I
NSTRUCTIONS FOR:
WORKSHOP VOLT/AMP METER 9 FUNCTION
MODEL:
BT91/5.V3
Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used according to these instructions and properly maintained,
give you years of trouble free performance.
1. SAFETY INSTRUCTIONS
IMPORTANT:
PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS AND CAUTIONS. USE THE PRODUCT
CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR PERSONAL INJURY AND WILL
INVALIDATE THE WARRANTY. PLEASE KEEP INSTRUCTIONS SAFE FOR FUTURE USE.
DANGER! BE AWARE, LEAD-ACID BATTERIES GENERATE EXPLOSIVE GASES DURING NORMAL BATTERY OPERATION.
FOR THIS REASON IT IS VERY IMPORTANT TO READ AND FOLLOW THESE INSTRUCTIONS CAREFULLY EACH TIME
YOU USE THE VOLTMETER/AMMETER.
Follow these instructions and those published by the battery and vehicle manufacturers and the maker of any equipment you intend
to use in the vicinity of the battery. Remember to review warning marks on all products and on engines.
The BT91/5 is a steel cased Voltmeter/Ammeter designed to accurately check battery, alternator and feed voltage, voltage drops, earth contacts,
electrical system shutdowns and battery condition. It has two large meter read-outs and is supplied with two pairs of leads with crocodile clips
and full operating instructions. Optional trolley available - Sealey Model BT91/6.
3. OPERATION
2. INTRODUCTION
fig. 1
1.1.
PERSONAL PRECAUTIONS
3
Ensure that there is another person within hearing of your voice and close enough to come to your aid
should a problem arise when working near a lead-acid battery.
3
Wear safety eye protection and protective clothing. Avoid touching eyes while working near battery.
3
Have fresh water and soap nearby in case battery acid contacts skin, clothing or eyes.
3
Wash immediately with soap and water if battery acid contacts skin or clothing. If acid enters eye,
flush eye immediately with cool, clean running water for at least 15 minutes and seek immediate medical attention.
3
Remove personal metallic items such as rings, bracelets, necklaces and watches. A lead-acid battery can produce a short-circuit current
which is high enough to weld a ring or the like to metal, which would cause severe burns.
3
Ensure hands, clothing (especially belts) are clear of fan blades and other moving or hot parts of engine, remove ties and contain long hair.
7
DO NOT
smoke or allow a spark or flame in the vicinity of battery or engine.
1.2. GENERAL SAFETY INSTRUCTIONS
3
Familiarise yourself with the application, limitations and potential hazards of the meter. Also refer to the vehicle manufacturers handbook.
IF IN ANY DOUBT, CONSULT A QUALIFIED VEHICLE TECHNICIAN.
3
Ensure that the voltmeter/ammeter is in good condition before use. If in any doubt do not use the unit and contact an electrician.
3
Use only recommended attachments and parts. The use of unauthorised items may be dangerous and will invalidate your warranty.
3
Keep tools and other items away from the engine and ensure that you can see the battery and working parts of the engine clearly.
3
If the voltmeter/ammeter receives a sharp knock or blow it must be checked by a qualified service agent before being used.
3
If the battery terminals are corroded or dirty, clean them before attaching the clamps.
3
Keep children and unauthorised persons away from the work area.
7
DO NOT
disassemble the voltmeter/ammeter for any reason. The voltmeter/ammeter must only be checked by qualified service personnel.
p
WARNING!
To prevent the risk of sparking, short circuit and explosion
DO NOT
drop metal tools in the battery area, or allow them to touch
the battery terminals.
7
DO NOT
cross-connect leads from voltmeter/ammeter to battery. Ensure positive (+/RED) is to positive and negative (-/BLACK) is to
negative. If the symbols cannot be distinguished, remember that the battery negative terminal is normally the one directly connected to the
vehicle bodywork.
7
DO NOT
pull the cables or clamps from the battery terminals.
7
DO NOT
use the voltmeter/ammeter outdoors, or in damp, or wet locations and
DO NOT
use in the vicinity of flammable liquids or gases.
3
Ensure that there is effective ventilation to prevent a build-up of explosive gases.
7
DO NOT
use the voltmeter/ammeter for a task for which it is not designed.
3
When not in use, store the voltmeter/ammeter carefully in a safe, dry, childproof location.
p
WARNING!
Ensure that you read, understand and apply the safety
and operational instructions before connecting the voltmeter/ammeter.
Only when you are sure that you understand the procedures is it
safe to proceed with testing.
Note: Numbers in brackets refer to items indicated in fig.1.
3.1.
BATTERY VOLTAGE TEST
3.1.1. Turn off the vehicles engine and remove the keys.
3.1.2. Clean battery terminals.
3.1.3. Set the corresponding scale on the voltmeter in accordance with the
battery voltage, using the switch (4).
3.1.4. Connect the red clamp (7) to the positive (+) terminal and the black
clamp (7) to the negative (-) terminal of the battery.
3.1.5. The voltmeter (3) will display the voltage.
BT91/5.V3 - 1 - 161105
1
2
3
4
5
6
7
3.1.6. A voltage level less than 5V, 10V and 20V for 6V, 12V and 24V batteries respectively, is evidence that the battery is run down.
3.2.
ALTERNATOR VOLTAGE TEST
3.2.1. Set the corresponding scale on the voltmeter using the switch (4).
3.2.2. Connect the red clamp (7) to the positive (+) terminal and the black clamp (7) to the negative (-) terminal of the battery.
3.2.3. Observer the reading on the voltmeter (3).
3.2.4. Start the vehicles engine and maintain its speed at 2000rpm. You should notice an increase in voltage to between 13.5V and 14.5V
for 12V vehicles and to between 27V and 29V for 24V vehicles. A voltage higher than 15V or 30V respectively indicates a faulty regulator.
