R23 Cascade

[shaun spencer]

did insalls for russells technical products. they are (were been 10 months) using R404 in high stage. R23 in low stage.
have done many retros using R23 as it the price is so much better than suva95. with Carlysle compressor being the norm, i go back to old style valve plates (better discharge temp) a t/c and a watlow control to monitor discharge temps.
Thermotron advocates the use of an extra expansion tank with R23 - a money grab IMHO. Have done over 100 retros to R23 and exisiting expansion tank with no problem.i have a apreferance for R507 (AZ50) as it doesnt have the glide problems associated with R404 (HP62) in high stage

[David Gethsame]

i have a apreferance for R507 (AZ50) as it doesnt have the glide problems associated with R404 (HP62) in high stage

Whats a 'glide problem'

[Brian_UK]

Whats a 'glide problem'

Glide is the temperature difference (slope) between the different components of the refrigerant concerned. Generally when the refrigerant is condensing or evaporating.

Try this link for more info http://www.suva.dupont.ca/H45938-3.pdf