S4KC SEriES USEr mAnUAL |
35
•
if zero of the five Battery LEDs illuminate during a manual battery test, check the battery connection and allow the
UPS to recharge the batteries for 1 hour, then initiate a manual battery test again.
•
if zero of the five Battery LEDs illuminate during the second manual battery test, replace the batteries and contact
SolaHD Technical Support at (800) 377-4384 or by e-mail at solahd.technicalservices@emerson.com.
8.4 Put the S4KC in Manual Bypass
Press the Standby/manual Bypass button and hold it for about 2 seconds while the UPS is in Utility (Ac) mode. The UPS
will transfer the connected loads to the internal bypass. if the internal bypass is not available because of utility power
problems, pressing this button once will be ignored. Bypass operation is indicated by an audible alarm and illuminated
amber Bypass indicator.
8.5 Shut Down the S4KC
1.
Transfer the UPS to manual bypass by pressing the Standby/manual Bypass button once (hold it for about 2 seconds).
if manual bypass is not available, disregard the first step.
2.
Press the Standby/manual Bypass button twice within 4 seconds (hold the button down for about 2 seconds each
time) to shut down the UPS.
3.
Power to the connected loads is now off.
8.6 Disconnecting Input Power from the S4KC
1.
After the UPS has been shut down as detailed in “8.5 Shut Down the S4KC”, turn off the output circuit breaker.
2.
Wait 30 seconds and verify that all indicators have turned off and the fan has stopped; this indicates that the power-
off is complete.
3.
if the UPS has an external battery cabinet, turn the external battery cabinet breaker switch to the OFF position.
4.
After powering off the UPS, the UPS ceases output and the load is powered off.
8.7 Maintenance Bypass
maintenance Bypass mode is used when maintenance or UPS replacement is required.
To place the unit in Maintenance Bypass Mode:
1.
Place the UPS on internal bypass. This may be done by one of the following methods:
a.
Press the OFF button on the front panel one time. (The unit will go into static bypass alarm.)
b.
Slide the bracket away from the maintenance bypass breaker on the rear of the UPS. This requires loosening the
captive screw and sliding the bracket up and away from the maintenance bypass breaker. (The unit will go into
static bypass alarm.)
2.
Verify that the amber LED (located on the rear of the UPS above the maintenance bypass breaker, labeled “mainte-
nance bypass available”) is illuminated.
3.
move the maintenance bypass breaker on the rear of the UPS to the ByPASS position. This requires loosening the
captive screw and sliding the bracket up and away from the maintenance bypass breaker.
!
wARNINg
Before switching the maintenance bypass breaker, always verify that the amber LED on the rear of the UPS is illumi-
nated. If the maintenance bypass breaker is closed while the UPS is operating on inverter, bypass power will feed
back to the inverter. This will trigger the UPS alarm, drop the load, and could potentially damage the inverter.
