Joining Type 3R Sections
This section provides instructions for joining Type 3R MCC sections (manufactured after February 1998).
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Turn off all power supplying this equipment before working on or inside the equipment, and follow lockout/tagout procedures. Always use a properly rated voltage sensing device to confirm the power is off.
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Remove the right section back plate (see Attach the Multi-Section Bracket).
NOTE: Steps 3 and 4 apply only if a new section is being added to an existing MCC line-up. If installing a new line-up, skip to Step 5. -
Remove the end deflector cap from the right side of the existing Type 3R section (see Remove Mid and End Deflector Caps from the Top of the MCC). Also, remove the mid deflector cap from the section being added to the right.
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Remove the end closing plate from the right side of the existing section.
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After placing the structures side-by-side, join them as described in Joining Type 1, Type 1 Gasketed, and Type 12 Sections.
Re-attach the back plate (removed in Step 2) to the right section using the additional hardware supplied. Attach the right side to the multi-section bracket (see Attach the Multi-Section Bracket).
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Install the mid deflector, ensuring both top plate flanges are covered (see Remove Mid and End Deflector Caps from the Top of the MCC).
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Using the six 10-32 screws supplied, secure the left front vertical channel of the Type 3R extension to the right front vertical channel of the Type 3R extension (see Secure the Vertical Channels).
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If the lifting angle is to be removed from the sections after installation, replace all hardware in the order shown (see Replace Lifting Angle Hardware).