Heico EMD Epsilon EPS 45-80, Техническое руководство

Страница: 183 / 262

7. Troubleshooting & Servicing
Technical Manual P/N 9894.00.G6 7-3
7.1 WARNING
This equipment must be serviced by trained
personnel only, and using the utmost care.
Dangerous and lethal potentials are present in
offline circuits in several places of this unit!
High voltage, AC line-connected potentials are present in numerous circuits.
Even when the generator is switched off at the operator console, mains voltages are still present in
High-Voltage Power Supply unit. These voltages are extremely dangerous, use the utmost caution.
7.2 EXPOSURE INHIBITION
7.2.1 Exposure Limits
Exposure inhibit conditions occur when technique parameters exceed the limit of the X-ray tube or
of the generator. The “Limits LED” turns on for the duration of the condition, and a specific
message displays in the graphic screen. The message stays on until the technique factors are
sufficiently reduced by the operator and the limit condition lifted.
7.2.2 Interlock Conditions
Workstations have their own set of programmable interlocks to prevent unsafe exposure. An
interlock condition always results in the invalidation of the exposure process.
Interlock conditions are apparent by the lighting of
the interlock lamp and by the display of an interlock
message on the operator console (Figure 7.1).
Interlocks are determined as a function of which
exposure state the interlock is intended to control for
a given workstation. Four (4) generator states are
possible.
Make sure the programming of the interlock(s) was
done correctly as per Chapter 4.
Figure 7.1 –
Fault (left) and Interlock (right) conditions in RAD