Bacharach HGM-SZ Specifications download pdf (Page 3)

Instruction 3015-4256 i

Table of Contents

INTRODUCTION........................................................................................................................................... 1

How to Use This Manual ......................................................................................................................... 1

Warning Statements................................................................................................................................ 1

Caution Statements ................................................................................................................................. 1

Hazard Symbols on Monitor.................................................................................................................... 1

Safety Precautions ................................................................................................................................... 2

AC Power Supply.................................................................................................................................. 2

Protective Grounding ........................................................................................................................... 2

Explosive Atmosphere.......................................................................................................................... 2

Proper Exhaust Venting ...................................................................................................................... 2

Working Inside Monitor ....................................................................................................................... 2

Misuse and Modifications to Monitor.................................................................................................. 2

In Case of Malfunction ......................................................................................................................... 2

Fusing.................................................................................................................................................... 2

Installation Category ........................................................................................................................... 2

Altitude Limit ....................................................................................................................................... 2

Cleaning ................................................................................................................................................ 2

Functional Overview................................................................................................................................ 3

General Description ............................................................................................................................. 3

Understanding Monitoring Levels ...................................................................................................... 3

Response to the Presence of Multiple Refrigerants ........................................................................... 3

Suggested Location of Sampling Point ............................................................................................... 4

INSTALLATION............................................................................................................................................ 5

Installation Considerations ..................................................................................................................... 5

Warnings and Cautions ....................................................................................................................... 5

Inspection.............................................................................................................................................. 5

Locating the Monitor............................................................................................................................ 5

Mounting Instructions ............................................................................................................................. 6

Connecting Gas Sample and Exhaust Lines .......................................................................................... 6

Overview ............................................................................................................................................... 6

Tubing Considerations ......................................................................................................................... 7

Connecting the Gas-Sample Line........................................................................................................ 7

Connecting the Exhaust Line .............................................................................................................. 7

Interior Schematic ................................................................................................................................... 8

Electrical Wiring ...................................................................................................................................... 9

Connecting External Alarms................................................................................................................. 10

Overview ............................................................................................................................................. 10

Connection .......................................................................................................................................... 10

4–20 mA Current Loop Interface .......................................................................................................... 11

OPERATION............................................................................................................................................... 13

Front Panel Display and Controls ........................................................................................................ 13

General Operation ................................................................................................................................. 13

Display Screens ...................................................................................................................................... 14

Initial Power Up ................................................................................................................................. 14

Data Display Screen........................................................................................................................... 14

Function Screens ................................................................................................................................ 15

Working with Gas Alarms ..................................................................................................................... 18

Overview ............................................................................................................................................. 18

Clearing / Silencing a Gas Alarm ...................................................................................................... 18

Viewing the Gas Alarm Log............................................................................................................... 18

1 2 3 4 5 6 7 8 ... 33 34

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Bacharach HGM-SZ Specifications Page 3

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