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07-31-2016, 11:58 PM
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#1
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Rivet Master
2005 25' Safari
Salem
, Oregon
Join Date: Mar 2006
Posts: 8,378
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11,000 BTU Penguin problem.
Hi, today while tinkering with my trailer, it was getting hot inside. So I turned on my air conditioner and all I got was a humming noise. I tried it a few times and my air condition just wouldn't work. I'm plugged into my 30 amp service and my Kill-A-Watt showed 120 to 121 Volts AC. I then removed my inside air conditioner cover to see if I could see anything. In the back of the unit, I could see the squirrel cage. [fan] Because I have a heat strip, it was difficult to get my fingers in there. But I was able to touch the fan and turn it. It seemed to be stuck. After that, I turned my air conditioner back on and it worked perfect.
After a lot of internet searching, I found basically nothing helpful. My question at this time, is; Does my air conditioner motor have an oil port, sealed bearings, or bronze bushings? Does my motor need to be lubed or replaced?
Thank You for any advice or help with this concern.
__________________
Bob 2005 Safari 25-B
"Le Petit Chateau Argent" Small Silver Castle
2000 Navigator / 2014 F-150 Eco-Boost / Equal-i-zer / P-3
YAMAHA 2400 / AIR #12144
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08-01-2016, 06:01 AM
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#2
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Rivet Master
1956 22' Flying Cloud
1953 32' Liner
1955 22' Safari
Valley View
, Texas
Join Date: Jan 2006
Posts: 3,971
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Dirt Daubers will cause that to happen. When you moved the fan the dirt broke loose and allowed the fan to operate. A good hosing down will wash away the Dauber nest if thats the problem.
__________________
"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."
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08-01-2016, 06:49 AM
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#3
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Overland Adventurer
1991 34' Excella
2009 34' Panamerica
Telluride
, Colorado
Join Date: May 2012
Posts: 2,476
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Those 3 speed fan motors are prone to failure.
They are cheap on Amazon. Ive seen them sold with the hard start cap for around $115. If youre going to have trouble now it will happen again.
I would replace it before you get stick without air.
After getting on the roof, its a half hour fix.
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08-01-2016, 07:19 AM
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#4
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Rivet Master
2008 25' Classic
Full Time
, Texas
Join Date: Nov 2012
Posts: 4,309
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It's possible there is a bad spot on the commutator of the motor. I doubt these fan motors are brushless. Just rotating the fan moved it off the bad spot. Probably best to replace as mentioned before.
Kelvin
__________________
2008 Classic 25fb "Silver Mistress"
2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
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08-01-2016, 07:31 AM
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#5
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Rivet Master
1974 Argosy 26
Morrill
, Nebraska
Join Date: Nov 2009
Posts: 6,014
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Air conditioner motors are AC 120 volt. They are not universal or DC motors and therefor have no brushes. They do have start and run capacitors which can go bad. If you have a bad capacitor the motor may not start especially if there is much mechanical resistance.
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08-01-2016, 09:07 AM
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#6
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Rivet Master
2008 25' Classic
Full Time
, Texas
Join Date: Nov 2012
Posts: 4,309
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I didn't know that. Thanks for that information.
Kelvin
__________________
2008 Classic 25fb "Silver Mistress"
2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
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08-01-2016, 11:04 AM
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#7
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Wise Elder
2010 30' Classic
Vintage Kin Owner
South of the river
, Minnesota
Join Date: Dec 2009
Posts: 4,169
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Quote:
Originally Posted by ROBERTSUNRUS
Does my air conditioner motor have an oil port, sealed bearings, or bronze bushings? Does my motor need to be lubed or replaced?
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The fan motor in the Dometic Penguin has sealed ball bearings. I would recommend replacement of the fan motor when the next reasonable opportunity presents itself, since the bearings are not intended to be serviceable.
Quote:
Originally Posted by Melody Ranch
Dirt Daubers will cause that to happen. When you moved the fan the dirt broke loose and allowed the fan to operate. A good hosing down will wash away the Dauber nest if thats the problem.
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While that is a possibility, the more common problem is corroded bearings.
Quote:
Originally Posted by KJRitchie
It's possible there is a bad spot on the commutator of the motor. I doubt these fan motors are brushless. Just rotating the fan moved it off the bad spot. Probably best to replace as mentioned before.
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Quote:
Originally Posted by TG Twinkie
Air conditioner motors are AC 120 volt. They are not universal or DC motors and therefor have no brushes. They do have start and run capacitors which can go bad. If you have a bad capacitor the motor may not start especially if there is much mechanical resistance.
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Like most air conditioners, the Penguin uses a permanent split capacitor (PSC) motor for the fan. There is no commutator. Also, there is no start capacitor as such, just a "run" capacitor that stays in circuit at all times.
In essence the PSC motor is an induction motor that is designed in such a way that it never comes anywhere close to its synchronous speed, so an oil-filled capacitor is used to maintain a rotating magnetic field in the same way that a starting capacitor is typically used, except that the capacitor remains in the stator circuit all the time rather than being switched out when the motor approaches its synchronous speed.
They are widely used as blower motors because they last a long time and can be easily operated at more than one speed. Lower speeds are usually achieved using different stator taps, but can also be achieved with a loading coil, SCR, or other simple electronic control.
__________________
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