Kewtech KT64, Инструкция по эксплуатации, Страница: 40 / 44

37
14 . 3 When the display shows the low battery indication, ( ), disconnect
the test leads from the instrument. Remove the battery cover and the
batteries.
14 . 4 If at any time during testing there is a momentary degradation of
reading, this may be due to excessive transients or discharges on
the system or local area. Should this be observed, the test should
be repeated to obtain a correct reading. If in doubt, always contact
Kewtech.
When the display shows the low battery indication, , disconnect the
test leads from the instrument. Remove the battery cover and the batteries.
Replace with eight (
8 ) new 1 . 5 V AA batteries, taking care to observe correct
polarity. Replace the battery cover.
The continuity test circuit is protected by a 600 V 0 . 5 A HRC ceramic type fuse
situated in the battery compartment, together with a spare. If the instrument
fails to operate in the continuity test mode, first disconnect the test leads
from the instrument. Next remove the battery cover, take out the fuse and
test its continuity with another continuity tester. If it has failed, replace it with
a spare, before refitting the battery cover. Do not forget to obtain a new fuse
and place it in the spare position. If the instrument will not operate in the loop
impedance, PSC/PFC and RCD modes, it may be that the protective fuses
fitted on the printed circuit board have blown. If you suspect that the fuses
have failed, return the instrument to Kewtech for service - do not attempt to
replace the fuses yourself.
Fig. 36
RCD
15 Battery
replacement
16 Fuse
replacement