chinese generator plus waeco=nothing

Submitted: Sunday, Mar 07, 2004 at 10:06
ThreadID: 11066 Views:3664 Replies:7 FollowUps:3
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Has anyone experienced trouble with a waeco on the chinese generator. My waeco justs does not want to start. You can feel the compressor trying to kick in but it fails and it keeps doing this every approx. 10 seconds. This happens on 12 and 240. Take the fridge back to an ordinary battery and ordinary 240 and the thing runs perfectly.
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Reply By: Member - Moggs - Sunday, Mar 07, 2004 at 10:53

Sunday, Mar 07, 2004 at 10:53
Yep, the Waeco draws too much on start up. Leave the fridge hooked up to the battery and at the same time hook the battery up to the genny.
AnswerID: 49428

Follow Up By: Member - Moggs - Sunday, Mar 07, 2004 at 10:54

Sunday, Mar 07, 2004 at 10:54
In addition, could be quite harmful to the Waeco being hooked straight to the genny - re: surges - much better to always use the battery
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Reply By: bob - Sunday, Mar 07, 2004 at 11:08

Sunday, Mar 07, 2004 at 11:08
It sounds strange that your generator does not have enough power to run your waeco. Im guessing your generator is rated around 600-800 watts which is overkill for a single fridge. Does your generator have trouble running other equipment? I think your genny might be a dud
Personally I am a little reluctant to run an expensive fridge off a 240v generator that does not have a pure sine wave.
AnswerID: 49429

Follow Up By: joc45 - Sunday, Mar 07, 2004 at 11:43

Sunday, Mar 07, 2004 at 11:43
The 12v DC aux output capacity (watts) of portable alternators is often much lower than the AC output. May be something to do with limiting current when charging batteries, or the regulator design, which puts emphasis on regulating the 240v output, with the 12v coming in a poor second. It would certainly be a factor in not being able to start the Waeco.
Gerry
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FollowupID: 311244

Reply By: William - Sunday, Mar 07, 2004 at 11:35

Sunday, Mar 07, 2004 at 11:35
Your Chinese generator is only designed to charge batteries, not to run appliances.
You are lucky you did not wreck your Waeco.
You must have a battery connected to the Chinese generator while running your Waeco.
AnswerID: 49431

Reply By: DenisL - Sunday, Mar 07, 2004 at 13:24

Sunday, Mar 07, 2004 at 13:24
Thanks for the response. I sort of figgured hooking the gen to the battery and then to the fridge might be the way to go so you guys confirmed.
AnswerID: 49436

Reply By: Meggs - Sunday, Mar 07, 2004 at 15:45

Sunday, Mar 07, 2004 at 15:45
Your generator should have no trouble running your fridge direct off the 240. The output must be in the range 230 to 250 but most importantly it must be 50hz. A mate of mine bought a fairly expensive generator and it ran at 220v and 48hz so he had to take it back for adjustment. I don't know about the 12 v but it could be like the 12 v on outboard motors in that it is just half wave and no regulator quite adequate for battery charging.
I am thinking of buying one of these generators but from what I have seen and read the factory did away with the quality control checking and passed that job on to the customer so check on the generator and get a frequency meter and watch what happens when you start the fridge as the governor of the engine should increase the throttle opening to maintain 50hz. As well get a resistive load the same as the generator output (toaster, frypan, heater etc) and switch it on and observe the frequency and voltage response, it should dip with such a high load but should then recover to 240 and 50hz if not take it back as it did not pass your quality control test.
The best way to run fridge's is to have a good a battery charger and use 240v to run the charger and have the battery in parallel with the fridge and the charger as transformers are more tolerant of frequency and voltage swings.
AnswerID: 49443

Follow Up By: Member - Brett H (QLD) - Sunday, Mar 07, 2004 at 20:10

Sunday, Mar 07, 2004 at 20:10
Frequency is related directly to engine speed.
These small generators usually run a 3000rpm = 50 Hz

The governors on these small units are very crude and it is acceptable to have them run at 53 Hz at no load and as low as 48Hz at full load.
Volts will drop a bit as (in general) these little units are capacitor excited and not AVR excited therefore their voltage response will be a little lazy.

It is possible that the frequency is a bit low and the electroncs in the Danfoss controller will not allow the compressor to start.

On way to test frequency is by a 240volt clock with a second hand. The second hand should complete one complete revolution in exactly 1 minute if the supply is 50 Hz. Every 1 Hz = 60 rpm.

Dick Smith has very cheap Digital Multimeters that read frequency
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FollowupID: 311271

Reply By: ianmc - Monday, Mar 08, 2004 at 11:38

Monday, Mar 08, 2004 at 11:38
From my experience with a Waeco & previously a Trailblazer I think the manufacturers recommended the the frig's must be run off a battery probably for some of the above stated reasons. If all else fails read the instructions!
AnswerID: 49509

Reply By: Member - Jeffrey - Monday, Mar 08, 2004 at 23:34

Monday, Mar 08, 2004 at 23:34
Hi DenisL,
these chinese genys seem to be ok, but the main thing most folk overlook is the start up wattage small apliance draw,so if your waeco requires,lets say 800/900 watts to start the ball rolling it's not going to do it! you have to know how much power is needed and keep within it"s capabilities,startup compared to running ,running power once started is generally much less so apliance with high start draw conect one at a time let settle and conect the next,bbut remember do not exceed the rated wattage output of the geny and you will run most of your toys.the wattage draw/amount is generaly under the apliance or marked some where.Hope this helps.
All The Best In Health Annd Wealth
Jeffrey (AKA JD)
AnswerID: 49616

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