Water Temperature Control - LG WM0742H Series Training Manual

Steam washer

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User's manual & installation instructions (72 pages)

Service manual (40 pages)

Specifications (2 pages)

Table Of Contents

Table of Contents

TRAINING MANUAL

PREWASH CYCLE

Cold water is supplied via the dispenser when the prewash valve opens. If COLD WASH /

COLD RINSE is selected, the heater is not activated. If another WASH / RINSE temper-

ature is selected, the heater still is not activated during the PREWASH unless the water

temperature is lower than 85° F (29° C).

MAIN WASH and RINSE CYCLE

At the beginning of the prewash cycle, COLD water is supplied via the dispenser when

the prewash valve opens. Then HOT or COLD water is applied as required to create a

wash of the programmed temperature, as shown in the table below.

Set Point

Range (Wash)

Range (Rinse)

As used in the chart, the set point is the specified temperature setting (hot, warm, cold,

et al) as recommend by the clothing manufacturers. In times past, HOT was whatever

came out of the hot water faucet, COLD was whatever came out of the cold water faucet,

and WARM was what happened with both valves opened. The washing machine uses a

thermistor and computer to regulate the water input, adding hot or cold water as needed

to adjust the temperature. If the washer cannot achieve the desired temperature with

the addition of hot water to the tub, the heater will be activated and continue to operate

until the desired temperature is achieved. When the desired setting is reached, the

heater is turned off, and it will not come on again unless the temperature of the water in

the tub decreases by 36°F (20° C.) For example, in the case of a HOT wash, when the

water is heated to 122°F (50° C.)

In example 1, HOT / COLD temperatures are chosen for a NORMAL cycle. The prewash

valve is opened and cold water is supplied briefly, then the hot valve is opened and water

fills the tub until it reaches 131° F. As 131°F is hotter than the set point for HOT

washing (122°F), the cold valve is opened to regulate the temperature to 122°F and the

heater is never energized because the water temperature meets the target.

WM0742HGA