
3.INSTALLATION B-70265EN/02
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(4) Turn on the oscillator start switch, wait for 2 to 3 seconds, then
turn off the switch, and wait till purging.
(5) Apply the helium leakage detector to a possibly faulty position.
If there is a leakage, the checker indicates it by display or sound.
When using the liquid leakage checker, drip the liquid on a
possibly faulty position. If gas leaks, bubbles appear, so you can
determine the location of a leakage. After using the liquid
leakage checker, wipe off the checker, and clean the position
with alcohol.
NOTE
The helium leakage detector detects helium in the
laser gas. If ambient air flows, detection becomes
difficult. So, checking should be made in a nearly
no-wind condition.
(6) After completing the check, reset the value set in (3) above to the
original setting.