AAON SA-070 - Manual (Page 51)

51
knob to the percentage of Over or Under
voltage desired. A typical over and under
voltage percentage is 10%.
Adjust the bottom knob labeled RESTART
DELAY.
For automatic restart after
recovery of voltage select from 2 seconds up
to 5 minutes. After recovery of line voltage
this is how long the monitor will wait before
energizing the output relay. For manual reset
adjust the knob fully clockwise to MR. After
recovery of line voltage the MANUAL
RESET button located between the 2 LEDs
must be pressed.
Now that the settings have been made, you
can apply the supply and line voltages to the
monitor. The monitor will only operate
when the supply voltage is available.
On power up, with the line voltage and the
supply voltage applied, the monitor takes 3
to 10 seconds to evaluate the line voltage,
compare that voltage to the knob settings
and then energize if all parameters are
satisfied or will remain off if any operating
parameter is incorrect.
All of the knob adjustments are adjustable
after power up, except the voltage range will
not change and going from single or three
phase to the other will not change (i.e.
within 440 to 480 VAC, but not to 208 or
230 VAC).
LED Codes
Powering up with voltage present which
matches knob settings:
1. On/Off LED = Alternating Green/Red
Phase Loss LED = Out
2. On/Off LED = Out
Phase Loss LED = Alt. G/R
3. On/Off LED = Alt. G/R
Phase Loss LED = Out
4. On/Off LED = Alt. G/R Flashing
Phase Loss LED = Green
5. On/Off LED = Green
Phase Loss LED = Green
Powering up with no voltage present:
1. On/Off LED = Alternating Green/Red
Phase Loss LED = Out
Going into trip condition after operating
conditions were good:
1. On/Off LED = Green
Phase Loss LED = Green
2. On/Off LED = Green Flashing
Phase Loss LED = Red
3. On/Off LED = Red
Phase Loss LED = Red
Going to good condition from trip condition
- automatic reset:
1. On/Off LED = Red
Phase Loss LED = Red
2. On/Off LED = Alt. G/R Flashing
Phase Loss LED = Green
3. On/Off LED = Green
Phase Loss LED = Green
Going to good condition from trip condition
- manual reset:
1. On/Off LED = Red
Phase Loss LED = Red
2. On/Off LED = Alt. G/R Flashing
Phase Loss LED = Green
3. Manual Reset button is pressed
4. On/Off LED = Green
Phase Loss LED = Green
Filter Replacement
Monthly filter inspection is required to
maintain optimum unit efficiency.
It is strongly recommended that filter media
be replaced monthly. Filters are located
upstream of the evaporator coil. Open access
panel and pull filters straight out to inspect
Electric shock hazard. Shut off all
electrical power to the unit to avoid
shock hazard or injury from rotating
parts.
WARNING