Foam lance problemG

[Dr HMS Derv Destroyer]

Got a slight issue with my new foam lance, when attached to the karcher HDS at work , it makes the machine pulse and thus causing the machine to auto trip to save it f**king up.

Am i doing something wrong or is the lance possibly faulty?

Raz

 

[Yellow Dave]

I presume it doesn't do it when lance isn't attached?

I've only had this happen when the water feed hasn't been good enough and not allowing it to build enough or hold adequate pressure

 

[JD]

Yeah as above, my Karcher pulsed all the time when the motor was on the way out or water supply was lower than required.

If it only does it with the lance attached, your lance is either blocked or hasn't clicked in/locked in properly and is causing a back up.

Back up. Giggidy.

 

[Dr HMS Derv Destroyer]

Yupp, one makes it pulse. My other one I tried on it don't. Both using the same trigger . Just changed the actauall snow lance on the end of the trigger.

The karcher is attached to a huge surge tank and the pump is pumping out well over 100psi

And the speed fit on the Hp hose isn't leaking and locks properly.

 

[Dr HMS Derv Destroyer]

Also tried it on 60•c temp , that just makes it's worse lol. The burner backfires

 

[JD]

They have a gauze to stop crap being sprayed onto the car. This could be blocked. If you search how to clean them there is a guide somewhere. Might solve it.

Presume it's not new?

 

[Dr HMS Derv Destroyer]

its brand new. only tried it today. my old one works a treat but I don't want to leave it at work haha.

looking down the intake, it looks to small for the pressure behind it. its almost needle sized.

got to the point of wether I should strip it down to see whats not right.

 

[Yellow Dave]

Stripping it down is fairly simple for a non mechanic so sure you won't struggle.

http://www.detailingworld.co.uk/forum/showthread.php?t=84349

 

[Dr HMS Derv Destroyer]

stripped it down, the inlet thing inside is supposedly to small. hence the pressurewasher not liking the pressure creap.

think I ordered it for a newer HDS series not the old style one we use at work. ah well

 

[JD]

Hang on, if it's new, send it back?

 

[Dr HMS Derv Destroyer]

The guys are sending me another one out FOC .
Just a shame to chuck this one if i can make it work properly