Sunrise Medical G-424 instruction manual Introduction, Battery Charger

X . O P E R A T I N G G U I D E

7.Remote Switch Jacks (optional– not shown)

Two 1/8" switch jacks are optional to provide remote switch control of the on/off power function and the mode select function. Any of the single switches offered by Sunrise Medical can be used to connect to either or both of these jacks (except the single zero touch switch).

1.Never use the ON/OFF switch to stop your chair except in an emergency. This will result in an abrupt stop, and may cause you to fall.

2.To slow or stop your chair, return the joystick to neutral.

G. MOTOR LOCKS

Disconnect the motor locks when you need to manually push the chair. (For example, in an emergency, or if batteries fail).

1.Do not disengage motor locks unless power to the chair is off.

2.With either one or both brakes released, the chair will not operate and the battery charge indicator will flash 9 bars rapidly (if power to the chair is on.)

3.Be aware that the chair will not have brakes in the free-wheel position.

4.Make sure that the person pushing the chair has full control when motor locks are disengaged.

X I . B A T T E R I E S

A.INTRODUCTION

1. Notes:

•Batteries supply the power for your chair.They contain a finite amount of energy and have limits on how long they can store and supply energy.

•You can charge batteries only a certain number of times before they will fail and no longer hold a charge.

•For answers to questions about batteries, consult your supplier.

2.	Use Proper Batteries:
	Your chair operates on two 12 volt batteries.
	• They should be GP 24 or 22NF size with a minimum of 40 ampere hour
	rating. Only deep cycle sealed case construction batteries should be used
	in this device.
	• When you buy a replacement, insist on a deep cycle sealed case. Do not
	use a car starter battery.
3.	Breaking In:
	• A battery requires “breaking-in” for the first 6 to 12 charges. It will not
	accept a full charge for this period.
	• It is best to limit the length of your trips until you break the batteries in
	and you know the range of your chair.
4.	Discharged Batteries:
	• Never allow a battery to completely discharge. If you operate your
	wheelchair until it has almost stopped, you will greatly reduce the life of

1.Release Motor Locks

Push the brake releases upward (A).

2.Engage Motor Locks

Push the brake releases downward (A).

A

	your batteries.
•	Never let a battery sit in a discharged condition. Give unused or stored
	batteries a full charge once per month.
•	Always fully charge the batteries. Avoid “topping off” with
	frequent charges.

Never connect a life support or auxiliary device to a wheelchair battery.The electrical system may fail and result in severe injury to or death of rider.

B. BATTERY CHARGER

A battery charger produces a direct current (DC).When applied to a discharged battery, this reverses the chemical reaction that led to its discharge.

1.Charge Rate. How fast a battery will charge depends on:

•Its electrical capacity, state of charge, electrolyte temperature, and internal condition.

•The DC output of the charger. (The charge rate will vary if the alternating current (AC) supply is higher or lower than 110 volts).

2.Caution — To Avoid Damage to the Charger:

•Never place the charger on top of a battery during charging. (Gases from the battery can damage the charger and may lead to an explosion or fire).

•Never place a battery on top of the charger.

930484 Rev. A 40 41 930484 Rev. A