9
APV_SI2_UK-6_012019.indd
UK
Safety Valve
DELTA SI2
Instruction manual UK-rev. 6
APV
11. Service Instructions
The item numbers refer to the spare parts list
RN 01.16 - 2
11.1. Dismantling from the line system
1.
Shut off the line pressure in the product - cleaning line and
discharge it if possible.
2.
Remove the pneumatic air line.
3.
Release the clamp screw in the feedback support and pull off
proximity switches.
4.
Remove the flange screws (9).
5.
If the housing cover (8) is stuck, put a screwdriver into the groove
and slowly push the insert out.
11.2. Dismantling of internal parts
1.
Remove the housing seal (7) from the housing cover (8).
2.
Release the hexagon screws (37) and the washers (36) at the guide
(6) and take out the complete valve seat.
3.
Separate the guide (6) from the seat (2).
4.
Separate the cap (4) from the seat (2).
5.
Seal rings (5, 35) and seat seal (3) are freely accessible.
6.
Pull the housing cover (8) from the shaft rod and remove the guide
strap (26) and the sliding ring (34).
Valve with seat lift actuator
- Release the screws (25) and lift off the cover (20).
- Unscrew the ring (19) and lift off the seat lift actuator (12).
- Press down the cover (16) and take out the retaining ring (17).
- Remove the pressure spring (28).
- Take the piston (13) out of the cylinder.
- Seal rings (15, 29) are freely accessible.
Delta SI2-
H
with manual seat lifting
Delta SI2-
A
with seat lift cylinder
feedback
support
13
3
5
8 9
7
35
34
26
2
4
6
37,36
25
15
12
16 17
28
29
19
20
