIZE THE ENTIRE SYSTEM BEFORE ATTEMPTING TO SERVICE PNEUMATIC COMPONENTS.
1.
Replacing the check valves.
If a check valve failure occurs, the symptom will be air escaping through one of the compressor
heads with the compressor NOT running. To replace a defective check valve, unscrew “counterclockwise” the air discharge hose
fi
tting
from the appropriate compressor head. Once the air discharge hose is disconnected from the compressor head, the check valve,
along with the discharge hose, may be removed from the discharge manifold by unscrewing the check valve ”counterclockwise”, and
replaced with a new check valve. Reverse this process to reassemble the check valve / discharge hose assembly.
2.
Replacing the Differential Filter Indicator.
If the differential indicator becomes stuck in either the red OR green
indicating position, the indicator needs replacement. Replace the differential
fi
lter indicator by unscrewing the entire assembly
“counterclockwise” with a 15/16” - 6 point / box end wrench. Install the new indicator in the reverse order.
3.
Automatic Filter Float Drain.
Unscrew the coalescing
fi
lter bowl from the
fi
lter head. Using a 9/16 wrench, unscrew the
retaining nut on the bottom of the
fi
lter bowl. With the retaining nut removed, the automatic
fl
oat drain will be removed from the
fi
lter bowl. Replace in the reverse order.
4.
Replacing Desiccant Chamber.
To replace the desiccant chamber, remove the rigid stainless steel tubing from the dryer
bypass valve at the compression
fi
tting, located at the dryer bypass valve. Remove the top plumbing manifold assembly from the top
of the desiccant chamber, by turning counterclockwise. Remove the electrical cord from the dryer purge valve by removing the Philips
head retaining screw, and pulling the cable away from the valve timer block. Next, remove the
fl
exible discharge hose from the
discharge side of the coalescing
fi
lter, and then unscrew the bottom manifold assembly from the bottom of the desiccant chamber.
Replace the desiccant chamber and reassemble in the reverse order.
1.800.624.2793
15
Unpacking
Electrical
