Problem
Cause
Remedy
Motor hums but does not run
Mains voltage too low
Check electrical connection
when switched on
Spray gun closed
Actuate spray gun
Pump stiff
Turn motor by hand as described
(blocked or frozen)
for "Starting up after prolonged
storage" (User Manual)
Extension lead with wrong
Use correct cable cross-section
cross-section
(see User Manual)
Motor does not start
Connector has not been plugged
Check plug, cable and switch
when switched on
in correctly, break in power supply
Mains fuse has been tripped
Refit mains fuse
Motor stops
Overload protection (in winding)
Check that supply voltage matches
tripped because motor
specified machine voltage.
overheating or overloaded
Switch off machine and allow
to cool for at least 3 minutes.
Spray head soiled
Clean nozzle in spray head
Note: A correct power supply is essential if the machines are to operate faultlessly. The voltage drop in the
motor during operation must not be excessive, otherwise the motor will turn too slowly and take up too much
power. This causes the windings to heat up and the overload switch cuts out the machine after only a short
period of operation. Moreover, the machine cannot build up the rated power output and problems may arise
during the starting phase, i.e. between switching on the motor and reaching the nominal speed.
4.2
Electric motor
RE 140 K, 160 K
7
