Servicing
Vacuum Pump System SC/SEM/SH/SR950
44
Translation of original Operating Instructions, English, KNF 125549-125552 07/18
9. Servicing
9.1. Servicing schedule
Component
Servicing interval
Vacuum pump
system
Regular inspection for external damage or
leaks
Diaphragms and
valve plates
Replace when pumping capacity
decreases, or sooner
Tab. 6
9.2. Cleaning
When cleaning, make sure that no liquids enter the inside of
the housing.
9.2.1. Flushing vacuum pump system
WARNING
Avoid damage to the vacuum system and personal
injury caused by poisoning or explosion
When flushing the vacuum pump system with
inert gas, make sure that the gas ballast valve is
closed so no reactive or explosive mixtures can
form.
Before switching off the vacuum pump system, separate it from
the vacuum chamber and flush it with air (if necessary for
safety reasons: with an inert gas) under atmospheric
conditions (ambient pressure) for about five minutes.
Only SC/SEM 950:
If inert gas is used: connect the inert gas feed to the gas inlet
(Fig. 2/
18
15
, p. 17) of the vacuum pump
system and close the gas ballast valve. Observe the safety
instructions in chapter 3.
9.2.2. Cleaning vacuum pump system
Only clean vacuum pump system with a damp cloth and non-
flammable cleaning agents.
9.2.3. Emptying collection flask on the suction and pressure
sides
Suction side
1. Grasp the collection flask (Fig. 2/
9
7
, p. 17,
7
6
, p. 21) and simultaneously remove
attachment clamp
7
(or
5
,
5
and
4
); pull out collection flask.
2. Dispose of contents in collection flask according to local
regulations. Then rinse out collection flask.
3. Reattach collection flask.
Содержание SC 950
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