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.
Step 2
Mounting plug seal ring by hand
1. Check the seal ring is premounted as described in step 1.
To ensure correct mounting, press with your thumb on the
seal ring, which must be done approximately 10 times and
always with opposite pressure points, from A to B, to C and
D (see drawing 3).
The rest of the seal ring can now be pressed into the groove
so the whole seal ring is mounted. Check that there are NO
“bulge” (see drawing 4).
If there is a little bulge – then use the screwdriver to eliminate
the bulge.
Again press with the thumb on the seal ring and keep the
pressure while rotating 360° (see drawing 3).
2. 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 and
seal ring (see drawing 5).
Drawing 3
2200-0142
A
D
B
C
Drawing 4
2200-0123
Drawing 5
2200-0122
26
