Operating Instructions DFO/DFI Series Mechanical Convection Ovens/Incubator
17
seconds.
3.3 Constant temperature control
1)
Connect the power by inserting the power plug, or engage the circuit breaker on the right side of
the equipment.
Turn on power switch and the controller runs self-check to display:
8888
,
LED on, software
version number
u1.94
,
AoFF
(
Aon
will show up if
Auto
is set to
Aon
) settings for
Ht
、
Lt
. Refer
to 3.5 for procedures about
Aon
and
AoFF
setting. The software version number may change
with technique updates.
2)
Check and/or set the working temperature, refer to No.2 in the table.
If the equipment is in the standby state, press
for more than 2 seconds, the circulating fan
will start to operate and the heater is on if the setting is higher than the actual temperature.
3)
When the temperature in the oven is lower than the set value, heating LED is on and the
equipment is in operation and start to heat. When the set temperature and actual temperature
are quite different, heating LED will be steadily lit with full power heating and the temperature will
go up with full speed. As the temperature approaches the set point, the LED flashes as desired
and the controller decreases the power for the heater. With the actual temperature equals to the
set temperature, the controller keeps the temperature by constant power output.
4)
To terminate the temperature control, press
for more than 2 seconds. The circulating fan
and heater are stopped. The LEDs go off, and the display shows
oFF
.
Connect the power from behind the equipment. Plug in and remove the cable by
directly holding the plug. No dragging of cable in any part. Protect the cable from
being damaged by contacting with the hot surface of the equipment or mouse etc!
Hazards of burn or fire!
Exhausting temperature of the ventilator may be extremely high.
Do not touch or approach! Keep clear of any flammable or temperature sensitive
materials away from the exhausting hot air!
Keep clear of inlets of bottom plenum and outlets of back plenum for the circulating
hot air. Excessive hoarding of specimen or blockage of the air circulating may cause
localized temperature distribution and triggering the over temperature protection
device resulting in hazard of overheating and over temperature!
Bare wire resistance heating device is incorporated for lower heating. Do not put
specimen with high humidity or dripping water into the oven. Never try to insert
conductive wire or similar material into the inlet openings of the bottom plenum.
Never put specimen or apply pressure directly on top of the bottom plenum.
Disconnect the power supply immediately and clear the foreign item if any conductive
particle penetrates into the bottom plenum!
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