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7. Periodically review
Section 2.1 Radiation Safety
and
Section 2.2 Studies and Data on
Leakage and Scatter
in order to become reacquainted with safety precautions, which
include designating a Significant Zone of Occupancy and understanding exposure
information near the unit.
Annual Maintenance:
Observe the following steps for annual maintenance of the KaVo
NOMAD PRO 2.
1. Verify that the
Power
button is working properly. When the device is powered on, the
display should illuminate and an indicator alarm should sound.
2. Verify that the device is in lock mode when the
Patient
and
Select
buttons are
pressed simultaneously. Repeat the process to unlock the device. Verify that the device
is unlocked.
3. Verify that, when left on for a period of approximately three minutes without pressing
any buttons, the device automatically shuts off.
4. With the device powered on and unlocked, verify that a time selection value displays
on the user interface panel. Also check the function of the
Increase
and
Decrease
buttons. Pressing the buttons should cause the time setting to adjust
accordingly.
5. Verify that the trigger moves freely in and out when depressed and released.
6. Verify that a single pull and release of the trigger enables the X-rays and the device
moves into the Ready state.
7. Verify that the backscatter shield is firmly attached to the collimator cone and that it is
not cracked or broken.
8. Select an exposure of 1.00 second using the time exposure buttons. Initiate an
exposure, but release the exposure switch after a brief period of time before the timer
terminates the exposure. Verify that the exposure terminates immediately upon release
of the trigger.
9. While taking the exposure, verify that the
X-Rays On
LED illuminates and the audible
signal is heard.
10. Ensure that the operator of the system has received a copy of the operator manual.
• The KaVo NOMAD PRO 2 should not be operated if it has been dropped, if housing
is broken, if performance degrades, or if the backscatter shield has been broken or
compromised in any way; it should be returned to KaVo for an evaluation.
• For long-term storage, it is recommended to charge batteries at least 2/3 every 3
months.
The KaVo NOMAD PRO 2, the handsets, and the charging cradle are NOT designed
to be user-serviceable. There are dangerous voltages inside. Do not open the device,
handset, or charger housing doing so will void the warranty.
