Sec. 1 INTRODUCTION
Congratulations. You have purchased an A.W. SPERRY
Analog Multimeter manufactured to the highest quality
standards. A minimum amount of maintenance and an
understanding of these operating instructions is all that is
needed to keep this instrument in excellent working
condition. If you should have any questions regarding this
product or would like a catalog on our other products please
write to us at:
A.W. Sperry Instruments, Inc.
P.O. Box 9300
Smithtown, NY 11787
or call us Toll-Free at
800-645-5398 or 516-231-7050
Please take the time to read these operating instructions
thoroughly and completely. Failure to follow these
instructions may result in electrical shock, instrument
damage and/or damage to the equipment under test.
Always use extreme caution when working on or around
electrically operated equipment.
Sec. 2 SAFETY PRECAUTIONS
Always inspect the instrument, test leads and other
accessories for damage prior to every use.
Always consider electrical and electronic equipment to be
energized (live). Never assume any equipment is de-
energized.
Never ground yourself when taking electrical
measurements. Isolate yourself from ground by using dry
rubber insulation mats to cover all exposed grounded metal.
Stand on rubber mats and wear dry clothing.
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2. Turn instrument upside down and lay on a soft flat
surface which will not scratch the scale window.
3. Remove the phillips head screw and lift off the
back case.
4. Remove the battery by prying up near the center of
the battery using a coin.
5. Replace the battery with a new 1.5 Vdc, AA size
battery, A.W. SPERRY part B-1. When installing
the battery make sure the polarity matches that
indicated in the battery compartment.
6. Replace the back cover by sliding the end with the
small tab in first. Then replace the phillips head
screw and tighten to a snug fit. Do not over tighten
screw.
6-2) Fuse Replacement
1. Follow steps 1-3 in Section 6-1.
2. Remove the fuse and replace with a miniature
glass type fuse, 1/2 Amp, 250V, 1/4" X 11/4",
A.W. SPERRY Part #F-1 or approved equal.
CAUTION
Do not short fuse out of the circuit, or use a fuse with higher
rating than 1/2 Amp, or alter circuit to eliminate the fuse. These
actions negate the safety purpose of the fuse, can cause
extensive damage to the instrument and/or injury to the user.
6-3) Cleaning
The exterior of the instrument can be cleaned with a soft dry
cloth to remove any oil, grease or grime. Never use any
liquid solvents or detergents. Do not polish the instrument.
If the instrument gets wet for any reason, dry the inside and
outside of the instrument using low pressure air, less than
25 PSI.
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