Starting the UPS System
Ensure the input breaker is switched on (Figure, page 15). When the “AC Input” LED is lit switch the RUN/STOP switch to the RUN position (RUN = I, STOP = 0).
When the RUN/STOP switch is in the RUN position both the “AC Input” and the “On Line” LEDs should be lit. It is advisable to allow time for the batteries to fully charge before any load is connected (see “Battery Recharge Time”, page 24).
Stopping the UPS
There are two ways to turn off the UPS: switching from online to bypass mode, or completely shutting down.
Option 1
The first option is to place the UPS into bypass mode. Bypass mode means that if there is AC power available, the UPS will route power directly from the input source to the connected loads without any conditioning. The UPS inverter is off during this state, but the attached loads do not lose power during the transition. To place the UPS into bypass mode, switch the RUN/STOP switch to the STOP position. This mode is most often used manually during maintenance operation or automatically upon the occurrence of an internal UPS fault. (For more information concerning bypass mode see Appendix D: Bypass Undervoltage / Overvoltage).
Option 2
The other option is to turn the UPS off completely. This means that in addition to the UPS’s inverter shutting down, all power will be stopped to any equipment attached to the UPS. To shut the UPS down completely, switch the RUN/STOP switch to the STOP position. Then switch the input breaker off (Figure, page 15). Once the input breaker has been switched off, all the LEDs should turn off.
If the RUN/STOP switch is in the RUN position when the input breaker is switched off, the unit will switch to battery backup mode. The unit will continue to run for as long as the available battery reserves can support the connected loads.
20 | 1800 Series User Manual |
