Bedienungsanleitung Vonroc PW503AC (Seite 10 von 56) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Spanisch, Polnisch)

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• Turn Right to increase the amount of detergent

added.

5. MAINTENANCE

Before cleaning and maintenance, always

switch off the machine and remove the

mains plug from the mains.

Clean the machine casings regularly with a soft

cloth, preferably after each use. Make sure that

the ventilation openings are free of dust and

dirt. Remove very persistent dirt using a soft

cloth moistened with soapsuds. Do not use any

solvents such as gasoline, alcohol, ammonia, etc.

Chemicals such as these will damage the synthetic

components.

Water inlet ﬁlter (Fig. A)

The water inlet ﬁlter (3) must be inspected

regularly, so as to avoid blockage and restriction of

the water supply to the pump.

Cleaning nozzle (Fig. A, F)

When the nozzle is clogged, it may cause failure.

The nozzle can be cleaned by inserting the

‘cleaning pin’ (13) into the tip to remove ﬁlth.

Storage and frost protection

The high pressure cleaner and accessories that are

not completely drained can be destroyed by frost.

Completely drain the high pressure cleaner and

accessories and protect them against frost.

Keep the high pressure cleaner in well-ventilated

dry premises with temperature not going below

+5°C.

MALFUNCTION

Should the machine fail to function correctly, a

number of possible causes and the appropriate

solutions are given below:

1. When switched on, the machine will not start

working.

• Plug is not well connected or electric socket is

faulty.

• Check plug, socket and fuse.

• The mains voltage is lower than the minimum

requirement for start up.

• Check that the mains voltage is adequate.

• The pump is stuck.

• Refer to after storage instructions. Switch

off the unit and let the motor cool.

• Thermal safety has tripped.

• Leave the lance open with water coming

through.

2. Fluctuating pressure

• Pump sucking air.

• Check that hoses and connections are

airtight.

• Valves dirty, worn out or stuck. Pump seals

worn.

• Clean and replace or refer to dealer.

3. Water leaking from the pump

• Seals worn out.

• Check and replace, or refer to dealer.

4. The motor stops suddenly

• Thermal safety switch has tripped due to

overheating.

• Check that the mains voltage corresponds

to speciﬁcations. An extension cable, which

is too thin, and tool long can cause a voltage

drop and cause the motor to overheat.

Leave to cool down. Use heavy duty

extension cables.

5. The pump does not reach the necessary

pressure.

• Water inlet, ﬁlter is clogged.

• Clean the water inlet ﬁlter.

• Pump sucking air from connections or hoses.

• Check that all supply connections are tight.

• Suction/ delivery valves are clogged or worn

out.

• Check that the water feeding hose is not

leaking.

• Unloader valve is stuck.

• Clear or respire valves.

• Lance nozzle incorrect or worn out.

• Loosen and re-tighten regulation screw

check and/ or replace.

Repairs and servicing should only be

carried out by a qualiﬁed technician or

service ﬁrm.

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