IMPORTANT!
Never run the blower without the filters in place. Regardless of filters, never run the blower when con-
struction dust is present. The resulting heat exchanger damage is not covered by the Ecos
aire
®
warranty.
IMPORTANT!
Airflow must be set and confirmed before the refrigeration system is adjusted.
Turn off electric power to the unit.
Locate the compressor contactor and remove one contactor-coil wire to prevent the compressor from starting.
If possible and safe, turn on electric power to the unit.
Be sure that all air filters are clean and in place.
Note:
The following adjustment requires the user password, see
Enter Password.
On the controller interface, press Prg. The screen will be as shown.
Press
↵
to move the cursor under “OFF”.
Press
↑
to change “OFF” to “ON”.
Press
↵
to move the cursor back to the top left corner. The blower should start. If it does not, check for alarms
such as Fire Alarm.
A qualified air-balance technician should determine, set, and confirm that the airflow is within ±10% of the specified
value. Airflow must be measured with all access doors closed.
Airflow is adjusted by changing the variable sheave on the blower motor shaft. The airflow rate should be within
±10% of the value stated on the submittal forms.
Some
Ecos
aire
®
units may have voltage monitors that prevent operation in the
event the branch-circuit voltage is too high, too low, has lost a phase, or has
reversed phase rotation. If the green LED is not lit, confirm that the applied volt-
age is within ±10% of the nameplate voltage (NEMA MG-1), that all three phases
are present, and that the phase rotation is correct.
Owners Manual Ecos
aire
®
CM Series Precision Air Conditioner
Adjust Airflow Pre-Startup Adjustments Startup
Ecos
aire
®
July 2007 51
Data subject to change without notice.
green
LED
If the blower does not turn the proper direction, a qualified person
should disconnect electric power and interchange any two of the
branch circuit wires at the
Ecos
aire
®
input lugs. Torque the con-
nectors as discussed earlier.
Do not move any factory- installed
wires.
When the airflow is set and confirmed:
Disconnect electric power.
Reconnect the compressor contactor wire that was removed in the step above.
Fill out the air balance report and save a copy to be sent to Dectron along with the startup report.
Initial the appropriate box in the Pre-Startup Checklist in this section.
Direction of Rotation
Blower position and orientation
may vary.
Prg
Esc
System ON/OFF
System = OFF
ST
ARTUP
SAMPLE
Number and location of
component
s may vary
.
