Honeywell Gas Detector PHD6

Remove the two screws that hold the inlet port to the pump

Gently pull the dust filter holder free of the pump

Remove and replace the dust filter that is located in the holder

Use a small screwdriver or other object to punch through the filter and remove it. The gasket that sits between the inlet port and the filter should come out with the filter

Place the new hydrophobic filter with the filter side down in place of the one removed in step 4. The gasket should be located on top of the filter and should sit against the dust filter holder

Replace the dust filter holder (which now has a new filter in it) and secure it with the two screws removed in step 1

Sign off on the pump filters replacement

Access the threaded sample probe handle to reach the filters

Particulate filter held in place by clear filter cup

To replace the particulate filter, remove the old filter and cup

Insert a new filter into the cup

Slide the cup back into place in the probe handle

The hydrophobic barrier filter fits into a socket in the rear section of the probe handle

The narrow end of the hydrophobic barrier filter is inserted towards the rear of the handle

To avoid accidentally introducing particulate contaminants into the system, turn the sample probe upside-down prior to removing either the hydrophobic filter or the particulate filter

Sign off on the filter replacement

Remove the four screws located below the battery pack insertion from the back face of the PHD6

Turn the instrument over to reveal the front face and gently remove the sensor cover

Remove the sensor that is to be replaced

Insert the new sensor into the appropriate location on the sensor board

Reinstall the sensor cover by aligning it properly over the sensors and securing it with the four screws that were removed in step 3

Reattach the battery pack and re-tighten the top center screw

New sensors must be allowed to stabilize prior to use according to the following schedule. The detector must be powered off and a functional battery pack must be installed for the sensor to stabilize.

CAUTION! Always turn the PHD6 off prior to removing the battery pack. Removal of the battery pack with the instrument turned on may cause corruption of stored data in the PHD6.

WARNING! The PHD6 must be located in a non-hazardous location whenever alkaline batteries are removed from the alkaline battery pack. Removal of the alkaline batteries from the battery pack in a hazardous area may impair intrinsic safety.

WARNING! Use only Duracell MN1500 or Ultra MX1500, Eveready Energizer E91-LR6, Eveready EN91 batteries. Substitution of batteries may impair intrinsic safety.

PHD6 located in a non-hazardous location?

Are you using the correct batteries?

Loosen the top center screw on the back of the instrument

Gently pull the top of the battery away from the instrument

Remove the battery once the top clears the upper housing by pulling up and away

PID sensor removed from the PHD6

Stack removed from the top of the sensor

Stack and lamp removed from the sensor body

Used lamp, stack or both discarded and rebuilt with replacement part(s)

Spring dropped into the center of the sensor body