35
7. Troubleshooting
Fault
Possible cause
Remedy
Excessive vibration
or/and Unusual noises
Imbalance due to worn or broken tools.
Defective bearing.
Wrong tension of the belt.
Defective motor.
The scarifying setting is too deep.
Replace all worn or broken parts.
Check the bearing on the axle drive
shaft and replace if necessary.
Check the tension of the belt, replace
the belt if necessary.
Replace the motor.
Reduce the scarifying depth.
Reduced or no scarifying
performance
Tools have reached the maximum
permissible wear.
Inappropriate tools for the application.
Replace the worn parts.
Replace the tools with appropriate tools
for the surface to be treated.
Motor does not switch on
Missed phase.
Wrong phase.
Defective Component.
Dead man’s switch is activated.
Check the mains power supply and try
to switch on again.
Adjust phase.
Find fault and replace defective
component.
Follow the enclosed information of the
manufacturer (Diesel-motor).
Put the key of the dead man’s switch in.
Motor protection switch
triggers while running
Motor protections switch triggered because
of overload .
Motor has a defect.
Reduce the scarifying depth.
Check the motor.
Engine temperature
indicator lights up or
flashes during operation.
The engine temperature indicator only
flashes during operation if a problem arises
in connection with the exhaust gas return
system. This includes a dirty air filter. This
can be identified by the following flash code
of the engine temperature indicator:
▪ 7 times short flash (approx. 0.5
seconds) and 1 long flash (approx. 1.5
seconds).
▪ The flash code indicates that the air
filter must be cleaned or changed
(consult the Hatz manual).
▪ If a different flash code appears,
please contact the nearest Hatz service
station.
Engine will not start
Engine has shut down due to empty fuel
tank
Fill the fuel tank. Remove the access
cap for the fuel feed pump. Actuate the
manual lever on the fuel feed pump
until the fuel audibly flows back into the
fuel tank through the return line. Install
the access cap again and start the
engine. (See Hatz manual for details.)
