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Troubleshooting
311594Z 11
Pump will not prime Suction line clogged. Clear. Flush more frequently.
Held open or worn ball check valves. Check and repair.
Lower piston assembled with wrong nut. Use only the large, round, special nut.
Excessive throat leakage. Worn piston rod or throat packings. Replace. See lower manual.
High current trip (t043). Pressure setting is too high. Reduce pressure.
Pump packings are too tight. Loosen and retighten.
Gear reducer oil level is low. Fill to correct oil level.
Incorrect transducer calibration. Perform calibration procedure.
Wrong fluid lowers installed. Verify size of lowers installed and config-
ured.
High pressure trip (t040). Downstream restriction is too high. Open line and remove restriction.
Circulation valve is closed. Open back pressure regulator.
Check solenoid.
Clogged fluid filters. Clean.
Incorrect transducer calibration. Perform calibration procedure.
Excessive noise. Gear reducer oil level is low. Fill to correct oil level.
Loose or worn drive linkage. Inspect; repair or replace.
Worn motor coupling. Inspect; repair or replace.
Worn gear reducer. Replace.
Pump changes direction or shakes. One leg of 3-phase is lost. Inspect and correct wiring connections on
VFD, motor, and wiring.
PROBLEM CAUSE SOLUTION