Can the PLCS manual flow go to zero?
Yes
What happens if PZR level lowers 25% below the setpoint?
Letdown throttles closed and the standby Charging Pump starts
If PZR is at 50% level while at 10% power, what happens when the controller is placed into AUTO?
The normal Charging Pump stops
With PLCS at 100%, at what deviation does the standby Charging Pump start?
When the level lowers to a -23 deviation
Do Class B/U heaters have auto features when operated from the remote Shutdown (S/D) panel?
No
If PLCS is in Remote/Manual and Tavg fails low, what happens to the heaters?
Heaters will turn on due to the deviation
Is the transfer from Local-Auto to Remote-Auto bumpless, and what happens?
No; the normal Charging Pump stops and Letdown flow goes up
What happens to PLCS heaters if 110X fails low and is selected to ‘both’?
The heaters will cutout
What happens if the PLCS selected level fails HI?
Letdown isolates on high temperature (and only one Charging Pump remains)
What indicates the PLCS Remote/Auto setpoint?
The black and white pointer
How does a loss of NNN-D11 affect the PLCS charging pumps?
Only 1 Charging Pump will remain running
What is the likely failure if PLCS is normal at 100%, but then heaters turn on and Letdown isolates?
The selected level transmitter has failed high
How does a PZR reference leg failure affect Indicated Level and Letdown?
DP goes down, causing Indicated Level to go up, which causes Letdown to raise
What happens to Letdown if Tcold fails low while at 100% power?
Letdown goes max open
If a Charging Pump is in ‘Auto after start’ (red flag), does it cycle on PLCS deviations?
No
