BA 9137 en 12/2015
7.2.3
Checking procedure
The following visual checks must be conducted and recorded when starting up:
□
Presence of the "Ex" marking.
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Oil level
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Leak tightness of the oil cooling or oil supply lines
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Opening condition of the shut-off valves
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Effectiveness of the shaft seals
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Freedom of the rotating parts from contact
Note
The report must be kept with these instructions.
7.3
Removal from service
•
Switch off the drive unit.
DANGER
Danger to life from switched on system
For carrying out work on the gear unit, the gear unit and the oil supply system must generally be shut
down.
The drive unit must be secured against accidental start-up (e. g. by locking the key switch or removing
the fuses from the power supply).
Attach a notice on the start switch stating clearly that work is in progress on the gear unit.
•
Our recommendation is that during short interruptions the complete oil-supply system be kept
operating. If the unit is taken out of service for longer periods, we recommend keeping the oil-supply
system running for approx. 60 minutes to prevent heat from building up. If there is a sudden stoppage,
e.g. caused by a power failure, however, no damage will result.
•
It should be noted that the high-pressure pumps must be shut down first and then the low-pressure
pumps, when oil-supply systems with a high-pressure lubricating circuit are shut off.
•
During a longer stoppage the shut-off valves in the coolant inlet and outlet lines must be closed.
If a
water-oil cooler is used, the water must be drained off to prevent damage from freezing at
possible sub-zero temperatures.
•
If gear units are operated in a saline environment or in the vicinity of bodies of saline water, the oil-supply
system must be run through its cycle to prevent damage from corrosion. In addition, the gear unit has
to be turned every two weeks (for 15 minutes every week) powered by the auxiliary drive or main motor
(at least one rotation on the output flange).
If this is not possible, item 7.3.1 must be observed.
Note
After taking the gear unit out of service, it will be protected on the interior against corrosion with the
operating oil for 7 days.
