Get the lineup all tested for what caused the problem in the first place.
Like for me yesterday it was the gang clock NOT initiating at all. So I replaced the module.
I spoke with store personell and they agreed to let me leave their case empty overnight and I staged three defrosts. I valved off the refr circuit at the rack. And I walked away.
No wet floors. No garden hoses. No orange cones. No liability. No hours of spraying water and soaking fan motors. etc. etc.
I returned this morning to find hot cases. No more ice. and only one fan motor dead.
WOW .... what a relief! A way to defrost these lines WITHOUT having to use water and not having to make a mess!