[jeff1966]

Hi all, im losing pressure when the pump is any higher than 200psi,the gauge reads 500psi then as soon i press the trigger it goes back down to 200psi on the gauge.The pump head was rebuilt 2 months ago everything as been fine untill a couple of days ago,tried all the usual stuff to get rid of air locks had the regulator pin out and run the pump for 3 secs but no joy.If anyone as any ideas I would appreciate it.
                               regards Jeff.

[Mike Halliday]

I find on my pump when i get full pressure but lose it as soon as i press the trigger its a blockage on the supply side.

its like the pump has the water inside to get to the pressure i need but as soon as i press the trigger that water is pushed out but no other water is pulled into the pump to keep the pressure up..... so without water going into the pump it can't maintain  pressure

check the pipe that leads from the fresh tank into the pump. is it kinked or does it have a filter that could be blocked

[jeff1966]

Hi Mike,thanks for your reply.checked the filter its fine and cant see any kinks in the pipes.
                             cheers Jeff.

[JandS]

You say the pressure drops when you open your wand
or hand tool. Does it stay 200psi with trigger kept open?
Think that's normal.
Mine drops as soon as I open the trigger and stays dropped
but as soon as I close it it goes back to 500.
I only had it serviced last week and it got the OK and it's been
like that before the service.

John

[jeff1966]

Hi John,no it not normal the gauge should maintain the same pressure when the trigger is pressed.
                                      cheers Jeff

[Mike Halliday]

the pressure gauge measures 'trapped pressure' when you pull the trigger the pressure will drop how much it drops is determined by what jets you have in your wand. if you fit an open pipe it will drop to zero as there is no restriction to the flow if you have a small upholstery jet( 001) then even when you pull the trigger their is still a lot of restriction to the flow so the gauge will read quite high

[Vernon Purcell]

Hi John,no it not normal the gauge should maintain the same pressure when the trigger is pressed.
                                      cheers Jeff

You will lose some presure, but it should only be minimal. first change your jets, then replace the piston seal in your bypass valve, as this can leak internally, giving you reduced pressure

[Carpet Dawg]

I was having alot of air lock problems with my airflex recently. And was losing pressure pretty much everytime i squeezed the trigger.
About a month ago i disconnected the pipe that takes water from the soloution tank, disconnected it from the pump. And with the aid of a small funnle, i poured boiling hot water down that pipe! The end was pointed in to a bucket....

Anyways, since then its working fantastic! Like new again! I presume i got rid of all the crap, limescale, hard water residue and all the crap from using powdered detergants!
I knew the pump wasn't a problem and i could see that there was no kinks, the jets where newish etc

Try it! Specialy if your a powdered detergant guy like me.

Tony

[JandS]

Mike's right it's the pressure in the system.

John

[Joe H]

Try it! Specialy if your a powdered detergant guy like me.

Tony

My advice would be to stop putting power through your pump - unless you like buying new pumps at a few hundred quid a time.  There are better ways.

[JandS]

Which is the piston seal and bypass valve.
When I open trigger psi goes from 450 to
250, is this normal??

John

[Joe H]

Too much of a drop John, I would have thought about 50psi would be the norm.
Dont know the solution, sorry

[jeff1966]

Been in touch with Amtech yesterday they think I might have some crap lodged in one of valves in pump head,tomorrow im going to strip it down and have a look.I will report back tomorrow.
                            Jeff

[John Milnes]

Tony20,

as regards the Airflex....this could be the problem.

The intake pipe in the freshwater tank has a filter attached and is pushed onto the solution hose.
Now, if this filter is pushed onto the solution hose fully, any small amount of fluff that builds up on the filter will cause the pump to lack flow and consequently restrict output to the wand which will undoubtedly look like the pump is failing.

The filter is dome shaped and has a reasonable surface area. If the solution hose is pushed fully into the filter, that surface area is reduced substantially thus reducing flow.....add a little fluff and the flow is reduced making noises at the pump trying to cope and little water comming from the wand.

So with regards the Airflex, the soluion line hose needs to be inserted just inside the filter to allow it to have free flow. Fit a jubillee clip to prevent the hose going fully into the filter. I'v raised this with Cleensmart and it has been acknowleged.

[Carpet Dawg]

Thanks, i'll look into that.

I usualy run the filter under the tap every night while i run water through the system.

Tony

[jeff1966]

Hi,just stripped down the pump head.Couldnt see any crap in the valves just 2 tiny hairs so put it back together and its running great.I didnt think 2 tiny hairs would have that effect but according too Amtech hair will stop the valves from opening full.The maine cause of this is the crap design,vac hose attatchment directly over the solution tank.
                             cheers Jeff

[JandS]

Don't know what my problem is then, only serviced last week
and got the ok and it was doing it before the service.
Will ring the engineers tomorrow.

John