Hi guys, I just got a 16ft reefer runs Carrier Supra 760. The unit runs fine but it took an hour to pre cool the box from 77 to 40 degrees. It is normal? The box is empty and not a sunny day. Thanks!
Probably ok,check if the ball is floating in the sight glass on the receiver tank and check the evaporator fans make sure they are all turning
If it's a roll up door check the seals around it.