Safety notice – USL CMSA-100 User Manual
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CMSA-100 Manual v131212
Page 3
1. Safety Notice
Review the following safety precautions to avoid injury and prevent damage to this
product. To avoid potential risk, use this product only as specified and only for the purpose
described in the instruction manual.
To Avoid Fire and Personal Injury:
Use correct power supply. Use only the power supply provided. Ensure that the AC
power outlet is located near the product and is easily accessible.
Ground the unit. Connect a safety ground to the ground stud on the rear panel of the
CMSA-100. Run a green or green/yellow #14AWG (2.5mm
2
) wire from the ground stud
to the building safety ground (such as grounded metal conduit).
Restricted Access. If the CMSA-100 is being used to switch voltages higher than 24V, it
must be mounted in an enclosed equipment rack.
Circuit Protection. External overcurrent protection is required to protect the CMSA-
100 relay contacts and the associated wiring. Ensure that power supplied to these
contacts is current limited with appropriate fuses, circuit breakers, or current limited
power supply.
Observe source ratings. To avoid risk of fire or electric shock, the power source must
be 100 – 240 VAC, 50 – 60 Hz.
Do not operate with suspected failures. If you suspect there is damage or malfunction
with this product, call the factory.
Do not attempt repair. Only a trained factory service person is authorized to repair
this product.
Do not operate this product near heat sources. This product should not be located
near heat sources such as radiators, heat registers, or stoves.