GE AMX-II

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-il X-RAY UNIT
1-1880 SM A0654E
SEC. 6 BATTERY
It is assumed that all preceding installation steps have been completed so that there are no unconnected
electrical circuits such as stator or HV cables. The collimator lamp circuit wires remain unconnected as the
collimator is not to be installed until after the x-ray filament check.
Initial charge of battery will be done with battery located on floor next to unit and with operator’s panel
open for voltage and current checks. The procedure will typically take 10-12 hours and require monitoring
every half hour. The total time however, need not be continuous, but may be split over two or more work-
ing days.
6-1 Unpacking and Preparation
1. Review the safety precautions in Section 1-3 before installing the batteries.
Remove rings, metal watch bands and identification bracelets. Metal articles will, if allowed to contact
intercell connectors, fuse themselves to the connectors and cause severe burning. Check pockets for
loose metal objects that could fall across battery intercell connectors. Wear safety glasses and do not
smoke or use an open flame while working near the battery.
2. Locate the unit in a well-ventilated area or room where access can be restricted during the initial charge
© procedure. Setup safety tape to define limited access, hazard area. Post appropriate warning and
caution signs. Obtain and prepare three Battery Service logs F3560.
3. Unpack the three 30-cell groups that comprise the battery and place them on the floor. The battery
does not have a charge. However, a DC meter placed across the input and output terminals of each
cell group will show about 10 to 30 V which may disappear if loaded.
4. Some white powdery potasium carbonate may be found on the battery cells. Excessive accumulation
can cause electrical leakage between cells. Therefore, remove any powdery deposits with a non-metallic
brush or compressed air.
5. The electrolyte in a cell will not be visibie above the baffle when the battery has little or no charge.
Therefore, do not check electrolyte lever until after the battery is charged. Do not add any distilled
water to the electrolyte of an uncharged battery.
6. Battery is shipped with vented caps regardless of color of cap.
7. Wrap tape on a 9/64” hex drive of torque wrench so only the tip is exposed (to avoid shorting the
battery cells if it falls across the terminals). Use it to check tightness of screws fastening the inter-
cell connecting links. Torque value for cell terminals is 3.7 ft. lb. DO NOT OVERTIGHTEN. Use
tool #20 as described at 3-2 of this chapter.
8. Remove the kick panel from the unit shown in illustration 3-8. The panel is anchored by three
screws on top and two on the bottom.
9. Remove the battery retainer plate for access to battery leads.
10.. Double check to make certain that the Main Power Circuit Breaker is OFF.
11. Arrange the three cell groups on floor in front of unit. Space the cell groups several inches ( 150 mm)
apart for air circulation. Keep heat sources such as the lamp load away from the battery.
3-15