Clemas & Co DEMON HURRICANE, Руководство оператора

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I can’t get the pressure to where it used to be –
where do I start?
Demon Technical Support 01752 ‐ 690690
Well by now you should know to check the nozzle ‐ assuming that is correct and you still have no or low
pressure the golden rule is to connect the pump to the mains water supply ‐ whichever machine you are
testing start with a good mains feed.
1. With the gun and lance connected turn the tap on ‐ can you see a leak? If so there is your problem, if
water can leak out air can get in and the pump won’t produce pressure ‐ simple as that. (Leaks from
underneath the pump are either worn seals or a cracked piston ‐ strip to find out which.)
Remedy: Fix leak or replace seals or piston.
2. Check enough flow of water can get into the pump. Make sure all the filters are clean. The new Tempest
hot water machines have a fine filter which will remove most solids. All Demon machines are now double
filtered. Have you checked both of them?
Remedy: Strip and inspect filters.
3. There are no leak’s what next? With the pump switched off pull the trigger, water will spray out. Keeping
the trigger pulled switch the pump on, if the water spray does not improve the valves are the fault. Either
worn out or dirty. Strip and inspect. (The high pressure hose will also vibrate on the ground.)
Remedy: Replace or clean valves.
4. The valves are OK there are no leaks but it still won’t get up to pressure – what next? The unloader valve
piston and seat are damaged or worn allowing some of the water to circulate around the cylinder head ‐ strip
and inspect, you will see any damage.
Remedy: Strip unloader and inspect ‐ replace damaged parts.
5. My cold water pressure washer does not feel as powerful as it used to be but the pressure gauge shows
the correct pressure. What causes this?
The chemical pick ‐ up has a nozzle of 1.8mm or 2.0mm size and can
get partially blocked. This will allow some but not all of the water to flow to the lance.
Remedy: Strip and remove the blockage.
6. The pressure remains high even when I let go of the trigger and the engine or motor is struggling or
stalling. The non ‐ return valve in the unloader is damaged or jammed.
Remedy: Strip and clean or replace.