[Peter_Jones]

Does anyone know what the pump flow should be on a CFR 500 Perfectheat?

I tested mine today and it came out at 4.5 l/min, I'd like to know if this is correct.

[garry22]

Just rebuilt a 400 psi one today!

As far as I know, the maximum flow rate for that pump is 5 L/ m

Try the Pumptec website   http://www.pumptec.com/PDFs/Catalogs/Carpet_Catalog08.pdf

[Peter_Jones]

Nice one! Is it Pumptec pumps that are in CFR stuff then? Which one will mine be? And also - how much are they from Pumptec? Thanks.

[garry22]

Peter,

Yes it's a pumptec one.

I had a spare repair kit so I rebuilt mine today. Halfway through, I went to check something on the Amtech site and noticed that they were selling the blue 500 psi one for £ 234.00 plus VAT.

Repair kits are quite expensive and I also had to de-scale the inside chambers.

Next time around, it may make more sense economically to replace the whole thing without messing.

[Peter_Jones]

You say "blue 500psi", is the colour important - mine is red, does that mean a different pressure rating?

How long did it take for you to service your pump, and had you done one before, also did you need any specialist equipment?

I don't think anything is wrong with my pump although it could be a little worn. When I first got the machine if I switched the pump off at say 200PSI the gauge would stay at 200PSI which must mean that the system was totally water-tight internally - however now it immediately drops back down to zero which suggest internal leakage in the pump or across the relief valve on the front of the machine.

Also, virtually every time I use the machine now I have to prime the pump where as before I never had to.

[Len Gribble]

Think garry may be right


Peter

Think pumptec only sell via there agents inside workings tools allen key and normaly af spanner it’s American 

[Andy Foster]

You should always turn the pressure down before switching off the pump.

[Len Gribble]

You also should maintain the regulator make it easer too turn up/down

[John Milnes]

As the above pictures show, it should be noted how the seals and washers are removed so that the new ones can be put back in in the right order.

The bronze bushes can be siezed in to the head and can be removed by using a heat gun on the surrounding alloy head and use the old piston with a hammer to gently work them out while the head is warmed up.

Repair kit around £40 which comes with tube of silicone grease to which you apply to new seals and piston.

[garry22]

Does that kit include the stainless plunger and the bronze bushes?

[garry22]

Peter,

The model number appears to be identical ( 71540A) so colour perhaps is not important.

The whole job was completed today. The actual rebuild took less than an hour.

I have the older Pro Ozone 400 and everything is crammed into a tiny space. Removing and refitting is the time consumer (some Allen keys can only br turned a quarter at a time).

In the photo's, notice I've marked the inlets / outlets with a number. There are about six different connectors on mine (extra ozone pumps etc) and you need to know which one goes where when it goes back.

Tools.. Allen keys, grease  for the rebuild. Spanners, etc for the amateur gyenacology!

[John Milnes]

Garry,

It includes all you need, piston seals, washers, silicone and bronze bushes.

There is a seperate kit for 'O' rings and valves but you will not need them.

Smear all seals and piston with silicone grease when re fitting.

Check for play in motor spindle and the offset bearing which drives the pump...

Another problem with these pumps....if motor stops but will restart by hand when seperated from pump by twisting the shaft, it means the capacitor is f**ked.
I'v just had to replace a cacitor on another Pumptec motor

[Peter_Jones]

You should always turn the pressure down before switching off the pump.

I don't think that this is true, I have heard people say this but it doesn't mention it anywhere in the manual.

Turning the power off to the pump is only the same as releasing the trigger on the hose when working at high pressure.

In any event, even if there was a danger of damaging the pump - instead of turning the pressure down just pull the trigger before switching off so that there isn't such a sudden stop.

[garry22]

Carpet guy,

The last time I bought a kit was the best part of ten years ago and was £ 70.00 then.

I had this one as a spare (have not used the CFR for a long time). It looks like the prices have dropped considerably. Was it from Amtech?

Garry

[Adam Fearnley]

Len,
        How many hours had that pump done?

[John Milnes]

I think about £38 from Ashbys for the piston & seal kit last year.

The only prob I'v had with pressure dropping is when the seals have leaked or when the capacitor is dying....just replaced a capacitor on a different Pumtec motor, but then the motor just stopped.

[garry22]

Thanks, I'll keep them in mind.

[Len Gribble]

Adam

Sorry don’t know it’s not mine just repairing it.  I wouldn’t have thought many he’s a part-timer, I seem to-be getting a bit of a rep locally repairing machines had a SM bloke round today unblock his jets on wand and hand tool.

OH it’s didn’t come out of a CFR machine by the way lot of other companies use this pump


£38 quid 

[Vernon Purcell]

The red colour is just CFR colours

[Adam Fearnley]

Should both inlet hoses be full of water? because only one of mine are while the other is only part full all the time, hmm