Bacharach MVR-300, User Manual

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MVR-300™ Refrigerant Gas Detector
P/N: 6203-9000 Version 1 3
TABLE OF CONTENTS
SECTION 1. SAFETY ............................................................................................................................ 5
1.1 Definition of Alert Icons .............................................................................................................. 5
1.2 General Safety Statements ....................................................................................................... 5
1.3 Safe Connection of Electrical Devices ...................................................................................... 6
SECTION 2. DESCRIPTION .................................................................................................................. 7
2.1 Product Overview ...................................................................................................................... 7
2.2 Intended Use ............................................................................................................................. 7
2.3 Design Features ........................................................................................................................ 7
2.4 Components Overview .............................................................................................................. 8
SECTION 3. INSTALLATION .............................................................................................................. 10
3.1 General Information for Installation ......................................................................................... 10
3.2 Mechanical Installation ............................................................................................................ 10
3.3 Configuration ........................................................................................................................... 12
3.4 Electrical Installation ................................................................................................................ 14
SECTION 4. OPERATION ................................................................................................................... 17
4.1 Start-up .................................................................................................................................... 17
4.2 Alarm Management Function and Configuration ..................................................................... 17
4.2.1 Default Alarm Function ............................................................................................... 17
4.2.2 Alarm Delay – Switches 2 and 3 ................................................................................ 18
4.2.3 Failsafe – Switch 4 ..................................................................................................... 20
4.2.4 Alarm 2 Relay – Switch 5 ........................................................................................... 20
4.2.5 Latching Alarm State – Switch 6 ................................................................................ 20
4.2.6 Buzzer Disable – Switch 7 .......................................................................................... 20
4.3 Other Switch Configurations .................................................................................................... 21
4.3.1 Reset (Cycle Power) - Switch 1 ................................................................................ 21
4.3.2 Reset to Factory Default Values - Switch 8 ............................................................... 21
4.4 Operation of Magnetic Switches, Buzzer, and LED ................................................................ 22
SECTION 5. MAINTENANCE .............................................................................................................. 23
5.1 Maintenance Intervals ............................................................................................................. 23
5.2 Adjustments ............................................................................................................................. 23
5.2.1 Introduction ................................................................................................................. 23
5.2.2 General Procedure ..................................................................................................... 24
5.2.3 Zero Adjustment ......................................................................................................... 25
5.2.4 Span Adjustment ........................................................................................................ 25
5.2.5 Bump Test .................................................................................................................. 26
5.3 Troubleshooting ....................................................................................................................... 26
5.3.1 Failed Span Adjustment ............................................................................................. 26
5.3.2 Hexadecimal Format .................................................................................................. 27
5.3.3 Fault Conditions .......................................................................................................... 28
5.3.4 Fatal Faults ................................................................................................................. 29
5.3.5 Critical Faults .............................................................................................................. 29
5.3.6 Negative Gas Fault ..................................................................................................... 29
5.3.7 Non-Critical Faults ...................................................................................................... 29
5.4 Replacing the Sensor Module ................................................................................................. 30
5.5 Cleaning the Detector .............................................................................................................. 31
SECTION 6. SENSOR PRINCIPLE ..................................................................................................... 32
SECTION 7. DISPOSING OF THE DETECTOR ................................................................................. 33
SECTION 8. TECHNICAL DATA......................................................................................................... 34
8.1 Approvals ................................................................................................................................. 34
8.2 Specifications for Modbus RTU Digital Communication over RS-485 .................................... 34
8.3 Power Supply and Relay Specifications .................................................................................. 34
8.4 Wiring Specifications ............................................................................................................... 34
8.5 Physical Specifications ............................................................................................................ 35
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