MADER POWER TOOLS APW-VQA-130P, Operating Instructions Manual, Page: 41 / 47

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When
switched on
the machine
will not start
working.
Plug is not well connected or electric
socket is faulty.
The main voltage is insufficient, lower
than minimum requirement.
The pump is stuck.
Thermal safety switch has tripped.
Check plug, socket.
Check that the main voltage is
adequate.
Refer to after storage instructions.
Switch off the unit and let the motor
cool for a few minutes.
Leave the lance open.
Fluctuating
Pressure
Pump sucking air.
Valves dirty, worn out or stuck.
Pump seals worn out.
Check that hoses and connections are
airtight.
Clean and replace, or refer to dealer.
Water leaking
from the pump.
Seals worn out. Check and replace, or refer to dealer.
The motor
stops
suddenly.
Thermal safety switch has tripped due
to overheating. Check that the main voltage
corresponds to specifications.
Switch off the unit and let it cool for a
few minutes.
The pump
doesn’t reach
the necessary
pressure.
Water inlet filter is clogged.
Pump sucking air from connections or
hoses.
Suction/ delivery valves are clogged
or worn out.
Unloaded valve is stuck.
Lance nozzle incorrect or worn out.
Clean the water inlet filter.
Check that all supply connections are
tight.
Check that the water feeding hose is
not leaking.
Clear or replace valves.
Loosen and re-tighten regulation
screw.
Check and/or replace.