TROUBLE SHOOTING
The table below provides a summary of the most common problems and malfunctions that could arise.
For any other specific problems not covered by this list, please contact us by phone, email or just drop in.
Problem | Cause | Solution |
Pump is running but does not reach the pre-set pressure | Pump is sucking in air | Check inlet ducts and make sure they are air-tight |
Valves are worn | Check and replace | |
Regulating valve seats worn | Check and replace | |
Nozzle inadequate or worn | Check and replace | |
Seals worn | Check and replace | |
Pump not sucking | Pump is sucking in air | Check inlet ducts and make sure they are air-tight |
Suction level too low | Check inlet water level | |
Inlet valves dirty | Disassemble and clean the inlet valves or connect the pump inlet to the water mains and pump for a few minutes | |
Irregular pressure oscillation | Inlet and/or outlet valves worn | Check and replace |
Foreign matter present in the valves jeopardizing their functioning | Check and clean valves | |
Pump is sucking in air | Check inlet ducts and make sure they are air-tight | |
Water seals worn | Check and/or replace seals | |
Drop in pressure | Nozzle worn | Change nozzle |
Inlet and/or outlet valves worn | Check and/or replace valvesCheck and clean valves | |
Foreign matter present in the valves jeopardizing their functioning | Check and/or replace the regulating valve seat | |
Regulating valve seat worn | Replace | |
Water seals worn | Replace seals | |
In case of belt drive, belts are slack or worn | Replace belts or adjust tension | |
Excessive noise | Pump not being fed correctly | Check that the suction level is not too low or that the suction pipes are not blocked (e.g., filter clogged) |
Pump is sucking in air | Check inlet ducts and make sure they are air-tight | |
Inlet and/or outlet valve springs damaged or broken | Replace valve springs | |
Foreign matter in inlet/outlet valves | Check and clean the inlet/outlet valves | |
Bearings worn | Bearings worn Replace bearings | |
Fluid temperature too high | Reduce the temperature of the pumped fluid | |
Water traces in oil | Excessive leaks caused by totally worn water seals | Replace seals |
High humidity rate in air | Change oil twice as often as recommended | |
Water seeping from drains between head and crankcase | Water seals worn | Replace seals |
Piston damaged | Replace piston | |
O-ring on piston bolt worn | Replace O-ring | |
Oil seeping from drains between head and crankcase | Oil seals worn | Replace oil seals |
Frequent or premature wear of water seals | Pistons damaged or scratched | Replace pistons |
Abrasive matter in water | Install the proper filter on the inlet side | |
Water temperature too high | Check temperature of inlet water | |
Pump running dry | Avoid running pump without water | |
Operates for long periods in by-pass | Limit by-pass mode running to no more than 5 min | |
Excessive vibrations at outlet hose/pipe | Pulsation dampener drained (where present) | Check pressure in pulsation dampener |
Valves worn or dirty | Check and replace | |
Pump is sucking in air | Check inlet ducts and make sure they are air-tight | |
Water seals worn | Replace water seals |
