Repair & Service

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How an LG garbage disposal Works:

Installation of LG garbage disposal:

To install the LG garbage disposal you need to install the assembly that will hold it in place. That consists of a flange and mounting ring that fastens like a sort of sandwich on either side of the sink opening.

  • First, seal the sink opening with a bead of plumbers putty around the opening about 1/2" in thickness.
  • Place the new disposal sink flange into the sink opening and press it into the plumbers putty.
  • Have someone hold the sink flange in place as you now work from under the sink and take the fibrous gasket and triangular attachment ring and slide them onto the sink flange.
  • This is held in place and attached to the sink flange with a round spring clip or snap ring. Clip the snap ring into the recess in the sink flange sleeve.

Popular Kitchen Garbage Disposals

When choosing a new LG garbage disposal, your decision may hinge on a few key factors. Youll want a minimum one-half (1/2) horsepower motor and youll want to look for stainless steel parts to avoid corrosion. Unless you have a good reason for getting a batch feeding model, youll also want to look for continuous feed. Batch feed disposals are the kind that run when you insert a special sink stopper in the opening and turn to activate the system. Continuous feed disposers typically operate by a wall switch. Another good rule of thumb is that the larger the LG garbage disposal, the quieter it will generally run - an important consideration over the life of heavy usage.

There are a lot of models on the market that meet these basic requirements, so its possible that at the end of the day your decision will come down to choosing the brand you most trust. Below youll find some helpful advice and information about some of the best-selling LG garbage disposal brands.

Waste King, Whirlaway and Sinkmaster

Two of the most popular brands of garbage disposers - Waste King and Whirlaway - are made by the same company, Anaheim Manufacturing. In fact, the Sinkmaster Bonecrushers, another best-selling disposer line used to be made by Anaheim before they changed the name of the series to Waste King Gourmet. Waste King Gourmet series disposals are considered by many to be the finest available because of their precision-engineered motors, stainless steel grinding components and corrosion-proof housings. Although Insinkerator (below), is the best-selling brand, Waste King disposers are considered by many to be the Cadillacs of garbage disposers.


If youre in the market for a LG garbage disposal, chances are youve come across a few different models by Insinkerator. Thats because theyre the best-selling brand on the market - and for good reason. The company points to their high-performance motors, easy installation and in-home service warranties as hallmarks of their disposal lines. However, some competitors turn their noses up at Insinkerators exclusive auto-reverse grind system, claiming that superior engineering eliminates the need for such a system. Of course, Insinkerator claims that the patented system is central to chopping food up efficiently and keeping the disposal sanitary. Insinkerator also manufactures the popular Badger line of LG garbage disposals as well as the Evolution series made for Lowes Home Improvement.

Kenmore Disposals

Kenmore disposals always seem to get great reviews, which makes sense because Kenmore disposals are manufactured exclusively for Sears by Insinkerator.

KitchenAid and Viking

Arguably, very few people will ever get a good look at your garbage disposer, but if you want see a veritable work of art every time you reach under the sink for the Windex, youll probably want to look into a Viking or KitchenAid disposer. With a wide palette of available colors, the KitchenAid is the real stunner; although the Viking disposal is nearly as impressive. The KitchenAid lines feature double-edged cutting blades that can grind almost anything into a superfine slush. This system keeps the unit smelling fresher and helps protect against clogs and jams. The Viking models have an impressive cast grind wheel and shredder assembly, but theyre primarily known for their super quiet operation. Vikings patented sound-absorption insulation system makes their disposals the perfect choice for maintaining a peaceful kitchen.

Keep in mind that moisture and other conditions under your sink can shorten the lifespan of your LG garbage disposal. Pay close attention to warranties and make sure that parts are readily available for your model.

How disposer works:

Garbage disposers all work according to the same principles. In most garbage disposer units, a high-torque electric motor spins a round turntable, sometimes referred to as a masher plate, which sits above the motor. The garbage is fed through an opening at the top of the disposer unit which is attached to the sink drain. The turntable has small metal lugs, kind of like little dull blades or teeth, which help to shred and diffuse the waste. This turntable is enclosed by a shredder ring, which is loaded with sharp slots.

The garbage drops onto the turntable, and the centrifugal force thats generated by the motor turns the table rapidly and forces the garbage to the outside of the table, where it gets shredded by the lugs, and goes through the shredder ring. The food waste then falls through the shredder rings small holes where it is then shunted to the drainpipe.

You want to have cold water flowing through the disposer at the same time to help maintain flow and prevent clogging of the drain. We recommend a strong flow of water, maybe up to about two gallons per minute, and keep it running for a minute after you turn the disposer off.

Continuous feed disposers are activated by a wall or under counter switch, while batch feed disposers are activated by turning a stopper which presses against a switch.

Make sure that if you do any kind of work to your disposer, that you disconnect the power at the main disconnect.

Most disposer problems are caused by jams, clogs, and leaks.

How to unclog a LG Garbage Disposal:

  1. Turn off the power to the disposal unit. Dont just assume the power is off, but unplug the unit from its power source or turn off the circuit breaker in the electrical panel for your home. This is to avoid any accidents that may happen.
  2. Try to use your plunger to clear the clog. This may work, and if so, you are finished.
  3. Make sure the water is turned off by using the shut-off valve located under the sink. This valve will look like the one used to turn off water to your toilet or to you sprinklers.
  4. Place the large bucket under the sinks pipe bend (the trap).
  5. Remove the bolts that hold the disposal unit to the pipe and also remove the pipes bend. There will be some mess associated with this part of your job. Dont be surprised when this happens, that is why you placed the bucket where you did so that it can catch all of the resulting mess.

Check the removed pipe and the disposal unit for any obstructions. If you find any you can go ahead and remove them. If you dont, then you may have to go ahead and snake the pipe in wall.

Disposal Will Not Turn On:

f the disposal will not turn on and it is NOT making a humming sound, then there is an electrical problem.

  • This may seem obvious, but make sure the disposal is plugged in.
  • If it is plugged in then press the Reset button found on the bottom of the unit. If it has reset, the button will be popped out.
  • If that does not work, check to see if the circuit breaker has tripped and turned off in the electrical service panel.
  • If the breaker has not tripped and the reset button is not popped out, then its either a faulty switch or a faulty garbage disposal. First locate the switch that powers the disposal unit. It should be located on the wall but may be under the sink.
  • Turn off the circuit breaker at the service panel which powers the disposal.
  • Replace the switch
  • Turn power back on at the service panel and check the disposal for operation.

If the disposal will still not turn on and makes no noise, the LG garbage disposal is beyond repair and needs to be replaced.

How to Clean a LG Garbage Disposal:

Cleaning your LG garbage disposal is a quick and easy way to help keep your kitchen smelling fresh and your sink drain working properly. Although well-maintained garbage disposals that are used correctly should generally clean themselves, the following tips will help keep your LG garbage disposal in tip-top shape.

  • 1. Cleaning the Garbage Disposal Most garbage disposals are made of a metal cylinder equipped with rotating impellers. Many newer units include a series of grinders on the sides or bottom of the metal cylinder that grind down the contents of the LG garbage disposal. In either case, the insides of a disposal can quickly become covered with sludge and debris. No matter how hard you try to protect your disposal, items unsuitable for disposing will find their way down your drain. Glass, metal, rubber objects or highly fibrous food materials like cornhusks, shrimp shells, peach pits, artichoke leaves or large bones will need to be physically removed from the disposal. In all cases, items that become lodged or left within your disposal will breed odor-causing bacteria and compromise the performance of your LG garbage disposal and drain. There are a few ways to clean sludge and debris:

    Clearing Items Out of the Garbage Disposal Safety is important when clearing your LG garbage disposal. Before you start, be sure to turn off the fuse that regulates power to your garbage disposal to ensure there is no chance for the unit to turn on while youre clearing it. Using tongs or pliers, you may be able to remove any non-disposable items stuck inside your LG garbage disposal. You should try to avoid sticking your hands inside of the disposer, but if it becomes necessary to use your hands, be sure that the power to the unit is disabled.

    Cleaning the Grinding Elements Using Ice and Rock Salt You can combine two cups of ice cubes and a cup of rock salt to make a great cure for malodorous garbage disposals. Fill the LG garbage disposal with the ice cubes and then pour the salt over the ice cubes. Run cold water and turn on the LG garbage disposal for approximately 5-10 seconds. The combination of ice and rock salt will help knock sludge and debris off of the grinding elements so that they can make their way down the drain. If you dont happen to have rock salt, substituting a cup of vinegar will also work.

  • 2. Clearing the Drain LineGood general garbage disposer maintenance includes a periodic purging of the drain line leading from the LG garbage disposal. You should also purge the line after removing sludge and debris because it ensures that all dislodged items make their way down the drain. This can be accomplished by plugging your drain, filling your sink with 2-4 inches of water and then removing the drain plug and turning on the LG garbage disposal. Then all of the collected water gets pulled through the line. In addition to being a part of good maintenance, you should also clear your drain line each time after you dispose of particularly fibrous foods. It will help ensure that all of the food particles make their way down the drain.
  • 3. Freshening up your LG garbage disposal Using Citrus PeelsAfter youve cleared and cleaned your LG garbage disposal, you can use citrus peels (oranges, lemons, limes, grapefruit) to help freshen up your sink. Put a handful of citrus peels into your LG garbage disposal, run the cold water and turn on the disposal. The citric acid will help deodorize your disposer and leave your kitchen smelling fresh.
    Its especially a good idea to clean your LG garbage disposal before you leave your house for a few days. Having food, sludge and debris sitting in a moist garbage disposal that isnt being used is a sure fire recipe for breeding odor-causing bacteria. Following these easy steps will help keep your LG garbage disposal working properly and your kitchen sink smelling clean.

VERY IMPORTANT DISCLAIMER: We assumes no responsibility for inconveniences or damages resulting from use of the information he supplies. The consumer or reader is individually responsible for his or her use of the information supplied and uses this information at their own risk. We have no liability for errors, omissions, or any defects whatsoever in the information or instructions, or for any damage or injury resulting from the utilization of said information or instructions. All service and repair should be perfomed by professionals.