1
Q
A PEO observes the following indications on a temperature maintenance circuit control module.
the green “SP” LED is lit
the red “OT” and “UT” LEDs are not lit
What does this indicate about the condition of the circuit?
A
the temperature of the circuit is below the control set point but above the “UT” set point and the heat trace cable should be energized
2
Q
The function of the individual RTDs in circuits associated with Freeze Production panels is:
A
provide an alarm only on an under temperature (UT) condition
