Operating Instructions DFO/DFI Series Mechanical Convection Ovens/Incubator
6
The minimum distance away from the back of the oven to the wall, furniture or other
installations shall be 300mm!
Install the oven away from overhead fire sensors, where opening of the door or
exhausting of the fume is possible, in avoidance of triggering of an erroneous fire
alarm!
The oven must not be mounted on a surface of flammable or temperature sensitive
materials, where a hazard could be caused by hot items falling from the oven, for
example when the door is opened!
Keep the oven away from hot-air emitting equipment, direct sunshine, strong
magnetic field and electric sparks!
Neither contamination of high concentration dust or corrosive gas, nor strong airflow
surrounds!
Voltage, frequency and current for power supply must meet the requirements as
designated on the nameplate! Use power socket matching the power plug of the
equipment. Hot line
（
L
）
and neutral line
（
N
）
for single phase equipment must not be
reversed!
Socket for power supply must be equipped with protective ground (PE) to prevent
against hazard of possible electric shock.
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, exhausting hot
air or mouse etc!
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!
The minimum distance to the wall, furniture or other installations shall be 300mm.
No hoarding of flammable or temperature sensitive materials nearby!
No overhead fire sensors in avoidance of triggering of an erroneous fire alarm!
Connect the opening to an extraction system if the operating of the oven could lead to
liberation of hazardous air or gas mixture! The rating of the connection shall be at
least the maximum possible exhausting temperature! If necessary for safety additional
temperature limiting and warning devices shall be installed for the extraction system!
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