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OT refrigerator question

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IaGary

02-28-2007 04:51:01

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When the power was off here we were using a generator to power the frig.and freesers to keep them cold.

The second time I hooked up the newest frig in our house it would not run.And would never take off on 3 later attempts.

So I figured I burned it up with the generator.

Well when the power came back on I plugged it into the wall and it took off.

I know I always had power to it from the generator so thats not it.

Is there some kind of a sensor in these newer ones that if the voltage is not quite right it will not start?

Some kind of surge protector or something?

Gary

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buickanddeere

02-28-2007 21:26:13

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 04:51:01

Even a 6500W generator may not have the guts to start a reciprocating compressor. In any case you have to wait 20 minutes and better 30 minutes between tries. The compressor if trying to start against head pressure will not startup even with a 750MW generating station on the other end of the appliance plug

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RayP(MI)

02-28-2007 18:27:42

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 04:51:01

If a refrigerator is running when power goes off, the pressure in the system needs to equalize (bleed down) before pump motor will start again. Like statring an air compressor without a bleed down valve. Motor doesn't have the guts to start up under load, and will trip internal overload. Wait ten or fifteen, and see if it will start.

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Butcher

02-28-2007 14:32:31

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 04:51:01

Ours did the same thing. Turns out it was just the defrost cycle. Sounds like we got more ice on the way.

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RAB

02-28-2007 08:46:46

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 04:51:01

Apart from newer electronics stopping it starting, so as to speak, you may also not have enough back up from the genny at motor start-up. Some of these motors take 5 or 6 times running current at initial start. If the volts are pulled down the overheat trip may just trigger before it starts. You don"t say how big the genny is and how much other load is on it already. Fridge may start if it is the only load. We had a small genny which would only start our freezer if it was throttled up while the freezer was turned on. Once on, and left on superfreeze setting, it would run all day.
Regards, RAB

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IaGary

02-28-2007 09:11:41

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Re: OT refrigerator question in reply to RAB, 02-28-2007 08:46:46

It is a 6500 watt peak surge.

Nothing else was plugged the third time I tried it.

Second time the freezer mite have already been plugged in.

Also had its own cord direct to the 20 amp plug on the geny.

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Tom R Ne

02-28-2007 11:26:25

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 09:11:41

Does your Generator have the automatic idle down circuit? If it does you will need to override that feature (if the unit is equipped with a bypass switch) or plug a light or something else in before you try to start a motor load so that the Generator comes up to speed to get the voltage and frequency correct before you attempt to start a motor.

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IaGary

02-28-2007 12:02:54

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Re: OT refrigerator question in reply to Tom R Ne, 02-28-2007 11:26:25

No idle down on my geny.

No trottle of any kind just a governor.

The electric power is right there when its needed.

Gary

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RAB

02-28-2007 09:31:57

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 09:11:41

Mine was a 800W machine!
Regards, RAB

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RAB

02-28-2007 09:39:30

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Re: OT refrigerator question in reply to RAB, 02-28-2007 09:31:57

Oh, and forgot to mention that a lot of gennys don"t give out full voltage until an appreciable load has been applied after start up. May or may not apply to yours, I don"t know.
Regards, RAB

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Tim, OHio

02-28-2007 08:39:18

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 04:51:01

Gary,

You can buy a line conditioner which should
solve the problem. They have them at Home
Depot or you can look them up on line.
They will condition the voltage so there are
no peaks or troughs. Electronics are sensative
to these fluctuations.

Tim, Ohio

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jdemaris

02-28-2007 08:31:53

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 04:51:01

I know any specifics on your refrigerator or your genset. But, some newer appliances MUST have grid-quality 120 VAC with 170 volts at the peaks of the cycles. The includes several newer refrigerators, washing machines, just about all battery chargers, etc. Most AC gensets only put 150 volts on the peaks. So, some things will not run.
The way around is - either use a voltage enhancer that raises the peak VAC by 10 %, or use a better genset. Some modern electronics will not run from any AC Gensets - except the "inverter" series that Yamaha, Honda, et. al sell. Those pricey inverter gensets are actually DC, not AC, but they run it through a full-wave inverter.

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NEsota

02-28-2007 08:08:31

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 04:51:01

Here is schematic to reference 60 cycle line with a generator.
Lights will flash on & off until your generator gets in synk.
Please try this at home before your next power failure:

115 line V 60C----- light bulb----light bulb----- 115 V generator out +/- 60C

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massey333

02-28-2007 06:15:05

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 04:51:01

This may not be all true in your case,but with these new Electronic things,it is CYCLES_CYCLES-CYCLES,if it isn't 60 cycles IT may not run.Buy a good frequency meter to be sure.Camping World or a camping supply place have a good plug in one called GOOD GOVERNOR METER(which read volts or Cycles or both)About $100.Cycles is the Secret.Hope this might help.I have one at every location that has a Gen.to check up on the Gen.Cycles meters.

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Big M

02-28-2007 05:45:17

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 04:51:01

Here is what I ran into on a ref. several years ago during a power outage at a friends house. He had started a standby generator and told me everything worked except the ref, he must have burned it out. Power had went off during the night when the frostless ref. was in the defrost cycle. There is a 24 hour timer down under the front of the ref. that we advanced with a pocket screwdriver and the unit started up right away. Screw is designed so it can only be moved foreward and service delivery man is supposed to set if for about 3am defrost cycle. When I pulled the bottom grate off to check the timer, the lady of the house was VERY upset that I had found dirt and lint in her house.

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IaGary

02-28-2007 09:07:35

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Re: OT refrigerator question in reply to Big M, 02-28-2007 05:45:17

You want to see dirt.

You should have seen ours.

Darn dust bunnys everywhere.

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EddiePetty

02-28-2007 05:40:24

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Re: OT refrigerator question in reply to IaGary, 02-28-2007 04:51:01

Gary, If your unit was anewer type with solid state circuitry, it, has well as the "puter, VCR/DVD/ and who-knows-what else is/are extremely sensitive
to voltage and frequency. The WORST thing you can do is allow a generator to run out of fuel and coast to a stop. Frequently, circuit cards will short-out, or trip-out if so protected once voltage and/or frequency exceeds parameters. If your unit started once line voltage was available, consider youself luck....check you other stuff though !! ( Don"t ask me how I burned-out my Directv box) Ed in "ol Virginny

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