I purchased a refrigerator 8 months ago, but it will not be used right away. It came directly from the showroom. Must I use it now, or I can wait longer before using it?
Clean empty refrigerators should be stored upright and kept dry. You should prevent moisture building up inside the stored refrigerator - perhaps by removing the door or by keeping the door open.
The manufacturer's instruction booklet may have a section on storage.
Unused refrigerators are a potentially fatal hazard for children, who may get trapped inside. For this reason doors should be removed, locked closed or prevented from being closed (using a child-proof mechanism).
If your refrigerator was stored upright, then plug it in and see if it works. Plugging it in isn't going to harm it. And if there is something wrong with it you will need to turn it on to diagnose.
If your refrigerator was stored any other way find the manufacturer's guidelines on how long it needs to be upright. This may range between 15 mins to 1 day. If you can't figure out the manufacturer or make and model then leave it upright for a day before using. It would generally be good practice to cleaning it before turning it on too.