monty 4400
Betriebsanleitung
Operator’s Manual
Notice d’ utilisation
Modéle :
monty 4400
_D _GB _F - Release B April. 09
HOFMANN behält sich das Recht zu Änderungen ohne Vorankündigung vor _ HOFMANN reserves the right of modification without notice _ Document non contractuel
50
10.0 TROUBLE SHOOTING
TROUBLE
CAUSE
REMEDY
Pump motor turns but none of the
hydraulic movements works.
•
The automatic circuit breaker is
off.
•
A fuse of the low-voltage sec-
tion is blown.
•
Transformer is burnt out.
•
Disconnect the machine from
electric supply. Open the elec-
tric cabinet and check the au-
tomatic circuit breaker and low
voltage fuses. Reset the circuit
breaker or replace the fuses as
needed.
•
THIS
OPERATION
CAN
BE
PERFORMED ONLY BY QUALIFIED
PERSONNEL.
•
Call the authorized service cen-
ter for assistance.
Pump motor does not turn but the
chuck motor operates normally.
•
The thermal safety switch pro-
tecting the hydraulic motor
is/was activated.
•
Disconnect the machine from
electric supply. Open the elec-
tric cabinet and reset the ther-
mal safety switch.
THIS
OPERATION
CAN
BE
PERFORMED ONLY BY QUALIFIED
PERSONNEL.
The thermal switch that protects the
pump motor is very easily activat-
ed.
•
The voltage of the electric line is
too low.
•
Check voltage on electric sup-
ply.
THIS
OPERATION
CAN
BE
PERFORMED ONLY BY QUALIFIED
PERSONNEL.
The circuit breaker is very easily ac-
tivated.
•
The machine is not stable on the
floor.
•
The electric cabinet is not firmly
attached.
•
The voltage of the electric line is
too low.
•
Check that the machine is se-
curely bolted to the floor.
•
Attach the electric cabinet firm-
ly.
•
Check voltage on electric sup-
ply.
THIS
OPERATION
CAN
BE
PERFORMED ONLY BY QUALIFIED
PERSONNEL.
The transformer protection fuses
easily blow.
•
Short circuit in the electric cord
connecting the portable control
unit to the electric cabinet.
•
Call the authorized service cen-
ter for assistance.
The chuck does not hold the wheel
firmly.
•
The teeth of the chuck jaws are
full of dirt or worn out.
•
The protectors for light-alloy
wheels are damaged or worn
out.
•
The check valve or manifold of
the chuck cylinder leak oil..
•
Clean the teeth of the chuck
jaws with a wire brush.
•
Replace the protectors for alloy
wheels.
•
Call the authorized service cen-
ter for assistance..