Sealey TA320 - Manual (Page 28)

Maintenance
WARNING: To avoid electric shock, disconnect the test leads from
any source of voltage before removing the back cover or the battery
or fuse covers.
WARNING: To avoid electric shock, do not operate your meter until
the battery and fuse covers are in place and fastened securely.
This Meter is designed to provide years of dependable service, if the
following care instructions are performed:
1. KEEP THE METER DRY. If it gets wet, wipe it dry immediately.
2. USE AND STORE THE METER IN NORMAL TEMPERATURES.
Temperature extremes can shorten the life of the electronic parts
and distort or melt plastic parts.
3. HANDLE THE METER GENTLY AND CAREFULLY. Dropping it
can damage the electronic parts or the case.
4. KEEP THE METER CLEAN. Wipe the case occasionally with a
damp cloth. DO NOT use chemicals, cleaning solvents, or
detergents.
5. USE ONLY NEW BATTERIES OF THE RECOMMENDED SIZE
AND TYPE. Remove old batteries so they do not leak and
damage the unit.
6. IF THE METER IS TO BE STORED FOR A LONG PERIOD OF
TIME, the batteries should be removed to prevent damage to the
unit.
BATTERY INSTALLATION
WARNING: To avoid electric shock, disconnect the test leads from
any source of voltage before removing the battery cover.
1. Turn power off and disconnect the test leads from the meter.
2. Open the rear battery cover by removing 4 screws using a cross
head screwdriver.