I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.



Any help would be appreciated.



Thanks.



Jeff

"Jeff Bulach" wrote in message
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.


20 seconds or less

Actually, you know incorrectly. Capacitors charge instantly. What is the
concern is the crankcase heater, and refrigerant liquid diluting the
compressor oil.

24 hours is a good figure.

Since the last folks were moving out, they may have neglected the maint.
Might want to call a HVAC company to come out and do the maint. Clean the
coils, check the freon, etc.

--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"Jeff Bulach" wrote in message
...
I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.



Any help would be appreciated.



Thanks.



Jeff

Unless you have a couple pounds of refrigerant in the oil. And then you
might be in for some expensive repairs.

--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"Edwin Pawlowski" wrote in message
news:xJ8ge.106$PH3.13@trndny06...

"Jeff Bulach" wrote in message
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.


20 seconds or less

Crank case heaters boil the refrigerant out of the oil prior to startup so
it won't cause problems.
There are three types of compressor crank case heaters
One fastens on the bottom, one wraps around it near the bottom, and one
inserts into it.

If it has a crankcase heater I would leave the breaker on 24 hours before
spring startup.
It can take considerable time to get the oil hot enough to begin to boil the
liquid refrigerant out of the compressor oil.

How cold does it get at night? How long have nights and daytime been warm?
Some A/Cs' don't have crankcase heaters.
- udarrell
--
Air-Conditioning Manufacturing Companies - "Adding Real Utility Marketing
Values to A/C Equipment"

http://www.udarrell.com/aircondition...companies.html


"Jeff Bulach" wrote in message
...
I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.



Any help would be appreciated.



Thanks.



Jeff

"Jeff Bulach" wrote in message
...
I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.

Any help would be appreciated.

Thanks.

Jeff


This is Turtle.

Just about every brand condensers I have ever installed had on the paper work
this. Wait 24 hours with power on before operating when you have had the 220
power off for more than 24 hours. So wait 24 hour and be sure.

TURTLE

Jeff Bulach wrote:
I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.



Any help would be appreciated.



Thanks.



Jeff



Huh? I think someone had been smoking something
before they made up those theories. What do you
think flipping the main breaker energizes? Hint:
nothing. Nothing happens to your A/C until the
thermostat turns it on. So, by the time you flip
the main switch and walk to the thermostat to turn
it will be just fine. Maybe you are thinking
about the length of time you should wait after
moving a refrigerator/freezer before plugging it in.

"George E. Cawthon" wrote in message
...
Jeff Bulach wrote:
I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.
Jeff



Huh? I think someone had been smoking something before they made up those
theories. What do you think flipping the main breaker energizes? Hint:
nothing.

Not so fast....

If a unit has a crankcase heater, it is energized all of the time. It is
connected to the line side of the contactor. In other words, even when the
unit is not running, the crankcase heater IS. (As long as there is power to
the unit).....

Crankcase heater.....

http://www.ho****t.com/crankcas.htm

As you are obviously ignorant of HVAC systems, here is a chance to add some
small knowledge.
--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"George E. Cawthon" wrote in message
news:xhgge.738607

Huh? I think someone had been smoking something
before they made up those theories. What do you
think flipping the main breaker energizes? Hint:
nothing. Nothing happens to your A/C until the
thermostat turns it on. So, by the time you flip
the main switch and walk to the thermostat to turn
it will be just fine. Maybe you are thinking
about the length of time you should wait after
moving a refrigerator/freezer before plugging it in.

Dr. Hardcrab wrote:
"George E. Cawthon" wrote in message
...

Jeff Bulach wrote:

I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.
Jeff



Huh? I think someone had been smoking something before they made up those
theories. What do you think flipping the main breaker energizes? Hint:
nothing.


Not so fast....

If a unit has a crankcase heater, it is energized all of the time. It is
connected to the line side of the contactor. In other words, even when the
unit is not running, the crankcase heater IS. (As long as there is power to
the unit).....



Yeah I forgot about crankcase heaters because my
AC doesn't have one. Where I am you don't turn
the AC on unless it gets warm, so a crankcase
heater is useless and is pretty much a wasted
option. Even if you have a crankcase heater the
overide switch turns it off when the temperature
rises above a certain point. I suppose they are
useful in places where you use the AC at lower
temperatures as a dehumidifier.

"George E. Cawthon" wrote in message
...
Dr. Hardcrab wrote:
"George E. Cawthon" wrote in message
...

Jeff Bulach wrote:

I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.
Jeff



Huh? I think someone had been smoking something before they made up those
theories. What do you think flipping the main breaker energizes? Hint:
nothing.


Not so fast....

If a unit has a crankcase heater, it is energized all of the time. It is
connected to the line side of the contactor. In other words, even when the
unit is not running, the crankcase heater IS. (As long as there is power to
the unit).....

Yeah I forgot about crankcase heaters because my AC doesn't have one. Where I
am you don't turn the AC on unless it gets warm, so a crankcase heater is
useless and is pretty much a wasted option. Even if you have a crankcase
heater the overide switch turns it off when the temperature rises above a
certain point. I suppose they are useful in places where you use the AC at
lower temperatures as a dehumidifier.

This is Turtle

I would not call them a waisted option. I have seen people turn on the cooling
mode in freezing weather outdoors and Blow the valve plates out of their piston
compressor and cost them $700.00 to $1,000.00 by not having one. It keeps the
compressor warm even when your not thinking about it. I would not turn one off
because turning it back on could be a problem in cool or freezing weather, but
not too much in hot weather. There is not too much of the problem when turning
on the power on to operate it but during cold spells it keeps the compressor
warm to be able to start in those cold times without busting the valve plates in
the compressor. The real good of having one comes diuring the whole years when
your using it. Then you have to concider Heat pumps and the compressor running
in cold weather. That little cost of that crank case heater is worth it.

TURTLE

TURTLE wrote:
"George E. Cawthon" wrote in message
...

Dr. Hardcrab wrote:

"George E. Cawthon" wrote in message
...


Jeff Bulach wrote:


I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.
Jeff



Huh? I think someone had been smoking something before they made up those
theories. What do you think flipping the main breaker energizes? Hint:
nothing.


Not so fast....

If a unit has a crankcase heater, it is energized all of the time. It is
connected to the line side of the contactor. In other words, even when the
unit is not running, the crankcase heater IS. (As long as there is power to
the unit).....

Yeah I forgot about crankcase heaters because my AC doesn't have one. Where I
am you don't turn the AC on unless it gets warm, so a crankcase heater is
useless and is pretty much a wasted option. Even if you have a crankcase
heater the overide switch turns it off when the temperature rises above a
certain point. I suppose they are useful in places where you use the AC at
lower temperatures as a dehumidifier.


This is Turtle

I would not call them a waisted option. I have seen people turn on the cooling
mode in freezing weather outdoors and Blow the valve plates out of their piston
compressor and cost them $700.00 to $1,000.00 by not having one. It keeps the
compressor warm even when your not thinking about it. I would not turn one off
because turning it back on could be a problem in cool or freezing weather, but
not too much in hot weather. There is not too much of the problem when turning
on the power on to operate it but during cold spells it keeps the compressor
warm to be able to start in those cold times without busting the valve plates in
the compressor. The real good of having one comes diuring the whole years when
your using it. Then you have to concider Heat pumps and the compressor running
in cold weather. That little cost of that crank case heater is worth it.

TURTLE



Didn't know it would be quite that violent. I
understand the need for a crankcase heater for a
heat pumps because they operated at much lower
temperatures. But operation of a central AC
shouldn't be needed until the ambient temperature
rises above 70 F, and anyone that turns one on
when the temp is less than 60 degrees (assuming it
isn't needed for humidity reduction) should be
shot for general wastefulness. Here, we don't
turn on an AC until maximum daily temp gets above
80 degrees because low night time temperatures
reduce the need for cooling.

I don't know what the standard cutout temperature
(temperature that turns off the crankcase heater)
is, but I would imagine it would be lower than any
temperature I would likely turn the AC on.

"George E. Cawthon" wrote in message
...
TURTLE wrote:
"George E. Cawthon" wrote in message
...

Dr. Hardcrab wrote:

"George E. Cawthon" wrote in message
...


Jeff Bulach wrote:


I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.
Jeff



Huh? I think someone had been smoking something before they made up those
theories. What do you think flipping the main breaker energizes? Hint:
nothing.


Not so fast....

If a unit has a crankcase heater, it is energized all of the time. It is
connected to the line side of the contactor. In other words, even when the
unit is not running, the crankcase heater IS. (As long as there is power to
the unit).....

Yeah I forgot about crankcase heaters because my AC doesn't have one. Where
I am you don't turn the AC on unless it gets warm, so a crankcase heater is
useless and is pretty much a wasted option. Even if you have a crankcase
heater the overide switch turns it off when the temperature rises above a
certain point. I suppose they are useful in places where you use the AC at
lower temperatures as a dehumidifier.


This is Turtle

I would not call them a waisted option. I have seen people turn on the
cooling mode in freezing weather outdoors and Blow the valve plates out of
their piston compressor and cost them $700.00 to $1,000.00 by not having one.
It keeps the compressor warm even when your not thinking about it. I would
not turn one off because turning it back on could be a problem in cool or
freezing weather, but not too much in hot weather. There is not too much of
the problem when turning on the power on to operate it but during cold spells
it keeps the compressor warm to be able to start in those cold times without
busting the valve plates in the compressor. The real good of having one comes
diuring the whole years when your using it. Then you have to concider Heat
pumps and the compressor running in cold weather. That little cost of that
crank case heater is worth it.

TURTLE

Didn't know it would be quite that violent. I understand the need for a
crankcase heater for a heat pumps because they operated at much lower
temperatures. But operation of a central AC shouldn't be needed until the
ambient temperature rises above 70 F, and anyone that turns one on when the
temp is less than 60 degrees (assuming it isn't needed for humidity reduction)
should be shot for general wastefulness. Here, we don't turn on an AC until
maximum daily temp gets above 80 degrees because low night time temperatures
reduce the need for cooling.

I don't know what the standard cutout temperature (temperature that turns off
the crankcase heater) is, but I would imagine it would be lower than any
temperature I would likely turn the AC on.

This is turtle.

You know about the cause and problem that can happen when cranking the
compressors in freezing weather with not crank case heater running on it but
there is 100 of thousands of operator of HVAC thermostats that have not a clue
as to blowing the valve plates of a compressor by turning it on in freezing
weather. The statement about the crank case heater is for the unknowing and not
to the knowing.

TURTLE

TURTLE wrote:
"George E. Cawthon" wrote in message
...

TURTLE wrote:

"George E. Cawthon" wrote in message
...


Dr. Hardcrab wrote:


"George E. Cawthon" wrote in message
...



Jeff Bulach wrote:



I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.
Jeff



Huh? I think someone had been smoking something before they made up those
theories. What do you think flipping the main breaker energizes? Hint:
nothing.


Not so fast....

If a unit has a crankcase heater, it is energized all of the time. It is
connected to the line side of the contactor. In other words, even when the
unit is not running, the crankcase heater IS. (As long as there is power to
the unit).....

Yeah I forgot about crankcase heaters because my AC doesn't have one. Where
I am you don't turn the AC on unless it gets warm, so a crankcase heater is
useless and is pretty much a wasted option. Even if you have a crankcase
heater the overide switch turns it off when the temperature rises above a
certain point. I suppose they are useful in places where you use the AC at
lower temperatures as a dehumidifier.


This is Turtle

I would not call them a waisted option. I have seen people turn on the
cooling mode in freezing weather outdoors and Blow the valve plates out of
their piston compressor and cost them $700.00 to $1,000.00 by not having one.
It keeps the compressor warm even when your not thinking about it. I would
not turn one off because turning it back on could be a problem in cool or
freezing weather, but not too much in hot weather. There is not too much of
the problem when turning on the power on to operate it but during cold spells
it keeps the compressor warm to be able to start in those cold times without
busting the valve plates in the compressor. The real good of having one comes
diuring the whole years when your using it. Then you have to concider Heat
pumps and the compressor running in cold weather. That little cost of that
crank case heater is worth it.

TURTLE

Didn't know it would be quite that violent. I understand the need for a
crankcase heater for a heat pumps because they operated at much lower
temperatures. But operation of a central AC shouldn't be needed until the
ambient temperature rises above 70 F, and anyone that turns one on when the
temp is less than 60 degrees (assuming it isn't needed for humidity reduction)
should be shot for general wastefulness. Here, we don't turn on an AC until
maximum daily temp gets above 80 degrees because low night time temperatures
reduce the need for cooling.

I don't know what the standard cutout temperature (temperature that turns off
the crankcase heater) is, but I would imagine it would be lower than any
temperature I would likely turn the AC on.


This is turtle.

You know about the cause and problem that can happen when cranking the
compressors in freezing weather with not crank case heater running on it but
there is 100 of thousands of operator of HVAC thermostats that have not a clue
as to blowing the valve plates of a compressor by turning it on in freezing
weather. The statement about the crank case heater is for the unknowing and not
to the knowing.

TURTLE


I realize that Turtle, I just get cranked a bit
about some of the extra features and go tilting at
wind mills. Most consumers are so dumb that the
manufacturer have no choice but to include all
sorts of extras to keep the consumer from
destroying the product. As one adds more and more
of these features, however, the more complicated
it becomes, the more break downs and failure that
occur, and the greater the cost of the product.

"George E. Cawthon" wrote in message
...
TURTLE wrote:
"George E. Cawthon" wrote in message
...

TURTLE wrote:

"George E. Cawthon" wrote in message
...


Dr. Hardcrab wrote:


"George E. Cawthon" wrote in message
...



Jeff Bulach wrote:



I have just moved into a house with Central Air Conditioning. The main
electrical breaker was shut off for the winter as recommended. How long
after you switch it back on, should one wait till he decides to use it.
There are certain theories from 20 minutes to 24 hrs, I know it is to
energies the capacitor but I would like other opinions.
Jeff



Huh? I think someone had been smoking something before they made up
those theories. What do you think flipping the main breaker energizes?
Hint: nothing.


Not so fast....

If a unit has a crankcase heater, it is energized all of the time. It is
connected to the line side of the contactor. In other words, even when the
unit is not running, the crankcase heater IS. (As long as there is power
to the unit).....

Yeah I forgot about crankcase heaters because my AC doesn't have one.
Where I am you don't turn the AC on unless it gets warm, so a crankcase
heater is useless and is pretty much a wasted option. Even if you have a
crankcase heater the overide switch turns it off when the temperature rises
above a certain point. I suppose they are useful in places where you use
the AC at lower temperatures as a dehumidifier.


This is Turtle

I would not call them a waisted option. I have seen people turn on the
cooling mode in freezing weather outdoors and Blow the valve plates out of
their piston compressor and cost them $700.00 to $1,000.00 by not having
one. It keeps the compressor warm even when your not thinking about it. I
would not turn one off because turning it back on could be a problem in cool
or freezing weather, but not too much in hot weather. There is not too much
of the problem when turning on the power on to operate it but during cold
spells it keeps the compressor warm to be able to start in those cold times
without busting the valve plates in the compressor. The real good of having
one comes diuring the whole years when your using it. Then you have to
concider Heat pumps and the compressor running in cold weather. That little
cost of that crank case heater is worth it.

TURTLE

Didn't know it would be quite that violent. I understand the need for a
crankcase heater for a heat pumps because they operated at much lower
temperatures. But operation of a central AC shouldn't be needed until the
ambient temperature rises above 70 F, and anyone that turns one on when the
temp is less than 60 degrees (assuming it isn't needed for humidity
reduction) should be shot for general wastefulness. Here, we don't turn on
an AC until maximum daily temp gets above 80 degrees because low night time
temperatures reduce the need for cooling.

I don't know what the standard cutout temperature (temperature that turns
off the crankcase heater) is, but I would imagine it would be lower than any
temperature I would likely turn the AC on.


This is turtle.

You know about the cause and problem that can happen when cranking the
compressors in freezing weather with not crank case heater running on it but
there is 100 of thousands of operator of HVAC thermostats that have not a
clue as to blowing the valve plates of a compressor by turning it on in
freezing weather. The statement about the crank case heater is for the
unknowing and not to the knowing.

TURTLE
I realize that Turtle, I just get cranked a bit about some of the extra
features and go tilting at wind mills. Most consumers are so dumb that the
manufacturer have no choice but to include all sorts of extras to keep the
consumer from destroying the product. As one adds more and more of these
features, however, the more complicated it becomes, the more break downs and
failure that occur, and the greater the cost of the product.

This is Turtle.

Crank Case heater is a old time item to have because they were on the 1950's
models of system then when I was a kid. They saved compressors then just like
today. These Crank case heater are really a item to save compressor today but
mostly in the North where you get minus number on the thermometer readings.

There is a lot of bull on systems today but the crank case heater is still a
good one to have to save compressors.

TURTLE