Oil filling
The COBRA DS vacuum systems are generally dispatched without oil
in the vacuum system (It depends on the way of shipping). Before
vacuum system first startup, control the oil level. In the event of
absence of this lubricant, please carry out the filling (see the chapter
“Oil types” for information on the recommended oils).
COBRA NS (DP) vacuum pump
l
Prepare the quantity of oil specified in the table “Oil quantity”
NOTE
: The quantity of oil specified in the installation handbook is of
informative nature only. Check the oil level with the help of the various
oil sight glasses (OSG 1, OSG 2) on the vacuum pump.
CAUTION
Before you change the type of oil, make sure that the new type is
compatible with the old type. If necessary, flush the vacuum pump.
l
Unscrew the oil filler cap (OFP)
l
Fill in oil
Oil level, pump not operating
l
Make sure that the oil level is in the target circle of the oil sight
glasses (OSG 1 and OSG 2)
l
Make sure that the seals of the oil filler cap are not damaged.
Replace them if necessary
l
Screw on the oil filler cap hermetically tight
WY (MB) rotary lobes vacuum pump
l
Prepare the quantity of oil specified in the table “Oil quantity”
NOTE
: The quantity of oil specified in the installation handbook is of
informative nature only. Check the oil level with the help of the various
oil sight glasses (OSG 3, OSG 4, OSG 5) on the vacuum pump.
CAUTION
Before you change the type of oil, make sure that the new type is
compatible with the old type. If necessary, flush the vacuum pump.
l
Unscrew the oil filler cap (OFP)
l
Fill in oil
Oil level, pump not operating
l
Make sure that the oil level lies in the target circle of the oil sight
glasses
l
Make sure that the seals of the oil filler cap are not damaged.
Replace them if necessary
l
Screw on the oil filler cap hermetically tight
COBRA DS vacuum system
NOTE
: It is easier to switch on the vacuum pump with cold oil when
the intake line is not closed or when the intake flange is not covered by
a rubber plate.
l
Start the vacuum system
If the intake line is equipped with a shut-off device:
u
Close the shut-off device
If the intake line is not equipped with a shut-off device:
u
Place a rubber plate on the intake flange
l
Let the vacuum system run for a few minutes
l
Stop the vacuum system and wait a few minutes
COBRA NS (DP) vacuum pump
l
Make sure that the oil level still lies in the target circle of of the oil
sight glasses
If the oil level is below the target circle:
u
Fill in more oil
If the intake line is equipped with a shut-off device:
u
Open the shut-off device
If the intake line is not equipped with a shut-off device:
u
Remove the rubber plate from the intake flange and connect
the intake line to the intake flange
WY (MB) rotary lobes vacuum pump
l
Make sure that the oil level still lies in the target circle of the oil
sight glasses
If the oil level is below the target circle:
u
Fill in more oil
If the intake line is equipped with a shut-off device:
u
Open the shut-off device
If the intake line is not equipped with a shut-off device:
u
Remove the rubber plate from the intake flange and connect
the intake line to the intake flange
CAUTION
In the case of a vacuum pump filled with oil, you ensure that the
angle of inclination of the vacuum system at the time of rise does
not exceed 5° compared to the horizontal. In the event of too im-
portant slope (> 5°), risk of oil leakage in the workspace.
Installation and start-up
COBRA DS 8163 A
Page 20
0870772605
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Summary of Contents for COBRA DS 8163 A
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