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14
Operating & Maintenance
Dry Well Submersible Pump Set
Monthly checks:
➢
Make a thorough visual check of the equipment, watching the operation through a complete
cycle.
➢
If dirt or debris appears to be clinging to the high level float switch - or to the other float
switches when fitted, clean them off by spraying with a water hose.
➢
Check that the high level float switch - and the other float switches when fitted - have not
moved from their pre-set positions and that the pumps are operating correctly.
15). General Fault-Finding Guidance:
FAULT
POSSIBLE CAUSE
RECOMMENDED ACTION
Pumps will not run:
1). Power failure.
Check main isolator.
Check that a power supply is
available prior to the control
panel
– (e.g Distribution board)..
Pump(s) start frequently:
1). Start switching point set to
low.
Reset the switching point higher
Pump(s) run longer than
normal operation:
1). NRV not sealing properly.
2). Discharge pipe blockage.
Check.
Check and remove any
blockages.
Pumping set
‘flooded’:
Isolate electrical supply.
Use a separate portable pump to
pump out chamber as low as
possible.
Check for cause of flooding and
repair.
