GE AMX-II

GENERAL
ELECTRIC
MEDICAL
SYSTEMS
AMX-il
X-RAY
UNIT
6-978
10.
11.
12.
13.
NOTE:
14.
15.
16.
17.
18.
19.
20.
SM A 0654E
Re-energize charger. Adjust AC input voltage for a charger current no more than 3.0 DC amps.
After 10 minutes into charging period check voltage of each cell using digital voltmeter. Voltage
should be between 1.2 and 1.55 volts. If any cell is outside this range stop charging procedure and
replace the cell group under terms of warranty. If a cell group is replaced, start over at Step 1 of
this section.
For protection, place the furnished red insulating boards over the top of the battery. Temporarily
secure with masking tape. :
Record charge input current at 1/2 hour intervals. Adjust AC input up to a maximum of 125 volts
to maintain DC charge current between 2.0 and 3.0 amps.
This charge procedure may be discontinued overnite without having to begin at Step 1 the
following day. Turn charger ON and continue with readings as per Step 13.
Continue charging and recording on 1/2 hour intervals for a maximum of 8.0 hours from the inita-
tion of Step 10 - or until a battery voltage of 131 to 132 V is achieved - whichever comes first. If
8.0 hours, continue with Step 15. If 131 volts, skip to Step 16.
At the end of 8.0 hours from Step 10 with battery voltage less than 131 V; adjust line voltage
for a reduced charge current of 1.3 amperes. Continue at this rate, recording on 1/2 hour intervals,
until a battery voltage of 131 to 132 is realized.
When battery voltage reaches 131 to 132 V, slowly adjust 441R30 clockwise until the charger stops
and
the charge complete lamp lights.
Turn OPERATOR'S KEY switch and Main Power Circuit Breaker OFF. Disconnect charger plug
from wall outlet. Move the white lead from 4A1-2 to 4A1-17 and the black lead that goes to 4 CR5
bridge from 4A1-8 to 4A1-18. If the charger board does not have terminals 4A1-17 and 4A1-18
connect a jumper (No. 16 AWG wire or larger capable of carrying 3 amps) across terminal 4A1-2.
This by-passes 4CR6 to allow battery charging even though the automatic cut-off has shut off 4CR6.
Connect the battery charger plug to variable autotransformer in AC line. Turn OPERATOR’S KEY
switch to CHARGE and main power circuit breaker on ON.
Adjust variable autotransformer in AC line for a charge current of 1.3 amperes.
Continue charging and recording change current on 1/2 hour intervals until a total of 21.0 ampere-
hours is accrued. During this overcharge i .terval battery voltage should rise from 131 to a minimum
of 135 volts. Adjust AC line input to maintain 1.3 ampere charging current.
When 21.0 ampere hours is accrued, and with battery still on charge, measure voltage of each cell
with digital voltmeter. All cells shall read at least 1.50 volts. Record individually all voltages in
Battery Service Log F3560. If any cell reads less than 1.50 voits that cell group should be replaced
following established warranty procedures. Use F 3560 for record information.
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