Operation - GEM 674 Installation, Operating And Maintenance Instructions

Installation - Flange connection
(GEMÜ 675):
1. Pay attention to clean, undamaged
sealing surfaces on the mating flanges.
2. Align flanges carefully before installing
them.
3. Centre the seals accurately.
4. Connect the valve flange and the piping
flange using appropriate sealing material
and matching bolting. Sealing material
and bolts are not included in the scope
of delivery.
5. Use all flange holes.
6. Only use connector elements made of
approved materials!
7. Tighten the bolts diagonally!
Observe appropriate regulations for
connections!
After the installation:
Reactivate all safety and protective
G
devices.

11.2 Operation

Optical position indicator GEMÜ 674
Valve open
Optical position indicator GEMÜ 675
Valve open
Valve closed
Valve closed
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CAUTION
Handwheel can become hot
during operation!
® Risk of burns!
Ensure protective gloves
G
are worn when operating
handwheel.
CAUTION
GEMÜ 674: Rising handwheel!
® Danger of crushing fingers.
GEMÜ 675:
A lockable handwheel is available as an
option. It can be secured with a padlock
(see chapter 7.2 "Order data GEMÜ 675" /
Control function).
674, 675