Sanyo SPW-CR363GVH8 Service Manual page 221

7. Cautions for New Refrigerant R407C
New refrigerant R407C cannot be used for existing models.
1. Compressor specs are different.
When refilling the R22 compressor with R407C,
durability will significantly decresae since some of
the materials used for compressor parts are
different.
2. Existing piping cannot be used.
Completely cleaning out residual refrigerating
machine oil is impossible, even by flushing.
3. Refrigerating machine oil differs.
Since R22 refrigerating machine oil is mineral oil, it
does not dissolve in R407C. Therefore, refrigerating
machine oil discharged from the compressor can
cause compressor damage.
R22 refrigerating machine oil
R407C refrigerating machine oil Synthetic fluid (ether oil)
Mineral oil (suniso oil)
III - 55
Service Procedures
1172_M_I
R407C
1173_X_S
SM830063
3