MSA Chillgard RT - Chapter 5 Maintenance; General Maintenance and Parts; Troubleshooting Unit Power and Indicators; Troubleshooting Sensor and Flow Failures

ix
Figure B-6. Typical Interface Modules………………B-5
Unpacking the Shipping Carton ...................................... B-6
Identifying the Unit .......................................................... B-6
Table B-2. Part Numbers and Supplied Relays .... B-6
Mounting Your Unit ............................................................... B-6
Electrical Connections for the Chillgard RT
Relay Module ....................................................................... B-6
Main Power Connections ................................................ B-6
CAUTION ................................................................... B-6
Communication Cable Connections ............................. B-7
WARNING .................................................................. B-7
CAUTION ................................................................... B-7
WARNING .................................................................. B-7
Communication Cable Connections
to the Chillgard RT Relay Module ................................... B-8
Communication Cable Connections
to the Chillgard RT Refrigerant Monitor .......................... B-8
Relay Wiring .................................................................... B-8
Operation ............................................................................. B-9
Front Panel ..................................................................... B-9
Power ............................................................................. B-9
Trouble ........................................................................... B-9
CAUTION ................................................................... B-9
WARNING .................................................................. B-9
Ready Indicator ............................................................. B-10
Chillgard RT Relay Module Relays ............................... B-10
The Common Horn Relay ............................................. B-10
The Trouble Relay ......................................................... B-10
The Discrete Caution, Warning and Alarm Relays ....... B-11
Applying Power ............................................................. B-11
Alarm Relay Configuration ............................................
B-11
Latching ......................................................................... B-11
Normally Energized/De-energized ................................ B-11
Operation ....................................................................... B-12
Reset Switch ................................................................. B-12
Trouble Relay ................................................................ B-12
Horn Operation .............................................................. B-13
Configuration ................................................................. B-13
Reset Switch ................................................................. B-13