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1. Moves the drum in the open direction to check if the user has manually opened the
drum door, and if found so, will stop and assume the normal off position.
2. If not “Home”, moves the drum so as to close the door, moving as far as would
normally be required to close the door from the “Home” (fully open) position.
3. The sensor module then operates the grabber and leaves it in the retracted position.
4. Provided the grabber was successfully retracted, the drum will continue rotating in the
Close direction; ramp up to full speed, and the dryer will continue its cycle.
3.5.11 Heater
Control.
The heaters are controlled in response to the selected drying cycle chosen and also
according to other technical requirements such as reversing and over heating.
In the electric heater models, the heater housing is fitted with two elements that supply
about 5 kW of heat when both are on. There is a 3.6kW and a 1.4kW element that are
used at various times depending on the cycle chosen and the drum/fan direction. For the
gas model, a gas burner is used to provide the heat, and this is turned on for lower duty
times for the Permanent Press and Delicate cycles to apply similar heating as the electric
model.
When drying, the heater is only switched on when the drum is up to speed. Because of
the time it takes for the element to cool down after switching off, the larger element in the
electric model is switched off a few seconds before stopping to reverse, to prevent
excessive heat entering the drum.
The software in the motor control module responds to the switching on and off of the
heater as requested by the sensor module. It also monitors the automatic thermostat on
the heater housing for excessive restriction of airflow, and if detected, will set a User
Warning but continue the drying cycle until the end of the cycle when the warning will
reset. If the User Warning occurs, the drying will take a longer time to complete and the
load will possibly end up a little damp.
Each cycle, Denim through to Delicate, has a temperature limit, as defined in the table
below, as measured in the exhaust air. After switching off at the limit, the temperature has
a hysteresis of 5 degrees below these temperatures when the heat source switches back
on.
Denim
Regular
Permanent
Press
Delicate
149
o
F (65
o
C)
149
o
F (65
o
C)
140
o
F (60
o
C)
127
o
F (53
o
C)
When tumbling the heat source is turned on as shown in the table below:
Electric
Door Close Direction
4 minutes
Door Open Direction
40 seconds
Element 2/3
Heat
Element 1/3 Heat
Element 2/3
Heat
Element 1/3
Heat
Denim
ON
ON
OFF
ON
Regular
ON
ON
OFF
ON
P.Press
ON
OFF
OFF
ON
Delicate
ON
OFF
OFF
ON
Air Dry
OFF
OFF
OFF
OFF
Summary of Contents for Smartload DEGX1
Page 1: ...DRYER Models DEGX1 DGGX1 517760 ...
Page 2: ......
Page 60: ... 60 7 Wiring Diagrams 7 1 U S A Model Electric ...
Page 61: ... 61 7 2 U S A Model Gas ...
Page 69: ... 69 Notes ...
