Chapter 5 Ups Operation Instructions; Check Before Power-On; Ups Power-On - Liebert UHA1R-0100 User Manual

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Chapter 5 UPS Operation Instructions

Chapter 5 UPS Operation Instructions
This chapter introduces checking content, power-on, turning on UPS and daily operation procedures of the UPS
before the power-on of UPS.
During the operation, the buzzer alarm may appear at any moment. Press the ON/SILENCE key for one second to
silence the audible alarm, and press this button for one second again to resume the alarm beep.
1. If the UPS is fed with AC from a generator, conduct the operations according to the following instructions: start up the
generator, and do not start up the load of the UPS first. Connect the UPS to the generator, and switch on the loads one by one
when the generator operates stably. To ensure the reliable operation of the generator, it is recommended that the load of the
UPS should be less than 30% of the generator capacity. It is recommended that the selected generator should be 1.5 times ~ 2
times of the UPS rated capacity.
2. The battery has been fully charged before delivery. However, the transportation and storage may cause some charge loss. It is
required to charge the battery for eight hours before the UPS is used for the first time to ensure adequate back-up time.

5.1 Check Before Power-On

Before the UPS is powered on, check the following items:
1. Check that the UPS input and output cables are connected properly and reliably, and the UPS input cables are not
connected reversely.
2. Check that the positive and negative poles of the battery cables are correct.
3. Check that the communication cables are connected properly.
The UPS output terminals will be live when the start-up procedures of the UPS are performed. If the load is connected to the
output terminals of the UPS, confirm with the user that whether it is safe to feed power to the load. Ensure that the load is safely
isolated with the output terminals of the UPS, if the load is not ready for accepting the power.

5.2 UPS Power-On

After the UPS input and output cables is connected, the UPS will start up and conduct the UPS self-test, including
self-test of the battery, if the mains input voltage is within 120Vac ~ 253/264/276Vac. After the self-test is complete,
the UPS enters the standby mode, the mains indicator is on, as shown in Figure 5-1.
Note
警告 危 险
Figure 5-1 Indicator status
Liebert ITA 10kVA UPS User Manual
®
警告 危 险
Warning