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5

Troubleshooting 

Fault

Cause

Remedy

The pump does not run when the switch 

is pressed.

The plug is damaged.

There is insufficient voltage.

The pump is locked.

The thermal relay has triggered.

Check the plug and fuses to see if they 

are okay.

Manually turn over the motor.

Let the motor cool down.

The pump runs, however no pressure is 

generated.

The intake filter is clogged.

Air is being drawn in at the connectors.

The inlet and outlet valves are clogged 

or worn.

The diameter of the nozzle hole is too 

large.

Clean the filter.

Check the intake connection fitting and 

the hose connectors.

Clean or replace.

Check and replace.

The operating pressure is irregular.

Air is being drawn in.

The valves are clogged and worn.

The seals are worn.

Check the intake connectors.

Clean and replace.

Check and replace.

The motor suddenly stops.

The thermal relay has triggered due to 

overheating.

Check the voltage.

Turn off the switch and let the motor 

cool down for a few minutes.

The pump drips.

The seals are worn.

Check and replace (professional repair 

shop)

There is a loss of pressure.

The nozzle is worn.

The valves are dirty or clogged.

The valve seals are worn.

The seals are worn.

The filter is clogged.

Change the nozzle.

Check, clean, exchange.

Check and /or exchange.

Check and /or exchange.

Check and /or clean.

There is excess noise.

Air is being drawn in.

The valves are worn, dirty or clogged.

The bearings are worn.

The water temperature is too high.

The filter is dirty.

Check intake lines.

Check, clean, exchange.

Check and /or exchange.

Lower the temperature to below 60℃.

Check and /or exchange.

Expelled water is mixed with oil.

The sealing rings (water + oil) are worn. Check and /or exchange.

Water leaks from the pump head.

The seals are worn.

The O-ring of the seal set is worn.

Exchange the seal.

Exchange the O-ring.

When the switch is pressed, the motor 

hums but does not start.

The mains voltage is lower than that 

specified.

The pump is blocked or frozen.

The extension cable is insufficient (cross 

section too small, cable too long)

Check to see that the extension cable 

is sufficient.

Exchange the extension cable for one 

that is sufficient.

Discarding the machine

Carry out the following safety measures immediately, if you are no longer going to use the machine:

•  Pull out the plug and make the machine inoperable.

•  Store the machine in an area that cannot be reached by children.

•  Do not use any parts from the used machine as replacement parts.

•  Disassemble the machine and discard the individual parts in accordance with the regulation neforced in your area.

SAVE THESE INSTRUCTIONS

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