We normally get service calls after the squeaking has stopped. That's because whatever was squeaking is now broke and the caller is now facing a bigger problem than an annoying noise. It is a minor emergency when the kitchen exhaust system completely shuts down. Noises coming from the hood are almost always generated from the exhaust fan since it is the only mechanical or moving part in the hood system. Typical noises are squeaking, tapping, clanking, banging, scraping just to name a few. Of all these noises, squeaking is the only one that has to do with the belt. If the squeaking only occurs when the exhaust hood is first turned on and only lasts for a few seconds, this could be an early size of belt fatigue. Squeaking occurs because the belt is stretching slightly. If the squeaking sound persists, its getting even more loose and its time to call 770-345-1897 and ask us to service your kitchen exhaust system.
The other noises mentioned previously can be more sinister. Exhaust hood fan blades normally rotate at 1750 rpm's and are relatively light weight. If the blade is off balance for any number of reasons vibration occurs. Vibration is death to a fan. It may be a fast death or slow death, but it will die.
The most sinister sounding noise is hard to miss or ignore. If the bearings are going bad on the exhaust hood fan blade pulley the noise is a loud grinding noise. The good news is it can be fixed and hopefully you call us!