Maitenance Of Seat Lift Actuator / Main Cylinder - SPX FLOW APV DELTA DA3+ Instruction Manual

APV
APV_DA3+_ATEX_UK-0_022018.indd
The spring cylinder (8) is
preloaded by spring force.
Opening of the spring cylinders
is strictly forbidden.
Danger to life!
Double seat valve
DELTA DA3+ - ATEX
Instruction manual: UK - rev. 0
13. Service Instructions
18
13.3. Maintenance of main cylinder
The actuator (seat lift cylinder (10), main cylinder (9) and spring
19
cylinder (8) must be dismantled from the valve insert as described
in 13.2. 1.-8.
20
- Remove the hex. screws (19).
10
Lift the seat lift cylinder with main cylinder from the spring cylinder.
21
13.3.1. Dismantling of seals and disassembly of the seat lift
22
and main cylinder
23
1. Lift the seat lift cylinder (10) from the main cylinder (9). Push the
24
piston rod (20) out of the seat lift cylinder..
2. Remove the piston seal (23), quadrings (18, 22), guide band (21)
25
and o-ring (25).
22
3. Clean the seat lift cylinder and the piston rod.
22
4. Press the piston of the main cylinder (26) with cover (27) out of the
26
main cylinder. Slide the cover from the piston.
9
5. Remove the quadrings (22), o-ring (25) and piston seal (23).
22
6. Clean the main cylinder, cover and piston.
25
13.3.2. Installation of seals and assembly of the seat lift
and main cylinder
27
1. Slightly grease all seals.
Attention!
8
Use appropriate pneumatic grease.
Recommendation for the actuator (main cylinder):
APV pneumatic grease: (25 ml tube - ref.-No. 000-70-01-008/93)
2. Insert the seals into their corresponding grooves.
3. Insert the piston rod (20) in the seat lift actuator.
4. Slide the piston of the main cylinder (26) into the main cylinder until
it stops.
5. Slide the cover (27) over the piston (26). Press the cover into the
main cylinder.
6. Place the seat lift cylinder on the main cylinder: The cylindrical
dowel pin (24) must engage in the bore of the housing of the main
cylinder.
7. Place the main cylinder with the seat lift cylinder on the spring
cylinder (8).
8. Insert the hexagon screws (19) and tighten them crosswise.
See to all seals and bearing surfaces in the seat
lift cylinder and main cylinder being greased
sufficiently!
(see lubrication chart: RN ATEX 053.73, page 12)
UK
22