WZ (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) 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
l
Make sure that the oil level lies in the target circle of the oil sight
glasses
Oil level, pump not operating
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
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.
COBRA DS vacuum pump
l
Start the vacuum pump
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 pump run for a few minutes
l
Stop the vacuum pump and wait a few minutes
COBRA NS (DP) 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
WZ (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 into the two vacuum pumps
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 pump at the time of rise does not
exceed 5° compared to the horizontal. In the event of too important
slope (> 5°), risk of oil leakage in the workspace.
l
Before each transport requiring a means of adapted lifting, control
the slope of the vacuum pump (< 5°).
CAUTION
The vacuum pump must remain in a horizontal position when it has
been filled with oil.
Filling in cooling liquid
The COBRA DS vacuum pumps are generally dispatched with cooling
liquid already in the vacuum pump. Before vacuum pump first startup,
control the cooling liquid level. In the event of absence of this lubri-
cant, please carry out the filling (see the chapter “Cooling liquid
types” for information on the recommended cooling liquids).
l
Prepare the quantity of cooling liquid specified in the table
“Cooling liquid quantity”
NOTE
: The quantity of cooling liquid specified in the installation hand-
book is of informative nature only. Respect the procedure of filling the
cooling liquid.
l
Unscrew filler cap (CLF) of cooling liquid on cylinder upper plate
l
Open purge cap (CLV) on cylinder upper plate and purge cap
(CLV) on cylinder endplate B-side
l
Fill in by filler hole until cooling liquid flows by purge cap on
cylinder endplate B-side
l
Stop filling in cooling liquid
l
Close the purge cap on cylinder endplate B-side
l
Fill in again by filler hole until cooling liquid flows by purge cap of
cylinder upper plate
l
Close the purge cap of cylinder upper plate
l
Screw on the filler cap for the cooling liquid again
l
If liquid has run on to the outside surfaces of the vacuum pump,
wipe it off
l
Start the vacuum pump
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 pump run for a few minutes
l
Stop the vacuum pump and wait a few minutes
l
Unscrew purge cap on cylinder upper plate
l
Control that cooling liquid level is just under cylinder upper plate
In case cooling liquid level is below required level:
u
Fill in more cooling liquid
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:
l
Remove the rubber plate from the intake flange and connect the
intake line to the intake flange
Installation and start-up
DS 3010 E
Page 14
0870771509 (En)
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