How to convert 8501XO normally open contacts to normally closed in the field?

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Issue:
8501XO conversion

Product Line:
Industrial Relays

Environment:
Type X

Cause:
N/A

Resolution:
Remove the top plate and/or adder deck and pull out the contact cartridge then turn it over. Put the cartridge back into the cavity and install the cover/adder deck .

Green indication through the window indicates a N.O. contact and and yellow indicates N.C. contact