New GentleYAG
Cryogen Spray Alignment Procedure
Candela Corporation
8503-01-0845, Revision A
Candela Corporation Proprietary
Page 8 of 10
Test #3 Cryogen Air Bubble Detection
Purpose:
To ensure that that air bubbles in the cryogen line are detected and the associated
“fault” message is displayed on the system.
Important: This procedure must be done with each GentleYAG handpiece delivery
system in your possession. The subsystem being tested is inside of each delivery
system, not in the laser system.
Procedure
1
Insure that the installed DCD canister is not empty.
Warning: Put on appropriate laser safety glasses
2.
Turn on the system and allow the “WARM UP” to
complete.
3.
With the Electrical Connector installed, disconnect the Cryogen Connector
(see Figure 3).
Electrical Connector
Cryogen Connector
Figure 3 - Delivery System Connections
4. Set the DCD spray on the front panel to the highest setting.
5. Set the FLUENCE to the lowest setting (this varies by spot size).
6. Enter the “Ready” mode, and calibrate the laser by pressing on the footswitch.
7. Remove the handpiece from the CALPORT and aim in direction away from
personnel (such as the floor).
8. Depress the footswitch to pulse laser continuously until a “PURGE REQUIRED”
window box appears on the user screen and lasing ceases. This should happen
in less than 50 pulses.
