Chemgard Infrared Gas Monitor
Table 5-1. Replacement Parts
Internal Filter, Single Point
Internal Filters, all Multipoint and single-point
655533
Filter, End-of-Line 711561
Ammonia Unit, Filter, End-of-Line
2.0 amp, 250 volt Fuse 638091
Front Panel Printed Circuit Board Assembly
10014705
Pump Assembly 711479
Polyurethane Tubing, 1/4" (6.35 mm) OD,
603806
Polyethylene Tubing, 1/4" (6.35 mm) OD,
0.17" (4.32 mm) ID
29264
Nylon Tubing, 1/4" OD, 0.180" (4.57 mm) ID
Strobe, Beacon Assembly 634674
Connector, Beacon Assembly 637523
Zero Gas Scrubber 803873
Front Panel Printed Circuit Board Assembly
711386
Printed Circuit Board, Membrane Switch, Keypad
Label, Keypad 711615
Section 5
Maintenance
General Maintenance
Under normal operation conditions the Chemgard
Monitor requires minimal maintenance. The
end-of-sample-line filter(s) should be examined
regularly for dirt/dust build-up and replaced when
necessary. If the filter(s) become severely clogged
with dust, the flow rate will eventually fail and a
flow alarm will occur. If the end-of-sample-line
filters are used and serviced correctly, the filters
installed inside the monitor should rarely require
replacement; however, these internal filters must
be ins
pected periodically.
Obtaining Replacement Parts
To obtain replacement parts, address the order or
inquiry to:
Mine Safety Appliances Company
Instrument Division
P.O. Box 427, Pittsburgh, PA 15230
or call, toll-free, 1-800-MSA-INST.
WARNING
Use only genuine MSA replacement parts
when perform ing any maintenance
procedures. Failure to do so may seriously
impair unit performance. Repair or alteration
of the Chemgard Monitor, beyond the scope
of these instructions or by anyone other than
authorized MSA service personnel, could
cause the product to fail to perform as
designed and persons who rely on this
product for their safety could sustain serious
personal injury or death.
Troubleshooting Guidelines
See TABLE 5-2.