White S4A Installation And Operating Manual page 12

PUMP SERVICE CHART con't.
THE TROUBLE IS?
Fuses blow but overload doesn't trip
Electric shock from water pipe
Note: A motor down to earth or defective cable
will not cause a shock.
Pressure gauge oscillates, flow surges (snoring)
Electrolysis on motor and pump
NOTE: Always install borehole submersibles with ON/OFF switches and approved circuit breaker to protect
against motor damage and electrocution.
DAB Submersible Pump Installation Instructions 2013 rev 1
WHAT TO LOOK FOR
Supply cable too small
Hydraulic overload
Fuses too small
Fuse receptacle dirty or corroded
Power spike
Loose connection in fuse box
Defective incoming power leads
Excessive motor starts per hour
Earth wire connected to wrong control box
terminal
Cable insulation failure
Voltage too high or low
Defective (grounded) incoming power leads
Defective control box
Earth wire connected to wrong control box
terminal
Water level too low in the well. (Flow through
pump greater than flow into well)
Insufficient earth / earth leakage
Broken earth wire
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