Re: alfa-digest V7 #320

[Genyee@xxxxxxx]

If you look carefully, I think the low speed resistor read 0.23 ohm,
not 23 ohms !  With 23 ohms resisitor, the motor will not even turn.

Say fan motor is drawing 20A normal, that means it has equvalent resistance 
of 0.6 ohms.  A 0.23 ohm in serial will reduce current to 14A.  But a 23 ohms
will reduce current to 0.5 A.

The old low speed resistor is OK most of the time, It is the old style
connectors which reside on resistor itself that cause the problem.  
Since the resistance value is so low,  any bad connection will cause 
a great deal of heat plus the resistor already generate a lot of heat.  
This cause entire plastic and wires to melt....  You can not soldered 
wires on old resistor either, since the heat will melt the soldering.  
Unless you do brass welding there.

Get new style resistor with new connectors on both sides as well.  Or 
just bypass the resistor( soldering both connectors together ) making 
low-speed fan a high speed.

Karl

>>
In a message dated 12/13/98 4:45:41 PM Pacific Standard Time, owner-alfa-



<< 
 Date: Sun, 13 Dec 1998 16:34:52 EST
 From: VLADDS@domain.elided
 Subject: 164 Cooling
 
 Can anyone explain this to me:
 the "supplementary cooling resistor', the one that generates the low speed,
 shows zero resistance (is marked 23 ohms and my meter cannot detect such low
 anyway), untill i heat it up.Well when it is hot, the switch inside it goes
 "clic" and resistance is infinity.The wiring diagram and the operating
 description in the cardisc don't say a word about termal capabillities of the
 supplementary resistor.The inside switch looks a lot like the safety termo-
 switch of a microwave.
 Thank you
 Vlad
 '91 164 L
 
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