Shower Pump

[sadie100]

I have installed a shower pump with a Surrey Flange for the hot and a dedicated supply for the cold and it works fine ,but when the washing machine calls for hot water the pump starts.
Could you give possible reasons and solutions for this problem.

Thanks

Tim

 

[omegaman]

Is there a dedicated supply for the hot too? I imagine it is but your post doesn't state this clearly.

 

[sadie100]

The hot does have a dedicated supply from the S flange

 

[stardanny]

pump come on when washing machine call for hot water.....
what about hot tap in bathroom and kitchen? do pump come on when you turn tap on?

Is the check valve ( Non-return valve ) fitted on pump?

Dan

 

[sadie100]

Thanks Dan
The other hot taps dont start the pump its just the thud of the w/machine demand that starts it, and the flexi,s with iso,s are fitted but a check valve was not supplied in the kit Salamander RSP50

Tim

 

[stardanny]

Try turn off hot feed to pump ( iso valve ) and see what happen.

If it does stop pump coming on, you need to fit check valve, ideal on both feed ( hot + cold ) to pump.

Does the washing machine has 2 hoses? red and blue?

 

[sadie100]

w/machine does have 2 hoses and if i fit check valves will that not inhibit the flow to the pump.

Tim

 

[stardanny]

should not. The pump suction should open check valve when shower is running.

 

[sadie100]

THANKS EVERYONE FOR YOUR INPUT I FITTED A CHECK VALVE BETWEEN THE S FLANGE AND THE PUMP ON THE HOT SIDE AND THAT FIXED THE PROBLEM.
TIM

 

[seco services]

THANKS EVERYONE FOR YOUR INPUT I FITTED A CHECK VALVE BETWEEN THE S FLANGE AND THE PUMP ON THE HOT SIDE AND THAT FIXED THE PROBLEM.
TIM

now read the salamader instructions.
you should never fit a check valve to the supply to the pump it needs to vent back to the cylinder.

 

[omegaman]

Could you fit check valve after the pump although this won't help the OP in this case and will restrict the flow to the shower?

I've answered my own question so how can I delete this useless post?

 

[seco services]

after the pumps ok.

 

[Nige F]

Could you fit check valve after the pump although this won't help the OP in this case and will restrict the flow to the shower?

I've answered my own question so how can I delete this useless post?

You can`t - you are doomed to be regarded a fool forever ( join the club ) OP Run the washing machine on cold fill only - saves energy