Siemens FLENDER PLANUREX 2 PBUC Series Assembly And Operating Instructions Manual page 43

Faults
The oil foams. Water in oil.
Oil too old.
(defoaming agent used up)
Unsuitable oils mixed up.
Water in oil. Oil foams in sump.
Defective oil cooler.
Gear unit exposed to cold air from
machine­room ventilator: Water
condensing.
Increased operating Oil level in housing too high.
temperature.
Oil too old.
Oil badly contaminated.
On gear units with oil­cooling
system: Coolant flow too low.
Coolant temperature too high.
Oil flow through water oil­cooler
too low due to: Badly clogged oil
filter.
Fault in oil­supply
system.
Causes
Test the oil, change oil if necessary.
Test the oil, change oil if necessary.
Test the oil, change oil if necessary.
Check state of oil by the test­tube method for water
contamination.
Have oil analysed by laboratory.
Repair or, if necessary, replace oil cooler. Fill with oil,
look for and repair any leaks.
Protect gear unit with suitable heat insulation. Close
air outlet or alter its direction by structural measures.
Check oil level and, if necessary, adjust.
Check date of last oil change and, if necessary,
change oil. See section 10.
Change oil. See section 10.
Fully open valves in in­ and outflow pipes.
Check for free flow through water oil­cooler.
Check temperature and, if necessary, adjust.
Clean the oil filter. See section 10.
Consult operating instructions for oil­supply system.
BA 9213 en 03/2012
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Remedy