Manual

- 3 - GD-70
<Contents>
Preface .................................................................................................................... 2
Important Notices on Safety .................................................................................... 4
1 Overview ................................................................................................................. 6
1-1. Product Components............................................................................................... 6
1-2. Purpose of use ........................................................................................................ 6
1-3. Product Specifications ............................................................................................. 7
1-4. Names and functions for each part.......................................................................... 9
1-5. Units description...................................................................................................... 11
1-6. Block diagram.......................................................................................................... 14
2 Installation ............................................................................................................... 16
2-1. Requirements .......................................................................................................... 16
2-2. Installation of detector ............................................................................................. 19
2-3. How to wire.............................................................................................................. 23
2-4. Relocate .................................................................................................................. 29
2-5. Disposal................................................................................................................... 29
3 How to Operate ....................................................................................................... 30
3-1. Preparation for start-up............................................................................................ 30
3-2. How to start the detector ......................................................................................... 30
3-3. How to exit............................................................................................................... 32
3-4. Basic operating procedures..................................................................................... 32
3-5. Modes...................................................................................................................... 33
4 Detection Mode ....................................................................................................... 35
4-1. Gas alarm activation................................................................................................ 35
4-2. Fault alarm activation .............................................................................................. 37
4-3. External output operation ........................................................................................ 38
4-4. Other functions ........................................................................................................ 40
5 Alarm test Mode ...................................................................................................... 43
6 User Mode............................................................................................................... 44
7 Regular Maintenance Mode .................................................................................... 48
8 Maintenance............................................................................................................ 62
8-1. Maintenance intervals and items ............................................................................. 62
8-2. Gas calibration method............................................................................................ 64
8-3. Other adjustments/Cleaning method ....................................................................... 67
8-4. How to replace parts................................................................................................ 68
8-5. Procedures to store the detector or leave it for a long time ..................................... 70
9 Troubleshooting....................................................................................................... 71
Definition of Terms................................................................................................... 74
Detection principle ................................................................................................... 75