Teledyne 200AH 用户手册

下载
页码 196
Teledyne API Model 200AH NO
X
 Analyzer Instruction Manual,  06492, Rev. G2 
 
8-4 
8.3. 
  Replacing the Converter 
The Converter is located in the center of the instrument, refer to  
Figure 2-6 for its location. The heater, thermocouple, ozone scrubber and converter are designed 
to be replaced as a single unit.  
1.  Turn off the power to the M200AH and allow the converter to cool. 
2.  Remove the entire assembly from the chassis:  
CAUTION 
The converter operates at about 700°C. Severe burns can result if  
not enough time is allowed for the assembly to cool. Do not  
handle assembly until it is at room temperature. 
 
A.  Remove the pneumatic fittings from the valves. 
B.  Remove the Molex connectors to the valve bracket, thermocouple wire and cartridge 
heater. 
C.  Remove the converter assembly from the chassis by loosening the 4 captive screws that 
secure the assembly to the chassis. 
3.  Disconnect the gas fittings and power cable grounding from the can. 
4.  Remove the valve assembly and bottom bracket and re-attach those two parts to the 
replacement converter assembly. 
5.  Re-attach the pneumatic fittings and valve assembly to the can. 
6.  Install the assembly back into the analyzer. Re-attach the electrical and pneumatic fittings. 
Leak check the assembly when completed. 
7.  Turn the power back on. The insulation can emit a burnt odor for the first 24 hours, this is 
normal. Allow the converter to burn-in for 24 hours, then re-calibrate the instrument.