They don't use valves in washing machines. In them, and dish washers also, they run the pump from a split capacitor motor and reverse the motor to send the water where it is supposed to go. The out let lines come off the pump impeller housing tangentially, one from each direction. You wouldn't think so but no water comes out of the outlet pipe that the impeller is turning away from. However, if a siphon keeps the water flowing out of the wrong outlet, it will keep flowing even though the pump is running the other way. It will suck the machine dry in a few minutes.
Regards. Max. K 4 O D S. Email: [EMAIL PROTECTED] Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Music site: http://www.maxsmusicplace.com To subscribe to the fun with tubes group send an email to, [EMAIL PROTECTED] ----- Original Message ----- From: "Dale Leavens" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, January 19, 2008 10:01 AM Subject: Re: [BlindHandyMan] : tangential to: Very Upset Here! > Not sure how you read it but any of the washers I have been into don't > have a shut-off valve between the tub and the drain hose. If you pull the > hose out of the drain or unhook it from the edge of the sink it pumps into > and drop it on the floor while the machine has water in it you will find > the water drains out. This is convenient when a pump dies because you can > drain the water out of the machine without bailing it but, if you don't > instal the drain at a level higher than your water level in the machine > the machine, when on will continuously try to fill as the water runs out > the drain hose. > > Some machines, maybe all these days continuously run the pump > recirculating the water often through a lint trap. In that case they have > a valve which directs the pump water through the tub or out the drain. I > suppose others only engage the pump to push the water out of the machine I > can't remember if I have ever seen that sort of arrangement. > > The instructions for installation on any of the machines I have owned > include the instruction to keep the hose drain height at some specified > height, I think 30 inches but I don't remember for certain. If the drain > doesn't achieve at least that height before dropping the machine will self > drain. > > I suppose if the hose is long enough before that drop to hold a tub full > of water then it would simply fill the hose then refill the machine from > the hose when the pump turned off. Similarly, if the hose run was > continuous falling beyond the level of the tub, once the drain hose was > full it would actually suck the water out of the machine. Usually you want > an air space where the hose fits into the drain or have it fall into > something open to the air like a sink exactly to prevent that siphon > problem. > > Front loading machines may be a little different and I noticed in England > recently there are more of those being built into kitchen cabinets, they > probably have a more direct connection to the drain and probably a check > valve just after the pump so the column of water can hold it closed and > keep sewer gasses returning. Usually in England too the drains don't > directly connect to the sewer in the same way they do here, they drop into > a sort of basin so that there is again an air connection. This too may be > changing by now and I don't know what they do in those huge tower blocks > where the volume must be huge but even fairly modern housing has a grill > along one edge of the building and the tail of a drain over it. I suppose > they must do something different where there is plumbing in a basement I > never observed that. Maybe David could comment on that. > > > > Dale Leavens, Cochrane Ontario Canada > [EMAIL PROTECTED] > Skype DaleLeavens > Come and meet Aurora, Nakita and Nanook at our polar bear habitat. > > > ----- Original Message ----- > From: [EMAIL PROTECTED] > To: [email protected] > Sent: Saturday, January 19, 2008 4:42 AM > Subject: [BlindHandyMan] : tangential to: Very Upset Here! > > > Dale, by what you wrote here, it makes me think that the pump for > draining > a washer isn not a shut off. > I'm surprised by that,Did I read you incorrectly? > No offense intended. > > On Sat, 19 Jan 2008, Dale Leavens wrote: > block > > If you run a drain hose into a floor drain, the furnace room or any > other drain you will need to make sure that there is a high point about > the height of the washing machine, 36 inches. Otherwise, the washer will > drain by syphon action while you are trying to wash and before the pump > comes on to drain the machine.Just bear that in mind. > > > block end > > > > > [Non-text portions of this message have been removed] > > > > To listen to the show archives go to link > http://acbradio.org/handyman.html > or > ftp://ftp.acbradio.org/acbradio-archives/handyman/ > > The Pod Cast address for the Blind Handy Man Show is. > http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > > Visit The Blind Handy Man Files Page To Review Contributions From Various > List Members At The Following address: > http://www.jaws-users.com/JAWS/handyman/ > > Visit the archives page at the following address > http://www.mail-archive.com/[email protected]/ > > If you would like to join the JAWS Users List, then visit the following > address for more information: > http://www.jaws-users.com/ > For a complete list of email commands pertaining to the Blind Handy Man > list just send a blank message to: > [EMAIL PROTECTED] > Yahoo! Groups Links > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.516 / Virus Database: 269.19.7/1233 - Release Date: 1/19/2008 > 6:37 PM >
