M&B Engineering WB 255-N Manuel D'instructions page 46

MALFUNCTIONING, CAUSES, TROUBLE-SHOOTING
DISPLAY MALFUNCTIONING
Displays do not The card is not powered up
come on
Err 1 Err 1 appears on power-up
Err 2 During the measuring cycle the Err 2 message appears
Err 3 During the measuring cycle the Err 3 message appears.
Err 4 The motor does not turn (with START pressed) or after about 20
sec. the Err 4 message appears.
Err 5 At end of second calibrating run with the wheel Err 5 appears
on the display.
Err 6 Message Err 6 appears when pressing the START key
Err 7 At end of second calibrating run with the wheel Err 7 appears
on the display
Err 8 At end of second calibrating run with the wheel Err 8 appears
on the display
Err 9 At end of second calibrating run with the wheel Err 9 appears
on the display
Err 10 During launch Err 10 appears on the display
solutions creator
CAUSES
1. External supply off or phase not working.
2. Fuse blown in the electrical plant.
3. Control panel fuse blown.
1. The card has lost the calibration data and factory configuration setting.
2. One or more calibration or setting phases have not been carried out
1. The guard has been raised before completion of measurements.
1. On start-up (using START key or lowering guard) the wheel was rotating
backwards
2. Motor winding inverted.
1. The motor cannot reach the revolutions needed for effective balancing
2. electronic card malfunctioning
3. electrical plant malfunctioning
1. Calibration weight has not been applied on the wheel.
2. The pick-ups have not been connected
1. The guard has not been lowered
2. Guard microswitch broken
1. Phase difference between the 2 pick-ups is too large
1. The left pick-up has not been correctly connected or is defective or the
cable is disconnected.
1. The right pick-up has not been correctly connected or is defective or the
cable is disconnected.
1. Position sensors in optoelectronics defective.
2. The motor will not turn
TROUBLE-SHOOTING
1. Check that positive/negative and neutral are connected up to balancer.
2. Replace fuses in electrical plant (blown fuses indicate fault in electric
plant).
3. Replace fuses on control panel (blown fuses indicate fault in electronic
part).
1. Repeat all calibration and balancer configuration stages.
2. Perform missing programming or setting operations.
1. Wait for end of measuring launch before raising guard.
1. Ascertain that the wheel is still before start-up and in any case avoid
rotating wheel backwards on START.
2. Check for correct motor connection.
1. Check mains voltage (it is probably low).
2. Replace electronic card.
3. Replace electrical part.
1. Repeat calibration from beginning and apply the calibration weight when
instructed in the calibration procedure (also see "Basic Machine Calibra-
tion").
2. Check pick-up connections.
1. Lower guard with wheel mounted.
2. Replace microswitch.
1.
a) check that the calibration weight has been correctly applied;
b) also check machine location; it is probably not stable and is vibrating
excessively;
c) if the problem persists after having stabilised the machine correctly, che-
ck the sensor and electronic card connections (and replace if necessary);
d) replace pick-ups;
e) if after replacing pick-ups the problem is not solved, replace the card.
1. Check left pick-up connection (and replace if necessary).
1. Check right pick-up connection (and replace if necessary).
1.
a) check optoelectronic card connection.
b) check the optoelectronic card is protected from daylight and cover if
necessary;
c) if the defect persists check and if necessary replace the optoelectronic
card.
2. Check electrical part.
ENGLISH
46