2 Installation CPI Canada Inc.
Refer to Figure 9A and Figure 9B to install the HV cables:
1. Remove the dust caps that cover the HV (High Voltage) sockets on the HVM (high voltage
module).
2. Check for debris inside the HV (ANODE and CATHODE) Sockets on the top of the HVM. If
there is any debris found inside the sockets, it must be carefully removed.
3. Verify that the Plug Bodies are in good condition i.e., no cracks. The contact pins must be
sufficiently opened to make good contact with the mating connectors inside the HV Socket.
4. Carefully clean the Plug Bodies of the HV cables by using dry lint-free paper towels.
5. Apply a thin coat of moisture-dissipating grease to each Plug Body.
6. Carefully clean the HV sockets by using dry lint-free paper towels.
7. Carefully observe the polarity (ANODE and CATHODE) for the HV Sockets and HV cables.
8. To connect the HV cables:
a) In the ANODE (+) HV Socket, first identify the Slot in the socket and visually align it with
the Key on the ANODE Plug Body as shown in Figure 9B. Then insert and push the Plug
Body into the socket until it is firmly seated.
b) In the CATHODE (-) HV Socket, first identify the Slot in the socket and visually align it
with the Key on the CATHODE Plug Body as shown in Figure 9B. Then insert and push
the Plug Body into the socket until it is firmly seated.
WARNING: THE METHOD, DESCRIBED IN THE NEXT STEP, OF HOW TO TIGHTEN THE
THREADED RINGS TO THE HV SOCKETS MUST BE PERFORMED BY HAND
ONLY. USE OF MECHANICAL TOOLS SUCH AS A WRENCH MAY RESULT
IN OVER-TIGHTENING, WHICH MAY ROTATE THE HV SOCKET. THIS
ROTATION MAY SERIOUSLY DAMAGE THE HIGH VOLTAGE MODULE
(HVM) OR THE X-RAY GENERATOR.
9. Use the method described below to tighten the two Threaded Rings to the two HV Sockets.
NOTE: A SUBSTANTIAL AMOUNT OF FORCE IS NEEDED TO SECURE THE
THREADED RING OF THE HV CONNECTORS INTO THE HV MODULE
INTERFACE. THERE IS A RISK OF MUSCLE STRAIN. AVOID AWKWARD
POSTURE AND PRACTICE SOUND ERGONOMIC PROCEDURES WHEN
PERFORMING THIS TASK.
a) Tighten the Threaded Rings by hand only and ensure there is no gap between the
Threaded Ring and the HV Socket, but do not over tighten.
b) Using a hex key (1.5 mm), tighten the Set Screw, which will secure the Threaded Ring and
ensure a good contact between the HV cable and the HVM.
10. After verifying normal X-ray generator operations, re-tighten the Threaded Rings connecting
to the HV Sockets and the X-ray tube.
Use and disclosure is subject to the restrictions on the title page of this CPI document.
Page 2-16 CMP 200
X-Ray Generator Service Manual Ch # 901476-02 Rev. P
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