Hoshizaki RM-45-SD Service Manual page 27

DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE
13. Remove the four nuts
that hold in place the
compressor to the
base rails using a
7/16" socket ratchet.
Instructions to Replace Compressor.
14. Remove the
compressor from the
base rails.
15. Not all compressor removal
requires cleaning the low and
high sides of the system.
However, if you suspect that
there are high levels of
contamination, sweep the
system using dry nitrogen at
250 psig.
16. Place the new
compressor on the
base rails