Page
ST325 User Handbook
20
To enter damper temperature configuration mode press and hold down
the
§
&
¨
keys at the same time while the controller is not running a
program (FIRING LAMP not lit).
Note: in the sequence below if no key presses are detected within
15 seconds the instrument will exit configuration mode and configu-
ration changes will not be saved.
dPr
.
C
°C
°C/hr
hr.min
The damper close temperature prompt is
shown. Release the
§
&
¨
keys.
Press the
¨
key.
150
°C
°C/hr
hr.min
The damper close temperature is now
shown. Adjust with the
©
&
ª
keys
(hold down for acceleration).
Press the
¨
key.
dPr
.
0
°C
°C/hr
hr.min
The damper open temperature prompt is
now shown.
Press the
¨
key.
500
°C
°C/hr
hr.min
The damper open temperature is now
shown. Adjust with the
©
&
ª
keys
(hold down for acceleration)
Press the
¨
key.
The instrument will now reset and the new damper control temperatures
will be stored.
Note: in the sequence above it is important that the
¨
key is pressed
a total of 4 times else configuration changes will not be saved.
Damper Output
Damper Operation
Prior to firing the damper will be open. During firing, when the kiln reaches
the damper close temperature, the damper will closed.
At the end of the firing and when the kiln has cooled naturally to the
damper open temperature, the damper will open.
Control Relay
ST325 User Handbook
Page
5
Turning On
tC
.
r
tC
.
S
tC
.
n
tC
.
K
When turned on the ST325 performs
a display test by briefly illuminating all
of the display digits and all of the front
panel lamps.
The version number of the embedded
software is now displayed. If you
need technical support you may be
asked for this code together with the
ST325’s serial number.
Next displayed is the thermocouple type to which the ST325 is set. This
thermocouple type setting should match the type of thermocouple fitted to
the kiln and can be R, S, K or N type.
‘R’ type
thermo-
couple
‘S’ type
thermo-
couple
‘K’ type
thermo-
couple
‘N’ type
thermo-
couple
20
°C
°C/hr
hr.min
.
20
°C
°C/hr
hr.min
20
.
°C
°C/hr
hr.min
The final display should show the kiln
temperature (20°C shown here) with
the ‘°C’ indicator on. All other lamps
should be off.
If the left-hand decimal point is on
then the keyboard is locked. This is
an anti-tamper feature. Press the
©
&
ª
keys together & hold down for 5
seconds to unlock.
I
f any mimic panel lamps are on then
the ST325 is firing. Press the
START/STOP key to stop the firing.
During firing the right-hand decimal
point will light to show when the kiln
is heating.
T
u
rning On
8888
°C
°C/hr
hr.min
F1
.
01
°C
°C/hr
hr.min
Turn on the mains supply to the controller using the switch on the base.
