INFICON DataFID Portable Flame Ionization Detector for Leak Detection and Repair (LDAR) - Manual (Page 80)

074-578-P1A 80
Maintenance of the Flame Ionization Detector
The DataFID detector is a not a field replaceable unit therefore should not be serviced by the
user. Any problems which are occurring with the detector should be directed to INFICON
Service.
Replacing Inlet Filter
The DataFID has a filter located in the instrument inlet. This filter is designed to remove dust
and water to reduce detector contamination. As the filter collects dust, the DataFID
’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 DataFID!
Replace the filter on a monthly basis, or more frequently if the DataFID is used in a dusty or wet
environment. You must replace the filter if the DataFID has been exposed to liquid water. The
pump will sound labored when the filter requires replacement.
CAUTION: Do not replace the inlet filter in a hazardous location.
1. Turn off the instrument. Unscrew the filter housing from the probe housing or unit
housing. Be careful not to lose the O-ring seal.
Figure 34. Inlet Filter
2. Remove the Teflon/Polypropylene filter and install the new filter (Part No. MX396015).
Place the filter in the filter housing with the Teflon side facing outward in the filter
housing and the polypropylene mesh side facing the DataFID unit. Handle the filter disk
only by the edges. The mesh may be damaged or contaminated by excessive handling.
Use forceps if possible.
NOTE: Each filter is protected by a piece of blue plastic. Remove the plastic
before installing the filter in DataFID.