Yamato DKM300C, Manual

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16
4. Operating procedures
Operating procedures (settings for overheat prevention device)
As a safety measure for preventing overheat, a hydraulic overheat prevention device (manual return)
is installed.
Temperature setting range and functions
The temperature setting range for the standalone overheat prevention device is “50 ℃～ 320 ℃ .”
When the temperature in the bath keeps rising beyond the controller set temperature and reaches the
set temperature of the overheat prevention device, the heater circuit trips and the controller operation
is shut off.
When the overheat prevention device is activated, it will not be released until the MCB is
turned on.
How to set temperature Setting the overheat prevention temperature
・
Set the temperature scale on the hydraulic overheat
prevention device installed on the right side of the unit to
the arrow in the diagram shown left.
・
Turn the MCB to “OFF” and wait for a while without
opening the door.
・
After a while, turn the MCB “ON.” (Turn the MCB “ON”.)
Set the temperature scale to the
arrow
Caution
①
Set temperature as “set tempe20
℃
” as a rough standard and add 5
℃
to the setting if
the device functions improperly.
②
The temperature setting range for the standalone overheat prevention device is “50
℃ ～
320 ℃ .” Be sure to set the overheat prevention activation temperature correctly otherwise the
device may not start, the overheat prevention device is activated before temperature in the
bath increases completely, or a fire or other unexpected accidents may result.
The temperature is set at 320
℃
on shipping from the factory.
③ If the temperature for the standalone overheat prevention device is set at around or below the
room temperature, the device may be triggered when the door is opened.
④
The overheat prevention device has been designed to prevent overheating of devices not to
protect samples. The device does not prevent accidents caused from use of explosive or
flammable materials.