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Dual Furnace Models M17705, N17706 & 17707 Iss.09 – 12/14
SAFETY
CAUTIONARY NOTE
Products of Isothermal Technology Ltd are intended for technically trained and competent personnel familiar with
good laboratory practice. It is expected that personnel using this equipment will be knowledgeable and skilful in the
management of apparatus which may be under power or under extremes of temperature (molten metals, cryogenic
liquids, etc.) and will appreciate the hazards which may be associated with, and the precautions to be taken with,
such equipment.
THIS EQUIPMENT MUST BE EARTHED
The furnace is supplied with a fuse carrier fitted with a neutral link. This is clearly labelled and is for use with a mains
system with a neutral line, such as the UK supply. If the furnace is to be used on a system where both supply lines
are live with respect to earth then the neutral fuse link should be replaced with a fuse. A spare fuse is supplied with
the furnace.
FUSE AND NEUTRAL LINK REPLACEMENT
Hazardous voltages are exposed when the rear furnace panel is removed. Before removing the panel you must
isolate the furnace from the electrical supply. To replace the main electrical fuse or to replace the neutral link bar it
is necessary to remove the rear panel; see warning above. The panel will become free after the four corner screws
are removed.
The fuse holders will be seen at the lower right hand side of the cabinet. The black fuse holder will always contain a
fuse. The white fuse holder will leave Isotech with a neutral shorting bar. As explained elsewhere, if your local supply
does not have a neutral line but has both lines live with respect to earth this link should be replaced with a fuse and
the holder labelled to this effect.
The top half of the fuse carrier pulls free from the lower body.
Two spare fuses are supplied with the furnace; they are type A2 and have a rating of 10A for the low and medium
temperature furnace and 32A for the high temperature furnace.
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