Unibor CMD400, Manual

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Troubleshooting

Magnet and motor do not function.

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Damaged or defective wiring.

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Defective fuse.

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Defective control unit.

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Defective power supply.

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Damaged or defective wiring

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Carbon brushes are stuck or worn out

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Defective on / off switch

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Defective control unit

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Defective armature and/or field

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Defective protective reed switch

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Play in the guide

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Bent spindle

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Shaft extending from the motor is bent

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Pilot bent

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Bent spindle

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Shaft extending from the motor is bent

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Triangular guide not mounted straight

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Dirt between spindle and the guide

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Armature Gear ring worn out

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Gear(s) worn out

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No grease in gear box

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Armature damaged

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Field coil burnt

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Carbon brushes worn out

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Damaged or defective wiring

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Damage to armature or field coil

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Damaged or defective brushes

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Guide is set too tight

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Guide is dry

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Guide/Rack/Pinion is dirty or damaged

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Bottom of magnet not clean and dry

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Bottom of magnet not flat

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Work piece is not bare metal

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Work piece is not flat

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Work piece is too thin less than 3.5mm

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Defective control unit

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Defective magnet

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Damaged / defective wiring

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Motor seriously dirty

Magnet does function, the motor does not.

Hole cutters break quickly, holes are 

bigger  than the hole cutter.       

Motor running roughly and/or seizing up.

Motor making a rattling sound.

Motor humming, sparks and motor has no force.

Motor does not start or fails.

Guiding takes a great deal of effort.

Insufficient magnetic force.

Frame under voltage.

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Damaged or defective wiring

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Wrong value fuse

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Defective magnet switch

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Defective control unit

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Damaged or defective wiring

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Wrong value fuse

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Motor running roughly

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Defective armature and / or field

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Carbon brushes worn out

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Defective control unit

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Loose or defective gear-rack

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Defective rotation system

Fuse blows when magnet switch is turned on.

Fuse blows when motor is started up.

Rotation system free stroke too long.