5.
Abnormal sound
comes out.
7.
Oil leakage from the
machine
1. Ball-bearings are worn out.
2. Impeller touches with the
bonnet.
3. Gears are broken.
4. No oil left in the gearbox.
5. Short phase in power supply.
6. Machine operates
overcapacity.
7. The brake in electro
magnetic machines does not
open or the broken lining of
brake touches.
1. The air ventilation plug of
gearbox is not installed.
2. The packing O-ring of motor
leaks
3. The fixing bolts of the
gearbox are loose.
14
1. Check the ball-bearings
2. Check the impeller bonnets.
3. Check the gears
4. Check the gearbox oil.
5. Check the phases
6. Check the material in
accordance with the dimensions
on the nameplate.
7. Check the brake and linings if
they operate properly.
1. Check if the plug is screwed.
2. Check the motor from the
impeller side. Replace the
packing O-ring if it leaks.
3. Check and tighten all fixing
bolts.