Ferrups 0800-2000 Installation Manual - page 32
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11. Now switch the bypass switch to “LINE.” Using the AC voltmeter, make sure that the voltage to your
protected equipment is correct; you can verify the voltage at the Load Distribution Panel or the UPS-
protected receptacles for your equipment.
12. Next, switch the bypass switch to “UPS” and verify the voltage to your protected equipment once more.
13. If all of your readings in the voltage and phase check are acceptable, follow these steps:
a.
Put the bypass switch cover back on and tighten the screws securely.
b. Turn the FERRUPS off.
c.
Push in the DC switch at each separate battery cabinet to turn off DC.
d. Put the top cover back on the UPS, and reattach all screws. (There are three screws on each side, and
there is one screw on the top.) After you have reattached the top cover, push the front panel back in
place.
e.
Turn of the AC LINE Disconnect switch. If you will not be starting the UPS now, you can leave the
bypass switch in the “LINE” position and switch on your protected equipment. Your equipment will be
receiving direct AC input power; it will not be protected until your start the UPS and switch the bypass
switch to “UPS.”
You have finished installing the FERRUPS. To restart the UPS, see the User Manual.
Appendix A: Connections for the Emergency Power
Off (EPO) Signal
Computer rooms often have an emergency shutdown switch (or panic button) that shuts off the power to all
equipment in the computer room. If the UPS’ AC input source is connected to the switch, the switch will shut
off the FERRUPS input power. However, the UPS will interpret this as a power outage and will continue to
provide output power to the equipment it protects until its batteries run down. To make sure the emergency
shutdown switch can shut off the UPS’ output power, use the unit’s remote Emergency Power Off (EPO)
feature.
Your computer room’s emergency shutdown switch must have a set of dedicated contacts between pin 1 and pin
2 of J13. Use a shielded, single twisted pair cable to connect the emergency shutdown switch to the UPS. See
When pin 1 is disconnected from pin 2, the FERRUPS output power is shut off. When this happens,
the FERRUPS will display an “EPO Shutdown” alarm. To restart the UPS after a shutdown, press the On/Off
switch on the UPS back panel, and press a button on the front display panel to confirm the restart.
If your unit has an external (separate) bypass switch, you must also connect wires from the bypass switch to J13
on the UPS logic board. (See Figure 26 on the next page.) It is best to make this connection at the same time
that you connect the bypass wires to J13 (
. To make the connection, follow the steps on
the next page.
1. If the top cover has not already been removed, first pull the top front panel out slightly; the holes in the right
side of the panel can help you do this. Do not strain the ribbon cable behind this panel. If you need to
remove the front panel completely, you can disconnect the ribbon cable first, but the display will not operate
until you reconnect it. Remove the three screws on each side of the UPS and one screw on top of the UPS as
shown on the next page. Then, lift the cover off the UPS.