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DGC-2020HD Maintenance
8 • Maintenance
Preventive maintenance consists of periodically checking that the connections between the DGC-2020HD
and the system are clean and tight. Periodically check that the mounting hardware is clean and fastened
with the proper amount of torque. DGC-2020HD units are manufactured using state-of-the-art, surface-
mount technology. These components are encased in potting material. As such, Basler Electric
recommends that no repair procedures be attempted by anyone other than Basler Electric personnel.
Storage
This device contains long-life aluminum electrolytic capacitors. For devices that are not in service (spares
in storage), the life of these capacitors can be maximized by energizing the device for 30 minutes once
per year.
Backup Battery Replacement
The backup battery for the real-time clock is a standard feature of the DGC-2020HD. A battery is used to
maintain clock function during loss of power supply voltage. In mobile substation and generator
applications, the primary battery system that supplies the DGC-2020HD power supply may be
disconnected for extended periods (weeks, months) between uses. Without battery backup for the real
time clock, clock functions will cease if battery input power is removed.
The backup battery has a life expectancy of approximately five years depending on conditions. After this
time, you should contact Basler Electric to order a new battery, Basler Electric P/N 38526.
Replacement of the backup battery for the real-time clock
should be performed only by qualified personnel.
Do not short-circuit the battery, reverse battery polarity, or
attempt to recharge the battery. Observe polarity markings next
to the battery socket when inserting a new battery. The battery
polarity must be correct in order to provide backup for the real-
time clock.
Failure to replace the battery with Basler Electric P/N 38526
may void the warranty.
Battery Replacement Procedure
Battery access is located on the rear of the DGC-2020HD. See the Terminals and Connectors chapter for
battery location.
Step 1: Remove the DGC-2020HD from service.
Step 2: Locate the battery socket on the rear of the DGC-2020HD. Remove the old battery. Consult
your local ordinance for proper battery disposal.
Step 3: Insert the new battery so that the polarity markings on the battery match the polarity markings
next to the battery socket.
Step 4: Return the DGC-2020HD to service.
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