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GEMÜ R480 Victoria
5 4
13. Slightly tighten the bolts
4
and nuts
5
diagonally.
14. Fully open the disc and check the alignment of the piping.
15. Tighten the nuts
5
diagonally until the flanges fit tightly on
the body.
Observe the permissible tightening torque of the bolts
(see "Mechanical data").
10.4 Installation of the ATEX version
1. Install the butterfly valve, see chapter "Installation of the
standard version".
2. Connect the earthing cable of the butterfly valve to the
earth terminal of the plant.
3. Test the resistance between the earthing cable and actu-
ator shaft (value <106 Ω, typical value <5 Ω).
11 Commissioning
WARNING
Corrosive chemicals!
▶
Risk of caustic burns.
●
Wear suitable protective gear.
●
Completely drain the plant.
CAUTION
Leakage
▶
Emission of dangerous materials.
●
Provide precautionary measures against exceeding the
maximum permitted pressures caused by pressure
surges (water hammer).
CAUTION
Use as end-of-line valve!
▶
Damage to the GEMÜ product.
●
When using the GEMÜ product as an
end-of-line valve, a mating flange must
be fitted.
CAUTION
Cleaning agent
▶
Damage to the GEMÜ product.
●
The plant operator is responsible for selecting the clean-
ing material and performing the procedure.
1. Check the tightness and the function of the product (close
and reopen the product).
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.
4. Commissioning of actuators in accordance with the en-
closed instructions.
12 Operation
The product is operated via manual, pneumatic or motorized
actuators.
12 Operation
