GE AMX-II

GENERAL ELECTRIC MEDICAL SYSTEMS © AMX-II X-RAY UNİT
7-1576 SM AQ654E
3. Remove the cardboard covers from the HV cable ends near the HV Transformer.
4. Make a trial installation of the cable terminals into the transformer receptacles without using ground-
ing rings, rubber gaskets. Orient the strain reliefs upward and slightly outward so that the cables
clear the vertical column.
a Place a little silicon compound on the threads of the rings.
b. Insert the terminal into the receptacle and tighten the ring until the cable strain relief is no
longer free to run. Check that only two or three threads remain exposed on the ring.
5. An HV transient may occur from arcing at the HV receptacles due to improper grounding and/or
air in receptacles. Any time these conditions exist, they can cause HV cable punctures, x-ray failures
or damage to an HV transformer. Therefore, remove the HV cable terminal from the receptacie at
each of the four connection points (two anode and two cathode connections) and carefully follow
the procedure below to make the proper connection.
a. Inspect each receptacle. Use CDX 75-25 cleaning solvent, if necessary, to clean out dirt and
moisture. Dry it with a clean, tintless cloth. :
b. Clean each HV cable terminal using CDX 75-25. Dry it with a clean lintless cloth. Inspect
for correct spread of pin ends. Remove excess solder, if any, on the pins that would prevent
full insertion into the receptacles.
c. Place the tapered rubber gasket over the HV terminal and against the ground shield with small
diameter toward the pins and a notch over the boss.
d. Place a 514A727P1 grounding ring on the cable terminal. When layed on a flat surface, the
grounding ring should have corrugations measuring 3/16” (4.76 mm) minimum to the highest
point. If necessary, bend it to increase the height, otherwise, the contact pressure may be in-
adequate to ground.
e. Coat the end of HV cabie plug with silicon compound* to make a round mound equal to the
height of the pins. Use a clean dry wood stick such as a tongue depressor to spread a thin layer
of silicon compound over the side of the plug. It need not cover the surfaces covered by the
grounding ring.
f. Insert the HV cable terminal into the receptacle guiding the boss of the terminal into the slot
of the receptacle. Press down on the terminal. if the correct quantity of silicon compound
was used, it should ooze up into the space around the grounding ring. Otherwise, remove the
cable terminal and repeat the procedure.
g. Hold the plastic strain relief in the desired position and tighten the threaded ring with a span-
ner wrench. Wipe off the excess silicon compound that has oozed out.
*Use only thessilicon compound furnished with HV cables or procured from National Parts Service or
factory equivalent.
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