Bacharach 3015-4521 Instructions

These instructions describe how to replace the IR Optical Bench in the AGM300 Ammonia Gas Monitor.  

It is assumed that the user is familiar with the operation of the AGM300 / ADM800 Ammonia Gas 

Monitoring System. If necessary, refer to Instruction 3015-4275 for detailed operation and maintenance 

information. 

Items Required: 

•  Replacement IR Optical Bench Kit 3015-4521: 

o

IR Bench Assembly 3015-4204 

o

Wire Ties (Qty. 2) 3015-2835  

o

Instruction Sheet 3015-4723 

•  Medium Phillips Head Screwdriver 

•  Small Flat Blade Screwdriver 

•  Wire Cutter (for removing wire ties) 

Removing the IR Optical Bench 

1.  Find the AGM300 Ammonia Gas Monitor and switch OFF its AC 

circuit breaker. Observe that the monitor’s green MONITOR ON 

indicator light on the front panel should be OFF. 

2.  Use a Phillips screwdriver to loosen the monitor’s two door latches, 

and then open the door. 

3.  Take a few minutes to familiarize yourself with the internal 

components of the AGM300 shown in Figure 2. 

AGM300 Optical Bench

Replacement Kit 3015-4521

Instruction 3015-4723

Rev. 0 – February 2006

Figure 1. AGM300 

Ammonia Gas Monitor 

Upper Gas Sample Tube 

Upper Electrical Connector (Red) 

Upper Wire Tie 

Main Board 

Lower Wire Tie 

AC Power Switch 

Lower Electrical Connector 

Lower Gas Sample Tube 

Figure 2. AGM300 Components