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Water Monitoring System
12 Troubleshooting
Note
For troubleshooting the system, please refer to the PI diagram of each system.
Troubleshooting should always be carried out by skilled personnel.
The water monitoring system is connected to hazardous electric voltages, which can
cause personal injury or mechanical damage if not handled correctly and in
accordance with normal safety regulations.
12.1 General
Trouble
Flow alarm, but
operating pressure is
high, while backpressure
(measured with pump
OFF) is low
Low flow
Pump failure
Blocked valve
No display at all
Ver.5.0 – Revision March 2022
Possible Cause →Action
→ Blocked flow path → Clean strainer, open blocked valves, check
hoses are intact.
→ Check and adjust the flow regulating valve.
→ Air in system → evacuate air by disconnecting the relevant hoses.
→ Check system for blockages – especially disassembly and clean
the non-return valve.
→ Pump not running → check automatic fuse, remove end cover to
observe impeller rotating.
Attention: Moving parts. Check impeller and end cover condition. If
the impeller is swollen another impeller material must be fitted.
Replace impeller, end cover or pump if necessary.
→ Check the pressure holding, pressure reduction or relief valves.
Clean if necessary.
→ Check the flow sensor. Clean it if necessary.
→ Check the circuit breaker.
→ Check power supply – the power supply needs to be at correct
voltage.
→ Check communication cable.
Page 63 of 110
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