Functional And Safety Checks; Prior To The Examination; Monthly Checks; Checking The Dose Rate Control Function - Siemens ARCADIS Varic Operator's Manual

Register 10 Maintenance
ARCADIS Varic
SPR2-310.620.30.02.02

Functional and Safety Checks

To ensure that the ARCADIS Varic is ready for operation and all safety features
are functioning properly, you must perform regular functional and safety checks.
Daily checks

Prior to the examination

Check the power plug. If the power plug is damaged, the ARCADIS Varic must
not be used.
Check the power cable. If the power cable is damaged, the ARCADIS Varic
must not be used.
Check the function of the foot brakes of the C-arm system and the monitor
trolley as well as the steering of the C-arm system.
Check the C-arm counterbalance after releasing the brakes.
Check the function of all radiation indicators.
Inspect the housing of the I.I. and the single tank for mechanical damage.

Monthly checks

Checking the dose rate control function

This following simple procedure allows you to check the automatic dose rate con-
trol function without an object in the beam path. A kV value of ≤ 45 kV must sta-
bilize:
Open the iris and slot diaphragms to maximum aperture.
Press the Dose rate control Stop (ADR Stop) key.
Select 110 kV with the +/- keys.
Press the ADR Stop key again.
– The stop function is canceled; automatic dose rate control is switched on
again.
Release radiation in the fluoroscopy mode.
– The tube voltage is reduced to a value ≤ 45 kV.
– The monitor image is not overexposed.
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