User's Manual

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IMPORTANT SAFETY INFORMATION
READ THIS FIRST & SAVE THESE INSTRUCTIONS.
This manual contains important instructions for the installation and maintenance of UBIQUITI SM-MI-250 micro
inverters. Before installing, please read these safety instructions specifically. Take special care to follow the
warnings indicated on the unit itself as well as the safety instructions listed below.
Safety Symbols
To reduce the risk of injury and to ensure the continued safe operation of this product, the following safety
instructions and warnings are marked in this manual.
DANGER!
This indicates the risk of electric shock. The presence of high voltage levels may constitute to injury or
death to users and/or installers.
WARNING!
This indicates important information where failure to comply may result in safety hazards or cause
damage to this product.
Safety Instructions
Read all instructions and cautionary marks in the manual carefully before starting the installation.
DANGER!
Do not tamper or open this product. Opening this product may result in electric shock and void product
warranty.
DANGER!
Do not attempt to repair this product; it does not contain user-serviceable parts. Repairs and internal
servicing should only be performed by UBIQUITI authorized service personnel.
DANGER!
Perform all electrical installations in accordance with all applicable local electrical codes and the National
Electrical Code (NEC), ANSI/NFPA 70.
WARNING!
Only qualified electrical personnel should perform the electrical installation and wiring of this product.
WARNING!
Be aware that even without an external voltage source connected, the SM-MI-250 micro inverter may
contain high voltages and there is a risk of electrical shock.
WARNING!
Connect the UBIQUITI micro inverter to the utility grid only after receiving prior approval from the
electrical utility company.
WARNING!
The temperature of heat sinks outside of the device can reach over 85°C in normal operation. To avoid
human body burns, use caution while servicing micro inverters.
DANGER!