APX 525/625 Generator Revision C Periodic Maintenance
©
2005 Del Medical Imaging Corporation
7/5/2005 Page 199
PERIODIC MAINTENANCE
General Notes
The following routine maintenance should be performed 30 days after installation and
semi-annually thereafter. This inspection must be carried out by trained service
personnel familiar with the equipment and maintenance procedures.
Warning: The main SCR capacitor bank (bottom of power module) contains a very
high charge when power is applied. This charge is a fatal shock hazard. After power
has been disconnected from the system, either by line disconnect or control console
power off, allow a minimum of five minute for capacitor bank to discharge. Check the
capacitor bank charge for zero volts with a dc volt meter before working on any
internal circuitry.
TEST EQUIPMENT REQUIRED
• Digital Multimeter (true RMS)
• Dynalyzer™ or kV meter
• Oscilloscope - dual trace storage with algebraic addition capabilities
INSPECTION
1. Clean all exterior surfaces of the control console, power module and high tension
transformer
2. Inspect for loose, broken or missing hardware
3. Inspect all accessible electrical cables for fraying or abrasion
4. Remove high tension cables, clean, re-grease with vapor-proof compound.
Reinsert high tension jacks into federal receptacles. Insure cables are well
seated and pins make good contact. Carefully spread pins with pocketknife, if
necessary, and reseat cables
5. Verify that insert of tube matches tube insert selected in the system installation
file. If it does not, call Del Medical Imaging Technical Support
6. Observe WARNING as hazardous voltages may be present. Turn disconnect off.
Open power module front panel
7. Inspect for loose or corroded connections. Check all circuit boards and wiring
harness plugs to assure they are well seated in their proper receptacles
8. Verify the accuracy of Kilovoltage, mAs, and mA. Calibrate as necessary
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