Using the tube furnace horizontally
The furnace can be used either with the stand
vertically as shown in 2.3.3 or horizontally as
shown in 2.3.4.
To use horizontally simply tip the stand over
into the horizontal position making sure that
the flexible conduits are not trapped beneath
the frame. This may take 2 people to do on
the largest models.
The position of the furnace on the stand can
be adjusted if necessary.
Note: To prevent injury to the operator and
damage to the furnace this must only be done
when the furnace is switched OFF and is cold.
2.3.4
Figure -Tube furnace posi-
tioned horizontally on the stand.
Fitting the standard length work tube in the furnace.
Tools required: 4 mm Allen key.
Note that the split tube furnace can only be used with the extended length work tube.
This is to allow the work tube to be held in place when the furnace is opened in the
vertical position. The diameter of the work tube is a customer order option and
therefore varies between tube furnaces. The fitting of the work tube is as follows with
reference to 2.3.5. Note that standard length work tubes are also referred to as tubes
suitable for working in air; they are 150 mm longer than the heated length of the
furnace (see the table in section 11.0). Read section 7.2 before fitting the work tube.
l
Remove the top work tube end guard (item 8) hen remove the work tube adaptor fix-
ing bracket (4) that holds the work tube end stop (7) and the work tube adaptor (3)
in place.
Note (1) it might be easier to do this with the furnace in the horizontal position as
shown in 2.3.4.
Note (2) if a different work tube with a different outer diameter is being fitted it will
be necessary to fit new correctly sized work tube adaptors (3). In which case, both
end guards and work tube adaptor fixing brackets (4) will need removing.
l
Slide the work tube into the furnace through the work tube adaptor (3) until it
reaches the opposite work tube bottom stop (7). Note that the work tube might be a
tight fit when it is new and may need to be twisted backwards and forwards slightly
as it slides in. For long work tubes it is important to support and line up the work tube
as it is pushed through the furnace. It may also take 2 people to perform this oper-
ation.
l
Reassemble the work tube end stop (7), work tube adaptor bracket (4) and the tube
end guard (8).
11
2.0 Installation
