- 20 -
Cont ...
Once the flow switch assemblies have been removed the NRV is now accessible as shown in
Fig. 33.
•
Remove ‘O’-ring (item 9) from between pump body and flow switch assembly.
•
Firmly pull the NRV assembly (items 10/11) from the lower end of the flow switch body
assembly (Fig. 34).
•
Remove ‘O’-ring (item 12).
•
REASSEMBLY
Reassembly is reverse of disassembly instructions, ensuring all re-used parts are clean, and
new replacement parts fitted as required.
Secure flow switch manifold clamp screws to a torque of 1.5 Nm (item 9).
•
INITIAL OPERATING INSTRUCTIONS
•
Consult instruction manual for commissioning instructions.
•
Do not run pump dry. Allow the water to be pumped to enter the pump body thus ensuring
the seal is lubricated before switching the pump on. Failure to do this will damage the
seal.
•
Carefully check pump and pipework for leaks whilst pump running and stationary before
leaving the installation unattended.
Fig. 34
Flow switch body
11
9
10
12
