Hioki 3662-20, Instruction Manual, Page: 23 / 40

19
4.1 Battery Replacement
Maintenace and
Service
Chapter 4
Never modify the 3662-20/3663-20. Also, disas-
sembly or repairs must be performed by qualified
service engineers only. Observing these precau-
tions will prevent fire, electrical shock, injury, or
exposure to optical radiation.
4.1 Battery Replacement
• Do not mix old and new batteries, or different
types of batteries. Also, be careful to observe
battery polarity during installation. Otherwise,
poor performance or damage from battery leak-
age could result.
• After replacing the batteries, replace the cover
and screws before using the product.
• To avoid the possibility of explosion, do not short
circuit, disassemble or incinerate batteries.
• Handle and dispose of batteries in accordance
with local regulations.
• To avoid corrosion from battery leakage, remove
the batteries from the product if it is to be stored
for a long time.
• If a optical fiber cable is bent or twisted, this may
result in damage to the cable. Be sure to discon-
nect the optical fiber cable before replacing the
battery.