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Teledyne API Model 201A NH
3
Analyzer Instruction Manual, 04689, Rev. B1
Table 3.2 – M501NH Converter Rebuild Parts List
Part No. Description
KIT000191 Converter Rebuild Kit
KIT000139 Ceramic Bushings
HE0000007 Ceramic Heater 220W 60 VAC
Procedure:
1. Turn off power to the converter and allow to cool. IT IS VERY IMPORTANT THAT
THE CONVERTER BE COOL BEFORE ATTEMPTING ANY DISASSEMBLY OR
REPAIRS.
CAUTION VERY HOT
Will cause severe burns – disassembly while hot will
damage other converter components. Allow sufficient
time to cool.
2. Remove the chassis cover of the M501NH, remove the aluminum cover over the
oven, remove the two U-shaped hold down clamps.
3. Disconnect the 1 stainless steel and 2 PTFE tubes from the converter cartridge.
4. Loosen the nut holding the cartridge assembly in the U-shaped angle bracket
mounted on the chassis floor.
5. Gently lift and tilt the converter assembly out of the U-shaped bracket and slide the
assembly out of the oven.
6. Loosen the ¼” SS tube fitting nearest the hold-down bracket, this fitting holds the
central tube in the converter. Replace the tube that is part of KIT000191
7. Re-assemble the converter by doing the above steps in reverse order.
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