We have a dozen open (no doors) cooler sections in our food courts at a convention center. These coolers sit empty but running about 70% of the time, sometimes for a few days, but more often for a few weeks.
The food courts are temperature controlled to never go below 65F when not in use and most of the time is 80F when not in use.
There are no hand controls on these units. Put power on and the rest is automatic.
I would like to simply turn the power off the units when not in use and turn the breaker on when needed.
One of my fellow workers wants to install oil heaters and controls for these units.
With ambient temperature never being below 65F, oil heaters seem like over kill. There are no heaters installed, but with no doors, the cycle rate keeps everything pretty warm.
What do you think? Heaters or no heaters?
What kind of compressors are they?? Where are they mounted? Self-contained units?? What controls the temperature right now??
Pump them down then forget about them until next use.
Have you experienced any problems in the past?
Why does someone whish to spend money right now?
If they are self contained and never get cold around compressor .... what harm is there in simply unplugging them when not in use?
These are Tyler Medium Temperature Refrigerated Display Cases. self contained 208 volt 6 rla compressors
They have been powered and running empty 70% of the time since installation about 2 years ago.
We just want to turn the power off when not needed and turn the power on the day before a show.
There is nothing in the service manual about this.
Shutting the units off when not in use shouldn't pose a big problem. The condenser and evaporator will both be at ambient 65 deg. which should prevent any problem w/ refrigerant migration. You need to install crancase heaters any time the compressor can become colder than the evaporator during an off cycle, such as a remote condensing unit mounted outside during winter months.
Make it fool proof and someone will make a better fool!