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9. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY
The [Bold] numbers in the descriptions below correspond to the item numbers in the Model UC 24YJ Parts List
and exploded assembly diagram.
9-1. Disassembly
Remove the four Tapping Screws (W/Flange) D3 x 20 [6], and separate Case (B) Ass'y [5] and Case (A) [2].
9-2. Reassembly
Reassembly can be accomplished by following the disassembly procedures in reverse; however, special attention
should be given to ensure that lamps, cord armor and charging terminals are properly installed in their prescribed
grooves.
9-3. Confirmation after Reassembly
(1) Confirm the following when the battery is fully charged.
• Charge a Ni-MH battery to check that the charge time lamp lights red or orange or green continuously.
• After charging, check that the charge status lamp lights green continuously.
(2) Measure the insulation resistance and conduct a dielectric strength test.
• Insulation resistance: 10 M
Ω
or more between the plug blade of cord and the Name Plate or case fastening
screws, with a DC 500 V megohm tester.
• Dielectric strength test:
(a) Between the plug blade of cord and the charging terminal blade.
(b) Between the plug blade of cord and the name plate or fastening screws on the case.
Based on the voltage listed on the name plate, dielectric strength test should be conducted.
CAUTION: Without fail, insulation resistance must be measured between the plug blade of cord and the
name plate or fastening screws, and dielectric strength test must be conducted between the
plug blade of cord and the charging terminal blade or between the plug blade of cord and the
name plate or fastening screws on the case. Under no circumstances should testing be
conducted between both blades of the plug, or both blades of the charging terminal, which
may cause burn-out of the charger.
Voltage on the name plate
Test voltage
120 V
230 V, 240 V
AC 1,240 V (1 minute)
AC 3,750 V (1 minute)
Summary of Contents for UC 24YJ
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