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Step 1: Reinstall The Option Mounting Bracket - ABB ACH400 Series Retrofit Manual

Hvac drives. vertical electronic bypass to e-bypass, 1 - 25hp @ 208v, 1 - 50hp @ 480v (r1 ... r4 frame size drives)

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Tighten the gold colored cover screw.

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Reinstall the ACH550 Control Panel.

Step 21: Reinstall the option mounting bracket.

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If the metal bracket was removed in Step 6, reinstall the metal bracket

and fasten it to the drive with the original 2 screws.

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Step 1: Reinstall The Option Mounting Bracket - ABB ACH400 Series Retrofit Manual