GEM 4242 Operating Instructions Manual page 17

1
1. Pull out the spindle 1.
3. Tighten the operating bush 3 by turning it
clockwise.
7
5. Attach the flange plate 7
– Push in the spindle until it pushes against the spring and then slowly release the pressure on the spring.
▶ For some valves (e.g. GEMÜ 650 and GEMÜ 687) it is necessary to fit a pressure disc between the threaded adapter and
the actuator head. This is included in the required mounting kits, sometimes with an additional O-ring (only GEMÜ 650
with normally open and double-acting control function – code 2+3).
▶ If the pressure disc does not have a groove for a seal, this will already be inserted in the groove provided at the adapter
opening of the actuator head (e.g. GEMÜ 687 with normally open control function – code 2).
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1
4
2
3
2. Align the indentation of the distance piece 4 to the spring and push it over the
spindle 1 using the spring 2 and fix it in place using the operating bush 3.
5
6
4. Affix the O-ring 5 and the adapter 6.
8
6. Screw the flange plate on tight using screws 8 (1 – 1,5 Nm).
NOTICE
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9 Assembly and installation
GEMÜ 4242
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