Grundfos SCALA User Manual

English (GB)
16
To remove the inlet 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. 19 (5).
6. Remove the drain plug and drain the pump. See
fig. 19 (8).
7. Unscrew the union nut holding the inlet
connection. See fig. 19 (7). Depending on the
installation type, it may be necessary to remove
the pipes from both the inlet and outlet
connections.
8. Pull out the inlet connection.
9. Pull out the inlet non-return valve.
10. Clean the non-return valve with warm water and
a soft brush.
11. Assemble the components in reverse order.
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. 19 (5). 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. 20 Outlet and inlet non-return valves
10.2 Customer service information
For further information on service parts, see
Grundfos Product Center on
www.product-selection.grundfos.com.
10.3 Service kits
For further information on service kits, see Grundfos
Product Center on www.grundfos.com.
11. Taking out of operation
For further information on how to take the product
out of operation, see end-of-life documentation on
www.grundfos.com.
TM06 4331 1915
Outlet non-return
valve
Inlet non-return
valve

Grundfos SCALA Specifications

General

Frequency	50/60 Hz
Maximum Suction Lift	8 m
Installation	Horizontal
Approvals	CE
Pumped liquid	Water