[stevehinnis]

When I set the gauge on my  CFR 500 to 500 psi.the upholstery
Tool works fine and the pressure gauge stays at 500.If I connect the glide wand or stair tool, when I depress the trigger the pressure gauge drops  To 100 psi.What do you think is the problem.
Steve.

[stevehinnis]

Just as I thought.
No one gives a fluck

[Mike Halliday]

or perhaps no one so far knows, but give it more than half an hour and you might get an answer :

[richy27]

Just a guess but if your upholstery tool keeps up the pressure i think it could possibly be a prob witht he wand maybe try another wand or change the k valve and see if that make sa dif.  Bit of a strange one. but thats my hunch

[stevehinnis]

Blimey Mike.
Now I know how to get a quick answer.With your wealth of experience, dont you know.

[Mike Halliday]

has it always done it or has it just started?

if you allow a lot of flow through the pump then the pressure will drop, a pressure gauge measures 'trapped' pressure, if you put an open pipe on a pump then the pressure gauge would read zero

this is why it hold up with a restrictive small jet of the upholstery tool, but drops  with the large Orifice of the floor wand jet

[Darren O]

Dont think its anything to do with your wand or hand tools i used to get the same problem with the Hydramaster Raptor you will need somebody like Amtech to look at the pump it might need serviced.

[clinton]

Steve are you saying when you connect the stair tool the water output drops as well or just the gauge

[Darren O]

AJB is your man think he knows his stuff about these pumps.

[Steve. Taylor]

Steve not familiar with you machine, but if your pump is  dropping psi the plunger could be sticking service pump checking plunger and seals just a hunch hope this helps

SORRY FOR THE SLOW REPLY EVEN GOD RESTS ON SUNDAY

[stevehinnis]

Yes Clinton. When I connect the stair tool the gauge drops and the water pressure fom the jets drops.

[stevehinnis]

Mike.Because the wand has 3 jets compared with 1 on the upholstery tool,is that why the pressure gauge drops.And Richard,I will try another wand.
Steve.

[Joe H]

I would have thought the drop should normally be about 50psi.
If you have a Wonderwand with standard jets I think thay are not very big jets anyway.

[stevehinnis]

Joe. It drops from over 500 to 100.

[Ken Wainwright]

Think of the PSI as being a measure of resistence to flow.

Closed valve=total resistence, maximum pressure reading on guage.

Single small upholstery jet=high resistence to flow and high guage reading on open valve.

Floor wand with high flow jets=minimum resistence to flow and low guage reading on open valve.

If the open valve readings are lower than they should be, there is a fault or obstruction somewhere. This could be in the wand valve or possibly detergent residue build up, especially if powder detergents have been used. I used to encounter this myself with my Flojet/Shureflo pumps, so just ran some very hot water through the pump which solved the problem.

Most likely cause is wear in the internal pump components. A service should cure this. The two service kits required for a Pumptec pump cost me about £75 last time. More if you need a new cam/bearing kit. Labour is extra, plus Vodka And Tonic.

When all is repaired and working well, may I suggest recording flow rates through your wand and other tools at certain pressures. You will then have a reference point for the future.

Safe and happy cleaning
The Ken

[stevehinnis]

Ken. The gauge readings on the single upholstery tool stay high. The stair tool is only a single jet, but causes the gauge to drop to 100.I don’t understand why the pressure keeps up on the upholstery tool even though the stair tool only has 1 jet.

[Andrew Briscoe]

You could have different size jets in upholstery tool compared to stair tool, check what size they are, stamped into face of jet, 1 could be an 01 and maybe the other an 04 or higher, i am refering to the last 2 numbers on the jet, 01 puts out much less than say 06 and will hold up pressure better.

Andrew

[Ken Wainwright]

It's the combined size of the jets that matter Steve, not the number of jets. A typical upholstery tool will have an 01 which will pass 0.1 gallons (US) @ 40psi, more at higher pressures. A typical single jet floor hand tool will have an 04 or even 06 jet, so will pass 4 or 6 times more water than the upholstery tool. If it's a worn jet, even more. 50% more isn't unusual. So, it's possible for a hand tool to have a higher water flow than your floor wand.

Safe and happy cleaning
The Ken

[Steve. Taylor]

Steve the 2 posts from ken & andrew are spot on your looking at this problem from the wrong end of the hose check cam bearing plunger pump  seals.

PFSI = POUNDS FORCED PER SQUARE INCH THE F WORD WAS DROPPED MANY YEARS AGO

DONT TELL GORDON RAMSEY HE WOULD NOT BE HAPPY

[Doug Holloway]

Hi Guys

Have you tried the filters, it may be that you are just not getting enough flow to maintain pressure on larger wand.

Cheers

Doug