Guest 28003, 28008, 28005 Owner's Manual

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Mobility Charger Series

OWNER’S MANUAL

OFF BOARD BATTERY CHARGERS

Models Amperage Volts
28003 3 Amps 24
28005 5 Amps 24
28008 8 Amps 24

See Connection diagrams for warnings.

IMPORTANT NOTICE

This manual contains important safety and operating instructions for the charger. Read
the entire manual before using. Also read all instructions and cautions for and on the
charger, batteries and equipment in the vicinity of the batteries.

SAVE THESE INSTRUCTIONS

1. INTRODUCING THE CHARGER

The Guest model 28003, 28005 AND 28008 are designed to both recharge your
batteries, and extend your battery’s life in applications where it is stored for long
periods of time. They are “3-stage” electronic, completely automatic, lightweight, silent,
battery chargers and each output produces 24 Volts DC at either a full 3, 5 or 8 Amps
(model specific), while using much less AC current than other charger types. Unlike
automotive “trickle” chargers, the 28003, 28005 and 28008 will not boil off the
electrolytes in properly installed and maintained batteries. The red and green LED’s,
mounted on the charger face, let you know the unit is recharging and maintaining your
batteries. This sophisticated device is designed to recharge and maintain the 24VDC
batteries in you wheelchair or scooter.

SAVE THESE INSTRUCTIONS

WARNINGS

THIS CHARGER SHOULD BE USED TO CHARGE ONLY 24VDC LEAD ACID OR
GEL CELL TYPE BATTERY SYSTEMS. USE ON OTHER BATTERY TYPES MAY
EXPLODE AND CAUSE PERSONAL INJURY.

RISK OF EXPLOSIVE GASES! WORKING IN THE VICINITY OF LEAD ACID
BATTERIES IS DANGEROUS. BATTERIES GENERATE EXPLOSIVE GASES
DURING NORMAL OPERATION. THEREFORE IT IS OF THE UTMOST
IMPORTANCE THAT EACH TIME BEFORE USING YOUR CHARGER YOU
FOLLOW THE INSTRUCTIONS EXACTLY.

Personal Safety Precautions

Adhere to the following personal safety precautions when installing or working with the
chargers:

1.

Someone should be within voice range or close enough to come to your aid when
you work near a lead-acid battery.

2.

Have plenty of fresh water and soap nearby in case battery acid contacts skin,
clothing, or eyes.

3.

Wear complete eye protection and clothing protection. Avoid touching eyes while
working near a battery.

4.

If battery acid contacts skin or clothing, wash them immediately with soap and
water. If acid enters the eye, flood the eye with cold, running water for at least ten
minutes and get medical attention.

5.

Never smoke or allow an open flame in the vicinity of the battery.

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6.

Do not drop a metal tool onto the battery. It may spark, short circuit the battery and
may cause an explosion.

7.

Remove all personal metal items such as rings, bracelets, necklaces, and watches
when working near a lead-acid battery. A battery can produce short circuit currents
high enough to weld a ring or the like to metal, causing a severe burn.

Preparing to Charge Precautions

Before charging a battery with the charger, read the following precautions:

1.

Do NOT operate the charger if the cables or an LED is damaged.

2.

Make sure all accessories on the product you are charging are OFF.

3.

Be sure the area around the battery is well ventilated while the battery is being
charged. Gas can be forcefully blown away using a piece of cardboard or other
non-metallic material as a “hand fan”.

4.

Add distilled water in each cell until battery acid reaches levels specified by the
battery manufacturer, if applicable. Do not overfill. For all batteries, carefully follow
the manufacturer’s recharging instructions.

5.

Never allow the ring terminals to touch each other.

6.

NEVER charge a frozen battery.

7. Please be sure the DC system to which the charger is connected is not drawing
excessive current from the battery for extended periods of time while the charger is
operating. This is important to ensure the charger correctly transitions through each
charging stage to finish with the float voltage level. If the DC system is drawing
continuous current while charging, reduced life or damage to the battery may occur.

AC Connection and Grounding Precautions

DANGER

DO NOT OPERATE THIS CHARGER WITH A TWO BLADED ADAPTER PLUG OR
EXTENSION CORD. DOING SO CAN RESULT IN SERIOUS PERSONAL INJURY.

AFTER SECURING THE BATTERY CONNECTIONS, PLUG THE AC LINE CORD
INTO AN AVAILABLE AC OUTLET THAT IS PROTECTED BY A GROUND FAULT
CIRCUIT INTERRUPTER (GFCI) BREAKER.

CAUTION: To reduce the risk of shock, connect only to a properly grounded outlet.
NOTE: AC Line Cord color coding is EU style. Line = Brown, Neutral = Blue, Ground =

Green

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