Instruction 3015-5506
1
Scope
These instructions describe how to replace the IR bench in the Halogen Gas Monitor (Single-Zone or Multi-
Zone), Ammonia Gas Monitor (SZ or MZ), and the Carbon Monoxide Gas Monitor Single Zone.
It is assumed that the user is familiar with the operation of the appropriate monitor. If necessary, refer to the
instructions for detailed operation and maintenance information. Table 1 provides a list of the appropriate
instructions and parts necessary for each model.
* Not for individual sale. Used for ID purposes only. (i.e. To order replacement kit for your bench which is
labeled model number 3015-5087, place order for kit number 3015-5509.)
Table 1: Part Number Information
Items Required:
Replacement IR Optical Bench Kit (includes bench assembly, cable ties, and instruction sheet)
Cable Ties (Qty. 2) 3015-2835
Instruction Sheet 3015-5506
Medium Phillips Head Screwdriver
Small Flat-Blade Screwdriver
Wire Cutter (for removing cable ties)
Removing the IR Bench
1. Find the AC power source for the monitor and switch OFF the AC circuit breaker. Ensure that the
monitor’s front panel green MONITOR ON indicator is OFF.
2. Use a Phillips screwdriver to remove the monitor’s two door screws, and then open the door.
3. Take time to familiarize yourself with the internal components displayed on the following page. Figure 1
is a diagram of the Single Zone monitors while Figure 2 is a diagram of the Multi-Zone monitors. Figure
3 shows the R37 component used to adjust the IR emitter drive level. This is only present on older
models.
Monitor Type
Bench Replacement Kit
Solo Bench*
Instruction Manual
HGM-SZ 3015-4572 3015-5086 3015-4256
HGM-MZ 3015-4572 3015-5086 3015-5074
AGM-SZ 3015-4492 3015-5087 3015-4256
AGM-MZ 3015-4492 3015-5087 3015-5074
CO2-SZ 3015-5507 3015-5090 3015-4603
CO2-MZ 3015-5507 3015-5090 3015-5074
Single Zone / Multi-Zone Bench
Replacement
Instruction 3015-5506
Rev. 0 – August 2010
