Author Topic: Karcher pressure washer problem..  (Read 2495 times)

Offline BANDIT2

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Karcher pressure washer problem..
« on: January 20, 2021, 04:38:53 PM »
I seem to recall a member of vod was connected somehow with karcher? Maybe a service tech?
Are you on here?
It's an industrial one not a cheap DIY one so worth fixing.
I've done a lot of fiddling and fixed the issues it obviously had but it won't make pressure and I'm pretty sure the issue is with the high pressure pump but there's no info on the net that I can find that helps.
It's a karcher HDS 601C.
Running [if I get enough veg] Defender 200TDI and Winnebago Lesharo (now gone)Range Rover P38 ,and a space heater on home made bio.

Offline nigelb

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Re: Karcher pressure washer problem..
« Reply #1 on: January 23, 2021, 09:41:21 AM »
No luck finding the guy Bandit?

I'm not sure how helpful they will be but you could contact a company in Sileby, Leicestershire that we supply with chemicals. They are official Karcher dealers, selling and servicing. They may help you over the phone. They are Alpha Power Cleaners.

Offline knighty

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Re: Karcher pressure washer problem..
« Reply #2 on: January 24, 2021, 10:19:17 PM »
what's the symptoms?  just low pressure?

not a karcher tech, but I've fixed a few / worked on them quite a bit

how's it feel when you use it?  does it feel like the water pulsing?

that normally means it's the valves... they're not too expensive


if it's just low pressure... I'd say it's the pressure regulator valve thingie... does screwing it in/out make any difference at all?


is it steam too?  fed from a small tank with the float in it?  I've always bypassed those tanks so the pump is fed directly from the mains feed in... you normally need to add in a T piece for the tank return

Offline BANDIT2

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Re: Karcher pressure washer problem..
« Reply #3 on: January 24, 2021, 11:51:28 PM »
Sorry guys. I've got bloody covid as has the wife. Very sleepy and weak at the moment.
I'll reply proper when I'm better.
Running [if I get enough veg] Defender 200TDI and Winnebago Lesharo (now gone)Range Rover P38 ,and a space heater on home made bio.

Offline nigelb

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Re: Karcher pressure washer problem..
« Reply #4 on: January 25, 2021, 10:01:15 AM »
Get well soon Chris.

To all you covid denyers...put on a mask and take the vacine when its your turn.

Offline knighty

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Re: Karcher pressure washer problem..
« Reply #5 on: January 25, 2021, 10:30:20 AM »
Sorry guys. I've got bloody covid as has the wife. Very sleepy and weak at the moment.
I'll reply proper when I'm better.

hope you're better soon :-)


To all you covid denyers...put on a mask and take the vacine when its your turn.

a few months back I was dating a very attractive and pretty frisky woman... I knew it was too good to be true

we were sitting on my sofa one night when she said "look at this" and handed me her phone so show me a text... a text she genuinely believed came from the Chinese secret police... detailing how covid19 was sent my aliens to punish the Chinese for not doing what the aliens tell them to do...  on and on like that   :o

(turns out she also believes the Queen is a shape shifting alien who used to be Dracula... and she eats children too)

yeah... so that was the last time I saw her 

Offline Jamesrl

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Re: Karcher pressure washer problem..
« Reply #6 on: January 25, 2021, 04:23:24 PM »
Blymee, she must be really gullible!!!

Well she went out with you, has she seen you without the paper bag?

Seeing you without the bag will confirm her worst fears, there are Aliens on Earth.
« Last Edit: January 25, 2021, 06:47:40 PM by Jamesrl »

Offline BANDIT2

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Re: Karcher pressure washer problem..
« Reply #7 on: January 26, 2021, 10:15:49 AM »
Bit better now :)
Wife is more or less back to normal thank God.
Knighty- sent you a PM I think.
I'm hoping you are a knighty in shining armour..
 8)
Running [if I get enough veg] Defender 200TDI and Winnebago Lesharo (now gone)Range Rover P38 ,and a space heater on home made bio.

Offline knighty

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Re: Karcher pressure washer problem..
« Reply #8 on: January 26, 2021, 11:09:17 AM »
I'm sorry Jim, it's time to level with you, the real reason for the paper bag is to reduce my peripheral vision so I don't accidentally look at your ugly old face :-(

I was going to try some blinkers like a house uses, but I was worried the leather gubbins at the BBB turning everyone on and me not being safe :-o

Offline knighty

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Re: Karcher pressure washer problem..
« Reply #9 on: January 26, 2021, 11:09:45 AM »
I'm hoping you are a knighty in shining armour..

bit rusty but trying me best!

Offline BANDIT2

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Re: Karcher pressure washer problem..
« Reply #10 on: Today at 12:50:25 PM »
Wow! Over 4 yrs I've been messing with this thing, on and off of course.
Anyway..I've fixed it!
Symptoms were, motor pulsed when switch on and then the mcb would trip. The heater coil was blocked solid so I got a new one ages back, didn't cure it although water would now run through it but no pressure at all.fitted all new valves to the pump head, no differance, got a good used pump head, no differance. This thing is an industrial hot and cold pressure washer so worth spending some cash on it but I was up to nearly £400 by now and seriously thinking of breaking it for parts, it was doing my head in!
The pump head has two switches that operate by water pressure and control the contactor in the electrical box, when you let go of the lance trigger, excess pressure builds up very quickly closing one of the switches and removes the supply to the contactor and the machine stops.
When you pull the lance trigger again something electricery happens from the other switch and the motor starts up again.
Are you bored yet? No! OK, I'll continue.
This thing was free, didn't work, giver new nowt about it.
Turned out the two switches were wired wrong, back to front basically, only found out when I managed to get a wiring diagram and translate it from german.
Works a treat on cold but the burner wouldn't fire up. That was just a knacked fuel pump solenoid, bit pricey at £55 but that all works now. Bit smokey ill play with the burner nozzle and air settings which should cure that.
Well happy with it now.
Running [if I get enough veg] Defender 200TDI and Winnebago Lesharo (now gone)Range Rover P38 ,and a space heater on home made bio.