MaintenanceWarning!These servicing instructions are for use by qualified personnel only. Toreduce the risk of electric shock, do not perform any servicing otherthan that specified in the operating instructions unless you arequalified to do so.Before performing any maintenance procedures, remove the DECS-250 from service. Refer to the appropriate site schematics to ensurethat all steps have been taken to properly and completely de-energizethe DECS-250.CautionIn accordance with the guidelines defined in USB standards, the USBport on this device is not isolated. To prevent damage to a connectedPC or laptop, the DECS-250 must be properly tied to ground.StorageIf the unit is not installed immediately, store it in the original shipping package in a moisture- and dust-freeenvironment.Preventive MaintenanceConnectionsPeriodically check the connections of the DECS-250 to ensure they are clean and tight and remove anyaccumulation of dust.Electrolytic CapacitorsThe DECS-250 contains long-life aluminum electrolytic capacitors. For a DECS-250 kept in storage as aspare, the life of these capacitors can be maximized by energizing the device for 30 minutes once peryear. The energizing procedure for the DECS-250 is shown below.DECS-2501. Apply control power as indicated by the device style number. For this maintenance procedure, it isrecommended 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)2. Apply operating power within one of the following ranges.• 56 to 70 Vac• 100 to 139 Vac, or 125 Vdc• 190 to 277 Vac, or 250 VdcCALL US TODAY1-888-POWER-58REQUEST A QUOTEparts@genpowerusa.comSHOP ONLINEwww.genpowerusa.comCALL US TODAY1-888-POWER-58REQUEST A QUOTEparts@genpowerusa.comSHOP ONLINEwww.genpowerusa.com
