Dungs FRM-NOC 100025 HD, Instruction Manual, Page: 5 / 76

4 … 76
MC • Edition 2022.08 • No
. 279 663 R
ev
. -0
5 … 76
4. Table of contents
1. Target group 1
2. Warnings 1
2.1 General warnings 1
2.2 Designated uses 2
2.3 Risks in the event of misuse 2
3. Declaration of conformity 3
4. Table of contents 5
5. Abbreviations 6
6. Features 7
6.1 Technical data 7
6.2 Nomenclature 8
6.3 Adjustment ranges 9
6.4 Accuracy class / closing pressure class 11
6.5 Selection of regulating spring 12
6.5.1 For FRM-NOC 10010/10015/100025 12
6.5.2 For FRM-NOC 10020/100040/100050 13
6.6 Selection of spring SAV 14
6.7 Type plate 15
7. Function 16
8. Dimensions 19
9. Assembly/installation 23
9.1 General information 23
9.2 Assembly instructions 24
9.3 Vent Lines (Only U.S.A. and Canada) 25
9.4 Torques 26
10. Function Saftey Shut off Valve (SAV and ASE) 27
11. Adjustment 28
11.1 Adjusting the regulator 28
11.2 Adjusting the SAV 30
11.3 Example of calculations of adjustment values 31
11.4 Regulating spring replacement 32
11.4.1 Type UHD 32
11.4.2 Type ND, MD and HD 34
11.5 Spring replacement SAV 36
11.5.1 Spring replacement W
dso
36
11.5.2 Spring replacement W
dsu
37
12. Commissioning, decomissioning and recomissioning of FRM-NOC or SAV 39
12.1 General information 39
12.2 Initial pressurization of FRM 39
12.3 Leakage test 39
12.4 Commissioning/unlocking/control of adjustment values 40
12.5 Recommissioning 42
12.6 Decommissioning 42
13. Faults and their causes 42
14. Maintenance 44
14.1 General information 44
14.2 Regulatory maintenance instructions 48
14.2.1 Preparation 48
14.2.2 Replace the working membrane 48
14.2.2.1 Type UHD 48
14.2.2.2 Type ND, MD for 1", 11/2", DN 25 and type HD 50
14.2.2.3 Type ND, MD for 2", DN 40 y DN 50 52
14.2.3 Replace valve seat 54
14.2.3.1 Type UHD 54
14.2.3.2 Type ND, MD for 1", 11/2", DN 25 and type HD 55
14.2.3.3 Type ND, MD for 2", DN 40 and DN 50 57
14.2.4 Replace control plate 59
14.2.4.1 Type UHD 59
14.2.4.2 Type ND, MD for 1", 11/2", DN 25 and type HD 61
14.2.4.3 Type ND, MD for 2", DN 40 and DN 50 61
14.3 Maintenance SAV 63
14.3.1 Preparation 64
14.3.2 Removing the ASE (SAV mechanism only) from the housing 64
14.3.3 Assembly of the ASE on the body 65
14.4 Tools required 66