Connecting The Control Medium; Assembly / Disassembly Of Spare Parts; Disassembly Of Actuator; Replacement Of Seals - GEM 534 Installation, Operating And Maintenance Instruction

Control function
1 (NC)
2 (NO)
3 (DA)
8 (normally open)
+ = available / - = not available
(for connectors 2 / 4 see pictures above)
11.3 Connecting the control
medium
Important:
Connect the control medium lines
tension-free and without any bends
or knots!
Use appropriate connectors
according to the application.
Thread size of the control medium
connectors 2 and 4: G1/4
Connector 2
Control function 1
Connector 4
Connector 2
Control functions
2, 3, 8
Connectors
2 4
+ -
- +
+ +
+ +
31 / 44
Control function
1 Normally closed (NC)
2 Normally open (NO)
3 Double acting (DA)
Double acting
8
(normally open)
For connectors 2 / 4 see pictures on the left
12 Assembly / disassembly of
spare parts
See also chapter 11.1 "Installing the valve"
and chapter 20 "Sectional drawing and
spare parts".
12.1

Disassembly of actuator

Important:
After disassembly, clean all parts
of contamination (do not damage
parts). Check parts for potential
damage, replace if necessary (only
use genuine parts from GEMÜ).
12.1.1 DN 15 - 50
1. Move actuator A to the open position.
2. Loosen union nut a.
3. Remove actuator A from valve body 1.
4. Disconnect actuator A from control medium
lines.
12.1.2 DN 65 - 100
1. Move the actuator A to the open position.
2. Undo the hexagon nut 6.
3. Remove the actuator A and seat flange 29
from the valve body 1.
4. Disconnect the actuator A from control
medium lines.
5. Remove gasket 30.
12.2

Replacement of seals

12.2.1 DN 15 - 50
Important:
Replace gasket 4 during every
actuator disassembly / assembly.
Connectors
2: Control medium (open)
4: Control medium (close)
2: Control medium (open)
4: Control medium (close)
2: Control medium (open)
4: Control medium (close)
534