No 2 -To-No Converter Replacement - Thermo Scientific 42i Instruction Manual

Servicing
NO2-to-NO Converter Replacement
NO -to-NO Converter
2
Replacement
7-22 Model 42i Trace Level Instruction Manual
Use the following procedure to replace the converter
Equipment Required:
NO -to-NO Converter
2
Wrench, 7/16-inch
Wrench, 9/16-inch
Wrench, 1/2-inch
Wrench, 5/8-inch
Screwdriver
Nut driver, 1/4-inch
Nut driver, 5/16-inch
CAUTION Avoid contact with converter heated components. Allow
converter to cool to room temperature before handling converter
components. ▲
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap
must be worn while handling any internal component.
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Allow converter to cool to room temperature to prevent contact with
heated components.
3. Disconnect plumbing at converter inlet and outlet.
4. Disconnect thermocouple leads and heater connector from temperature
control board.
5. Loosen the four captive screws holding converter housing to floor plate.
(Figure 7–11).
▲
Thermo Fisher Scientific