4000 Periodic Maintenance
Service Manual 1-9
1.4.2 AVL DiSmoke 4000
•
Evaluation unit
Open evaluation unit (remove cover)
Visual inspection, clean pcb
If necessary update setpoint data and software
Close housing, seal with service seal
Enter in maintenance log book
• Opacity measuring chamber
Visual check
− Silicon seal
− Leaks in housing
− Housing components (cracks, faults)
− Closure fittings, snap mechanism of optical elements
− Electrical plug connections and cables
− Probe hose, probe clamp
− Soiling of measuring chamber, purging air channel
Function check
(each test is described in the Operating Manual)
− Test function of fan
− Test function of heating
− Check changeover valve
− Clean the optical elements (by wiping)
− Linear check
• Cleaning
Visual inspection probe and hose
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