Guest 2722-B Owner's Manual

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MODEL 2722-B

30 AMP, 2 OUTPUTS, 3 STAGE

BATTERY CHARGER

OWNER’S MANUAL

Connections at a glance:

The Guest Model 2722-B charges 2 batteries, as shown below. In agreement with the
American Boat and Yacht Council (A.B.Y.C.), Guest strongly recommends using a 25
Amp fuse in each positive (+) output cable.

1. Charger POS (white wire with fuse)

to battery “ + “.

2. Charger NEG (black wire) to battery “ - ".

3. Plug AC line cord into a GFCI protected
wall socket.

4. Remove connections in the reverse order.

I-27122 Rev E EC 3429

SAVE THESE INSTRUCTIONS

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1. INTRODUCING THE CHARGER

The Guest ChargePro Model 2722-B offers you a unique selection of independent
outputs to economically satisfy all battery combinations normally encountered in the
marine industry. Each product in the series is encapsulated in a waterproof,
shockproof, thermally conductive compound to provide you many years of trouble
free operation in wet and/or corrosive environments.

2. IMPORTANT SAFETY INSTRUCTIONS

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

WARNINGS

THIS CHARGER SHOULD BE USED TO CHARGE ONLY 12-VOLT DC LEAD
ACID OR GEL CELL TYPE BATTERY SYSTEMS. USE ON OTHER THAN A 12
VDC SYSTEM CAN CAUSE THE BATTERY TO 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 UTMOST IMPORTANCE
YOU FOLLOW THESE 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 your
skin, clothing, or eyes.

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

4. If battery acid contacts your skin or clothing, wash them immediately with soap
and water. If acid enters your 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.

I-27122 Rev E EC 3429

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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 input or output cables or an LED is damaged.

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

3. If the battery or batteries must be removed from the product, always remove the grounded
terminal from the battery first.

4. 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”.

5. Clean battery terminals. Be careful to keep corrosion from coming in contact with your eyes.

6. Add distilled water in each cell until battery acid reaches levels specified by the battery
manufacturer. This helps purge excessive gas from cells. Do not overfill. For a battery without
cell caps, carefully follow the manufacturer’s recharging instructions. Check water levels
frequently.

7. Study all battery manufacturer’s precautions.

8. Never allow ring terminals to touch each other.

9. NEVER charge a frozen battery.

10. 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.

Grounding Precaution

DANGER

Do not operate this charger with a two bladed ground adapter plug or extension cord.
Doing so can result in serious personal injury.

CAUTION: To reduce the risk of shock, connect only to a properly grounded outlet.

3. INSTALLING THE CHARGER

Choosing Mounting Location

The charger should have at least eight inches of unobstructed area on all sides of the unit for
effective cooling. The case of this charger will become warm during operation. Do not install onto
a carpeted, upholstered, or varnished surface.

I-27122 Rev E EC 3429