Caf Digital Imaging
page 16
MF36
Note:
Carbolite accept no responsibility for any damage to software loaded onto the computer by
the user and accept no responsibility for damage to the computer or its software resulting from
the use of any software or hardware not supplied by Carbolite.
Switch on the computer and monitor, and double click on the Carbolite icon displayed on the
start up screen. The ‘Carbolite Coal Ash Fusibility Test’ software initiation screen will be
displayed followed by the main test screen. The Carbolite logo will be displayed in the centre of
the blank image screen.
Note:
This software is Windows 2000 compatible; all normal Windows 2000 functions apply
(earlier models: Windows 98).
If the software fails to load, the following messages may appear:
4.3.1 “Communication failure” - “Please check serial line and select retry”
Selecting the “cancel” button will only allow the Carbolite software to be used in analysis mode.
Check that the Comms lead is correctly connected at both the back of the furnace and the back of
the computer. See section 3.11.
Check that the furnace power supply and instrument is switch are turned on. When correct
communication is established the ‘process value’ temperature (the top temperature of the two
temperatures displayed on the furnace controller) will be displayed on the left hand side of the
computer screen below the time and date.
4.4.2. “Dongle not found” - “Continuing in analysis mode”
Selecting the “OK” button will allow the Carbolite software to load, but the record function is
disabled and the software can only be used for analysing stored images. To record images the
dongle (hardware lock) must be installed and the ‘CAF Test’ software re started.
4.4
Loading Samples Into The Work Tube.
Use the sample carrier and sample tiles provided. Arrange the samples as shown in fig 13a.
4.4.1 When the furnace has reached its start temperature open the furnace door and swing it clear of
the work tube to allow access. Load the samples into the mouth of the work tube to warm up,
using the Sample Loading Tool provided. See fig 13b.
Note:
Do not operate the furnace at temperatures above 815
°
C (1499
°
F) with the door open.
The furnace door must not be left open longer than is necessary to load and unload samples from
the work tube.
Note:
if using the zoom lens and camera kit, remove it before opening the door.
After about one minute slowly slide the samples into the tube at a rate of about 25mm per minute
to make contact with the control thermocouple sheath. See fig 13c.
Note:
It is possible to crack the work tube by inserting samples too quickly. Work tube failures
are not covered by Carbolite's guarantee.
Warning:
Do not use the furnace if the work tube is cracked as there is a risk of exposure to
carbon monoxide gas. See section 1.2: Carbon Monoxide Warning.
4.4.2 Close the furnace door and secure using the two swing bolts. It is important that the swing bolts
are tightened evenly to create a gas tight seal between the door flanges.
Caution:
To allow the door side shaft to slide in and out, some clearance is required in the door
mechanism; consequently there is a small radial movement in the door slide arm when the door
arm is pushed in towards the work tube. Because of this radial movement it is possible for the
door plug to contact the work tube from seal assembly if the door handle is lifted as the door arm
is pushed inwards: take care to avoid this happening.
Warning:
Do not operate the furnace with the door or window ‘O’ ring seals removed. See fig
20. This will result in high levels of carbon monoxide leaking from the work tube. See section
1.2: Carbon Monoxide Warning.
