Isolite E3-MAC Series, Installation & Operation Manual, Page: 35 / 40

11.0 MAINTENANCE AND SERVICE
Routine Maintenance
Routine Maintenance should be considered any maintenance that does not require
removing the Inv
erters’ 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.
E3-MAC 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.
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 E3-MAC Series are sealed lead calcium and are termed
“Maintenance Free”. This term may be misleading because ALL batte ries require
periodic maintenance even if it only consists of a visual inspection. We recommend the
following maintenance plan:
•
Once every 6 months the batteries should be visually inspected for cracks,
leaks, bulging or deformities and corrosion buildup on terminals.
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 E3-MAC 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.
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.
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