[MAX Carpets]

Hi Guys

I am now on my 3rd pressure switch (above the demand pump) in as many months. I think that it is something to do with the ball valve in the header tank, as it seems the switch is constantly switching on and off, I think this is burning out the pressure switch.

My question is, do I have to buy this from Prochem? I really do not want to as the spare parts are a rip off, and I'm find them rude!

If I can buy this from a plumbers merchant,   what would I ask for

I hope this makes sense, I'm pretty useless with anything mechanical

Thank you in advance

Regards

Justin

[steve prince]

Hi Justin
It might be worth you giving GP cleaners a call 01452 731630

[MAX Carpets]

I think its just something to do with the valve on the header tank? Surely I can buy this from wicks, B&Q etc?

[mark shannon]

Try Hydramaster probably around £50 if I remember correctly.

[Tony Stewart]

Hi Justin
On my Steamway I had a 15l/min pump fitted and it drains the power, but I needed a strong demand pump to power a spinner hence the one I fitted. It was burning out microswitches in as many weeks as you. Chris at Alltec fitted a relay to take some of the power surge off the microswitch and problem was solved. It was easy to wire in, so I would give him a call.
I dont think it is anything to do with the ball valve - that just tells the pump to switch on or off because the float drops and opens the valve to let in more water provided by the pump.
Chris is on -  01763 208222

[MAX Carpets]

That's the problem, its not telling the switch to turn of the water. It's just clicking on/off rapidly and burning out the switch

[Doug Holloway]

Hi Guys

Chris is your man.

I had two ball cocks go so he fitted me one with a  stainless steel connection.

Problem solved.

What I like about Altec is that they know what they are doing and are polite and friendly with it.

Cheers

Doug

[Robin Ray]

On window cleaning demand pumps the pressure switches used to go for a pass time. We tried relays but eventually they developed electronic pump controllers which seem to eliminate the problem regardless of the flow or how many times the pump stops and starts. I'm surprised these haven't been adapted for use with truckmount demand pumps.

This is the company which manufactures them http://www.springltd.co/ they also have a section under the suppliers section on this forum.

[elliott cleaning]

.............. as it seems the switch is constantly switching on and off........

The pump is meant to switch off and on, Justin.  That's why it is called a 'demand' pump.   Which Shurflo pump are you using on your machine?

[alan lewis]

Justin

Not sure if this is your problem, but fitting one of these stops the pump switching on and off (Recycling) as much

http://pages.ebay.com/link/?nav=item.view&id=290840050688&alt=web

Alan

[alan lewis]

Oops i meant Cycling

[Brendan (chem2clean)]

Them switches only last about 6 to 9 months,never had it blow fuses do

[absolutecleaning]

I had the switch on the demand pump go on a regular basis when I had a Blazer.

Not sure if it's possible to do a similar mod to the way my Chemtex machine is now set up where the pressure switch is by passed and rather than a float valve in the header tank there is a float switch similar to this http://www.ebay.co.uk/bhp/horizontal-float-switch which turns the pump on and off?

[MAX Carpets]

I know they are meant to switch on and off, but I mean, constantly on/off on/off, no breaks, just repeatedly on & off