Maintenance and Troubleshooting 11-13
1. Collect the data from the monitor (remotely or on-site). This
will reduce the risk of data loss once the battery is
disconnected.
2. Remove the monitor from the manhole, and disconnect the
following cables as applicable:
Antenna cable from the ANTENNA port on the
monitor
Sensor cable(s) from the corresponding port(s) on the
monitor
3. Move the monitor from the hazardous area (i.e., at least 20 feet
(6.1 m) away from the manhole), and place in a dry location.
4. Brush off the monitor enclosure and remove the 4 bolts
securing the top to the canister using a 13-mm nut driver.
Note: Make a note of the orientation of the monitor top to
the canister before removing the bolts. Keeping proper
orientation between the canister and the top is critical to
maintaining the water and airtight seal on the monitor.
5. Wipe away any debris or moisture that could enter the chassis
once the unit is opened.
6. Remove the top (with the attached power regulator dome) by
pulling it straight up from the canister. The battery rests at the
bottom of the canister, and an 18-inch long cable extends from
the battery pack to the top.
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