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Posted By MLong
I have been asked by a colleague to look into this.
They have recently had to decommission an extractor fan in one of our scheme properties due to it overheating and presenting a fire risk.
Does anyone on here have any information/web addresses where I could investigate this a bit more i.e. is it a common occurrence, is there evidence of fires being started due to overheating fans etc. HSE site hasn't been useful and Google has given me a newspaper article from a couple of years ago.
Many thanks in advance
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Posted By SBH
Is this a case of poor maintenance?
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Posted By MLong
Unsure is the honest answer. It probably contributes to it, but I wouldnt want to put it as the sole reason.
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Posted By Paul Skyrme
Hi,
Just a few quick comments, hopefully to help.
The only real reason for an extract fan to overheat from an engineering standpoint, is electrical defect, mechanical defect, either due to lack of maintenance or catastrophic failure, or excessive load, which in fan systems can be caused by ducting or damper settings. Got to stop there with the ducting side as not an air handling specialist.
However, most motors these days unless very large have sealed bearings, so these do not need lubrication.
Please note I am including contamination as a mechanical defect.
HTH your thought process
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Posted By Ron Hunter
Lack of maintenance. I have that particular T-Shirt.
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