ALFA LAVAL UNIQUE SSV STANDARD VALVE INSTRUCTION MANUAL—REV 3/19
5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly.
NC = Normally closed.
NO = Normally open.
A/A = Air/air activated.
B
B P
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meerr
Drawing 1
It is important to place the screwdriver
underneath the plug.
2200-0122
Drawing 2
1. Remove old seal ring using a knife, screwdriver or similar.
Be careful not to damage the plug surface.
If using a screwdriver it must be placed underneath the plug groove
(see drawing 1).
2. Grease the new seal ring with Paralique GTE 703, which is included in
the service kit.
Only use a very small amount of grease.
3. Fit the seal ring on the plug without pressing it into the groove.
Be careful not to twist the seal ring.
Use a screwdriver (two turns) to fit the seal ring properly and to ensure
it is not twisted (see drawing 2).
4. The seal ring can now be mounted by hand.
5. To ensure correct mounting press with your thumb on the seal ring
which must be done approx. 10 times and always with opposite
pressure points, from A and B, to C and D (see drawing 3).
The rest of the seal ring can now be pressed into the groove so all the
seal ring is mounted. Check that there are NO “bulge” (see drawings).
If there it is a little dent – then use the screwdriver to exhaust the bulge.
Again press with the thumb on the seal ring and and keep the pressure
while rotating 360° (see drawing 4).
6. It is important to release compressed air behind the seal ring .
This is done with a screwdriver and always underneath the plug as
shown.
It must be done at one or two different points on the circumference.
Be careful not to make marks on the surface of the plug seal ring (see
drawing 5).
2200-0094
Drawing 3
2200-0142
A
D
B
C
Drawing 5
Drawing 4
2200-0122
2200-0123
Bulge
26
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