Siemens Flender H2NV Series Assembly And Operating Instructions Manual page 48

Faults
Gear unit is oiled up.
Oil leakage from the gear unit.
Grease escaping at the
output shaft.
Oil foaming in the gear unit.
Oil foams in sump.
Wet­air filter changes colour
from top to bottom.
Increased operating
temperature.
Causes
Inadequate sealing of housing
covers and/or joints.
Inadequate sealing of housing
covers and/or joints.
Radial shaft­sealing rings
defective.
Radial shaft­sealing rings
defective.
Preservation agent not completely
drained.
Gear unit too cold in operation.
Water in oil.
Oil too old
(defoaming agent used up).
Unsuitable oils mixed up.
Water in oil.
Gear unit exposed to cold air from
machine­room ventilator: Water
condensing.
Water in oil.
Oil level in housing too high.
Oil too old.
Oil badly contaminated.
Seriously contaminated oil filter.
Oil pump defective.
On gear units with fan: Suction
opening in air­guide cover and/or
gear­unit housing badly
contaminated.
BA 5060 EN 04/2011
48 / 62
Remedy
Seal joints.
Check and, if necessary, replace
sealings. Seal joints.
Check radial shaft­sealing rings and,
if necessary, replace.
Check radial shaft­sealing rings and,
if necessary, replace.
Oil change.
Shut down gear unit and have oil
degassed. Restart without cooling
water.
Test the oil, change oil if necessary.
Test the oil, change oil if necessary.
Test the oil, change oil if necessary.
Protect gear unit with suitable heat
insulation. Close air outlet or alter its
direction by structural measures.
Contact Customer Service.
- Change oil.
Check oil level and, if necessary,
adjust.
Contact Customer Service.
- Check date of last oil change.
Contact Customer Service.
- Change oil.
Clean the oil filter.
Contact Customer Service.
- Check that oil pump is functioning
correctly.
- Repair or replace oil pump.
Clean air­guide cover and gear­unit
housing.