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Metro Power III Owner’s Manual GF0600059RevB06, November 2006
25
Warning: Do not use battery chargers not supplied by Graham-Field. Battery char-
gers not supplied by Graham-Field could damage the controller and the battery
charger. Electrical arcing could result, which could cause severe personal injury,
explosion, and fire.
CHARGING THE BATTERIES
Note: Before charging the batteries, read the rest of this manual, especially the Battery Charger sec
-
tions.
Note: As a safety feature, the wheelchair is inoperable during charging.
1. Ensure that power to both wheelchair and battery charger is OFF.
2. Connect the battery charger output connector to the wheelchair battery charger receptacle.
3. North America: Plug the battery charger AC connector into a properly grounded, 115 volt, 60
cycle single phase power outlet. If you are not in North America, check that the battery charger
AC voltage switch is set on the appropriate voltage for your location.
4. Place the battery charger power switch in ON position. e battery charger’s power indicator
LED will illuminate red, the charge indicator LED will illuminate yellow, and the fan will begin
to run.
5. e charge indicator LED may appear to flicker or alternate between green and yellow when the
batteries are nearly finished charging, and the fan may go on and off. e charge-indicator LED
will change to non-flashing green when the batteries are fully charged.
Allow adequate time to bring the batteries up to a full charge—the actual time required to
recharge the batteries will depend on discharge condition. e charger supplied with the wheel-
chair is automatic, and will not damage the batteries if left connected after batteries are fully
charged.
6. When batteries are fully charged, place battery charger power switch in the OFF position.
7. Remove battery charger cable connector from receptacle.
Note: If you have any problems charging the batteries, see Troubleshooting, battery charger in the
TROUBLESHOOTING section. Identify the symptom and follow the steps in order. If you
are unable to resolve the problem, contact your Graham-Field dealer.