Customer Service Information; Service Kits; Starting Up The Product After Standstill; Deblocking The Pump - Grundfos SCALA Instructions Manual

To remove the outlet non-return valve, follow the steps
below:
1. Turn off the power supply and disconnect the power plug.
2. Shut off the water source.
3. Open a tap to release the pressure in the pipe system.
4. Close the isolating valves and/or drain the pipes.
5. Gradually open and remove the priming plug. See fig.
The plug and non-return valve are one unit.
6. Clean the non-return valve with warm water and a soft brush.
7. Assemble the components in reverse order.
Fig. 21 Outlet and inlet non-return valves

9.2 Customer service information

For further information on service parts, see Grundfos Product
Center on www.product-selection.grundfos.com.

9.3 Service kits

For further information on service kits, see Grundfos Product
Center on www.grundfos.com.

10. Starting up the product after standstill

1. Check that the pump is not blocked by following the
instructions in section 10.1 Deblocking the
2. If the pump has been drained, it must be filled with liquid
before startup. See section
3. Start up the pump. Follow the instructions in section
4. Starting up the product.
4. The pump will remember the controller settings even if it is
turned off.
12
20 (5).
Outlet non-return valve
Inlet non-return
valve
pump.
4.1 Priming the pump.

10.1 Deblocking the pump

DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before starting any
work on the product. Make sure that the power
supply cannot be accidentally switched on.
The end cover incorporates a plug which can be removed by
means of a suitable tool. This makes it possible to deblock the
pump shaft if it has seized up as a result of inactivity.
Fig. 22 Deblocking the pump

11. Taking the product out of operation

If the pump is taken out of operation for a period of time, for
example during the winter, it must be disconnected from the
power supply and placed in a dry location.
Proceed as follows:
1. Stop the pump by means of the on/off button
2. Disconnect the power supply.
3. Open a tap to release the pressure in the pipe system.
4. Close the isolating valves and/or drain the pipes.
5. Gradually loosen the priming plug to release the pressure in
the pump.
6. Remove the drain plug to drain the pump. See fig. 23.
7. We recommend to store the pump indoors in a dry location.
Due to humidity, the disconnected pump must not be left
outside for a longer period of time.
Fig. 23 Draining the pump
.