Teledyne 6200E - Sulfides Analyzer - Manual (Page 199)

Model 6200E Instruction Manual Instrument Maintenance
M6200E Rev: A1 199
Converter
Assembly Cover
Band Heater and
T/C Assembly
H
2
S Æ SO
2
converter
Converter
Assembly Housing
Band Heater
Power LEads
Figure 9-3: H
2
S Æ SO
2
Converter Assembly
• Wrap the band heater around the new replacement cartridge and tighten the screws using
a high-temperature anti-seize agent such as copper paste. Make sure to use proper
alignment of the heater with respect to the converter tubes.
• Replace the converter assembly, route the cables through the holes in the housing and
reconnect them properly. Reconnect the grounding clamp around the heater leads for safe
operation.
• Re-attach the tube fittings to the converter and replace the insulation and cover.
• Replace the instrument cover and power up the analyzer.
9.3.6. Cleaning the Sample chamber
The sample chamber should be cleaned whenever troubleshooting suggests. A dirty sample
chamber will cause excessive noise, drifting zero or span values or low response.
To clean the sample chamber, it is necessary to remove it from the sensor housing. Use the
following guide:
1. Turn off the instrument power and vacuum pump.
2. Disconnect the black 1/4" exhaust tube and the 1/8” sample and ozone air tubes from the
sample chamber. Disconnect the heater/thermistor cable.
3. Remove four screws holding the sample chamber to the PMT housing and lift the cell and
manifold out.