GA 02.200/8.02 - 10/02
Maintenance
14
3.2 Checking the Condition
of the Oil and the Oil
Level
The oil level of the pump in operation must always be
between the bottom edge and the middle of the oil-level
glass (7/3).
When necessary, shut down the pump and add oil (7/6).
The pump's oil consumption rises in the case of a high
gas throughput or operation with open gas ballast valve.
During normal operating conditions, the oil level in the
gear housing does not change. To check the oil level,
shut down the pump. Drain the oil into a measuring bea-
ker (7/16), check the quantity and pour it back in (7/14).
If an increase in the oil consumption is determined you
should inform the Leybold Service.
Condition of oil N 62
Normally the oil is clear and transparent. If the oil dar-
kens, it should be changed.
If gases or liquids dissolved in the oil deteriorate the ulti-
mate pressure, the oil may be degassed by letting the
pump run for approx. 30 min. with closed inlet port and
open gas ballast valve.
When an oil sample is needed so as to determine
whether an oil change is required, oil should be dischar-
ged via the oil-drain plug (7/1) into a beaker or similar
vessel with the pump switched off but still warm.
Key to Fig. 7
1 Oil-drain plug screw, pumping chamber
2 Gas ballast activator
3 Oil-level glass
4 Eyebolts for lifting
5 Exhaust box
6 Oil-fill plug screw, pumping chamber
7 Sealing disk
8 Collar flange: E 250, DK 200
9 Clamping ring
10 Exhaust port
11 Collar flange
12 Snap ring
13 Dirt trap
14 Oil-fill plug screw, gear
15 Three-phase motor
16 Oil-drain plug screw, gear
17 Inlet port
Fig. 7 Controls and connections
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