We have an Xpelair extractor fan in our conservatory to try and dump excess heat. It is now 4 years old and seems to run rather more slowly than it used to.
Can I take off the inside cover, and oil the bearings? There are 2 screws, top and bottom on the cover. If I remove these will I be able to carry out such a service and clean it up as well?
Thanks in advance for help. John In limine sapientiae