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6000 Series Purge/Pressurization System
I/O Manual
The user interface
To cycle power to the unit, press the EXIT, Left
Arrow, START/SET, and Right Arrow keys at the
same time. This will cycle power to the EPCU
without physically removing power. This re-cycle
feature will de-energize the relays of the EPCU
and reset the unit.This feature does not affect
any of the settings in the menus of the EPCU.
To turn LCD back light on and off, press the
left and right arrow keys at the same time. The
setting remains through the power cycles.
To change the LCD contrast, press the up and
down arrow keys at the same time. This will take
you to the contrast screen. Then use the up and
down arrow keys to adjust the contrast. Once the
contrast level is selected, press the START/SET
key to save setting. This setting remains through
power cycles.
RAPID EXCHANGE LED (blue)
On: rapid exchange ow is above min
SYSTEM BYPASS LED (yellow)
On: bypass is initiated
ENCLOSURE POWER LED
On (green): enclosure power relays energized
Off (red): enclosure power relays deenergized
ALARM FAULT LED (red)
Blinking: any alarm input detection
Solid: 6000 series internal system fault
SAFE PRESSURE LED (blue)
On: minimum over pressure
SETUP: to enter setup mode
EXIT: to exit a menu
STATS: history and
up-to-date information
Display: 2 x 20 LCD
with backlight screen
Arrow keys: for scrolling
through the menus
and setting passwords
START/SET: for menu
entry selection
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