Teledyne 402REU - Hydrocarbon analyzer - Manual (Page 40)

Chapter 5 Model 402 R-EU
Teledyne Analytical Instruments 5-6
thermistor to the circuit. If the light stays on constantly, but the
compartment does not heat up, then a problem with the heating
element or connecting wiring is indicated.
2. Apply procedure for removal of internal inacessible shock
hazards, mentioned in section 1, page VI of this manual
3. Check the sensing thermistor by measuring the resistance
between its connecting wires. See Figure 5-2. Disconnect one of
the thermistor wires from terminal strip TS-2 (terminals 1 and
2) on the mother board and measure resistance between that
Figure 5-2: Identification and Location of Thermistor and Wires