Servicing
11 AS hose
connection
12 HLK hose
connection
15 O-ring
16 O-ring
17 O-ring
18 O-ring
19 O-ring
20 AS hose
connector
66
Change O-rings on the hose connections
1. Loosen the two union screws on the hose connections
(11) and (12) and pull the hose connections out of the
head plates (3).
If necessary, use a size 14 open-end wrench to loosen
the union screws.
11
20
Fig.17: Changing O-rings
2. Change the O-rings (16) and (17) on the separator hose
connection (11).
3. For SR820G and SR840G:
Carry out step 2 also for the second separator hose con-
nection (11) on the outlet side.
4. For SH820G and SH840G:
Change the O-ring (15) on the high-performance con-
denser hose connection (12).
When changing the O-rings, make sure that the new O-
rings are positioned correctly (between sleeve (22) and
sliding washer (21); see Fig. 18).
Translation of Originial Operating Instruction, KNF 325562-325564 02/23
Vacuum system SH820G / SR820G / SH840G / SR840G
3
15
16
17
19 18
12