5.0 Operation
5.0
Operation
5.1
Operating Cycle
This product is fitted with an instrument switch which cuts off power to the control
circuit.
Connect the product to the electrical supply.
Turn on the instrument switch to activate the temperature controllers. The controllers
illuminate and go through a short test cycle.
Over-Temperature option only
. If the digital over-temperature option has not yet
been set as required, set and activate it according to the over-temperature controller
instructions.
The product will heat up according to the controller setpoint or program, unless a time
switch is fitted and switched off.
As the product heats up, the heat light glows steadily at first and then flashes as the
product approaches the desired temperature. For more information on temperature
control see the controller instructions.
Over-Temperature option only.
If the over-temperature circuit has tripped, an
indicator on the over-temperature controller flashes and the heating elements are
isolated. Find and correct the cause before resetting the over-temperature controller
according to the instructions supplied.
To turn the product off, set the instrument switch to its off position. The controller
display will go blank. If the product is to be left unattended, isolate it from the electrical
supply.
5.2
Setting up for Coal Ash Fusion Test
The CAF 16/38 is designed to be compatible with the following:
BS 1016 : Part 113 : 1995 ISO 540 : 1995 Methods for Analysis and Testing of Coal and
Coke. Part 113. Determination of Ash Fusibility.
The test procedure is entirely manual and under the operator's control. An example of
the procedure is as follows:
Heat the product up to its starting temperature.
Open the product door and swing it clear of the work tube to
allow access. Load the sample into the work tube. The sample
tile with one or two samples on it should be placed centrally
along the length of the work tube.
Set the ramp rate on the controller, if required, to limit the
heating rate. A rate of 7 °C/ min is suggested and is factory
pre-set.
Set the controller to heat the product up to the final temperature. Swing the telescope
into place to allow observation of the sample.
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