ED. 2009/11
Assembly and disassembly
21
Proceed with caution. There is danger of personal injury.
Always disconnect the compressed air before starting valve disassembly.
Never disassemble the valve clamps directly without reading the instructions thoroughly.
Assembly and disassembly of the valves / actuator must only be carried out by qualified staff.
7.7.
DISASSEMBLY / ASSEMBLY OF THE ACTUATOR.
Disassembly
1.
Loosen the 4 screws (32) and remove
the cap (39).
2.
Place the actuator on the base of the
press or in the lathe clamp. A thick tube
and a shim must be used at the free end
of the actuator.
3.
Apply force to the shim. Once the cap
(12) has lowered 15-20mm, remove the
retention ring (45).
4.
Reduce the force on the shim slowly,
until the upper cap is free (note that the
spring is no longer applying pressure).
5.
Remove the cap (12) and the internal
components, spring assembly (06),
piston (30).
6.
Remove the gaskets (20 and 20B) from
the piston (30).
7.
Remove the scraper (60), gasket (20B)
and the guide (11) from the actuator
base (12A) and the upper cap (12).
Assembly
1.
Assemble the scraper (60), gasket (20B)
and the guide (11) on the actuator base
(12A) and the upper cap (12).
2.
Place the gaskets (20 and 20B) on the
piston (30).
3.
Place the piston (30) and the spring
assembly (06) in the cylinder (01).
4.
Fit the upper cap (12) on the cylinder.
5.
Apply force to the shim to lower it 15-
20mm. Place the retention ring (45)
6.
Place the cap (39) and screw in the 4
screws (32).
7.
We apply compressed air to verify the
correct operation of the actuator.
8.
If the user needs an NO (normally open)
valve, we will turn the actuator 180
o
.
The following tools are required to disassemble the valve.
•
5mm (DN-25/40), 6mm (DN-50/80), and 10mm (ND-100) Allen keys.
•
Screwdriver (to remove the retention ring).
•
Press or lathe (to compress the spring and open the actuator).
prensa, torno,..
tubo grueso
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