4000 Periodic Maintenance
Service Manual 1-11
• Opacity measuring chamber type 4000
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 fans
− Test function of heating
− Check changeover valve
− Clean the optical elements (by wiping)
− Linear check
• Cleaning
Replace particulate filter
(see section 5.3.3 Particulate Filter)
Check O-ring paper filter
Visual inspection probe and hose
Clean condensate pump
(using cleaning kit)
Function test
− Leak test
− Gas calibration
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