Controller Operation - Carbolite ELF Series Installation, Operation & Maintenance Instructions Manual

C
ONTROLLER
The controller normally fitted to this furnace is the Carbolite 201 made by Eurotherm.
If any other controller is fitted, then a separate manual is supplied.
If a time switch is fitted, then a separate manual is supplied.
4.1 201 – Basic Features
When switched on, the controller lights up, goes through a short test routine, and then displays the
measured temperature and starts to control. The output light glows or flashes as heating occurs.
The Page key
are hidden and cannot be accessed by the operator because they contain factory-set parameters
that should not be changed.
A single press of the page key
reveal the lists indicated in the Navigation Diagram in section 4.6.
The Scroll key
others may be altered by the operator. Some parameters only appear in appropriate circumstances
– for example, working setpoint does not appear if setpoint ramp rate is Off.
A single press of the scroll key
parameters in the current list indicated in the Navigation Diagram.
To return to the Home list at any time, press Page
The Down and Up
4.2 Basic Operation
Normally no operator action is required other than entering the setpoint, as the 201 starts to
control on being switched on, as described above.
4.3 Altering the Setpoint
With the display at "home", showing the measured temperature, press Down
display the setpoint; press again or hold down to adjust it. The display returns to the measured
temperature when no key is pressed for 0.5 seconds.
4.4 Stopping and Starting Control
It is possible to stop and start the controller without altering the setpoint. Press Scroll
m-A
legend (manual/auto) appears. In the 201, manual means "off" and auto means "on". Press
Down or Up
to change between manual and auto (off and on) as required.
Note that timer modes 1 & 3 set the controller to
controller unexpectedly does not control it may be in manual mode, possibly as the result of
previous use of the timer function.
4.5 Altering the Ramp Rate
MF01
O
PERATION
allows access to parameter lists within the controller; most lists and parameters
displays the temperature units, normally set to °C; further presses
allows access to the parameters within a list. Some parameters are display-only;
displays the temperature units; further presses reveal the
keys are used to alter the setpoint or other parameter values.
once to show the current on/off state:
Note: on the 201 display the letters
m w
and look like
instructions the letters are described
as m and w.
and Scroll together, or wait for 45 seconds.
mAn
for off, and
mAn
at the end of the timing period. If the
ELF (B)
n u
and . In these
or Up once to
until the
Auto
for on. Press or
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