13
REPLACEMENT PART INSTRUCTIONS
To replace the filter cartridges, follow these steps:
Fig. 6
Prefilter-Combined First and Second Stages
1. Pull plastic drain tube (1) up through the case.
2. Unscrew prefilter bowl assembly (2) from manifold (5) and clean bowl assembly in mild soap
and water, blowing dry with low pressure compressed air.
3. Remove two-stage prefilter element (3) by unscrewing end cap retaining nut (4) and pulling
prefilter element down over center rod of manifold.
4. Discard clogged prefilter element.
5. Inspect manifold for dirt and contaminants, clean as required, and inspect O-ring (6) located
inside manifold for any cuts or cracks. Replace O-ring, if required, to prevent air leakage.
Serious injury could result if the AIR SAMPLE METERING VALVE is not properly adjusted.
Proper sample airflow to CO monitor is required for monitor to give correct CO level readout.
Failure to do so may result in sickness or death.
Always turn off air supply and bleed air pressure before disassembling the 3M filter and
regulator panel or
serious injury could result.
W
WARNING
W
WARNING
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