Carbolite VST 17/-- - Manual (Page 3)

1700° Tube
LMF32C – 1.07 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, or by any protruding parts. These furnaces or the attached control
boxes contain transformers and are heavy: use two or more people to carry them.
NOTE: This product contains Refractory Ceramic Fibre (better described as Alumino Silicate
Wool) for precautions and advice in handling this material see the ‘Repairs and Replacements’
section.
2.2 Siting & Setting Up
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. Do not mount the furnace on an
inflammable surface.
Ensure that there is free space around the furnace. Do not obstruct any of the vents in the case:
there are cooling fans in the case which must not be obstructed.
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 Removal of Packing Material
VST: Open the furnace and check and remove any packing,
2.4 Fitting the Heating Elements
Wear eye protection when handling the heating elements. See the warning in section 4.7.
Wear face mask: see section 4.2.
The Molybdenum Disilicide elements are EXCEPTIONALLY FRAGILE and are packed separately,
together with other items:
Separately packed
items
VST 17/--/250
Elements 6
Element clamps 12
Element clips 12
Braids 1 set
Element insulators 6
Fit the heating elements vertically into the chamber, handling with great care. Installation
instructions are given later in this manual in section 4.7.
Connect the aluminium braids securely as indicated in the element installation instructions.
2.5 Fitting the Thermocouples
The thermocouples are enclosed in ceramic sheaths which fit downwards through the insulation in
holes approximately 10mm. Each hole has a nearby terminal block.
Fit the sheaths into the holes. Fix the sheaths in place using a self-tapping screw through the wire
in the nearby hole.
Insert the thermocouples and connect them to the terminal blocks. The leg of the thermocouple
with a blue paint mark is the negative. The negative side of the connecting cable is marked with a
double number (e.g. 11).
2.6 Electrical Connections
Connection by a qualified electrician is recommended.