ADS Environmental Services ADS TRITON+ QR 775027 A3 - Manual (Page 346)

Maintenance and Troubleshooting 10-25
Replacing the Fuses in the Monitor
The TRITON+ monitor contains a removable power regulator
secured to a special dome that resides inside the monitor enclosure
and is attached to the monitor top. If a regulator failure occurs, it
typically involves a bad fuse on the regulator board corresponding
to communications or sensors. The regulator board has three fuses
(ADS p/n 508071, 508072, and 508073) that may be replaced
independently upon failure.
The 5-volt blue fuse corresponds to the sensors and can be blown
due to a shorted sensor. If this fuse is blown, the monitor cannot
detect the sensors. The 3.3-volt yellow fuse is associated with the
processor board. When blown, this fuse prevents the monitor from
logging data and performing successful communications. The red
(main input) fuse is related to the regulator board and rarely has
issues.
Refer to the Troubleshooting section beginning on page 10-33 to
identify whether a fuse may be the source of a particular problem
that has occurred within the TRITON+ system and, if so, which fuse
may require replacement
Note: If the troubleshooting procedures indicate that a
sensor may have shorted or a sensor may have shorted and
the 5-volt (blue) fuse on the power regulator in the monitor
corresponding to the sensor may have blown, do not
connect the potentially shorted sensor to the same monitor
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.