Page
ST325 User Handbook
14
Cooling
Upon completion of firing the ST325 lights all lamps on the mimic display and the
kiln is allowed to cool naturally.
120
°C
°C/hr
hr.min
Hot
°C
°C/hr
hr.min
39
°C
°C/hr
hr.min
End
°C
°C/hr
hr.min
While the kiln temperature is above 40°C the display alternates every 5 seconds
between the kiln temperature and
Hot
When the kiln has cooled to less than 40°C the display alternates every 5 seconds
between the kiln temperature and
End
To return the ST325 back to idle condition ready for the next firing press the START/
STOP key (or turn off the power to the instrument).
Cooling
ST325 User Handbook
Page
11
00
.
00
°C
°C/hr
hr.min
Firing
Information: The ST325 operates by calculating the amount of energy required by the kiln
every 30 seconds. If for example 40% of full energy is required to maintain a particular
ramp rate or a particular soak temperature then the ST325 will apply heating power to the
kiln for 12 seconds every 30 seconds. The right-hand decimal point in the display will
light for 12 seconds every 30 seconds. If the kiln has a contactor then a loud click will be
heard both when the decimal point lights up and when it goes out. If full heating power is
required then the decimal point will remain lit. If full cooling is required then the decimal
point will remain off.
Firing
Hint: it is good practice to check that the program is correct by pressing the
¨
key & checking the program number & program contents before starting a
firing.
20
.
°C
°C/hr
hr.min
To start a firing press the START/STOP
key. The start delay time will be displayed.
The FIRING LAMP will flash - prompting
you to change the start delay (using the
©
&
ª
keys). If the delay is 00.00 the firing
will start in 5 seconds (or immediately if the
STOP/START key is pressed again).
During firing the right-hand decimal point
will periodically light - this shows when
heating power is being applied to the kiln
elements.
620
°C
°C/hr
hr.min
When the kiln has ramped to the pro-
grammed soak temperature soaking com-
mences for the programmed soak time.
The display alternates between showing
kiln temperature...
00
.
14
°C
°C/hr
hr.min
… and showing the soak time remaining.
At the end of the soak period the next required segment will be run. If no more
segments are required the kiln is allowed to cool naturally (see page 14).
