Dell 3750W User Manual

Also see for H952N: Getting Started With Your System

Contents

Dell 3750W User Manual Manual pdf 60 page image

60 | UPS Maintenance5 Replace the UPS front cover (see Figure 28).Figure 28. Replacing the UPS Front CoverStoring the UPS and BatteriesIf you store the UPS for a long period, recharge the battery every 6 months by plugging the UPS into apower outlet. The batteries charge to 90% capacity in approximately 4 hours. However, it isrecommended that the batteries charge for 48 hours after long-term storage.Check the battery recharge date on the shipping carton label. If the date has passed and the batterieswere never recharged, do not use the UPS. Contact your service representative.When to Replace BatteriesWhen the status summary screen displays the UPS fault icon with the “Service Battery” alarm and theaudible alarm sounds continuously, the batteries may need replacing. Contact your servicerepresentative to order new batteries.NOTE: With the user-replaceable battery feature, UPS batteries can be replaced easily without turning the UPSoff or disconnecting the load.