MasterCraft 052-0726-0 Manuel D'instructions page 21

MAINTENANCE
Except replacing button cells, never attempt to repair or service the
meter unless you are qualified to do so and have the relevant
calibration, performance test, and service instructions.
Periodically wipe the case with a damp cloth and mild detergent. Do
not use abrasives or solvents.
BUTTON CELL REPLACEMENT
When the symbol "
low and must be replaced immediately.
To replace the button cells, remove the screw on the back cover and
remove the back cover. Replace the exhausted button cells with new
ones of the same type (1.5 V button cell, LR44 or equivalent). Make
sure that the polarity connections are correct (see the indication of
the bottom of each button cell compartment). Reinstall the back
cover and the screw.
NOTE:
1. This instruction sheet is subject to change without notice.
2. Our company will not take responsibility for any loss.
3. The contents of this instruction sheet can not be used as the
reason to use the meter for any special application.
All manuals and user guides at all-guides.com
" appears on the display, the button cells are
20