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Konus Burners, Primary, and Vat Pumps

then ported through the HE heat exchanger located in the log ponds.
The heat is dissipated to the ponds in this mode. The flow is then
ported through the No. 3WV valve and back to the Konus burner.
AV5 is a normally closed, two position, three way, single solenoid,
spring return, directional valve.

BO2 Temperature Switch

The switch is set at 140°C and is used to bypass the flow setpoints at
start-up. On initial start-up, lower flow rates will exist through the FO
orifices because of the colder oil. Once the oil temperature rises to
the setting of the switch (140°C), the flow meters (FM1 and FM2)
must read above 300. This means that the pressure drop across the
specific orifice is above .3 BAR. This switch is labeled “Inlet
Temperature Too Low” in the PLC program.

Troubleshooting Thermal Oil Systems Page 3