Normal and safe operation Liebert EXL S1
79
User Manual 10H52226UM60 - Rev. 1 - 01/2017
5.6. Placement into service
5.6.1. Forming
If the UPS devices have not been used for one year or more, the intermediate circuit capacitors must
be reformed. If the UPS devices are placed into service within one year after delivery (check
nameplate), this action is not necessary.
5.6.2. Switch on the UPS
•
C
heck that the UPS is connected according to chap. 3. on page 36. For parallel operation please
check chap. 7. on page 86.
• Make sure the ventilation grilles are unobstructed
• Make sure the ground connection is in place
• Make sure that any external switches are in the OFF (0) position and that the UPS is completely
de-energized
•Make sure that any external batteries are disconnected
5.6.3. Connect the batteries
Before the system starts, make sure that UPS battery connection polarity is correct. Wrong
connections can damage the system and endanger operator safety.
5.6.4. Switch to on-line operation
•
Set the UPS to On-
line Operation (see para 5.7 on page 80).
Contact customer service if the intermediate circuit capacitors must be
reformed.
Carry out placement into service as follows:
Warning
Do not connect any devices that may overload the UPS or draw direct current from it.
Notice
If these instructions are not observed correctly, problems may occur with the supply of
power.
Warning
This operation must be carried out by qualified personnel.
To prevent d
amage to the system, before closing battery breaker, use a suitable
instrument to make sure that the polarity of the battery voltage measured on the
external side of battery breaker matches the polarity indicated in (see Fig. 24-Fig. 37).
Warning
Close battery breaker only after battery polarity has been carefully checked.
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