Carbolite TZF Series - Manual (Page 3)

STF/TZF
MF08 – 3.24
3
2.0 I NSTALLATION
2.1 Unpacking & Handling
When unpacking or moving the furnace always lift it by its base. Never lift it by its work tube or
the surrounding insulation. Use two people to carry the furnace; three where the control box is
separate. Remove any packing material from inside the furnace before use.
2.2 Siting
Place the furnace in a well ventilated room, away from other sources of heat, and on a surface
which is resistant to accidental spillage of hot materials and which is not inflammable.
Ensure that there is free space around the furnace. Do not obstruct any of the vents in the control
section: they are needed to keep the controls cool.
Ensure that the furnace is placed in such a way that it can be quickly switched off or disconnected
from the electrical supply - see below.
2.3 Setting Up
If the furnace is supplied with a work tube then the holes at the end of the furnace chamber should
be supplied at the correct size. Carefully line up the tube and ease it through the chamber.
For a tube of customer supply, ensure that there is approximately 1mm free play at each end; if the
tube is too tight, it may crack when heated. Enlarge a tight hole by rotating the tube, which is
abrasive. Remove loose powdered ceramic fibre with a vacuum cleaner and see section 5.1.
Contact Carbolite if the holes in the furnace chamber are too large.
Ensure that the tube is centrally placed and reaches to or through the furnace end covers, so that
there is no access to exposed electrical connections.
Vertical Mode. The furnace (if a tube is also supplied) has a plate or clip to retain the tube in
position. See fig.1.
Fit any accessories supplied. For optimum temperature uniformity, insulating plugs or radiation
shields should be placed in the tube ends as shown in fig.2. The ends of the shields should line up
with the ends of the work tube.
NOTE: radiation shields are strongly recommended for all these furnaces, and are essential for
Vertical TZF models. Contact Carbolite for further information.
If stainless steel seals with gas inlets
are supplied they are to be fitted as
shown in fig.3; the stem of any
insulating plug should touch the seal.
When stainless steel seals are fitted
in the vertical mode, a hook and eye
holds the upper insulating plug
assembly; alternatively a gland nut.
If heavy fittings are to be clamped to