Section 6
MAINTENANCE
21
at this point.
3. Open the service valve so the line pressure is
7.9 bar. Machine is now set for operation.
Recheck the unload pressure by closing of the
service valve. Machine should unload via the
pressure switch at 8.6 bar.
After the control pressures have been adjusted, the
"unloaded" sump pressure should be checked. It
should be between 2.1 and 2.8 bar.
Cycle the Control System several times and re-
check all pressure settings.
Before doing compressor maintenance, discon-
nect compressor from power source and lock out
power source. Isolate compressor from line pres-
sure by closing recommended discharge shut-off
valve and releasing all internal pressure from
compressor.
INLET CONTROL VALVE
Refer to Figure 6-7. The only parts which normally
require replacement are the piston seal on the
intake valve piston and gasket. Follow this proce-
dure for inlet control maintenance.
1. Remove the inlet filter assembly.
2. Disconnect tubing from intake control housing at
Figure 6-6 Pressure Switch (P/N 02250141-938)
Figure 6-7 Inlet Control Valve
*Repair Kit P/N 02250045-287
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