Service and maintenance
8.6 Checking the gearbox for leaks
BA 2030
Operating Instructions, 02/2021, A5E37880173A/RS-AM
97
8.6
Checking the gearbox for leaks
Gearbox and geared motor in an ATEX design
Shaft sealing rings are subject to natural wear. The service life depends on the
operating conditions.
Include the shaft sealing rings in periodic maintenance and servicing work on the
system.
Note
From the inherent principle of operation, oil mist can escape from the vent valve or a
labyrinth seal.
Oil or grease escaping in small quantities from the shaft sealing ring should be regarded as
normal during the running-in phase of 24 hours operating time.
If the quantities escaping are significant or leaking continues after the running-in phase, the
shaft sealing ring must be replaced to prevent consequential damage.
Table 8- 10 Description and measures
Status
Description
Measures
Notes
Film of moisture
on the shaft
sealing ring
Film of moisture as a
result of the inherent
principle of operation
(apparent leakage)
Remove using a clean
cloth and continue to
observe.
This does not represent a
fault; frequently, in the
course of operation, the
sealing ring dries off.
Leakage at the
shaft sealing ring
Identifiable small
trickle, formation of
drops, also after the
running-in phase
Replace the sealing
ring, determine the
possible cause of the
sealing ring failure and
rectify.
During the run-in period, the
shaft sealing ring beds into
the shaft. A visible track can
be seen on the shaft.
Optimum preconditions for a
perfect seal are obtained
after the run-in period.
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