Replacing The Sample Inlet Filter - Dräger Multi-PID 2 User Manual

Routine Maintenance

Replacing the Sample Inlet Filter

The Multi-PID 2 is equipped with a combined dust and water filter to
reduce detector contamination. As the filter collects dust, the Multi-
PID 2's inlet flow rate and sensitivity decrease. The filter will not allow
water to pass through, but the filter will not stop all solvents.
NOTE:
Do not aspirate liquid samples with the Multi-PID 2!
Replace the filter on a weekly basis, or more frequently if the Multi-
PID 2 is used in a dusty or wet environment. You must replace the fil-
ter if the Multi-PID 2 has been exposed to water. If you are sampling
hot gases or vapors, condensation in the sample line may also affect
the filter.
WARNING:
Do not replace the inlet filter in a hazardous loca-
tion.
To replace the inlet filter:
1. Turn the instrument off. Unscrew the filter housing from the detec-
tor housing. Be careful not to lose the O-ring seal.
2. Remove the Teflon/Polypropylene filter and install the new filter
(Part No. 83 17 681). Place the filter so that the Teflon side is fa-
cing down in the filter housing and the mesh side is facing the Mul-
ti-PID 2.
Handle the filter disk only by the edges. The mesh may be dama-
ged or contaminated by excessive handling. Use forceps if possi-
ble.
3. Replace the filter housing.
4. Recalibrate and then continue normal operation.
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