Epson Stylus Pro 7800 User Manual page 316

When you set up the printer and perform a nozzle check and
realign the print heads after transporting, see "Setting up the
printer after transporting it" on page 317.
To move the printer using casters
When you want to transport the printer a very short distance such
as within the same room, you can slide the printer on its casters.
Caution:
c
Do not slide the printer on angled or uneven surfaces.
1. Make sure that the power cord, interface cable, roll paper
spindles and sheet media are removed, and the roll paper
cover and front cover are closed.
Note:
If you only need to transport your printer a very short distance using
the casters, you do not need to remove the ink cartridges.
2. Fully insert the upper hooks and put up the lower shafts as
shown below.
316
Maintenance and Transportation