Troubleshooting - Lowara EFLCG 40-9 Operating Manual

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7.

TROUBLESHOOTING

PROBLEM
THE PUMP HAS
STOPPED
THE PUMP DOES
NOT START / IR-
REGULAR OPER-
ATION
THE PUMP
WORKS BUT THE
FLUID DOES NOT
MOVE
THE PUMP IS
NOISY
16
POSSIBLE CAUSES
a) See paragraph 5.3
"Signals"
a) Impurities in
pump
a) Air in the system
b) Valve closed
a) Pump speed too high a) Decrease the set point
b) Static head too low
c) Air in the system
REMEDIES
a) Reset the fault indicator
b) Check the mains power supply and the fuses
the a) See paragraph 6 "Maintenance"
a) Vent the pump and the system
b) Open the valve
b) Increase the inlet pressure
c) Vent the pump and the system