TRAINING MANUAL
WM0742HGA
WM0742HGA Page
25
TRAINING
MANUAL
WATER TEMPERATURE CONTROL
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.
EXTRA
HOT
HOT WARM
COLD
Set
Point
158
°
F 122
°
F 104
°
F 86
°
F
Range (Wash)
158
~
167 122
~
131 104
~113
50
~
86
Range
(Rinse)
68
~
77
Tap
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.
continued on next page
Summary of Contents for WM0742HGA
Page 1: ...LG TRAINING MANUAL LG TRAINING MANUAL Steam Washer WM0742H A Fall 2008 ...
Page 29: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 27 TRAINING MANUAL WIRING DIAGRAM ...
Page 32: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 30 TRAINING MANUAL DISPENSER HOSE CONNECTIONS ...
Page 57: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 55 TRAINING MANUAL ERROR CODES continued ...
Page 70: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 68 TRAINING MANUAL MAIN BOARD ...
Page 71: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 69 TRAINING MANUAL EXPLODED VIEW CABINET ASSEMBLY ...
Page 72: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 70 TRAINING MANUAL DRUM and TUB ASSEMBLY ...
Page 73: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 71 TRAINING MANUAL DISPENSER ASSEMBLY ...
Page 81: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 79 TRAINING MANUAL SERVICE BULLETINS ...
Page 82: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 80 TRAINING MANUAL ...
Page 83: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 81 TRAINING MANUAL ...
Page 84: ...TRAINING MANUAL WM0742HGA WM0742HGA Page 82 TRAINING MANUAL ...
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Page 93: ......
Page 94: ...Steam Washer Fall 2008 ...