Haskel Q-Drive QGD Series, Installation, Operation And Maintenance Manual

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Q-Drive Installation, Operation, and Maintenance Manual
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Troubleshooting
For actions, see “Inspection and Preventive Maintenance” and “About Service and Repair.”
Problem Possible Cause Action
Oil leak at shaft. A seal on the rod is worn. Replace the rod seal.
Oil leak at inlets.
A seal is extruding into the inlet
port.
Replace the seal on the port.
The direction of oil flow is
incorrrect.
Motor phase is incorrect.
Shut down the system.
In order to reverse the direction of
the motor, 2 of the phases’
positions in the facility 3phase
supply cable need to be
exchanged.
External leakage is extreme.
Inspect the tubing, the end cap on
each gas section, and the seals
on the check valves.
A seal failed on the gas section.
Inspect gas vent for leakage
above 700 SCCM. If so, change
piston seal.
Booster does not build
pressure.
Faulty check valve.
Inspect the check valve for
contaminants.
Improper check valve.
Verify that the IN label on the
body of check valve is matched
with the IN label on the end cap
of the gas section. Verify that
OUT labels match.
Seal has contamination.
Check valve is leaking.
Seal is extruded.
Repair check valve with the check
valve seal kit.
Broken or worn spring in poppet
valve
.
Gas leak at vents.
The seal on the gas piston is
damaged. Replace the seal on the gas
piston.
Gas leaks externally
The seal on the gas barrel is
damaged.
Service the gas section.
High outlet gas temperature.
Inlet pressure is decaying.
Adjust the inlet pressure to within
recommended compression ratio.
Pump speed is too high.
Decrease the CPM rate to slow
the pump.
Coolant flow is off or not
adequate. Inspect and service the cooling
system.
Coolant leaks.
The seal on the cooling jacket of
the gas barrel is damaged or
worn. Perform service on cooling
system.