62 / 64
IOM Manual VF-W_ATEX_gb - Translation of original instructions in Italian - Rev 03_0 - 30/09/16
8 TROUBLESHOOTING
The following information is intended to serve as an aid in locating and eliminating defects and faults. In
some cases, such problems may be caused by the plant or machine to which the gearbox is assembled
and hence, the cause and remedy will be described in the Manufacturer’s technical documentation for the
machine/plant in question.
If any components fail or require replacement as a result of levels of wear likely to compromise the
functioning of the gearbox, contact the Manufacturer’s sales network.
(tab 11)
FAULT
CAUSE
REMEDY
Bearing temperature too high.
Oil level too low.
Top up oil level.
Oil too old.
Change oil.
Bearings faulty.
Contact authorised workshop.
Operating temperature too high.
Oil level too high.
Check oil level.
Oil too old.
Change oil.
Oil contaminated.
Change oil.
Abnormal running noise.
Gears damaged.
Contact authorised workshop.
Excessive axial play in bearings.
Contact authorised workshop.
Bearings faulty or worn.
Contact authorised workshop.
Excessive load applied.
Bring external loads into conformity with
rated values specified in sales catalogue.
Oil contaminated.
Change oil.
Abnormal noise at gearbox
mounting.
Mounting bolts loose.
Tighten bolts to specified torque.
Mounting bolts worn.
Replace mounting bolts.
Oil leaks.
Oil level too high.
Check oil level.
Casing/coupling seals inadequate.
Contact authorised workshop.
Gaskets worn.
Contact authorised workshop.
Gearbox does not run or runs with
difficulty.
Oil viscosity too high.
Change oil (see recommended lubricant
table).
Oil level too high.
Check oil level.
Excessive load applied.
Redesign transmission system to suit
actual load.
Output shaft does not turn with
motor running.
Gears damaged.
Contact authorised workshop.
