LEESON Micro Series Compact Inverters - Manual (Page 25)

7.1 INSTALLATION AFTER A LONG PERIOD OF STORAGE
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!
If input power has not been applied to the drive for a period of time exceeding 6 months (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 2 hours prior to actually operating the
drive/motor system .
7.2 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 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 accepts no
responsibility for any direct, or 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
or LEESON Electric’s engineering department will not knowingly approve applications involving
explosion proof motors.”
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WARNING