• Once every 6 months the batteries should be visually inspected for
cracks, leaks, bulging or deformities and corrosion buildup on
terminals.
LM/LMOPT SERIES | 43
11.0 MAINTENANCE AND SERVICE
CAUTION – Whenever maintenance and service is to be performed, it may be
desirable
to shut the unit down. Please refer to Start up and Shut Down procedures
for details.
CAUTION – Always assume AC and DC Voltages are present at the LM/LMOPT Series
terminals because the inverter is capable of providing output voltage from the
batteries
when there is no AC input present. The unit will pass AC voltages from the
AC input to
AC output if the system ON/OFF switch is ON.
Routine Maintenance
Routine Maintenance should be considered any maintenance that does not
require removing the Inverters’ front cover panel. This maintenance includes
periodic cleaning of dust from the cover and cabinet base to ensure proper
convection air flow. Since no fans are required during float charge on this system, air
flow moves by convection. Convection air circulation is from bottom to top as heat
naturally rises.
Keep all foreign objects off the top and away from the sides of the unit as these
may impede convection air flow.
LM/LMOPT Series automatically performs monthly tests which is fully
programmable. A quick test by manually pressing the test button will transfer the
system to the Inverter Mode and will turn on all the connected loads such as the
multipurpose Normally-
Off/Switched load.
Ensure there are no faults present. If there are faults, please refer to the User
Interface 10.13 for a complete detail of what this fault may indicate.
Monthly Test - By pressing the TEST button on the front panel, the unit will
transfer
to
the Inverter Mode. This test will run for at least 15 seconds and will exit back to
Battery Charging upon synchronizing to utility power.
Yearly Test - The NFPA code requires that a yearly test of 90 minutes be
performed,
and
the system must be able to run the full 90 minutes without
going into a LVD
fault.
A yearly test of 90 minutes can be initiated by holding in the TEST button for 5
seconds. An alternate method of performing the 90-minute yearly test would be to
turn off the input feed breaker for the 90 minutes and then re-apply when the 90
minute duration is complete.
11.1 Battery Maintenance
The batteries used in the LM/LMOPT Series are sealed lead calcium and are
termed “Maintenance Free”. This term may be misleading because ALL batteries
require periodic maintenance even if it only consists of a visual inspection. We
recommend the following maintenance plan:
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