LEESON FHP Series NEMA 4x Variable Speed Drive - Manual (Page 16)

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• Protect the drive from dirt, moisture, and accidental
contact. Provide sufficient room for access to the
terminal block and calibration trimpots.
• Mount the drive away from the heat sources. Operate
the drive within the specified ambient operating
temperature range.
• Prevent loose connections by avoiding excessive
vibration of the drive.
• The chassis must be earth grounded. Use a star washer
beneath the head of at least one of the mounting screws
to penetrate the anodized chassis surface and to reach
bare metal.