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#1
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Dehumidifier On & Off Period Feature
Hi,
Does anyone know if there is a dehumidifier, instead of using a humidistat setting, allows you to set the time on and the time off? Example: Set the dehumidifier to run for a half hour, then be off for an hour. This cycle repeats over and over. Thanks in advance, Brad Before you type your password, credit card number, etc., be sure there is no active keystroke logger (spyware) in your PC. |
#2
Posted to alt.electronics
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Dehumidifier On & Off Period Feature
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#3
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Dehumidifier On & Off Period Feature
the De'Longhi CFO5M dehumidifier operators manual says
* Never stop the unit by unplugging the power supply cord. * Be sure after 3~ 5 minutes to restart the unit again when the unit is stopped or power supply is cut. John Fields wrote in message ... On Fri, 12 Oct 2007 12:34:32 GMT, (Brad) wrote: Hi, Does anyone know if there is a dehumidifier, instead of using a humidistat setting, allows you to set the time on and the time off? Example: Set the dehumidifier to run for a half hour, then be off for an hour. This cycle repeats over and over. --- Why not bypass the humidistat and switch the mains with a cycling timer? -- JF |
#4
Posted to alt.electronics
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Dehumidifier On & Off Period Feature
On Sat, 13 Oct 2007 09:49:37 +1300, "Frank" wrote:
the De'Longhi CFO5M dehumidifier operators manual says * Never stop the unit by unplugging the power supply cord. * Be sure after 3~ 5 minutes to restart the unit again when the unit is stopped or power supply is cut. So? Do you understand *why* they make these cautions? If you are going to be an engineer and design a system to turn it off/on then you need to understand the parts you are working on... 1. Why do they say 'don't stop by unplugging'? 2. Why do they say 'wait 3-5 minutes to restart'? And please everyone, I know why, I'm asking the OP if he knows. Then implement the timer as was suggested. |
#5
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Dehumidifier On & Off Period Feature
----------------------------
"PeterD" wrote in message ... On Sat, 13 Oct 2007 09:49:37 +1300, "Frank" wrote: the De'Longhi CFO5M dehumidifier operators manual says * Never stop the unit by unplugging the power supply cord. * Be sure after 3~ 5 minutes to restart the unit again when the unit is stopped or power supply is cut. So? Do you understand *why* they make these cautions? If you are going to be an engineer and design a system to turn it off/on then you need to understand the parts you are working on... 1. Why do they say 'don't stop by unplugging'? 2. Why do they say 'wait 3-5 minutes to restart'? And please everyone, I know why, I'm asking the OP if he knows. Then implement the timer as was suggested. ---- It's funny- a dehumidifier is supposed to reduce humidity to or below a preset value- cycling on and off on a cycle unrelated to the humidity (particularly if the humidistat is bypassed) seems to be defeating the purpose of having one in the first place. What is the reason for wanting to put it on a fixed cycle? The stopping and starting may be related to the same problem with refrigerators with marginal compressor motors- something to do with back pressure in the compressor at start(?). -- Don Kelly remove the X to answer |
#6
Posted to alt.electronics
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fixed up s Dehumidifier On & Off Period Feature
It's funny- a dehumidifier is supposed to reduce humidity to or below a preset value- cycling on and off on a cycle unrelated to the humidity (particularly if the humidistat is bypassed) seems to be defeating the purpose of having one in the first place. What is the reason for wanting to put it on a fixed cycle? The stopping and starting may be related to the same problem with refrigerators with marginal compressor motors- something to do with back pressure in the compressor at start(?). please top post so we dont have waste time scrolling down Don Kelly wrote in message news:IbXPi.29203$Da.16388@pd7urf1no... ---------------------------- "PeterD" wrote in message ... On Sat, 13 Oct 2007 09:49:37 +1300, "Frank" wrote: the De'Longhi CFO5M dehumidifier operators manual says * Never stop the unit by unplugging the power supply cord. * Be sure after 3~ 5 minutes to restart the unit again when the unit is stopped or power supply is cut. So? Do you understand *why* they make these cautions? If you are going to be an engineer and design a system to turn it off/on then you need to understand the parts you are working on... 1. Why do they say 'don't stop by unplugging'? 2. Why do they say 'wait 3-5 minutes to restart'? And please everyone, I know why, I'm asking the OP if he knows. Then implement the timer as was suggested. ---- -- Don Kelly remove the X to answer |
#7
Posted to alt.electronics
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Dehumidifier On & Off Period Feature
On Sat, 13 Oct 2007 03:45:44 GMT, "Don Kelly" wrote:
The stopping and starting may be related to the same problem with refrigerators with marginal compressor motors- something to do with back pressure in the compressor at start(?). Yes, it does. Not necessarily marginal, but there is no head pressure release valve so you have to wait for pressure to bleed off. Having answered that, the reason they say "don't unplug to turn off' is a safety item, as the unit will be on, and when next plugged in that may cause a problem. (yes, remote problem, but companies have been sued for much stupider things that consumers do.) So they have to give you a useless warning. And yes, IMHO, a timed cycling unit is not a good idea, but maybe the OP has a good reason. Big maybe however. If the humidity is too low then he wastes electricity. If it is too high, then he doesn't get dry air. So why bother? Maybe he has a good reason, but it must be a national secret, as he hasn't told us! |
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