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11 Service and Maintenance
The pump is nearly free of maintenance. If the pump was not working for a
longer time or the system is heavily contaminated could the rotor be blocked. It
will shown by flashing of three LED lights.
By removing of he motor head ( loosening the union nut and remove the motor
head ) the impeller is accessible and can be also removed. By doing this the
blockade can be solved and / or the pump can be cleaned.
Tighten the union nut with 30 Nm torque.
Switch off the power to the system before performing maintenance, cleaning or
repair work, and secure it against unauthorised reactivation.
Allow the pump to cool down in the event of high temperatures and system
pressures. There is a
risk of scalds!
12 Faults, Causes and Remedies
For the elimination of faults on an under pressure standing system the
pumps has to be set pressureless!
1. The pump does not supply
POSSIBLE CAUSES
ELIMINATION
The pump is not connected on the
power supply.
Check the power supply and fuses
or carry out a voltage reset.
(disconnect it from the power
supply, wait a minute and switch it
on again)
The pump is blocked .
Maintenance
The motor is defect.
The pump has to be replaced.
2. The pump does not start or is operating irregular.
POSSIBLE CAUSES
ELIMINATION
Deposits inside of the pump.
Maintenance
3. The pump is operating but does not supply water.
POSSIBLE CAUSES
ELIMINATION
It is air in the system.
Vent the system and the pump.
The ball valve is closed.
Open the ball valve.
