Coast Resorts Open Roads Forum: Dometic v.s. Duo-Therm Hard Start Kit - yikes, help....
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 > Dometic v.s. Duo-Therm Hard Start Kit - yikes, help....

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MEXICOWANDERER

las peƱas, michoacan, mexico

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Posted: 08/08/16 10:13pm Link  |  Quote  |  Print  |  Notify Moderator

TexasChaps wrote:

Micro1706 wrote:

TexasChaps wrote:

.. but a single phase soft start for this application will cost around $220 US .. not a lot for what it is and much easier on your compressor than a hard start kit.. and less stress on the genny too...

I have one fitted to my system and the difference is HUGE..


Not sure what one looks like?
Any link possible to such an animal?
Supplier, mfg? Appreciate the suggestion.
will check them out
thanks
Bob


http://www.hypereng.com/


I have several of the single phase units as sold here..

http://www.gen-pro.biz/#!shop/cs2b

one is installed on my Coleman mach a/c.



Kudos! This really is the best way to go IMHO. It will start a compressor with lower line voltage than simple upgrading of a capacitor. Also these things VASTLY increase the life of a capacitor. Bookmarked the link!

liborko

Surrey, B.C.

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Posted: 08/08/16 10:01pm Link  |  Quote  |  Print  |  Notify Moderator

If you have an inverter/charger like Prosine 2.0 and it is properly installed, try to start A/C with inverter ON. Normally when generator is running the inverter is in STAND-BY mode. When the compressor bogs down the generator, the inverter takes over for a moment and A/C start instantly. Totally painless.

TexasChaps

Texas

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Posted: 08/08/16 06:24pm Link  |  Quote  |  Print  |  Notify Moderator

Micro1706 wrote:

TexasChaps wrote:

.. but a single phase soft start for this application will cost around $220 US .. not a lot for what it is and much easier on your compressor than a hard start kit.. and less stress on the genny too...

I have one fitted to my system and the difference is HUGE..


Not sure what one looks like?
Any link possible to such an animal?
Supplier, mfg? Appreciate the suggestion.
will check them out
thanks
Bob


http://www.hypereng.com/


I have several of the single phase units as sold here..

http://www.gen-pro.biz/#!shop/cs2b

one is installed on my Coleman mach a/c.

Micro1706

Sandpoint, Idaho

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Posted: 08/05/16 05:58pm Link  |  Quote  |  Print  |  Notify Moderator

TexasChaps wrote:

.. but a single phase soft start for this application will cost around $220 US .. not a lot for what it is and much easier on your compressor than a hard start kit.. and less stress on the genny too...

I have one fitted to my system and the difference is HUGE..


Not sure what one looks like?
Any link possible to such an animal?
Supplier, mfg? Appreciate the suggestion.
will check them out
thanks
Bob

TexasChaps

Texas

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Posted: 08/05/16 04:30pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

three options

A. hard start capacitor
B. hard start capacitor and relay to delay compressor starting
C. soft start (much money)


depends on what you deem "much money" .. but a single phase soft start for this application will cost around $220 US .. not a lot for what it is and much easier on your compressor than a hard start kit.. and less stress on the genny too...

I have one fitted to my system and the difference is HUGE..

pianotuna

Regina, SK, Canada

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Posted: 08/05/16 04:15pm Link  |  Quote  |  Print  |  Notify Moderator

I can report that the Sola Basic autoformer works well with shore power.

On a thirty amp shore power supply, before the air conditioner was started voltage was 115. Without the autoformer it dropped to 105.

With the autoformer in the circuit voltage actually rose from 115 to 118.

I'm sold!


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

Micro1706

Sandpoint, Idaho

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Posted: 08/05/16 12:53pm Link  |  Quote  |  Print  |  Notify Moderator

Hoping this weekend to remove cowling and take a look. Will also take photos of the wiring diagram.
Many thanks to all
cheers
Bob

Micro1706

Sandpoint, Idaho

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Posted: 08/05/16 12:51pm Link  |  Quote  |  Print  |  Notify Moderator

Chris Bryant wrote:

What does the generator do when the compressor starts? There will almost always be a small voltage drop on compressor start- while the start kit lowers the current needed, it will still be at or a bit over the limit of the genset. This kit will do as good or better than any kit with the exception of the high dollar electronic smart start.


Since I have not measure anything, all I can say is that it totally shuts down the adequate power supply to keep the LED's on, on the new unused microwave. When it starts the yammy really struggles...but it does start.
I start it with the thermostat (small dial) set to 1/2, and the fan knob set to minimum.
It starts (the genset then sounds very struggling, almost stopping, but then catches up), inside followed by a small beep as the microwave turns on and the led's light up again.
the genset has only about 7 hrs on it...could the break-in period be a factor?

Went by the town auto electric, strong outfit, 30yrs in business, rave reviews and specialize in auto air. Very clean outfit with a couple more mature and seemingly experienced gentlemen at the helm and doing the work. They knew the Brisk Air II and were looking at the Duo Therm hsk manual. They both seem to come to the same conclusion that the ptsc part should in fact be removed, physically. He has agreed to go over the install. They are a couple weeks out.
Luckily, the north Idaho weather is now as pleasant as could be, and a/c is not necessary!

It was very evident during the prior tech's attempt to install, the predominant feeling was being a bit unsure. As such, since this is so far out of my league, we feel best having the installation gone over by folks with a higher degree of experience and confidence.

This town (Sandpoint) is pretty small, and having anyone at all who would be willing to do the install was hard to find, so we went with the first outfit, a big box tire store by the hiway which provided additional services, but I have a feeling this was the first time they had opened a B.A. II.
All the same, we are hopeful the 2nd time's the charm.
Will keep the a/c off until then.

Many thanks for the help, advice, and suggestions.
Looking forward to being able to update with even better news in a couple weeks.
cheers
Bob

j-d

Sunny Florida USA

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Posted: 08/05/16 12:48pm Link  |  Quote  |  Print  |  Notify Moderator

If you get up there and into the capacitor area, look around for the wiring diagram and please take a pic of it also.


If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB

Chris Bryant

Arden, North Carolina

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Joined: 03/26/2003

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Posted: 08/05/16 12:00pm Link  |  Quote  |  Print  |  Notify Moderator

What does the generator do when the compressor starts? There will almost always be a small voltage drop on compressor start- while the start kit lowers the current needed, it will still be at or a bit over the limit of the genset. This kit will do as good or better than any kit with the exception of the high dollar electronic smart start.


-- Chris Bryant

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