Connecting The Control Medium; Assembly / Disassembly Of Spare Parts; Disassembly Of Actuator - GEM 550 Installation, Operating, & Maintenance Instructions

Control function
1 (NC)
2 (NO)
3 (DA)
8 (normally open)
+ = available / - = not available
(for connectors 2 / 4 see graphics above)
11.4

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 for the control medium
connectors 2 and 4:
Actuator size
0
1, 2
3, 4, 5
550
Connector 2
Control function 1
Connector 4
Connector 2
Control function 2, 3, 8
Connectors
2 4
+ -
- +
+ +
+ +
Thread
M5
G 1/8
G 1/4
Control function
1 Normally closed (NC)
2 Normally open (NO)
3 Double acting (DA)
Double acting
8
(normally open)
For connectors 2 / 4 see graphics 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".
Assembly tool for disassembling /
assembling the retaining washer / regulating
cone:
Nominal size
DN 15 - 25
DN 32 - 50
DN 65 - 80
Assembly valve (check valve) for
disassembling / assembling the actuator:
Thread
G 1/8
G 1 /4
12.1

Disassembly of actuator

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.
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).
36 / 44
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)
Item number
99014983
99032144
99032145
Item number
99021182
99021181