[Johnson] Desk KW fan

[Craig C. Heaton]

Rodger,

Sorry to hear about the fan motor! Ouch! The Johnson Viking '500' and Desk
KW use the same motor, part #22.1079-1. My guess here is to have the motor
rewound. To owners of these rigs; there are places, one little hole on each
of the bearings to apply a light lubricant. A fiber material surrounds the
bearings and oil needs to be applied once in a while in order for the shaft
to spin smoothly.

My '500' started to get noisy one day, what a pain to get the fan out where
I could get some oil to the bearings! The two fans in the RF section of the
Desk KW should be a real treat also, don't ask me how I know.

This will be a good thread to watch, I've got five of those fans to keep
spinning.

73's
wd8kdg
Craig 

-----Original Message-----
From: johnson-bounces at mailman.qth.net
[mailto:johnson-bounces at mailman.qth.net] On Behalf Of Rodger
Sent: Sunday, October 26, 2008 6:42 AM
To: johnson
Subject: [Johnson] Desk KW fan

Good morning all,

The lower pedestal fan in my Desk KW developed a short in the winding 
and went up in smoke.  Has anyone come across a source of replacement 
fan motors for these?  I cannot find any identification anywhere on the 
fan assembly as to maker, RPM, etc.  I suppose I could have the coil 
rewound but the bearings probably should also be replaced so if I could 
find a source I would like to find a new replacement.  Any advice and/or 
leads appreciated.  By the way, when the fan motor goes it really 
develops a lot of smoke and smell.  It made me realize that if something 
catches on fire inside the pedestal it could be a big problem.  I do 
have the main shutoff switch for the 240 volt feed nearby and I guess 
there isn't a lot that would really burn well inside the pedestal but 
given this experience I am only using one of the two thumbscrews to 
secure the cage inside the pedestal and a fire extinguisher is in one of 
the desk drawers.

I am probably being paranoid after this experience but if I were really 
paranoid I would be investigating an on-board halon system :)

73, Rodger WQ9E
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