LG WM3677HW Manual de usuario

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6

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COMBO TRAINING

WM3677HW

Washer/Dryer Combo

WM3677HW

Similarities and Differences

While there are some similarities between regular (convection) dryers and

the condenser dryer incorporated into the combo, many of the repair

principles remain the same. These similarities and differences will be

detailed in subsequent slides.

Conventional dryers use a large heating element and forced air to dry the

clothes. Moisture from the laundry is exhausted to the outdoors with the

airflow.

The condenser dryer in the COMBO works on a different principal. The

moisture from the laundry is condensed from the airstream and air is

recirculated instead of being exhausted. This condensed moisture is then

pumped from the combo like wastewater.

The advantages are that no exhaust vent is required and most ventilation

restrictions do not apply to the combo. There is lower heat, resulting in less

damage to clothing. The disadvantage is that the drying cycle takes longer

than a conventional dryer.

Introduction

WM3677HW

COMBO can be used as a Washer or Dryer ONLY

Basically features are the same for the washer

Only ½ wash loads are recommended when drying

Dryer has NO vent – Air is recirculated over the

element and drum. Water is used to cool the duct

assembly to condense moisture removed from the

clothes. Drain pump is activated every 30 seconds

to remove water. Three thermistors control the

water valve and Sensor DRY.

It uses water to remove moisture.

Drying time is extra long. - 120 VAC

Keynotes & Features

WM3677HW

Air is blown over the Heating Element by the Blower assembly

Heated Air passes the operating thermistor and through the tub

Moist Warm Air enters the return air duct

Air Temperature Difference is sensed by the Top & Bottom Thermistors

This is used during Sensor Dry

Water Inlet Valve is energized approx. on 30 seconds off 15 seconds when

the sensor temp is near same. Valve is energized for longer periods at the

beginning of the dry cycle

Water COOLS the return duct causing moisture in the air to condense

Drain Pump is energized every 30 seconds, approx. 10 seconds, pumping

approx. 4 oz. of water

Estimating a 3 hour drying cycle = 8 oz. every minute = 10 gallons of water

Dry Cycle

WM3677HW

Disclaimer

Every effort has been made to provide the most accurate and

up-to-date training in the industry. Sometimes changes occur

during the model year or production run. This presentation

was accurate at the time of its creation. The most recent

version of this presentation and its accompanying manual will

be available on LG CS Academy.

In providing this training to our servicers, we assume they are

reasonably trained and experienced in the repair of

electronics and appliances, and accept no liability for injury or

accident during the course of the repair.

Introduction

WM3677HW

Safety Precautions

If, in the course of servicing, grounding wires, screws, straps,

clips, nuts, or washers that are used in completing a path to

ground are removed, these must be properly fastened to their

original position. The power cord is equipped with a grounding

lead. Do not tamper with the power cord and do not use an

extension cord with the COMBO.

• The same precautions that apply to servicing ordinary

appliances should be observed.

• Before attempting an installation or any service procedure,

read and be very familiar with the COMBO’s service

manual.

• Do not install or store the COMBO in a location where it is

exposed to the weather.

Introduction

WM3677HW

Safety Precautions

• Never launder articles of clothing that have been soaked

or spotted with flammable liquids. These liquids may

include, but are not limited to, gasoline, kerosene,

cleaning solvents, and cooking oil.

These can emit explosive vapors or react chemically to

cause a fire.

• Never add flammable substances to the COMBO. These

substances can emit explosive vapors, even in the lower

heat that a combo produces.

Introduction

WM3677HW

•DO NOT use an extension cord or an adapter with this

washer.

•DO NOT tamper with the power cord.

•DO NOT use the combo with a power socket that does not

meet local requirements or the requirements of the washer.

•DO NOT ground to a gas pipe.

• Before attempting an installation or any service procedure,

read and be very familiar with the combo’s service manual.

•DO NOT install or store the combo in a location where it is

exposed to the weather.

Introduction

WM3677HW

Safety Precautions

• If the COMBO needs to be removed from service, detach

the door from the COMBO to prevent small children from

being trapped inside. Also, remove and destroy the unit’s

power cord.

• At any time that the COMBO is opened for service, the

servicer should take the opportunity to make sure that the

inside of the cabinet is free of dust and lint.

Introduction

WM3677HW

• In certain conditions, hydrogen gas can accumulate in a hot

water system that has not been used for two weeks or more.

Hydrogen is explosive. Before servicing in such a situation,

allow the hot water source(s) to run for several minutes to

release any accumulated hydrogen.

Do not smoke or use an open flame while doing this!

Introduction

WM3677HW