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BA 9213 en 03/2012
7.4 Removal from service
• Switch off drive unit.
Secure the drive unit to prevent it from being started up unintentionally.
Attach a warning notice to the start switch.
• With gear units fitted with water oilcoolers, close the stop valves on the water in and outflow pipes.
To prevent freezing, drain the water from the cooling coil or the water oilcooler.
• Start the gear unit and allow it to run briefly (5 to 10 minutes) approx. every 3 weeks (during a shutdown
period no longer than 6 months).
• Treat the gear unit with preservation, see items 7.4.1 and 7.4.2 (before a shutdown period exceeding
6 months).
7.4.1 Interior preservation during longer disuse
Depending on the type of lubrication and/or shaft sealing, the following types of interior preservative agent
can be used.
7.4.1.1 Interior preservation with gear oil
Gear units with splash lubrication systems and contacting shaft seals can be filled with the correct type of
oil up to a point just below the air filter or breather screw.
7.4.1.2 Interior preservation with preservative agent
Before longer shutdown periods gear units with pressure lubrication systems, oil circulation cooling
and/or noncontacting shaft seals should be filled with preservative agent and run without load.
7.4.1.3 Interiorpreservation procedure
• Stop the gear unit.
• Drain oil into a suitable container (see section 10, "Maintenance and Repair").
• Unscrew the air filter including the reducing screw or breather screw.
• Pour in the preservative agent through the hole of the reducing screw up to the top mark on the oilsight
glass.
For preservative agent see table 3 or 4 in item 4.4.1!
• Screw in the air filter including the reducing screw or breather screw again.
• Start the gear unit and allow it to idle briefly.
• Unscrew the oil drain plug.
• Drain preservative agent into a suitable container.
• Dispose of preservative agent in accordance with regulations.
There is a risk of scalding from the hot preservative agent draining from the gear unit.
Wear protective gloves!
• Screw in the oil drain plug.
• Replace air filter or breather screw with screw plug.
Before restarting the gear unit replace the screw plug with the breather screw or the
air filter. Observe the instructions in item 7.1.1.
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