Hi Guys

Wondering can anybody shed some light on a bitzer condensing unit I came across today. I didn't get much time at it so this was just a quick observation.

Bitzer condenser serving a small 3 to 5 degree coldroom. The condenser had some after market alterations. The condenser coil had a second coil mounted on the outside. A stat was set up on the discharge so when the condenser temp got too high a solenoid would bring this second coil into play.

Also the compressor was set up to constantly run. They welded a T piece into the liquid line. They fitted a solenoid to this that when energized would feed an TXV which was piped into the suction . So basically the compressor would constantly run but once the room was at temp it would just be spinning its wheels.

Like I said I didn't get much time with this.

What benefit would there be to having the compressor constantly running?
Why have the second condenser coil? This was done at install so it wasn't something fitted after the fact


Any ideas ?

Cheers