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Should the pump motor run constantly when it is not spraying water

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Most do, every one I have used did.

Posted on Apr 27, 2015

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Yes.
However, the engine runs at no load until the trigger on the wand is pressed. You'll easily hear the difference in the sound of the motor.

-Steve

Posted on Apr 27, 2015

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Posted on Jan 02, 2017

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1 Answer

I have installed a brushless constant pressure water pump that keeps coming on constantly... is that a problem for this kind of pump? is that a potential issue?


Motors like to run. It is the starting and stopping that puts the most wear and tear on motors. In order to maintain a constant pressure, the pump must always run.

Feb 14, 2017 | Plumbing

3 Answers

Dishwasher constantly trying to drain, won't wash/work


Hi,

If your dishwasher seems noisy, check these:

Water-inlet valve
Motor
Heater fan
Pump
Water-inlet valve An aging water-inlet valve can sometimes fail slowly, rather than all at once. It can shudder on and off rapidly, causing the incoming water lines to shake, rumble, and rattle--sometimes violently. If yours is doing this, replace the inlet valve.

Motor If it's the motor that's noisy, either of these may be the "culprit:"

  • As motor bearings wear out, they can become quite loud when the motor runs. They wear out quickly if they frequently get wet, because the water washes away the motor bearing grease. Bearings can get wet if the spin seal is defective. Then there will also be water leaking onto the floor beneath the dishwasher. Replace the seal if it leaks (read about the main tub seal in the "It leaks" section, later).


  • If, from beneath the dishwasher, you can see a round, plastic disc that's mounted to the top of the motor (a "slinger"), it may have broken free of the motor shaft. If so, it could be rattling around the shaft while the motor is running. If that's the problem, you need to replace the motor.


Heater fan If the heater fan bearings are rusted or worn, they may squeal, or scrape loudly during the drying cycle. If this is the problem, replace the fan motor. Alternatively, the fan blade may be loose. If so, you need to replace it.

Pump Small fruit pits, toothpicks, and fragments of glass sometimes get stuck in the pump. When this happens, open the pump and remove the debris. The pump is usually mounted directly to the motor, then attached to the bottom of the dishwasher.

To get to the pump, you usually need to remove the lower rack, the spray arms, and the spray arm support from the inside of your dishwasher. A dishwasher pump isn't obvious. Look for an impeller--a round, plastic fan blade-type device that spins around and pushes the water toward the drain. When you can see the drain impeller, you should be able to see the clogging debris.

Jun 18, 2008 | Dishwashers

1 Answer

Whirlpool integrated dishwasher model ADG 7460 Have run the engineer test cycle and it stops and drains water after 2 mins; start light blinks 5 times.


F5 or 5 times flashing.
Variable speed motor failure.

Reason:
- Connection between Spray pump (Variable speed motor) and control board interrupted.
- Frequency converteron Spray pump broken or control board defective.

= Check the power voltage on the motor. BUS: 5V DC, Motor: 230V AC

Reaction: Cycle stops, drain pump drains out,failure indication.

OR

F5 or 5 times flashing.
SPM blocked (MPH motor unit)

Failure condition:
- This failure is only indicated during the active test program
- The electronic detects an irregular deviation of the motor current consumption.

Reason:
Spray pump blocked = check pump housing
Short circuit in motor or wiring = check motor values

Reaction: After 5 attempts to reactivate the spray pump motor the cycle stops, drain pump drains out, failure indication.

Dado

Sep 03, 2015 | Whirlpool Dishwashers

1 Answer

Defy dishwasher does not wash or spray the water but is filled with water and goes through it cycles, what can be wrong?


The motor that pumps the water out of the machine is the same motor that pumps thru the spray arms. The motor runs in one direction to pump the spray bar and in the opposite direction to drain the water out. look at the cycle timer. It switches the direction. If it proves good then the motor is bad.

Aug 18, 2014 | Dishwashers

1 Answer

I have a Fimcoatv sprayer with a high flo gold series pump mod # 5275704 ..the pressure will rise to 40psi & then drop to 20psi & then back to 40, this cycle continues through out the spraying...


As it is a diaphragm pump some pressure fluctuation will be normal but that is likely to be more of an oscillation at the speed of the pump rather than a steady or slow cycling of pressure.
If it is important those oscillations are damped to provide a smooth noise-free pressure the design would include an accumulator.

If everything remains constant - a constant fluid intake and a constant spraying orifice and the pump running at a constant speed then the pressure would be constant and the motor would be consuming a constant current.
Clearly something is not constant. Something must be changing and cycling to cause the pressure fluctuations. I have a theory but am not in a position to test the theory myself - Inserting an ammeter in series with the motor in the electrical supply to the pump and monitoring the current drawn should show it fluctuating at the same time the pressure fluctuates. If the current falls as the pressure falls my theory is the pump intake is being restricted somehow and if the current rises as the pressure falls the pump is labouring due to outlet being restricted in some way or because there is a motor fault. It would be important to monitor the supply voltage at the pump at the same time to ensure it remains stable.

Jun 01, 2014 | Northern Tool Garden

1 Answer

TILE SAW WON'T SPRAY, PUMP AN MOTOR RUN CHECK FOR DEBRI HOW DO I CLEAN TUBING TO SPRAYER I THINK IT IS CLOGGED


Make sure pump is submerged i water
Remove tubing from pump discharge and see if pump is pumping water/ If so your tubing is clogged between pump and saw. Remove tubing and rinse out with hose.

Nov 28, 2012 | Ryobi Saw. 3/4 HP 7 in. Wet Tile Saw WS721

1 Answer

No water flow through system, checked tip, water was on, nozzle on, checked filter. motor starts and runs fine.


The first thing you need to check is if you have the water supply hocked to the mechine with no pressure line connected just the water dose it spray out the pressure line connecter with out the engine running . If this dosen't happen the water pump is no good . You can never start any kind of mechine like this with out constant water flow . It sounds like something is broken between the engine shaft and the pump the pump is likely seized and this broke the connection between the engine and the pump. If this is the case the mechine is likely not worth the money you would have to put into it to save it

Sep 17, 2011 | Honda Garden

1 Answer

My mother-in-law called and her dishwasher is making a loud noise when the motor runs. sounds like a bad bearing somewhere? the noise stops when it drains (motor not running?). does that sound like the...


There is only one motor -- it runs a water pump for recirculating the water when it's washing and runs a water pump when it's draining.

It sounds like the spray arm is making the noise -- this is the part thru which the motor / pump forces the water during the wash cycle -- the pumped water causes the arm to rotate -- a warn or loose spray arm or mount is likely the problem.

Or, it could be just some utensil stuck in the bottom of the dishwasher which the spray arm is rubbing.

More info, let me know.

Charlie

Jul 16, 2011 | Kenmore Dishwashers

1 Answer

Karcher 320H i have the same pressure coming out as i put in from the tap, the motor is running ok


You have an air lock in the pump and or piping.
  • Open all drain cocks and remove the spray hose
  • Connect the inlet water hose and turn it on slow
  • allow water to run from all open ports for 2 minutes or so
  • leave the water running - close drains start motor
  • Shut down reconnect spray hose restart
  • You should now be smiling

Mar 08, 2010 | Plumbing

1 Answer

The rotating arms don't work


problem may be the spray arms blocked and this is not always apparant. they only rotate with water coming out of angled jets at the end. worthwhile taking the spray arms off, run water into the centre hole and see if anything comes into view
pump is an induction motor so normally would run at constant speed.

Sep 04, 2008 | Bosch Dishwashers

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