Rosemount Analytical NGA 2000 - Chopper Motor Replacement; Source Replacement; Detector Removal; Flow Sensor Replacement

M
AINTENANCE AND
T
ROUBLESHOOTING
748332-D Rosemount Analytical June 1997
4-3
NGA 2000 Non-Dispersive Infrared Analyzer
Air
Flow
F
IGURE
4-2. M
ODULE
F
AN
A
SSEMBLY
4.5 CHOPPER MOTOR REPLACEMENT
See Figure 4-3 for a breakdown of the Motor/Source Assembly. The entire optical
bench must be removed to perform this replacement.
4.6 SOURCE REPLACEMENT
See Figure 4-3 for a breakdown of the Motor/Source Assembly. The entire optical
bench must be removed to perform this replacement.
4.7 DETECTOR REMOVAL
See Figures 4-4 and 4-6 for breakdowns of the optical bench. The entire optical bench
must be removed in order to perform this disassembly.
4.8 FLOW SENSOR REPLACEMENT
See Figure 4-4 for Flow Sensor location. To replace Flow Sensor, remove all
connecting hardware and undo connections to the sample line.