UT340, UT360, UT380, and UT3100
Planning and Installation Manual
21
5. Check the DC voltage.
a. Connect the DC fuse(s) as shown in the battery installation diagram provided with the
batteries. Verify proper voltage and polarity at the battery pack. See
in Section 103 for nominal DC voltage.
b. Turn the DC disconnect (DCD) “ON.”
c. Meter for proper nominal DC voltage at the UPS end of the cables. Make sure the
polarity agrees with the markings on the UPS battery input terminals.
d. After checking the DC voltage, turn the DC disconnect (DCD) “OFF.”
6. Connect the negative (–) cable(s) to the UPS. Tighten to the proper torque specifications.
7. Replace all covers.
, “Initial Startup and Phase Check.”
Battery Replacement Information
Only a qualified service person familiar with battery systems should replace batteries. See
, “Shutdown Procedures,” to bypass and shut down the UPS.
Review all of the warnings at the beginning of
before replacing the batteries.
Use the Same Number and Type of Battery: To ensure continued superior performance of
your UPS and to maintain proper battery charger operation, you must replace the batteries
with the same number of batteries. The batteries must be the same manufacturer type as the
original batteries and have the same voltage and ampere-hour rating as the original batteries.
Verify that the Battery Terminal is Not Grounded: If any battery terminal is inadvertently
grounded, you must remove the connection from the terminal to ground (earth) before you
service the batteries. Contacting any part of a grounded battery can cause a risk of electric
shock. An electric shock will be less likely if you disconnect the ground connection before
you service the batteries.
Handle Used Batteries with Care: Assume that old batteries are fully charged. Use the
same precautions you would use when handling a new battery. Do not short battery terminals
or the battery string with a cable or tool when you disconnect the batteries.
