Epson COLOR Copy Station 8600 - Manual (Page 28)

28 Setting Up the Printer
17. Roll the large capacity paper unit or 500-sheet paper cassette
unit and the printer into the cabinet.
18. Lock all casters on the bottom of the large capacity paper unit
or 500-sheet paper cassette unit.
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Warning:
Make sure the casters are securely locked. Otherwise, the
printer may move and cause an accident.