Yamato Scientific BH300 Thermo-Elite - Manual (Page 27)

24
about an independent temperature overheating prevention device (BH500)
There are two kinds of safety devices for overheat prevention. They are an automatic overheat
prevention of controller (auto return) and an independent temperature overheating prevention device
(manual return) composed of circuit and sensor independent of the controller. Double safety
measures are considered to this machine.
1. Range of set temperature and function
Range of set
temperature
:
0∼399℃
Input method :
A digital switch of the treble is used. Please turn the drum of each digit and make to an
arbitrary value. Please note that the digit of 100 can input only the numerical value to 0-3.
Function :
When rising more than the temperature which the measurement temperature set in an
independent temperature overheating prevention device, the heater output is
intercepted. The leak breaker becomes and the function becomes effective while turned
on. ER07 blinks to a main display when an independent temperature overheating
prevention device operates and the blinking display is done and the sign of abnormality
(TROUBLE) blinks. When the independent temperature overheating prevention device is
activated during heater ON, ER07 and ER03 are alternately displayed.
2. How to use
z
Please set 15℃ or more higher than set temperatures of this machine usually.
z
Please make to a value which is very higher than the room temperature to set an appropriate value for
the protection of the sample etc. Moreover, please set 15℃ or more higher than the highest, set
temperatures in the driven temperature pattern.
z
Be careful please not to lower more than an in-flight temperature and be careful not to drive a set
temperature of an independent temperature overheating prevention device as a low setting. Please do
setting over again after turning off the leak breaker once when you operate this machine by mistake.
Please refer to item (P24) of the safety device and the error code when this machine operates depending
on other causes.
3. Notes
z
The digit of 100 of a digital switch can input only the numerical value to 0-3. There is a possibility
damaging the switch when the drum is forcibly turned.
z
It is likely not to notice to the change of a set temperature when a set switch is cleaned the hand's
touching the switch. Please confirm whether a set temperature is an appropriate value before begin to
be come in contact with this machine and to be driven.