Wednesday, June 10, 2020

Hunter Zephair B3400 Schematic

Switch Wiring for a Hunter 20" Window Fan

I couldn't post (for free) to the Antique Fan Collectors Assoc. forum (www.afcaforum.com) and collaborate on this little rehab project so I'll at least post it here.

I haven't confirmed the position of the switches so "up" and "down are relative to the schematic, and not the physical position of the switches themselves.

The SJn jumpers are a convention I have to use to use with Eagle PCB to effectively allow two names or labels (wire colors) to connect to one node.

L1 and L2 are line and neutral from a 2-wire ungrounded, unpolarized 120V power cord that connects to a standard wall outlet. There are no 240VAC connections here.

The capacitor has two green leads as it is unpolarized and is stuffed into the junction box with the switches.

Note: I've just started to work with this and I'm not matching this to what I would expect to see for motor terminals and windings. Visibility of the switch connections is not great so there may well be errors. EDIT: Correction - the OFF position is on SW2-HIGH/OFF/LOW.


This simplified to this diagram:
Simplified Schematic

which clearly shows the starter capacitor being between line and neutral half of the time which makes no sense to me. I'll correct the schematics when/if I find the error.

Edit: The fan's power cord has been replaced and the fan tested for functionality and ground faults. It is on its way back to the cottage so there will be no further updates.

2 comments:

  1. Hi there, I have the same fan, B3400B and it has started rattling during operation. I disassembled the motor and found some loose ball bearings rolling around. Any idea how to take the old bearing out and any idea where to get new bearings? Thanks!

    ReplyDelete
  2. Hi Bill. I poked around the www.afcaforum.com site and didn't find anything specific. I'll suggest joining that site and posting your questions there - some of those folks have a wealth of knowledge regarding old Hunter fans. Good luck!

    ReplyDelete

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