ADS TRITON+ - Page 434

11-36 ADS TRITON+ Manual
with a new 5-volt fuse or another monitor until confirming
that the sensor is functional (i.e., not shorted) using a
voltmeter. If the sensor is shorted, it also will blow the
newly replaced 5-volt fuse or the existing 5-volt fuse in the
other monitor. Please contact ADS Client Services for
detailed instructions on determining whether a sensor has
shorted.
Since the fuses attach to the board on the inside of the power
regulator dome inside the monitor, access to and replacement of a
fuse first requires opening the monitor and removing the dome.
Replace a fuse(s) in the monitor in the following way:
1. (applicable only when blue fuse requires replacement) Collect
the data from the monitor (remotely or on-site) to limit the risk
of losing data once the battery is disconnected.
2. Remove the monitor from the manhole.
3. (applicable only to externally-powered monitors) Turn off the
power to the monitor at the external source, and then
disconnect the external power/communications cable from the
COMM + EXT PWR port on the monitor.
4. Disconnect the antenna cable from the ANTENNA port on the
monitor from the COMM + EXT PWR port on the monitor.
5. Disconnect the sensor cable(s) from the corresponding port(s)
on the monitor.
6. Remove 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.
7. 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.
8. Wipe away any debris or moisture that could enter the chassis
once the unit is opened.