Basler-electric DECS-250N User Manual Page 319

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9440500990 Rev D 303
DECS-250N Maintenance
Maintenance
Warning!
These servicing instructions are for use by qualified personnel only. To
reduce the risk of electric shock, do not perform any servicing other
than that specified in the operating instructions unless you are
qualified to do so.
Before performing any maintenance procedures, remove the
DECS-250N from service. Refer to the appropriate site schematics to
ensure that all steps have been taken to properly and completely de-
energize the DECS-250N.
Caution
In accordance with the guidelines defined in USB standards, the USB
port on this device is not isolated. To prevent damage to a connected
PC or laptop, the DECS-250N must be properly tied to ground.
Storage
If the unit is not installed immediately, store it in the original shipping package in a moisture- and dust-free
environment.
Preventive Maintenance
Connections
Periodically check the connections of the DECS-250N to ensure they are clean and tight and remove any
accumulation of dust.
Electrolytic Capacitors
The DECS-250N contains long-life aluminum electrolytic capacitors. For a DECS-250N kept in storage as
a spare, the life of these capacitors can be maximized by energizing the device for 30 minutes once per
year. The energizing procedure for the DECS-250N is shown below:
Apply control power as indicated by the device style number. For this maintenance procedure, it is
recommended that the applied voltage not exceed the nominal value.
Style Lxxxxxx: 24/48 Vdc (16 to 48 Vdc)
Style Cxxxxxx: 120 Vac (82 to 120 Vac at 50/60 Hz) or 125 Vdc (90 to 125 Vdc)
It is not necessary to apply operating power to the bridge as this circuitry contains no electrolytic
capacitors.
Cleaning the Front Panel
Only a soft cloth and water-based solutions should be used to clean the front panel. Do not use solvents.
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