5 Maintenance; Open And Close The Door; Disconnect From Voltage Sources; Open The Door - Delta M100A 284 Operation And Installation Manual

5 Maintenance
Regularly maintenance can ensure that the inverter can keep great performance.
DELTA recommends to have a check to the unit every year at least.
The frequency of maintenance should be adjustable depends on the environment
of the site, different seasons and weather impacts.
- Ensure DC and AC cables are always de-energized during the maintenance to
avoid the shock hazard risk!

5.1 Open and Close the Door

5.1.1 Disconnect from Voltage Sources

1. Disconnect the AC Circuit breaker and secure to against reconnection.
2. Turn two DC switches which is in the right side of inverter to off position, then
secure to against reconnection.
3. Wait 60 seconds and make sure LED indicators of the inverter have gone out.
4. To ensure there is no current in the cables, please use a current clamp to
measure DC/AC cables.
5.1.2 Open Door
Before opening the front door, please wipe the inverter case if it is wet to
avoid water seepage.
1. Remove screws of the antenna bracket.
2. Use the 4mm hexagon wrench to loose the screw of the protection cover, and
then release the latch locks.
3. Open the inverter door and use the hexagon wrench to fix the door.
4. The inverter door can be removed for wider working space during installation
or maintenance.
5.1.3 Close Door
- Excessive moisture or dust in the inverter could cause unexpected damage
due to the corrosion on the live part. Ensure the inner of the inverter clean
without unreasonable pollution is important for a lifetime operation system.
- After cabling or maintenance for the inverter, please lock both toggle latch to
make sure the inverter will remain IP66 protection.
DANGER : ELECTRICAL HAZARD!!
ATTENTION
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Maintenance