Showermate issues after swapping old for new

[Frazer1981]

Hi, just wondering if anyone has some advice!

Changed a showermate pump in the week, old one was a 1.4 twin but apparently this isnt made anymore so i swapped with a 1.8 twin.

The issue is now the shower pump kicks in on hot only. As i get further round to cold the pump stops. Ive read the old shower pump needed a minimum of 0.5bar inlet whereas this new 1.8 pump needs a minimum of 0.8bar. Could this be the issue or am i missing something else more obvious? All pipework etc is exisiting, i just changed hoses and pump.

Sods law it went on the hottest week of the year when customer wants a cooler shower as at any other time this issuue wouldnt of been noticed!

Is there aa boosting pump i can put on my cold suppy from the tank to increase that pressure upto 0.8bar.

Should add its a gravity system, tank in loft and cylinder in airing cupboard.

Thanks in advance

 

[steadyon]

The 1.8 requires 0.8 litres per minute flow, not 0.8 bar pressure.

I'd be looking for a restriction in the cold feed, for example if the isolating valve in the flexible input hose is not fully open.

 

[Frazer1981]

Ok thankyou will have a look at that

 

[ShaunCorbs]

its not the shower is it ? , also have you checked the shower strainers ?

 

[Frazer1981]

its not the shower is it ? , also have you checked the shower strainers ?

Shower strainers appear to be buried in the wall?

 

[ShaunCorbs]

Shower strainers appear to be buried in the wall?

Any chance of a pic of the shower ?

 

[Frazer1981]

Will get one on here soon, dont know how to add a pic?!!

 

[Frazer1981]

Sorry but how do i post a picture on here?!

 

[ShaunCorbs]

You will see upload a file next to post reply

Click upload a file

Find the picture

Click and upload

 

[Frazer1981]

Ok thankyou

 

[Frazer1981]

Another one

Thankyou again

 

[Frazer1981]

Any chance of a pic of the shower ?