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H . Construction <br /> 1 . The VFD enclosure housing controller, modules, and components shall be NEMA Type <br /> 12, painted steel . The enclosure shall be free -standing, 72 inch minimum height, suitable <br /> for mounting against a wall , and constructed with all modules, components, and load, line <br /> and control terminations fully front accessible on an interior dead-front door panel . The <br /> enclosure shall have provision for top or bottom entry of wiring and conduits, as required, <br /> with adequate space for wire entry and bending in accordance with the NEC . The <br /> controller enclosure shall have gasketed doors mounted on semiconcealed hinges , with <br /> three point lockable door latches . Enclosures shall have panel-mounted ventilation units <br /> with washable filters sized to properly cool the VFD within an ambient temperature of 90 <br /> degrees , F . Ventilation units shall be powered by the drive ' s control power transformer <br /> which shall be oversized for this purpose . <br /> a. Mount the following devices on the front of the VFD deadfront panel : <br /> 1 . Hand/Off/Automatic motor run selector switch. <br /> 2 . Manual Speed potentiometer or equivalent . <br /> 3 . Digital indicator calibrated in percent of maximum output speed (frequency) . <br /> 4 . Master Reset pushbutton. <br /> 5 . Power On indicating light. <br /> 6 . Cabinet door handle with mechanical interlock to disconnect switch or <br /> incoming line circuit breaker. <br /> 7 . Controller Fault indicating light. <br /> 8 . Controller Keypad. <br /> 9 . Motor Run indicating light. <br /> 10 . Motor Overload indicating light. <br /> 11 . Other Fault indicating lights, when required. <br /> 12 . Overload Reset pushbutton. <br /> 13 . Elapsed run-time meter. <br /> 14. Emergency Stop pushbutton. <br /> Note: Items 2 & 3 may be integral to the keypad. <br /> 044572017 <br /> 16483 -8 <br />