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Section 200 Maintenance
200.1 Safe Shut Down Procedure
CAUTION: To avoid possible equipment damage or personal injury, assume that there is AC voltage present
inside the LG inverter system unit any time AC input power or DC battery voltage is applied. The inverter is
capable of providing output voltage from the batteries even when there is no AC input line voltage. When AC
input voltage is present, the unit can provide output voltage even when the batteries are disconnected.
Do not touch components inside the unit. DC voltage is always present at the batteries and battery cables.
Final Shut Down Procedure
1) Open the unit’s front access panel.
2) Place the LG Battery Switch S2 in the off OFF position and then place the AC Input circuit breaker at the service panel
in the OFF position.
CAUTION: HAZARDOUS ENERGY IS STORED IN CAPACITORS INSIDE THE LG UNIT. AFTER TURNING OFF
SWITCHES, ALLOW 5 MINUTES FOR CAPACITORS TO DISCHARGE BEFORE ATTEMPTING ANY SERVICE
PROCEDURES.
3) If the service technician does not need to access the inside of the unit, keep the unit’s front cover/door closed.
4) If the unit will be shut off for an extended period of time, recharge batteries every 60 to 90 days.
CAUTION: The batteries will be damaged and the warranty voided if not routinely recharged.
NOTE: To turn power back on, follow the “System Start-up Procedure” outlined in Section 108. Be sure to complete all
of the steps to assure the unit will operate properly.
200.2 Routine System Maintenance
The
LG
inverter system unit is designed to provide years of trouble-free operation. The unit does require some routine
attention to assure peak performance. The Manufacturer recommends a Preventative Maintenance check be performed
by a qualified service technician at least every six months. The technician must observe important safety precautions
while performing the following recommended tasks:
•
Inspect and clean the unit interiors;
•
Inspect all batteries for leaks, case swelling or terminal corrosion;;
•
Perform an emergency operation test to check operation of all critical connected loads
200.3 Manual Routine Inverter Tests
NFPA101 requires that Emergency Lighting Equipment be tested on a monthly basis for a period of at least 5 seconds,
and a minimum of 90 minutes once a year. We strongly recommend these guidelines be followed to insure system
readiness, and to prolong battery life. The
LG
system was designed with a front panel test switch to facilitate monthly
testing. Simply depress the button and hold to test the inverter at anytime. Once released, the
LG
will revert back to
standby operation. For annual 90-minute discharge or other prolonged tests, simply turn off the AC Input breaker at the
service panel.