Associated Equipment BCH7112 User Manual

MODEL BCH7112

OPERATOR'S MANUAL

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS. This manual contains important safety and operating instructions for battery charger Model BCH7112.

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You may need to refer to these instructions at a later date.

2. CAUTION. To reduce risk of injury, charge only wet cell, lead-acid, automotive type rechargeable batteries. Other types of batteries may
burst causing personal injury and damage.

3. Do not expose the charger to rain or snow if specifically warned on the unit not to do so.

4. Use of an attachment not recommended or sold by the battery charger manufacturer may result in a risk of fire, electric shock, or injury to
persons.

5. To reduce the risk of damage to the electric plug and cord, pull by the plug rather than the cord when disconnecting the charger.

6. Make sure the cord is located so that it will not be stepped on, tripped over, or otherwise subjected to damage or stress.

7. An extension cord should not be used unless absolutely necessary. Use of a improper extension cord could result in a risk of fire and electric
shock. If an extension cord must be used, make sure:
a. That the pins on the plug of extension cord are the same number, size, and shape as those of the plug on the charger;
b. That the extension cord is properly wired and in good condition; and
c. That wire in cord is proper size as follows: Minimum recommended AWG wire size for various length extension cords used with this

charger:

Do not operate the charger with a damaged cord or plug, replace them immediately.

8.
Do not operate the charger if it has received a sharp blow, been dropped, or otherwise damaged in any way; take it to a qualified serviceman.

9.
Do not disassemble the charger, take it to a qualified serviceman when service or repair is required. Incorrect reassembly may result in risk of

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electric shock or fire.
To reduce the risk of electric shock, unplug the charger form the outlet before attempting any maintenance or cleaning. Turning off the controls

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will not reduce this risk.

Length of Cord, Feet 25 50 100 150
AWG Size 18 18 16 14

WARNING - RISK OF EXPLOSIVE GASES

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a. WORKING IN VICINITY OF A LEAD-ACID BATTERY IS DANGEROUS. BATTERIES GENERATE EXPLOSIVE GASES DURING NORMAL

BATTERY OPERATION. FOR THIS REASON IT IS OF UTMOST IMPORTANCE THAT EACH TIME BEFORE USING YOUR CHARGER, YOU
READ THIS MANUAL AND FOLLOW THE INSTRUCTIONS EXACTLY.

b. To reduce the risk of battery explosion, follow these instructions and those published by the battery manufacturer and manufacturer of

any equipment you intend to use in vicinity of the battery. Review cautionary markings on these products and on the engine.

13. PERSONAL PRECAUTIONS
a. Someone should be within range of your voice or close enough to come to your aid when you work near a lead-acid battery.
b. Have plenty of fresh water and soap nearby in case battery acid contacts skin, clothing, or eyes.
c. Wear complete eye protection, and clothing protection. Avoid touching eyes while working near battery.
d. If battery acid contacts skin or clothing, wash immediately with soap and water. If acid enter eyes, immediately flood eyes with running

cold water for at least 10 minutes and get medical attention immediately.
e. NEVER smoke or allow a spark or flame in vicinity of the battery or engine.
f. Be extra cautious to reduce risk of dropping a metal tool onto the battery. It might spark or short circuit the battery or other electrical parts

that may cause an explosion.
g. Remove personal metal items such as rings, bracelets, necklaces, and watches when working with a lead-acid battery. A lead-acid

battery can produce a short circuit current high enough to weld a ring or the like to metal, causing a severe burn.
h. Use this charger for charging a LEAD-ACID battery only. It is not intended to supply power to a low-voltage electrical system other than in

an automotive application. Do not use this battery charger for charging dry-cell batteries that are commonly used with home appliances.

These batteries may burst and cause injury to persons and damage to property.
i NEVER charge a frozen battery.

PREPARING TO CHARGE

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a. If necessary to remove battery from vehicle to charge, always remove the grounded terminal from the battery first. Make sure all

accessories in the vehicle are off, so as not to cause an arc.

b. Be sure the area around the battery is well ventilated while the battery is being charged. Gas can be forcefully blown away by using a

piece of cardboard or other non-metallic material as a fan.
c. Clean the battery terminals. Be careful to keep corrosion from coming in contact with eyes.
d. Add distilled water in each cell until battery acid reaches level 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.

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e. Study all battery manufacturer's specific precautions such as removing or not removing the cell caps while charging and the recommended

rates of charge.
f. Determine voltage of the battery by referring to the car owner's manual and make sure that the output voltage selector switch is set at the

correct voltage. If the charger has adjustable charge rate, charge the battery initially at the lowest rate.

CHARGER LOCATION

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a. Locate the charger as far away from the battery as the DC cables permit.
b. Never place the charger directly above the battery being charged; gases from the battery will corrode and damage the charger.
c. Never allow battery acid to drip on the charger when reading the specific gravity or filling battery,
d. Do not operate the charger in a closed-in area, or restrict ventilation in any way.
e. Do not set a battery on top of the charger.

OPERATING INSTRUCTIONS

CHARGER CONTROLS
Charge Selector Switch: Allows for selection of one of three different operations.

1. 12 VOLT - 2 AMP CHARGE: Best for small batteries used in motorcycles, garden tractors, etc.
2 12 VOLT - 10 AMP CHARGE: Charges all larger 12 volt batteries at 10 Amps. Output will drop as charge builds and battery voltage

increases.

3. 12 VOLT ENGINE START: - (12 volt electrical systems only) On this setting the charger will provide up to 50 amps additional current to aid

in engine starting. Due to the very high currents involved, the charger must be allowed to cool for two to three minutes after ten seconds

of steady engine start cranking.
CHARGER OVERLOAD PROTECTION
The BCH7112 battery charger is protected from power overload by two automatic heat sensing switches. One is in the DC output circuit, the

other is built on the transformer. The first will operate when a short circuit, reverse connections, or too long engine cranking, overloads the
charger. The protector will open with a click sound and will close in a few seconds. The seconds protector will operate when a prolonged
overload due to a defective battery or other excessive load causes the transformer to overheat. It will close after several minutes when the
transformer cools.

DC CONNECTION PRECAUTIONS

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a. Connect and disconnect the DC output clamps only after removing the AC cord from the electric outlet. Never allow the clamps to touch

each other.

b. Attach the DC clamps to the battery post and twist or rock back and forth several times to make a good connection. This tends to keep the

clamps from slipping off the terminals and helps to reduce the risk of sparking.

17. FOLLOW THESE STEPS WHEN THE BATTERY IS INSTALLED IN A VEHICLE. A SPARK NEAR THE BATTERY

MAY CAUSE A BATTERY EXPLOSION. TO REDUCE THE RISK OF A SPARK NEAR THE BATTERY:

a. Position the AC and DC cords to reduce the risk of damage by the hood, door, or moving engine parts.
b. Stay clear of fan blades, belts, pulleys, and other parts that can cause injury to persons.
c. Check the polarity of the battery post. The POSITIVE (POS, P, +) battery post usually has a larger diameter than the NEGATIVE (NEG, N, -)

post.

d. Determine which post of the battery is grounded (connected) to the chassis. If the negative post is grounded to the chassis (as in most

vehicles), see item "e". If the positive post is grounded to the chassis, see item "f".

e. For negative-grounded vehicles, connect the POSITIVE (RED) clamp from the battery charger to the POSITIVE (POS, P, +) ungrounded post

of the battery. Connect the NEGATIVE (BLACK) clamp to the vehicle chassis, heavy gauge metal part of the frame, or engine block, away
from the battery. Do not connect to the carburetor, fuel lines, or sheet metal body parts.

f. For positive-grounded vehicles, connect the NEGATIVE (BLACK) clamp from the battery charger to the NEGATIVE (NEG, N, -) ungrounded

post of the battery. Connect the POSITIVE (RED) clamp to the vehicle chassis or engine away from the battery. Do not connect the clamp
to the carburetor, fuel lines, or sheet-metal body parts. Connect to a heavy gauge metal part of the frame or engine block.

g. When disconnecting the charger, disconnect the AC cord, remove the clamp from the vehicle chassis, and then remove the clamp from the

battery terminal.

h. See the operating instructions for length of charge information.

FOLLOW THESE STEPS WHEN THE BATTERY IS OUTSIDE THE VEHICLE. A SPARK NEAR THE BATTERY MAY

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CAUSE BATTERY EXPLOSION. TO REDUCE THE RISK OF A SPARK NEAR THE BATTERY:

a. Check the polarity of the battery post. The POSITIVE (POS, P, +) usually has a larger diameter than the NEGATIVE (NEG, N, -) post.
b. Attach at least a 24 inch long 6-gauge (AWG) insulated battery cable to the NEGATIVE (NEG, N, -) battery post.

c. Connect the POSITIVE (RED) charger clamp to the POSITIVE (POS, P, +) post of the battery.
d. Position yourself and the free end of the cable as far away from the battery as possible, then connect the NEGATIVE (BLACK) charger

clamp to the free end of cable.
e. Do not face the battery when making the final connection.
f. When disconnecting the charger, always do so in reverse sequence of connecting procedure, and break the first connection while

standing as far away from the battery as practical.
g. A marine (boat) battery must be removed and charged on shore. To charge it on board requires equipment specially designed for marine

use.

19. VEHICLES WITH TWO BATTERIES

Many diesel vehicles and service vehicles are equipped with two batteries. This is to provide the vehicle with greater starting power capacity

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