OPERATOR MAINTENANCE PROCEDURES
The tester uses NICAD rechargeable 4 Ampere Hour D
Size cells as standard batteries.
Do not attempt tester repairs. A faulty tester must be
returned to a designated manufacturer's repair facility.
Due to excessive damage caused by
battery leakage, only NICAD batteries,
NSN 6140-00-497-0490, will be used as
This section applies to basic maintenance to be
replacement. Quantity of eight (8) each
performed by the field operator with a minimum
should be ordered.
of tools and equipment and with a minimum
Maintenance covered by Section III involves only
Charge NICAD batteries only. Do not use alkaline or
the use of common hand tools.
Report any defects with the tester to the LRPO.
The tester requires little maintenance other than an
occasional cleaning of the shutter and replacement of
a. Service problems will occur In three areas:
(2) Mechanical jamming of shutter
(3) Electronic parts failure.
b. CPN testers minimize service problems in
these three areas by careful design: (1) Batteries are
replaceable with NICAD batteries, NSN 6140-00-497-
(2) The shutter mechanism uses a quick release
cleanout plate for ease of cleaning.
(3) Electronics use CMOS circuits for long life
and low current drain.
Figure 3-1. Charging