Walrus Pump TQ Series, Инструкция по эксплуатации, Страница: 12 / 16

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XV. Troubleshooting
Before starting work on the pump, make sure that the electricity supply has been
switched off and that it cannot be accidentally switched on.
Problem
1. pump does not
start
2. Pump cuts out
during operation
3. Pump starts
when no water is
consumed
4. Pump starts and
stops too
frequently
5. Electric shock
6. Pump does not
stop when water
is not consumed
7. Pump runs
normal but with
very low
discharge flow
Cause
a. No power supply
b. Too low/high voltage
c. No water consumption
d. Seized-up pump
a. Seized-up pump
b. Overloaded motor
c. Poor water supply
d. The protection for pump dry
run or cycling is activated.
a. Existing pipe is leaking
b. Defective check valve
c. Pipe suck in air.
a. Leakage in suction pipe
or air in the water.
b.Discharge flow is too low.
a.Defective ground
connection
a. Poor water supply or air
suck in.
b. Defective check valve.
a. 3-phase motor runs in
wrong rotating direction
b. Poor water supply
Remedy
Connect the electricity supply
Check if supply voltage is within ± 10%
Open a tap
Place a screwdriver against the shaft end of
the motor to check if the rotor will spin freely,
and contact your pump supplier.
Same as above
Turn off the power supply and restart or
contact your pump supplier.
Check if pump suction inlet is blocked.
Check the detailed information per XII
(Frequently asked questions).
Fix the leakage.
Clean or replace a new one.
Check the suction pipe and water supply.
Check the suction pipe and water supply.
Set your tap on a higher water flow.
Correct the ground connection.
1. Turn off the power supply and open the
refilling plug to release the air. Then restart.
2. In case of long suction pipes, turn off the
power and make sure if water supply is
adequate.
Clean or replace with a new valve.
Switch any of the 2 wires from motor
terminal to correct rotation.
Check if water supply is adequate and if the
suction pipe is blocked.