l
Make sure that the seals of the drain plugs are not damaged and
that they sit properly. Replace them if necessary.
l
Screw on the drain plugs again
l
Dispose of the used oil according to applicable environmental pro-
tection regulations
Checking the cooling liquid
Checking the level of the cooling liquid
l
Make sure that the vacuum system has been switched off and that
it cannot be switched on again accidentally
l
Check the level of the cooling liquid in the cylinder upper plate
u
Unscrew and remove the purge cap (CLV1) on cylinder upper
plate
u
Cooling liquid must be just at the level of the purge cap (space
in the expansion vessel).
l
Check the level of the cooling liquid in the cylinder endplate B-side
(opposite side of the motor)
u
Unscrew, but do not remove completely the purge cap (CLV2)
u
The level is OK only if the cooling liquid try to flow out.
WARNING
Be carefull, the cooling liquid quantity which could flow, could be
important.
If the level is below:
u
Top up with cooling liquid (see "Refilling cooling liquid")
Filling in new cooling liquid
l
Prepare the quantity of cooling liquid needed (see "Cooling liquid
type/ quantity")
NOTE
: The quantity of cooling liquid specified in the installation hand-
book is of informative nature only.
l
Make sure that the drain plugs have been fitted properly and that
they do not leak
l
Unscrew purge cap (CLV 1) on cylinder upper plate
l
Check the level of the cooling liquid: if the cooling liquid level is at
the purge cap on cylinder upper plate, do not unscrew the purge
cap on cylinder endplate B-side as the cooling liquid will flow out-
side, otherwise follow the procedure
l
Unscrew purge cap (CLV 2) on cylinder endplate B-side
l
Unscrew the filler cap for the cooling liquid
l
Fill in again by filler hole until cooling liquid arrives at the level of
the purge cap of cylinder endplate B-side
l
Stop fill in
l
Close the purge cap on cylinder upper plate
l
Make sure that the seals of the filler cap are not damaged and that
they sit properly. Replace if necessary.
l
Screw on the filler plug again
l
Wipe cooling liquid that may have run on outside surfaces of
vacuum system
Refilling cooling liquid
Cooling liquid does not normally have to be refilled outside the recom-
mended cooling liquid change intervals.
l
Make sure that the vacuum system has been switched off and that
it cannot be switched on again accidentally
l
Unscrew the filler cap (CLF) for the cooling liquid
l
Check the level of the cooling liquid: if the cooling liquid level is at
the purge cap on cylinder upper plate, do not unscrew the purge
cap on cylinder endplate B-side as the cooling liquid will flow out-
side otherwise follow the procedure
l
Open purge cap (CLV1) on cylinder upper plate and purge cap
(CLV2) 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 fill in
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 cooling liquid filler cap again
l
If liquid has run on to the outside surfaces of the vacuum system,
wipe it off
Draining the cooling liquid
l
Make sure that the vacuum system has been switched off and that
it cannot be switched on again accidentally
l
Make sure that the vacuum system has been adjusted to atmo-
spheric pressure
l
Place a container under the drain plug (CLD) for the cooling liquid
l
Unscrew drain plug of cooling liquid
l
Unscrew filling cap on cylinder upper plate
l
Unscrew purge cap on cylinder endplate B-side
When cooling liquid stops running out:
l
Screw purge caps
l
Close the drain plug for the cooling liquid
l
Make sure that the seals of the filler cap are not damaged and that
they sit properly. Replace if necessary.
l
Dispose of the used cooling liquid according to applicable environ-
mental protection regulations
Checking the cooling water
Checking the cooling water flow
l
Checking the cooling water flow regularly
If the flow drops, check for leaks
u
Make sure that the specifications of the cooling water are
followed
Checking the nitrogen
Checking the nitrogen flow
l
Checking the nitrogen flow regularly (only when DP runs)
If the flow drops, check for leaks
u
Make sure that the specifications of the nitrogen are followed
Checking the current consumption
u
Check the current intensity of the motors of the DP and MB
vacuum pumps
An increased intensity is an indication for a fault
Checking the sound silencer (accessory)
l
Make sure that the condensate does not collect at the exhaust of
the vacuum system
l
Drain the condensate at the drain opening and collect it in a con-
tainer
l
Dispose of the condensate according to applicable environmental
protection regulations
l
Check the sound absorber regularly and clean it if necessary
COBRA DS 8163 A
Checking the oil
0870772605
Page 29
Содержание COBRA DS 8163 A
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