Operating Instructions DFO/DFI Series Mechanical Convection Ovens/Incubator
14
Chapter 3 Controller descriptions and operation
3.1 Controller panel (Fig 4)
3.1.1 Display for temperature and working parameters
Normally it displays the oven temperature once switched on and initiated or
0FF
when standstill.
Other possible symbols include:
SEt
,
Ht
,
lt
,
Auto
,
Atc
,
dEFt
,
ESc
,
door
,
Stb
. Related definitions
are as follows:
SEt
: Setting of working temperature, must be 5
°
C higher than low limit
Lt
and 5
°
C lower than the
high limit
Ht
. The temperature setting beyond the scope will not be accepted.
Ht
: This parameter is an absolute value and used for reminding only. When temperature in the oven is
higher than the set value,
Ht
is displayed. The controller will trigger a beeping alarm and disable
the heating. While the actual temperature is higher than the
Ht
setting, the
Ht
may be set to a
higher value by pressing
so that
Ht
beeping can be cleared. If the actual temperature is
recovered to lower than the
Ht
setting, the
Ht
alarm will disappear automatically with seconds of
delay, or may be cleared immediately by pressing
. The heating is possible only if the
Ht
is
cleared.
Lt
: This parameter is an absolute value and used for reminding only. When temperature in the oven is
lower than the set value,
Lt
is displayed. The controller will trigger a beeping alarm. While the
actual temperature is lower than the
Lt
setting, the
Lt
may be set to a lower value by pressing
so that
Lt
beeping can be cleared. If the actual temperature is recovered to higher than the
Lt
setting, the
Lt
alarm will disappear automatically with seconds of delay, or may be cleared
immediately by pressing
.
Auto
: Select between
AoFF
and
Aon
, which means manually starting and automatically starting.
Atc
: Absolute temperature calibration (ATC), when the temperature displayed differs from the
temperature measured by a standard thermometer, ATC is used to calibrate the display.
AS
:
Timer for automatic starting. Valid only when the equipment is in standstill mode. The equipment
will be initiated automatically once the set time elapses. The equipment may be started
Fig 4 Controller panel
①
Display for temperature and working
parameters
②
Status indicators
③
Keyboard
④
Power switch
50
