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Blower replacement

A project log for Apartment ventilation system

The 25 year battle to get fresh air in tiny apartments

lion-mclionheadlion mclionhead 02/04/2024 at 03:450 Comments

After 20 years, the original Hunter started squeaking more & more, regardless of lubrication.  After a failed attempt to build a custom blower, 1 of the last used hunters arrived, with enough spare parts to supply the rest of the lion kingdom's renting years.  The new motor didn't fit the old enclosure so the decision was made to replace it, altering the new enclosure as minimally as possible.  It would be a shame to completely destroy 1 of the last hunters.

Repeated some of the modifications done 20 years ago.  Using lessons learned, JB welded the switch standoffs to get ahead of the cracking.  Modified the shape of the outlet to conform to the nozzle.  JB welded in nuts for the nozzle.  Added XT60 connectors to the wiring to make it possible to clean.  

Using lessons learned, marked the orientations of the switches.

Decided to give the stock filter assembly a try.  Young lion destroyed the previous one to stack 2 filters & make it easier to clean.  They were being made in the zillions, in those days.  It'll probably have to be ground flat & the painstaking packing tape used again.

Scrapped the ionizer since it deposited soot everywhere, but it left behind a 7kV transformer.







It's easy to imagine grinding holes in the front panel to reduce the cleaning, while still using it to support the inlet.

The nozzle adapter leaked so much less on the new one, it didn't need any duct tape.  Sadly, it seems to move less air than the old one.  It might have been a compromise to use an ionizer or the nozzle adapter might not be as efficient.

The old one will probably never be used again though lions imagine it being used in a bigger space. 

Filter after 3 months.

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