WARNING
Chemical hazard
Death or serious personal injury
‐
Make sure that the product has only been used for
water. If the product has been used for pumping
aggressive liquids, flush the system with clean water
before you start work on the product.
WARNING
Pressurised system
Death or serious personal injury
‐
Before dismantling the product, drain the system or
close the isolating valves on both sides of the product.
Slowly loosen the drain plug and unpressurise the
system.
8.1 The pump does not start
Cause
Supply failure.
Remedy
Cut in the circuit breaker or replace the fuses. If the
new fuses also blow, check the electrical
installation.
Cause
The pump is blocked by impurities.
Remedy
1.
Clean the pump.
2.
Clean or replace the strainer in the inlet pipe.
Cause
The motor is defective.
Remedy
Replace the pump.
8.2 The pump stops unexpectedly during operation and
starts again after a while
The thermal switch in the motor has tripped due to overheating and
runs intermittent operation. The thermal switch will cut in
automatically when the motor has cooled sufficiently. If the problem
persists, check the possible causes:
Cause
The impeller is stuck.
Remedy
Clean the pump.
Cause
The motor is defective.
Remedy
Replace the pump.
Cause
The ambient temperature is too high.
Remedy
Make sure the ambient temperature is below the
maximum ambient temperature stated on the
nameplate.
8.3 The pump runs, but does not deliver the expected
amount of water
Cause
The outlet pipe is blocked.
In this case, the pump typically delivers a reduced
quantity of water at a high pressure.
Remedy
Clean the pipe or open the isolating valves, if any.
Cause
The pump is not filled with water.
Remedy
Prime the pump.
Cause
The inlet pipe is blocked by impurities.
Remedy
Clean the inlet pipe. Clean or replace the strainer in
the inlet pipe.
Cause
The pump is blocked by impurities.
Remedy
Clean the pump. Clean or replace the strainer in the
inlet pipe.
Cause
The suction lift is too high.
Remedy
Change the position of the pump. The suction lift
must not exceed 8 m.
Cause
The inlet pipe is too long.
Remedy
Change the position of the pump.
Cause
The diameter of the inlet pipe is too small.
Remedy
Replace the inlet pipe.
Cause
The inlet pipe is not immersed deeply enough.
Remedy
Make sure that the inlet pipe is immersed
sufficiently.
Cause
The inlet pipe is leaking.
Remedy
Repair or replace the pipe.
8.4 Fault finding boosters with a pressure manager
8.4.1 Operating panel for pressure manager PM 1
Reset
Power on
Pump on
Alarm
PM 1
2
3
1
4
TM039360
Fig.
Operating panel on pressure manager PM 1
Pos. Symbol
Description
1
Power on
The green indicator light is permanently on
when the power is on.
2
Pump on
The green indicator light is permanently on
when the pump is running.
3
Alarm
The red indicator light is permanently on or
flashes when the pump has stopped due to
an operating fault.
4
Reset
The reset button is used for the following:
•
resetting fault indications
•
enabling and disabling the anti-cycling
function.
For indicator light check, all indicator lights illuminate when the
power is switched on.
8.4.2 The "Alarm" indicator light flashes once at a regular
interval
For systems without a pressure tank.
The anti-cycling function has stopped the pump because the pump
starts and stops too frequently.
15
English (GB)
