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Evapoative air conditioning

My air con unit is not filling with water when I switch on. Pump and motor working fine. I suspect valve used for dumping water is stuck open as i tried to manually fill it and water just drained. Is it the dump valve stuck open?

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  • Scozzie Jan 27, 2008

    Thanks. I managed to fix it myself. A power surge has welded a relay contact blowing the solenoid but I managed to by-pass the relay with a new transformer and solenoid. All working like new now.

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Sounds like the flaot switch is stuck in the up position. this will be like the drain pan is always full of water. You may need to take the unit apart and check the flaot in order to reapir this problem.

Posted on Jan 26, 2008

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Posted on Jan 02, 2017

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1 Answer

The unit was working filled up with water and then quit working. The LED's flicker but it doesnt turn on


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1 Answer

BELT SLIPPING ON FLYWHEEL WHEN HOT


To solve the problem, first check the basic requirements for good function. The deflection of the belt should be 1/64 per inch of span between the centerpoint of the two pulleys. An example, if pulleys are 12" apart, the deflection is aprox 3/16". Next check for air leaks. With air in the tank at about cut out pressure, shut down unit and listen carefully for leaks (spray with soapy water) and repair as needed. Most likely leak is at the in-tank check valve. Remove the airline from the check valve and apply soapy water. If the check valve is leaking the pump with work extra hard to fill the tank. Clean the valve or replace if leaking. If no leaks, then suspect reed valves or head gasket. If reed valves or head gasket are leaking internally, the unit will take longer to fill and the discharge tube will be very hot. To keep track of the overall condition of your unit, you should know how much time it takes to reach cutout pressure. Ideal would be to time the unit when new then retest every month. If unit begins to take longer to fill, you know that a component is failing. Finally check that mounting bolts are tight and brace is not broken or cracked (some compressors have a very thin mounting plate causing the motor or pump to vibrate and the belt to wobble, a brace is added from the top of the pump to motor or motor mount). Good luck and let me know what you find.

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I have a coleman powermate 7.5 hp.pressure switch set at 125 but will only pump up around 100 psi.It keeps running.IF I set switch 100 it will pump up and shut off but it takes a long time.If my H.P....


One can determine the condition of the pump components by the length of time to fill to 125. For example, when new your unit would most likely take about 3~5 minutes to fill to 125, as it wears would take 5~8 minutes. Now it will not reach 125 so most likely problem is leak at one of the connections or cylinder /piston leaking compression. Easy to check for leaks. Spray soapy water on all connections while running and repair as needed. If no leaks, examine condition of the cylinder close to the top of stroke. Unplug machine, let out all the air, remove cover so that you can see bottom of cylinder. Turn motor my hand to move piston to top and look for scratches. If scratched /worn looking, replace cylinder /piston and bearing. After new parts are installed, time unit to fill to 125 and keep track as you use the unit to tell condition of parts/leaks. Good luck No spell check today so forgive.

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Just replaced my Emerson 2hp pool motor. Turned on new motor all is working fine but water isn't filling the basket?


First of all you need to fill the pot with water. it is best to pour a bucket in or use a hose and turn the pump on and off real quick a couple times to **** some water into the pump. Once you do that fill the basket as much as possible and quickly put the lid on and turn on (make sure your lid o-ring is there and in good shape. lubricate it with pool lube so it's wet but not all gooped up). when you turn the pump on you should see water either splash, or at least start trickling into the pot. if you see water splash in, but then go dry again, or if it just trickles but doesn't prime after about 20 or 30 seconds, then you may very likely have an air leak on the suction side. Make sure your lid is sealed, the pipe goin into pump is not loose or leaking air, and make sure the pool cleaner hose is not out of the water, or the skimmer sucking air. If the pipe coming into the pump is sucking air or you suspect it might be try wrapping black electrical tape tightly all around the joint (where it threads into the pump). This is temporary troubleshooting step but works great. If there is a union or a Jandy valve where the pipe comes into the pump check o-rings and all joints for leaks.

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My plumber just installed a new water supply line for my dishwasher. Now the pump comes on but no water fills up in the machine. If I fill the bottom of the unit with water, it works just fine. Even though...


You don't know how many times I've heard and found the shutoff valve off or partly turned off. Water entering DW is from line pressure not pumping. Items to suspect (again) the water supply valve (would'nt be the first time a new valve is bad). The supply valve (3374621) at the Dw, the float safety switch (normally at front left side,)...remove lower rack, lift float housing up and down. You should hear a click both ways and the housing should be free. Is the Dw fill valve getting control signal from timer. Should be 120v for about 60 sec.

Ric


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1 Answer

Difficult starting, seems compressor unit has excessive resistance, you can smell the burning, oil level is full


A couple of things to check is to see if the unloader valve is working, there is a copper line that goes to the pressure switch that dumps the air pressure off the pump to allow a start under no load. with the compressor off and the tank up to pressure loosen the fitting on the small copper line to see if there is any pressure there. if there is either the valve is plugged or the small lever under it from the pressure switch is not hitting the valve to unload it. The other suspect is that the start capacitor in the motor is bad. I assume that this is a 220 volt single phase motor. you would best take the motor to a motor shop and have it tested. this is something that I would advise you have a professional do if you are not experienced with motor repair.

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My dishwasher won't fill with water. I've checked the float assembly inside the washer and it seems to work fine. I've been looking for the float switch and water inlet valve inside the bottom panel in...


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this will make a sound like emptiness and with air in it

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1 Answer

No water to dishwasher


There's no water entering the machine If there's no water entering your dishwasher, check these:

Water-inlet valve
Float switch
Water-inlet valve The water-inlet valve lets water enter the machine. If this valve is defective, you need to completely replace it. It's usually located behind the lower access panel on the left or right side. It's the device with the main water line (usually copper) from the house, a rubber tube to the dishwasher, and two wires attached to it.

Float switch The float switch is a small electrical switch that's located right below the dishwasher "floor." Above the switch, on the inside of the dishwasher, is a plastic cylinder that floats up as water fills the dishwasher. If this switch is defective, or if the plastic float gets caught or trapped in the raised position, the water can't enter the dishwasher. If the float switch is defective, you need to replace it.

The water doesn't drain from the machine If the water doesn't drain from your dishwasher, check these:

Drain line/air gap
Pump
Drain valve and/or solenoid
Belt
Motor
Timer
Drain line/air gap A clog in the drain line or air gap (if there is one) is the usual reason that a dishwasher won't drain. Often the problem is at the point where the drain line attaches to the garbage disposer or household drain line. If you remove this line, you can clear any debris from the hose or hose connection. Be sure to reattach the hose before starting the dishwasher again.

Pump Your dishwasher pump ejects the water. The pump is usually mounted directly to the motor, then attached to the bottom of the dishwasher. You can reach the pump from inside the dishwasher, but first you need to remove the lower rack, the spray arm, and the spray arm support. 

Look for an impeller--a round plastic fan blade-type of device that spins around. This is the wash impeller, which forces the water through the spray arm. Beneath the wash impeller is the drain impeller, which is similar in size and shape to the wash impeller. The drain impeller pushes the water toward the drain port. These components make up the pump. If any of the pump components are defective, you need to replace them.

Drain valve and/or solenoid Many dishwashers use a drain valve with an electric solenoid. When electricity flows to the solenoid, the valve opens and diverts the water to the drain. Sometimes the solenoid, or the diverting lever, sticks and prevents the dishwasher from draining or filling properly. Try to free up the solenoid to lubricate the lever. Otherwise, you may have to replace the solenoid or pump assembly. With these systems, the motor always rotates in one direction. When it's energized, the drain valve diverts the water. 

Other dishwashers simply reverse the direction of the motor to drain the dishwasher. These units don't have a drain valve. Instead, there's a drain hose connected directly to the pump housing.

Belt One brand of dishwasher uses a belt to drive the pump. If this belt is broken or has fallen off, replace it.

Motor If the motor isn't turning or working, the unit won't drain. First check to be sure you have power to the dishwasher. If not, see the section "It doesn't work at all." If the motor hums but doesn't turn, it may need to be replaced. 

Some dishwashers are susceptible to getting stuck if you don't run them regularly. If you haven't run the dishwasher for more than a week, you may need to manually spin the motor to free it up. If the motor is defective, you need to replace it. Dishwasher motors can't be serviced.

Timer Part of what the timer does is control the motor and drain valve. If the timer doesn't work properly, the water may not drain and you need to replace the timer. This problem is uncommon.

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1 Answer

Water will not pump in .to the dish washer


There's no water entering the machine If there's no water entering your dishwasher, check these:

Water-inlet valve
Float switch
Water-inlet valve The water-inlet valve lets water enter the machine. If this valve is defective, you need to completely replace it. It's usually located behind the lower access panel on the left or right side. It's the device with the main water line (usually copper) from the house, a rubber tube to the dishwasher, and two wires attached to it.

Float switch The float switch is a small electrical switch that's located right below the dishwasher "floor." Above the switch, on the inside of the dishwasher, is a plastic cylinder that floats up as water fills the dishwasher. If this switch is defective, or if the plastic float gets caught or trapped in the raised position, the water can't enter the dishwasher. If the float switch is defective, you need to replace it.

The water doesn't drain from the machine If the water doesn't drain from your dishwasher, check these:

Drain line/air gap
Pump
Drain valve and/or solenoid
Belt
Motor
Timer
Drain line/air gap A clog in the drain line or air gap (if there is one) is the usual reason that a dishwasher won't drain. Often the problem is at the point where the drain line attaches to the garbage disposer or household drain line. If you remove this line, you can clear any debris from the hose or hose connection. Be sure to reattach the hose before starting the dishwasher again.

Pump Your dishwasher pump ejects the water. The pump is usually mounted directly to the motor, then attached to the bottom of the dishwasher. You can reach the pump from inside the dishwasher, but first you need to remove the lower rack, the spray arm, and the spray arm support. 

Look for an impeller--a round plastic fan blade-type of device that spins around. This is the wash impeller, which forces the water through the spray arm. Beneath the wash impeller is the drain impeller, which is similar in size and shape to the wash impeller. The drain impeller pushes the water toward the drain port. These components make up the pump. If any of the pump components are defective, you need to replace them.

Drain valve and/or solenoid Many dishwashers use a drain valve with an electric solenoid. When electricity flows to the solenoid, the valve opens and diverts the water to the drain. Sometimes the solenoid, or the diverting lever, sticks and prevents the dishwasher from draining or filling properly. Try to free up the solenoid to lubricate the lever. Otherwise, you may have to replace the solenoid or pump assembly. With these systems, the motor always rotates in one direction. When it's energized, the drain valve diverts the water. 

Other dishwashers simply reverse the direction of the motor to drain the dishwasher. These units don't have a drain valve. Instead, there's a drain hose connected directly to the pump housing.

Belt One brand of dishwasher uses a belt to drive the pump. If this belt is broken or has fallen off, replace it.

Motor If the motor isn't turning or working, the unit won't drain. First check to be sure you have power to the dishwasher. If not, see the section "It doesn't work at all." If the motor hums but doesn't turn, it may need to be replaced. 

Some dishwashers are susceptible to getting stuck if you don't run them regularly. If you haven't run the dishwasher for more than a week, you may need to manually spin the motor to free it up. If the motor is defective, you need to replace it. Dishwasher motors can't be serviced.

Timer Part of what the timer does is control the motor and drain valve. If the timer doesn't work properly, the water may not drain and you need to replace the timer. This problem is uncommon.

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2 Answers

Karcher HD 655 S Does not come up to full pressure


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