GEM 550 User Manual

Contents
1 General information ............................................. 4
1.1 Information ............................................... 4
1.2 Symbols used ........................................... 4
1.3 Definition of terms .................................... 4
1.4 Warning notes ........................................... 4
2 Safety information ............................................... 5
3 Product description ............................................. 5
3.1 Construction ............................................. 5
3.2 Description ............................................... 5
3.3 Function .................................................... 6
3.4 Control function ........................................ 6
3.5 Flow direction ........................................... 6
3.6 Vent hole in the actuator ........................... 6
3.7 Product label ............................................ 7
4 GEMÜ CONEXO .................................................... 7
5 Correct use .......................................................... 8
6 Order data ........................................................... 9
7 Technical data ..................................................... 11
7.1 Medium .................................................... 11
7.2 Temperature ............................................. 11
7.3 Pressure ................................................... 11
7.4 Product conformity ................................... 16
7.5 Mechanical data ........................................ 18
8 Dimensions .......................................................... 19
8.1 Actuator dimensions ................................. 19
8.2 Installation dimensions ............................. 20
8.3 Body dimensions ...................................... 22
9 Manufacturer's information .................................. 35
9.1 Delivery .................................................... 35
9.2 Packaging ................................................. 35
9.3 Transport .................................................. 35
9.4 Storage ..................................................... 35
10 Installation in piping ............................................ 35
10.1 Use of strainers ........................................ 35
10.2 Preparing for installation .......................... 35
10.3 Installation position .................................. 36
10.4 Installation with clamp connections .......... 36
10.5 Installation with butt weld spigots ............. 36
10.6 Installation with threaded sockets ............. 37
10.7 Installation with threaded spigots ............. 37
10.8 Installation with flanged connection .......... 37
11 Pneumatic connections ....................................... 38
11.1 Use of pilot valves in gas applications ....... 38
12 Commissioning .................................................... 39
13 Operation ............................................................. 39
13.1 Control function 1 ..................................... 39
13.2 Control function 2 ..................................... 39
13.3 Control function 3 ..................................... 39
14 Troubleshooting .................................................. 40
15 Inspection and maintenance ................................ 41
15.1 Components ............................................. 41
15.2 Spare parts ............................................... 41
15.3 Removing the actuator .............................. 42
15.4 Replacing the seals ................................... 42
15.5 Mounting the actuator ............................... 42
16 Removal from piping ............................................ 43
17 Disposal .............................................................. 43
18 Returns ................................................................ 43
19 Declaration of Incorporation according to
2006/42/EC (Machinery Directive) ....................... 44
20 Declaration of conformity according to 2014/68/
EU (Pressure Equipment Directive) ...................... 45
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GEM 550 Specifications

General

Brand	GEM
Model	550
Category	Control Unit
Language	English