HP POD 20c Maintenance And Service Manual page 17

Removing the differential pressure sensor
Using a small wrench, loosen the tube retaining lock nut.
1.
Label the hose connector tube or take a picture to remember which hose to reconnect to the I/O system
2.
later.
Remove the hoses.
3.
Pull the release tab at the top of the sensor to release it (1), grasp the edges of the sensor, and then pull
4.
forward to remove it (2).
Replacing the differential pressure sensor
Slide the differential pressure sensor into the grooves until it clicks into place.
1.
Refer to your notes on where to insert the hose to connect it to the I/O system.
2.
Using a small wrench, tighten the retaining lock nut. Do not over-tighten it.
3.
Reconnect the hose to the I/O system.
4.
Removal and replacement procedures 17