Armstrong World Industries EHU-703 - Manual (Page 13)

INSTRUMENT PANEL
The Mode select button is depressed for
approximately ½ second to switch both the
"display mode selected" indicator and the 3
MODE BUTTON, digit display between:
INDICATOR, -DEMAND- % of humidistat control range.
and DISPLAY -CURRENT-
actual current in amps.
-% POWER- ratio of current draw to the
nominal rating of the unit.
-DIAGNOSTIC MODE-
readout of diagnostic
codes.
Leaving the display in the diagnostic mode for 10 seconds initiates
the input/output diagnostic routine (see Diagnostics pg. 20).
The 3 digit display also exhibits a diagnostic code in the event that
the unit has shut down automatically.
FILL LIGHT
Indicates when the fill valve is energized to add water to the steam
generator.
DRAIN LIGHT Indicates when the drain valve is energized to drain water from the
steam generator.
HIGH WATER LIGHT
Indicates that the water level in the generator has risen to the high
water level.
TANK OFF LIGHT Indicates when power to the generator has been interrupted (tank
contactor open).
TANK ON/OFF
Depressing the tank on/off button for ½ second will open the tank
contactor. The tank off light and the diagnostic light will be on and the
display will show the message CO8. The unit will stay in this mode
until the button is pressed again.
MANUAL DRAIN Depressing the manual drain button for ½ second will open the drain
BUTTON
valve. The tank will continue to drain until the button is pressed again.
13
DEMAND
CURRENT
% POWER
DIAGNOSTIC
FILL
DRAIN
HIGH WATER
TANK OFF
MODE SELECT
TANK ON/OFF
DRAIN ON/OFF