7
APV_VRA_UK-3_032017.indd
Vacuum Valve
DELTA VRA 11
Instruction Manual: UK – rev. 3
APV
UK
12. Service Instructions
The item numbers refer to the spare parts drawing RN 01.113.
12.1 Dismantling from the line system
1.
Shut off line pressure (product and cleaning line).
Do not touch movable parts!
Risk of injury due to sudden valve operation.
2.
Remove pneumatic air for the seat lift actuator (13) at the
connection (14).
3.
Loosen clamp of feedback support and pull off proximity switch (18).
4.
Loosen hexagon nuts (15) by means of a wrench SW 8 and lift the
protective cover (17) with the seat lift actuator and the spray sheet
(22).
5.
Loosen the hexagon screws (3) by means of a wrench SW 13 or 17
and lift the valve insert.
12.2. Dismantling of wear parts
1.
Pull off O-ring (25).
2.
Remove O-ring (23).
3.
Loosen hexagon screw (8) by means of a wrench SW 8 and remove
the disc (7).
4.
Before loosening the hexagon nuts (6) by means of two wrenches
SW 17, the exact distance from the upper edge of the shaft to the
nut must be measured. This distance must be kept exactly during
the installation in order not to change the preset response pressure.
5.
Remove spring plate (5), spring (19) and bush (20).
6.
Push off shaft (2).
7.
Stick into the seat seal (1) with a peaked object and pull it off.
8.
Dismantle guide bands (4).
6
5
20
2
19
distance
4
1
25
8
7
3
14
15
17
18
22
23
13
VRA
