Oil Change; Shaft Seal; Coupling; Elastomer Elements - Bitzer OSKA9553 Instructions De Service

8.4 Oil change

The listed oils (see chapter Application ranges, page
23) are characterised by a particularly high degree of
stability. With NH operation, it is recommended to
3
change oil once a year or after each 5,000 operating
hours.
Impurities stemming from the plant components or op-
erating outside the application ranges are the only
things that can cause deposits to form in the lubricating
oil, causing it to darken. In this case, change the oil.
Also renew the oil filter. Determine the cause of operat-
ing outside of the application area and eliminate it.
Oil types: see chapter Application ranges, page 23.
WARNING
Oil separator and oil cooler are under pressure!
Serious injuries are possible.
Depressurize oil separator and oil cooler!
Wear safety goggles!
Dispose of waste oil properly!

8.5 Shaft seal

A routine check of the shaft seal is generally not re-
quired.
However, with regard to the operational reliability, a
check in connection with oil change or faults in the lub-
ricating circuit is recommended.
In doing so, pay particular attention to:
• hardening and cracks on the O-rings
• wear
• corrugations
Fig. 3: Checking the elastomer elements of the coupling
32
• material deposits
• oil carbon
• copper plating
Leakage oil quantities up to approx. 0.8 cm
ing hour are within the tolerance range. Leakage oil
which may escape can be drained via an oil drain pipe
at the flange of the shaft seal.
Increased oil leakage is possible during the running-in
period of the shaft seal (approx. 250 hours).

8.6 Coupling

8.6.1
Check the elastomer elements of the coupling after the
running-in period and then once a year, see figure 3,
page 32.
8.6.2
Check the elastomer elements of the coupling for wear
after 3 months for the first time and then every year.
Observe the information in the operating instructions of
the coupling manufacturer!
• Turn both clutch halves without torque against each
other to the stop.
• Mark both halves.
• Turn clutch halves also without torque to the other
direction to the stop.
• Measure radial distance between the two marks.
• Replace all elastomer elements if the distance is
more than 4 mm.
m a x . 4 m m

Elastomer elements

Checking the elastomer elements for wear

3
per operat-
SB-520-2