Varian 990 dCLD II, Operation Manual

Page: 69 / 162

Model 990 dCLD II Component Leak Detector
3-19
3.5 Quick Start Checklist
❑
Make the vacuum connections between the 990 dCLD II spectrometer assembly and
your vacuum system.
❑
Make electrical connections between the turbo spec tube assembly and the control
unit (see Section 3.1.3 “Connecting the Control Unit to the Turbo Spec Tube
Assembly” on page 3-2).
❑
Make mains power connection to the control unit.
❑
Power the 990 dCLD II by turning on the main power switch on the rear panel.
❑
Check that the POWER LED on the front panel of the control unit is lit after the
power on lamp test is completed.
❑
Make sure that either IDLE mode is disabled and/or that the RUN input is active.
❑
Start the backing pump(s).
❑
Check that the HIGH VAC LED lights after the turbo pump achieves the set speed.
❑
Check that the SPEC TUBE LED lights after the spectrometer tube pressure goes
below 10 mTorr.
❑
Allow the system to run for at least 30 minutes to stabilize.
❑
Calibrate the 990 dCLD II to a known helium leak.
❑
Zero the 990 dCLD II.