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15 Commissioning
14.2 Setting the damping piece
Undone grub screw.
▶ The grub screw and damping piece b may fall into the
valve.
▶ Damage to the actuator.
Only undo grub screw e for the adjustment process.
●
Do not pull out the Allen key during the adjustment pro-
●
cess.
Do not turn the actuator further than the horizontal or
●
shake it when grub screw e is undone and damping piece
b is loose.
1. Remove threaded plug a from the actuator using a flat-
head screwdriver.
2. Undo grub screw e by 1–1.5 turns using an Allen key (WAF
2).
ð CAUTION! Do not unscrew grub screw e any more.
Otherwise it might fall inside the valve.
3. After undoing grub screw e, damping piece b on the valve
spindle can be moved to the correct position.
b
4. Fix the position of damping piece b with grub screw e.
5. Screw threaded plug a back in.
GEMÜ 650TL
CAUTION
a
e
15 Commissioning
1. Check the tightness and the function of the product (close
and reopen the product). Due to the setting behavior of
elastomers, the bolts may need to be retightened follow-
ing the installation and commissioning of the valve.
2. Flush the piping system of new plant and following repair
work (the product must be fully open).
ð Harmful foreign matter has been removed.
ð The product is ready for use.
3. Commission the product.
16 Operation
Operate (see "Pneumatic connection", page 28) the product in
accordance with the control function.
16.1 Control function 1
In its resting position, the product is closed by spring force.
1. Activate the actuator via control medium connector 2.
ð The product opens.
2. Vent the actuator via control medium connector 2.
ð The product closes.
32 / 42
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