Bedienungsanleitung Ferm GRM1017 (Seite 9 von 16) (Englisch)

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Water inlet filter

Fig. 4

• The water inlet filter must be inspected regu-

larly, so as to avoid blockage and restriction of

the water supply to the pump. (fig 4)

Using the detergent bottle

Fig. 5

• Add detergent to the container.

• Set the Adjustable Spray Wand at low pressure

position.

• Trigger gun to spray detergent.

The use of detergents can dramatically reduce

cleaning time and assist in the removal of difficult

stains. Some detergents have been customized

for pressure washer use on specific cleaning

tasks. These detergents are approximately as

thick as water. The use of thicker detergents,

such as dish soap, will clog the chemical

injection system and prevent the application of

the detergent. The cleaning power of detergents

comes from applying them to a surface and

giving the chemicals time to break down the dirt

and grime. Detergents work best when applied

at low pressure. The combination of chemical

action and high pressure rinsing is very effective.

On vertical surfaces, apply the detergent starting

at the bottom and work your way upward. This

will prevent the detergent from sliding down and

causing streaks. High pressure rinsing should also

progress from the bottom to top. On particularly

tough stains, it may be necessary to use a brush

in combination with detergents and high pressure

rinsing.

CAUTION! Never disconnect the high-

pressure hose from the machine while

the system is still pressurized.

Follow the correct procedure:

1. Turn off the pressure washer by using the

switch on the machine.

2. Unplug the unit from the power source.

3. Turn off the water supply at the tap.

4. Press the trigger of the gun to depressurize the

system.

5. Disconnect the supply hose to the machine

6. Wipe all surfaces of the unit with a damp clean

cloth.

7. Engage the safety lock.

5. SERVICE & MAINTENANCE

Warning! Unplug the electric cable

(power source) prior to any maintenance

or preparatory storage operations.

• Make sure that the machine is not live when

carrying out maintenance work on the motor.

• To ensure good performance, check and clean

the suction and detergent filters after every 50

hours of operation.

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

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