COATS 9500R Electro-Hydraulic Tire Changer - Manual (Page 23)

COATS 9500R Tire Changer • 19
Trouble
Pump motor turns but none of the
hydraulic movement works.
Pump motor does not turn but the
chuck motor operates normally.
The thermal switch that protects
the pump motor is very easily acti-
vated.
The circuit breaker is very easily
activated.
The transformer protection fuses
easily blow.
The chuck does not hold the wheel
firmly.
Cause
• The automatic circuit breaker is
off.
• A fuse of the low-voltage section
is blown.
• Transformer is burned out.
• The thermal safety switch pro-
tecting the hydraulic motor is/was
activated.
• The voltage of the electric line is
too low.
• The machine is not stable on the
floor.
• The electric cabinet is not firmly
attached.
• The voltage of the electric line is
too low.
• Short circuit in the electric cord
connecting the portable control
unit to the electric cabinet.
• 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.
Remedy
• Disconnect the machine from
electric supply. Open the electric
cabinet and check the automatic
circuit breaker and low voltage
fuses. Reset the circuit breaker or
replace the fuses as needed.
• This operation can be per-
formed only by qualified per-
sonnel.
• Call the authorized service center
for assistance.
• Disconnect the machine from
electric supply. Open the electric
cabinet and reset the thermal
safety switch.
• This operation can be per-
formed only by qualified per-
sonnel.
• Call the authorized service center
for assistance.
• Check voltage on electric supply.
• This operation can be per-
formed only by qualified per-
sonnel.
• Call the authorized service center
for assistance.
• Check that the machine is
securely bolted to the floor.
• Attach the electric cabinet firmly.
• Check voltage on electric supply.
• This operation can be per-
formed only by qualified per-
sonnel.
• Call the authorized service center
for assistance.
• Clean the teeth of the chuck jaws
with a wire brush.
• Replace the protectors for alloy
wheels.
• Call the authorized service center
for assistance.
10.0 Trouble Shooting