Epson AcuLaser C1900 Reference Manual page 170

The printer weighs about 30 kg (66.1 lb). One person should never
attempt to lift or carry it alone. Two people should carry the
printer, lifting it from the positions shown below.
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Follow these steps to install the optional 500-Sheet Paper Cassette
Unit.
1. Turn the printer off and unplug the power cord.
170
Installing Options
Warning:
If you lift the printer incorrectly, you could drop it and cause
injury.