Troubleshooting - Delta Dual 800 Groundwater Series Installation Manual

10. Troubleshooting

Please ensure the installation process has been completed thoroughly and all steps have been followed correctly.
Use the table below to assist with troubleshooting and if problems still occur, please contact Delta Membranes on
01992 523 523 between 8am and 5pm, Monday to Friday or by email at info@deltamembranes.com for more information.
Fault
Water is leaking from discharge arms.
Pump isn't running.
The pump is running but is not
pumping water or is discharging very
slowly (taking more than 40 seconds
to empty the chamber).
Pump is tripping.
High level alarm is not functioning.
19 Delta Dual 800 Groundwater Packaged Pumping Station
Cause
'O' rings missing or not installed correctly in unions.
PTFE tape not applied to male irons on discharge arms when attached to pumps.
Pump hasn't got power – check wiring with reference to section 6.0 wiring diagram.
Float arm isn't lifting – check float arm is free moving and not catching on chamber or other pump
– make sure pumps are positioned as diagram 38.
Float arm not turning on pump – can you hear a click when lifted slowly? If not, call Delta
Technical.
Gate valve isn't open or partially closed – turn valve anticlockwise to open.
Pump is air locked – make sure there is a level of water to the top of the pumps, remove pump
from union and lower back into water, lift float arm to activate pump before reconnecting to
discharge arm.
Discharge pipe is blocked – a drainage company is required.
Pump impeller is jammed – turn off power and isolate pump, remove pump from chamber,
unscrew pump base using Torx screwdriver and free impeller.
WARNING!
Insure mains power and pump is isolated before taking pump apart
and seek advice from a qualified electrician.
Pump is wired incorrectly or not on a separate supply – refer to section 6.0 wiring diagram.
Pump impeller is jammed – turn off power and isolate pump, remove pump from chamber,
unscrew pump base using Torx screwdriver and free impeller.
WARNING!
Insure mains power and pump is isolated before taking pump apart
and seek advice from a qualified electrician.
Refer to the high level alarm installation and operating instructions.
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