Repair Electrical Malfunctions - Rothenberger BS 450 Instructions D'utilisation

8.4

Repair electrical malfunctions

Warning!
Electrocution hazard!
Only an electrician may repair an electrical malfunction of the machine's electrical
equipment if these activities differ from operating tasks. The repair must be con-
ducted according to electro-technological regulations.
Danger!
Running saw band may cause serious severance injury!
• Before repairing a malfunction press the Emergency off button so the motor is not
accidentally turned on.
• The malfunction may only be repaired by one person at a time
Go through the table from top to bottom when searching for the cause of the malfunction.
Malfunction
The saw-band motor cannot
be activated, saw-band
motor starts not to run
After switching on saw band
runs in the wrong direction
The motor is buzzing after
switching on and does not
come up to rated speed
Cause
Main switch turned off
The machine is not connect-
ed to power supply
Power failure
Circuit breaker triggered in
supply cable
Power supply is defective
Safety push buttons not
pressed
Check phase rotation
Rotating field of power line is
incorrectly
Missing phase in power
supply, error motor connec-
tion, plug, supply line
ENGLISH
Corrective action
Turn on main switch (see
Chap. 7.3)
Connect machine to power
supply (see Chap. 6.5)
Re-establish power supply
Determine cause and acti-
vate circuit breaker
Request service technician
(see Chap. 8.7)
Press and hold both push
buttons at the handle
If the rotating field is coun-
ter-clockwise turn phase
inverter in the plug
Turn phases by phase
inverter in plug
Check power supply, check
motor connection
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