LEESON SM-Basic Series Sub-Micro Inverters (Obsolete) - Manual (Page 9)

5
6.0 INSTALLATION
SM-Basic models are suitable for UL pollution degree 2 environment only, and MUST be
installed in an electrical enclosure which will provide complete mechanical protection and will
maintain the internal temperature within the drive’s ambient operating temperature rating. All
drive models MUST be mounted in a vertical position for proper heatsink cooling.
Maintain a minimum spacing around the drive of at least one inch on each side and two inches on the
top and bottom. Allow more spacing if the drive is mounted next to other heat-producing equipment.
Do not mount drives above other drives or heat producing equipment. Fans or blowers should be
used to insure proper cooling in tight quarters.
In order to properly size an enclosure, the heat generated by the drive(s) must be known. Refer to the
HEAT LOSS column in Section 5.0 - SM-Basic RATINGS. An enclosure manufacturer can then
determine the required enclosure size based on the total heat generated inside the enclosure
(from the drive(s) and other heat sources), the maximum allowable temperature inside the
enclosure, the maximum ambient temperature outside the enclosure, and the enclosure properties.
The SM-Basic Series is UL approved for solid state motor overload protection. Therefore, a
separate thermal overload relay is not required for single motor applications.
WARNING!
DRIVES MUST NOT BE INSTALLED WHERE SUBJECTED TO ADVERSE ENVIRONMENTAL
CONDITIONS SUCH AS: COMBUSTIBLE, OILY, OR HAZARDOUS VAPORS OR DUST;
EXCESSIVE MOISTURE OR DIRT; VIBRATION; EXCESSIVE AMBIENT TEMPERATURES.
CONSULT AC TECHNOLOGY FOR MORE INFORMATION ON THE SUITABILITY OF A
DRIVE TO A PARTICULAR ENVIRONMENT.
N O T E !
SM-Basic drives are intended for inclusion within other equipment, by professional electrical
installers. They are not intended for stand-alone operation.
WARNING!
Hazard of electrical shock! The SM-Basic control terminals are not isolated from line voltage!
Line voltage is present between the control terminals and ground. Do not touch!
Disconnect input power and wait three minutes before making connections to the control terminals.
Devices (such as switches, pushbuttons, potentiometers, relays, etc) and wiring connected to the
control terminals are hot to ground and must have an insulation rating of at least 240 Vac or a
dielectric rating of at least 1500 volts to prevent damage to equipment and/or injury to personnel.