KNF LAB LABOPORT SH820G Manual Del Usuario página 130

Servicing
21 Sliding
washer
22 Sleeve
X O-ring (15,
16, 17)
54
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. 17).
Fig.17: Correct position of O-ring
5. Screw the two hose connections (11) and (12) back into
the head covers.
6. Align the hose connections accordingly Fig. 18 and then
tighten the union screws of the hose connections (11) and
(12) firmly.
To ensure the tightness of the hose connections, the
union nuts of the hose connections must be tightened all
the way.
If necessary, use a size 14 open-end wrench to tighten
the union screws.
Translation of Originial Operating Instruction, KNF 325562-325564 06/21
Vacuum system SH820G / SR820G SH840G / SR840G
21
X 22