GE AMX-II

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-li X-RAY UNIT
1-1582
21.
22.
SM A0654E
If a cell group is to be replaced after the 21.0 ampere-hour charge, turn unit circuit breaker and
OPERATOR'S KEY switch OFF. |
Disconnect Battery lead terminals to unit and connect 1200 Watt lamp load - consisting of 8-150
Watt 120 V lamps in parailel - across battery. This will discharge entire battery (3 cell group) in
approximately the 1 hour at rate of 13 amperes.
When individual cell voltages discharge to a level of 0.5V or less, place a shorting clip across the
cell terminals. Continue until ail cells are shorted, then remove lamp load. Allow the battery to
discharge for a total of 16 hours with each cell shorted.
Remove the faulty cell group from the battery and replace with a new cell group, repeat the
initial charge from Step 1 of Section 6-2.
Put white lead back on 4A1-2.
Put black lead back on 4A1-8.
Turn OPERATOR'S KEY switch and Main Power Circuit Breaker OFF. Disconnect charger plug
from wall outlet. Turn battery protector adjustment 4A 1-R11 completely counterclockwise. Re-
connect jumper from 4A1-2 to 4A1-19. Connect DVM across the battery plus to minus terminals.
Connect charger cord to wali outlet. Turn Operator’s Key to charge position and main power cir-
cuit breaker on. When battery voltage reaches 135.5 +/- .5V slow turn 4A1-R11 clockwise until
4A1-K16 energizes and blower turns off.
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