4000 Periodic Maintenance
Service Manual 1-7
• 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
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
Function test
− Leak test
(see Operating Manual)
− Gas calibration
(see Operating Manual)
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