Linde H25D? I didn't hear about this model for a while. Air-conditioning for it? Hmm, I'd suggest you buy an aircon at the place you keep it. It would help a lot, I guess. When the air in the area you own it will be cold, you won't have any problems with this stuff. You should check http://airconservicing.org because recently I was looking for an air conditioner, and found that website. Let's hope that you won't have any more issues with your Linde and its options. Also, don't freeze the place. It can break something in the motor.