First Time Laser Power-Up Procedure - NORTHROP GRUMMAN Patara I User Manual

First Time Laser Power-Up Procedure

© 2018 Cutting Edge Optronics, Inc.
3. Start process fluid flow. Press the Power button on the front panel. The
system startup sequence begins. The pump turns on and fluid begins
circulating through the system. The set point temperature appears briefly on
the temperature display. After a few seconds, it will be replaced by the actual
fluid temperature. The compressor will begin operating 15 to 20 seconds after
power up.
4. Check for leaks. Once the pump is turned on, check all of the connectors to
see if there is any leakage. If leakage is observed, turn off the pump
immediately and fix the leak. The reservoir's fluid level will drop as the
process and/or process cooling lines fill with fluid. Add fluid as follows:
 Closed systems: Slowly add fluid to the reservoir until the liquid level
remains stable.
 Open bath systems: Adjust the restriction (pinch) valve until the liquid
level in both the bath and the reservoir remain stable. Add fluid as needed
to bring liquid levels in the bath and reservoir up to the desired level.
Make sure the fluid level in the bath is above the opening on the chiller's
inlet hose.
5. Replace reservoir cap.
Remove the cap that protects laser output window and make sure the window is
clean. If not, gently clean it with a lens tissue and methanol.
Turn on the chiller and verify its settings:
1. Check the temperature setting of the chiller. Refer to the ATP Test Report
Data Summary included in the Patara laser shipment for the coolant
operational temperature. The chiller's temperature setting should match the
report's. If set to a different temperature, change it to match the setting on the
report.
2. The minimum flow rate for Patara laser is 1.5 gpm. Ensure the flow rate meets
the requirement. If it does not, open the valve inside the chiller until it
matches the flow rate recorded in the test report.
3. Run the chiller for approximately half an hour to allow it to stabilize at the set
temperature.
WARNING.
Do not operate coolant system below air condensation temperature (dew
point) at the laser head. Condensation on the diode arrays can seriously damage the
laser head.
Chapter Four: Installation and Operation
33 Patara I and II Laser User Manual