FloAire PCU Filtration - Manual (Page 11)

11
The HMI for the PCU filter pressure monitor is a “Smart” rocker switch installed with a built in organic LED
monochrome graphic display. The rocker switch has three momentary switches, one is actuated when the
top portion of the rocker is depressed, the second one is actuated when the middle portion of the rocker is
depressed and the third is actuated when the bottom portion of the rocker is depressed.
General Navigation Rules
•
Top button is used to go to the previous menu.
•
Middle button is used to select or enter the current selection choice.
•
Bottom button is used to step through the available selection choices.
•
Screen saver is automatically selected after 2 minutes of inactivity. During normal operation the
screen saver is a blank screen, but if there is a fault it will flash the fault screen.
HMI MENUS
Following are the various menus that appear in sequential order during navigation thru the HMI.
• PCU logo
This screen shows up upon unit start up.
•
Filter Status
Displays percentage of filter clogging for up to 5 filter modules or “Missing” if a module’s
filters are missing. “Calibration Required” will be displayed if the calibration sequence has
not been completed upon PCU unit start up.
•
Pressures
This menu has 2 screens. The first screen displays pressure drop for up to 5 filter
modules. The second screen displays the total pressure drop across the PCU, PCU inlet
static and discharge pressure if configured.
• Faults
The following are various faults that are displayed on the HMI. “No faults” are displayed if
the PCU is functioning as desired.
“Calibration Required”
“Fltr Clogged”
“Fltr Missing”
“PCU clogged”
“72hr Clog”
“Missing Door”
•
Reset faults
Once a fault is activated and the necessary corrected action is taken this menu choice is
selected to clear the fault.
•
Calibration
A 4 digit PIN (1234) is entered using bottom and middle buttons. Once entered correctly
the new filter calibration sequence is started. “Calibrating” will be displayed until
calibration is complete. A percentage complete will also be displayed. Fan speed must
be maintained at 100% for the entire calibration time. If fluctuations are detected the
calibration sequence will restart from zero percent.
Calibration MUST be performed after PCU unit start up or with any PCU or Hood Filter
configuration change. Calibration is ALWAYS performed with clean PCU filters.