DIVEX MHE-02, Installation, Operating And Maintenance Manual

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KI-OM-523 R2 Chapter 5
CHAPTER 5 TROUBLESHOOTING
The tables in this section are designed as a troubleshooting guide to aid in the identification
of faults and outline possible corrective action.
5.1 PUMP SPECIFIC FAULT DIAGNOSIS AND MAINTENANCE
PROBLEM POSSIBLE CAUSE SOLUTION
Pulsation Faulty Pulsation Damper. Check pre-charge of pulsation
Damper; if low, recharge or
install a replacement
component.
Low Pressure Belt slippage. Tighten or replace; use correct
belt.
Air leak in inlet plumbing. Disassemble, reseal, and re-
assemble.
Pressure gauge inoperative or
not registering accurately. Check with new gauge;
replace faulty gauge.
Relief valve stuck, partially
plugged or improperly
adjusted, valve seat worn. Clean and adjust relief valve;
check for worn and dirty valve
seats. Replace worn parts.
Inlet filter clogged or
improperly size. Clean. Use 50 micron filter
element. Check more
frequently.
Worn packing. Abrasives in
pumped fluid or severe
cavitation. Inadequate water
supply. Install proper filter. Check fluid
supply available to the pump.
Low Pressure Fouled or dirty inlet or
discharge valves Clean inlet and discharge
valve assemblies.
Worn inlet or discharge valves. Replace worn valves, valve
seats and/or discharge hose.
Leaking discharge hose.
Pump runs
extremely rough,
pressure very low Restricted inlet or air entering
the inlet plumbing. Size inlet plumbing correctly;
check for air tight seals.
Inlet restrictions or stuck inlet
or discharge valve. Clean out foreign material.
Leaking HP seals. Replace worn seals.
Water leakage from
under the inlet
manifold Worn packing. Install new packing.
Worn male and female
adaptor. Install new male and female
adaptor.