13
Service Manual for Dry Channel HDC3/HDC6 Units
1000 Ohms
1000 Ohms
RTD
Check the RTD Thermocouple by measuring
the resistance between the two lead wires.
There are two RTD probes in each Foil Wrap. To
access the RTD, follow the procedure described
in the CHANNEL ASSEMBLY paragraph in
COMPONENT REPLACEMENT section.
1. Disconnect the RTD wires.
2. Connect an ohmmeter across the RTD leads
and verify that the resistance is approximately
1000
Ω
at ambient room temperature.
3. Check both RTDs in the Channel Assembly.
4. Replace the Dry Channel Assembly if an RTD
is defective.
Refer to the Wiring Diagram.
Figure 15.
Foil Wrap with RTD Connectors
