Posted by E Z Peaces on May 7, 2008, 2:30 pm
My BIL has a windmill that charges batteries to power a Trace 4048
sine-wave inverter. He also has a Bosche washer. It worked fine on the
inverter for several months.
After that, the washer wouldn't come on unless something else was
putting a load on the inverter. The washer works fine on grid power.
From a thousand miles away, I imagine two possibilities. One is that
this inverter was not designed to produce a good sine wave when idling.
The other is that a capacitor in the inverter has deteriorated.
Any advice?
Posted by RW Salnick on May 7, 2008, 2:50 pm
E Z Peaces brought forth on stone tablets:
> My BIL has a windmill that charges batteries to power a Trace 4048
> sine-wave inverter. He also has a Bosche washer. It worked fine on the
> inverter for several months.
>
> After that, the washer wouldn't come on unless something else was
> putting a load on the inverter. The washer works fine on grid power.
>
> From a thousand miles away, I imagine two possibilities. One is that
> this inverter was not designed to produce a good sine wave when idling.
> The other is that a capacitor in the inverter has deteriorated.
>
> Any advice?
The inverter may need to be set to be more sensitive to a load. Trace
inverters will stay in idle mode (conserving power) unless they detect
a load.
bob
Posted by Kitep on May 7, 2008, 9:06 pm
> My BIL has a windmill that charges batteries to power a Trace 4048
> sine-wave inverter. He also has a Bosche washer. It worked fine on the
> inverter for several months.
> After that, the washer wouldn't come on unless something else was putting
> a load on the inverter. The washer works fine on grid power.
> From a thousand miles away, I imagine two possibilities. One is that this
> inverter was not designed to produce a good sine wave when idling. The
> other is that a capacitor in the inverter has deteriorated.
> Any advice?
If it was the first possibility, then why did it use to work?
If it's the second, then is it under warranty?
Posted by E Z Peaces on May 7, 2008, 11:37 pm
Kitep wrote:
>> My BIL has a windmill that charges batteries to power a Trace 4048
>> sine-wave inverter. He also has a Bosche washer. It worked fine on the
>> inverter for several months.
>>
>> After that, the washer wouldn't come on unless something else was putting
>> a load on the inverter. The washer works fine on grid power.
>>
>> From a thousand miles away, I imagine two possibilities. One is that this
>> inverter was not designed to produce a good sine wave when idling. The
>> other is that a capacitor in the inverter has deteriorated.
>>
>> Any advice?
>
> If it was the first possibility, then why did it use to work?
It occurred to me that perhaps in the past, there happened to be another
load when he turned on the washer, and the pattern of using that other
appliance has changed. Bob says the inverter's sensitivity may need
adjustment, and maybe that adjustment has changed.
> If it's the second, then is it under warranty?
>
>
I don't know if it's under warranty. I don't know if it uses
capacitance and inductance to filter the output. Maybe it will work
perfectly if I forward Bob's advice.
Posted by Jordan Hazen on May 8, 2008, 4:59 am
>My BIL has a windmill that charges batteries to power a Trace 4048
>sine-wave inverter. He also has a Bosche washer. It worked fine on the
>inverter for several months.
>After that, the washer wouldn't come on unless something else was
>putting a load on the inverter. The washer works fine on grid power.
> From a thousand miles away, I imagine two possibilities. One is that
>this inverter was not designed to produce a good sine wave when idling.
> The other is that a capacitor in the inverter has deteriorated.
>Any advice?
This model of inverter has a "search mode" (the idling state another
poster mentioned), where it sends out AC power only in brief pulses,
in order to detect whether a load is trying to draw any significant
current (in which case the inverter will switch fully-on).
This doesn't work very well with some appliances, though, especially
those with electronic controls.
He might try manually forcing the inverter to always-on before running
the washer. This can be done from the front panel (or remote panel,
if one is connected), by simply pressing the red "ON/OFF MENU" button
several times to move from "SRCH" (search) to "ON".
Don't forget to set it back to SRCH after the washing's done, to avoid
unnecessary battery drain.
--
Jordan.
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> sine-wave inverter. He also has a Bosche washer. It worked fine on the
> inverter for several months.
>
> After that, the washer wouldn't come on unless something else was
> putting a load on the inverter. The washer works fine on grid power.
>
> From a thousand miles away, I imagine two possibilities. One is that
> this inverter was not designed to produce a good sine wave when idling.
> The other is that a capacitor in the inverter has deteriorated.
>
> Any advice?