KILNS & FURNACES
Electric in air to 1800°C • Research • Heat treatment
Controlled atmosphere • Melting • Gas, Natural/LPG to 2300°C
Tetlow Kiln Pty. Ltd. ABN: 26 166 832 300 54 Howleys Road, Notting Hill, 3168 Victoria Australia
T: +61 3 8545 8296 F: +61 3 9544 2723 E: info@tetlow.com.au www.tetlow.com.au
SECTION 5 - ELECTRICAL ISOLATORS
For a kiln which is hard-wired, an electrical isolating switch must be fitted adjacent to the kiln, so
the kiln can be safely isolated in accordance with rules and regulations including AS3000.
IMPORTANT: Before electrical connections are made, have your qualified electrician check and
secure all terminal screws and nuts on factory fitted cables (contactor, etc). These may have
come loose in transport and associated handling.
SECTION 6 - BRICKS
The bricks used in the electrical kilns are of the refractory insulation type. These have all the
heat-resisting qualities of refractory bricks but are very porous.
These allow for air, a good insulator, to use the huge number of air pockets inside these bricks,
so that only a small portion of the heat seen by the hot (inside) face of the brick is transmitted
through the brick to the opposite (outside) face. The pore structures also make the bricks very
light in weight. Between the outside face of the brick and the casing is a thin layer of ceramic
insulating fibre.
The bricks are brittle, especially after first firing, and will chip or crack easily if subjected to
mechanical stress. Take care not to bump the bricks when loading or unloading the kiln, and not
to subject the kiln to excessive force by (for example): slamming the door, dropping the kiln
during installation or otherwise, dropping something into or onto the kiln, hitting or causing
something to hit the brickwork.
To Next Page
Loading...