Onset HOBO U23-002 Replacement Manual

HOBO® U23-002 Replacement Cable/Sensor (CABLE-U23-002)
The U23-002 Replacement Cable/Sensor replaces a damaged cable on the U23-002. The replacement cable includes a built-in
temperature sensor and an RH sensor.
Contents:
• Cable/Sensor
• Dome Nut/Grommet assembly (installed on cable)
• Cable Tie
Required Equipment:
• Adjustable Wrench
• Utility Knife
Removing the Existing Cable/Sensor
1. Unscrew the grommet from the case and slide the
grommet/dome nut assembly down the cable. Use a wrench
if necessary.
2. Remove the end cap from the case. Twist the end cap
counterclockwise until the bumps on the cap line up with the
notch on the case, and then pull the cap off of the case.
3. Slide the board out of the case.
4. Remove the 3 desiccant packs and inspect them. If they are
not bright blue, dry them by leaving them in a warm (≤70
o
(158 F), dry location until the bright blue color is restored. If
a desiccant pack remains pink and will not turn blue, replace
it with a new desiccant pack (Part #: DESICCANT1).
5. Using a utility knife, cut the tie holding the sensor to the
board.
12990-B MAN-CABLE-U23-002
6. Disconnect the cable from the jack on the board (pull straight
out).
7. Pull the cable out through the case.
8. Discard cable, dome nut, and grommet.
Connecting the New Cable/Sensor
1. Slide the new cable through the case, connector end first.
2. Slide the dome nut/grommet assembly up towards the case
and hand-tighten the grommet. Do not tighten the dome nut
until assembly is complete to allow for sliding of the cable.
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