American Power Conversion 620 Replacing the Battery, Troubleshooting, Replacement Batteries

Replacing the Battery

This UPS has an easy to replace hot-swappable battery.

Note: Please read the cautions in the APC Safety Guide.

Replacement Batteries

See your dealer or call the number in this manual for information on replacement battery kits. For 280 and 420 models, order RBC 2. For 650 models, order RBC 4.

Battery Replacement Procedure

Battery replacement is a safe procedure, isolated from electrical hazards. You may leave the UPS and loads on for the following procedure.

Note: Once the battery is disconnected, the loads are not protected from power outages.

1.Lay the UPS on its left side. Remove the two screws holding on the battery door and open the door.

Note: It may be necessary to pull the battery door slightly toward the front of the unit in order to open the door fully.

2.Gently pull out the battery by grasping the white tab.

Troubleshooting

Problem	Possible Cause	Solution
UPS will not turn on.	On/off/test button not pushed.	Press the on/off/test button to
		power the UPS and the loads.
	UPS input circuit breaker	Reduce the load on the UPS
	tripped.	by unplugging equipment and
		reset the circuit breaker by
		pressing the plunger back in.
UPS will not turn on or off.	Computer interface problem.	Disconnect the computer
		interface. If the UPS now
		works normally, check the
		interface cable and the
		attached computer.
UPS operates on-battery even	UPS's input circuit breaker	Reduce the load on the UPS
though normal line voltage is	tripped.	by unplugging equipment and
thought to exist.		reset the circuit breaker by
		pushing the plunger back in.
UPS beeps occasionally.	Normal UPS operation.	None. The UPS is protecting
		the load.
UPS does not provide	The UPS's battery is weak due	Charge the battery. The UPS's
expected back up time.	to recent outage or is near the	batteries require recharging
	end of its service life.	after an extended outage.
		Batteries age faster when put
		into service often and when
		operated at elevated
		temperatures. If the battery is
		near the end of its service life,
		consider replacing the battery
		even if the replace battery
		indicator is not yet lit.
On-line and overload indicators	The UPS was shutdown by	None. The UPS will restart
are flashing alternately.	PowerChute® plus software.	automatically when utility power
		returns.
All indicators are flashing.	Internal UPS fault.	Do not attempt to use the UPS.
		Turn the UPS off and have it
		serviced immediately.
The UPS operates normally,	Building wiring error such as	Have a qualified electrician
but the site wiring fault	missing ground or hot to	correct the building wiring.
indicator is lit.	neutral wire reversal.
On-line and on-battery	Internal UPS fault.	Do not attempt to use the UPS.
indicators only are flashing		Turn the UPS off and have it
		serviced immediately.
All indicators are off and the	The UPS is shutdown and the	None. The UPS will return to
UPS is not operating.	battery is discharged from an	normal operation when the
	extended power outage.	power is restored and the
		battery has a sufficient charge.
The replace battery light is	Weak batteries.	Allow the batteries to recharge
illuminated.		for at least 4 hours. If the
		problem persists after
		recharging, replace the
		batteries.
	Replacement batteries not	Confirm the battery
	connected properly.	connections.
The overload light is	The UPS is overloaded.	Reduce the load on the UPS
illuminated or flashing		by unplugging equipment.

For Computer Interface Port Specifications, see the APC Website.

3.Disconnect the two wires connecting the battery to the UPS. Loosen the wires by wiggling them while pulling straight back from the battery connector.

4.Connect the new battery in place of the old.

Note: Small sparks at the battery connections are normal during connection.

5.Place the new battery in the UPS. Use care to avoid pinching the wires.

6.Close the battery compartment door and replace the screws.

7.Dispose of the old battery properly at an appropriate recycling facility or return it to the supplier in the packing material for the new battery. See the new battery instructions for more information.