Filter Maintenance - Honeywell CM4 Technical Handbook

CM4 Four-Point Continuous Monitor

9.3 Filter Maintenance

The CM4 utilizes filters to protect the unit from dust particles and potentially damaging gases. Table 9-2 provides maintenance information
about filters. Figure 9-6 shows the relative positions of the various filters. See
Name of Filter
Acid Scrubber Filter
Inside analyzer under Chemcassette
Particulate Filters
Charcoal Freon Filters Inside analyzer under Chemcassette
(CM4-P only)
External Sample Line
Particulate Filter
Teflon Filter Housing
Assembly
CM4 Technical Manual
Location
Under Chemcassette carrier
®
See Figure 9-6
carrier
®
See Figure 9-6
® carrier
See Figure 9-6
End of sample line
(if installed)
End of sample line
(if installed)
Table 9-2: Filter Replacement Schedule
Section 3.7 for information on external sample line filters.
Replacement
Part Number
Frequency
710235 6 Months
780248 3 to 6 Months
1874-0139 1 Month
Gas specific - See
1830-0055
1 Month
(filter ass'y)
9-8
Notes
Replace the filter if the filter media (all or any) part turns
blue or sample flowrate cannot be achieved
Section 3.7 and Appendix A
Use filter membrane P/N 0235-1072 (100 per pack) or
replacement in filter housing