LEESON SM-Basic Series Sub-Micro Inverters (Obsolete) - Manual (Page 10)

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6.1 INSTALLATION AFTER A LONG PERIOD OF STORAGE
If input power has not been applied to the drive for a period of time exceeding three years (due to
storage, etc), the electrolytic DC bus capacitors within the drive can change internally, resulting in
excessive leakage current. This can result in premature failure of the capacitors if the drive is operated
after such a long period of inactivity or storage.
In order to reform the capacitors and prepare the drive for operation after a long period of inactivity,
apply input power to the drive for 8 hours prior to actually operating the motor.
6.2 EXPLOSION PROOF APPLICATIONS
Explosion proof motors that are not rated for inverter use lose their certification when used for variable
speed. Due to the many areas of liability that may be encountered when dealing with these applications,
the following statement of policy applies:
“Leeson Electric Corporation inverter products are sold with no warranty of
fitness for a particular purpose or warranty of suitability for use with explosion
proof motors. Leeson Electric Corporation accepts no responsibility for any
direct, incidental or consequential loss, cost, or damage that may arise through
the use of its AC inverter products in these applications. The purchaser expressly
agrees to assume all risk of any loss, cost, or damage that may arise from such
application. Leeson Electric Corporation or Leeson Electric Corporation’s
engineering department will not knowingly approve applications involving
explosion proof motors.”
WARNING!
Severe damage to the drive can result if it is operated after a long period of storage or inactivity
without reforming the DC bus capacitors!