Installation Of The Atex Version; Gemü 9428 Electrical Connection - GEM R488 Victoria Operating Instructions Manual

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").

11.4 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).
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12 GEMÜ 9428 electrical connection
Required for electrical connection:
Allen key size SW3
●
Small flat screw driver
●
135 / 172
12 GEMÜ 9428 electrical connection
DANGER
Risk of electric shock!
▶ Risk of injury or death (if operating
voltage is higher than safe extra low
voltage).
▶ Adjustments are made with the actu-
ator cover removed.
▶ Electric shock can cause severe burns
and fatal injury.
Always disconnect the product from
●
power supply!
Therefore, have all work performed
●
only by qualified electricians.
CAUTION
Power supply!
Power supply varies dependent on the
●
design (see product label).
Do not bridge terminals!
●
For parallel connection of several actu-
●
ators, use the version with K-no. 6410.
With version AE (additional potential-
●
free limit switches), the plug connec-
tions must not be interchanged with
the power supply.
NOTICE
GEMÜ R488 Victoria