Barrier gas
Dilution gas
Gas type
(depends on process)
Dry nitrogen, air or
other suitable gas
Dry nitrogen, air or
other suitable gas
Gas temperature
0 ...+ 60°C
Filtration
£
50
m
m
Maximum
permissible
flow rate
10 SLM
20 SLM
Recommended
flow rate
8-10 SLM
depends on process
Connection of the lines/ pipes
l
Connect the intake lines.
l
Connect the exhaust lines.
l
Make sure that all caps, safeguards and similar covers are
mounted.
Oil filling
The COBRA NS vacuum pumps are always delivered without oil (see
the chapter “Oil types” for information on the recommended oils).
l
Refer to the pump nameplate to identify the correct oil type used
for this pump
l
Only use the oil type specified on the pump nameplate
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) 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 two oil filler caps (OFP).
l
Fill in oil.
l
Make sure that the oil level lies between the MIN and MAX
markings on 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 two oil filler caps hermetically tight.
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 2 minutes.
l
Stop the vacuum pump and wait a few minutes.
l
Make sure that the oil level still lies between the MIN and MAX
markings on the oil sight glasses.
If the oil level is below the MIN marking:
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
The vacuum pump may not be lifted anymore when it has been
filled with oil.
l
Make sure before every transport that the oil has been drained out
of the vacuum pump.
CAUTION
The vacuum pump must remain in a horizontal position when it has
been filled with oil.
Filling in cooling liquid
The COBRA NS vacuum pumps are always delivered without cooling
liquid (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”.
l
Unscrew the filler cap (CLF) on the expansion vessel.
l
Fill in the cooling liquid through the filler opening until the liquid
starts running out of the screw on upper cylinder
l
Stop filling in cooling liquid.
l
Fill in more cooling liquid through the filler opening until the liquid
level is 5 mm inside the expansion vessel (EV).
l
Check the level of the cooling liquid with the measuring scale
located under the filler. The level of the liquid must not lie above
the bottom marking.
Installation and Commissioning
NS 0070-0160 C
Page 10
0870570353 (En)
Ateliers Busch S.A.
Zone Industrielle
CH-2906 Chevenez
Vacuum Pump
NS 0160 C
S/N = C1405009999
p
abs
= 0.03 hPa (mbar)
V
max
= 160 m /h
3
n
max
= ***** min
Oil = Busch YLC 250 B
-1
m = 250 kg
Oil quantity = 1,5 l
Made in
Switzerland
Year 2014
Busch YLC 250 B
(perfluorinated polyether)
CLD
CLF
Cooling liquid filling
Summary of Contents for COBRA NS 0070-0160 C
Page 23: ...Note...
