8
APV_VRA_UK-3_032017.indd
Vacuum Valve
DELTA VRA 11
Instruction Manual: UK – rev. 3
APV
UK
12. Service Instructions
12.3. Installation of seals and assembly of valve
1.
Press the guide bands (4) into the yoke.
2.
Before assembly of the valve shaft (2), the seat seal (1) must be
inserted.
Press the slightly greased seal at four spots, the wide
side to the front, into the groove. At the four loops sticking out,
the seal must be inserted into the groove, e.g. by means of a thin
blunt screwdriver and strongly pressed into the groove by thumb.
To ensure a uniform fit, the four loops are to be worked upon
alternatively. Finally, the seal is smoothed by exerting strong
pressure, e.g. by the handle of a screwdriver. The groove
is vented by sticking between the groove edge and the seal inside
down to the groove base by means of a thin blade. The correct
fit of the seal must be checked after the installation.
3.
Push the shaft (2) through the yoke (21).
4.
Insert spring (19), bush (20) and spring plate (5).
5.
Screw on hexagon nuts (8) and tighten them against one another.
6.
Observe distance of installation (see 12.2.4).
7.
Fix the disc (7) with the hexagon screw (8) at the shaft.
8.
Place the spray sheet (22) and protective cover (17) together with
the seat lift actuator (13) on the spacer (16) and tighten the parts by
the discs (12) and hexagon nuts (15).
9.
Insert O-ring (23) in the outlet (24) and the O-ring (25) in the yoke
groove.
12.4. Installation of valve
1.
Place the complete valve insert into the valve housing (26) and
tighten it by the screws (3).
2.
Install the pneumatic air line and the valve feedback.
8
6
7
5
16
3
24
15
17
22
20
21
2
25
23
26
19
13