Carbolite VST 17/-- - Manual (Page 4)

1700° Tube
4 LMF32C – 1.07
These models are designed for single phase electrical supplies with or without neutral. The furnace
must be connected only to the type and voltage of supply for which it was ordered.
The voltage or range of voltages on which the furnace may be operated is given on the furnace
rating label. Check that the supply voltage is compatible with the voltage on the label, and that the
current capacity is sufficient for the amperage on the label, before connection to the supply. A
table of the most common ratings is given in section 7.1 of this manual.
The supply point must be within reach of the furnace operator and must incorporate either an
isolating switch which operates on all live conductors, or a quickly removable plug.
The supply MUST incorporate an earth (ground).
CONNECTION DETAILS supply type
Supply Terminal label Cable colour Live-Neutral Reversible or Live-Live
1-phase L Brown To live to either power conductor
N Blue To neutral to the other power conductor
PE Green/Yellow To earth (ground) to earth (ground)
2.7 Tube Fittings (if ordered)
For optimum temperature uniformity, insulating plugs should be placed in the tube ends as shown
in fig.1. With a long work tube, the stem of the plug assembly should line up with the end of the
tube as in fig.2. Alignment of radiation shields is similar to that of plugs.
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 or radiation shield should touch the seal.
If heavy fittings are to be clamped to the end of an extended work tube they can increase the
bending stress at the centre of the tube. Support such fittings in such a way that expansion of the
tube is allowed.