Varispeed 50 shower pump. Constantly on.

[phillsmit3]

I've had to isolate the power to my shower pump because it is staying on even when it is not supplying water.
It is a Newteam varispeed 50
I am not the best diyer but am also not stupid.
First of all I am wondering if there is any quick fix?
E. G. Banging it to release a reed? Or if I should bother unscrewing the bit near the outlet pipes where the switch is located.

Then I was thinking of isolating the water supply to the pump and switching it back on just to make sure there wasn't a leak anywhere and to be sure that it is a stuck switch.
If I did this would it damage the pump if it turned on with no water going through it?

The with the water supply isolated I was going to take off the pipes and see if there is anything dodgy to see?

Am I thinking correctly or is there something I am missing or should/shouldn't be doing?

 

[thereisawizza]

You can try tapping the ends (lightly!) to release the flow switch, more than likely you will need a new pump though.

 

[Old Account]

close both isolating valves on the outlet side of the pump or the service valves and see if the pump stops. If it does then this indicates there must be a tap or outlet being pumped that is open to atmosphere...
If the pump doesnt stop at all when closing the valves then check to see if the reed switch on either side have become dislodged.. You also could unclip each reed switch (one at a time though) to see if this stops the pump if so the float is stuck up inside and needs removal and cleaning / replacement.

 

[Old Account]

close both isolating valves on the outlet side of the pump or the service valves and see if the pump stops. If it does then this indicates there must be a tap or outlet being pumped that is open to atmosphere...
If the pump doesnt stop at all when closing the valves then check to see if the reed switch on either side have become dislodged.. You also could unclip each reed switch (one at a time though) to see if this stops the pump if so the float is stuck up inside and needs removal and cleaning / replacement.

 

[rpm]

Then I was thinking of isolating the water supply to the pump and switching it back on just to make sure there wasn't a leak anywhere and to be sure that it is a stuck switch.
If I did this would it damage the pump if it turned on with no water going through it?

Wouldn`t damage the pump if you did this just for 10 seconds, depending on how old the pump is it might be time to replace it.