Electric motor not working
Cause of malfunction | Elimination Method |
1. Damaged wires or oxidized wire connections. | 1. Check and restore connections. Replace damaged wires. |
2. Blown fuse 1 in the fuse box. | 2. Replace the fuse. |
3. Damaged heater switch - voltage is not supplied to the output terminals of the switch. | 3. Check switch, replace if necessary. |
4. Hanging or wear of the motor brushes, a break in the armature winding or contamination of the collector. | 4. Check motor, repair or replace. |
5. Short circuit «mass» armature windings - when the motor is turned on, the fuse burns out. | 5. Replace motor. |
Motor only runs at one speed
Cause of malfunction | Elimination Method |
1. Damaged wires or oxidized wire connections. | 1. Replace damaged wires, clean wire ends. |
2. Damaged heater switch. | 2. Replace the switch. |
3. Burnt out additional resistor. | 3. Replace the resistor. |
Motor armature rotates slowly
Cause of malfunction | Elimination Method |
1. Pollution or oxidation of the collector, wear of the brushes. | 1. Clean the collector, replace the brushes. |
2. Interturn short circuit in the armature winding. | 2. Replace motor. |
3. Jamming of the armature shaft in the bearings. | 3. Disassemble the electric motor, clean the shaft necks. |