The supply should be fused at the next size equal to, or higher than the current on the
label. This manual contains a table of the most common fuse ratings.
When the mains cable is factory fitted, internal fuses are also fitted. It is essential that
the operator ensures that the product is correctly fused.
Products with a factory fitted supply cable are designed to be wired directly to an
isolator or fitted with a line plug.
Products without a factory fitted supply cable require a permanent connection to a fused
and isolated supply. The product's electrical access panel should be temporarily
removed, and connections made to the internal terminals.
When connecting the product to the power supply, the plug or isolating switch should be
accessible, easy to remove, and within reach of the operator.
The supply MUST incorporate an earth (ground).
Supply
Terminal Label
Cable Colour
Supply Types
Live - Neutral
Reversible or Live-
Live
1-phase L1
Brown
to live
to either power
conductor
(For USA 200-240V,
connect L1)
N / L2
Blue
to neutral
to the other power
conductor
(For USA 200-240V,
connect L2)
PE
Green/ Yellow
to earth
(ground)
to earth (ground)
Electrical Connection Details:
2.4
Gas Supply
The MFS/1 ISO is intended to be used with nitrogen gas and is fitted with nitrogen
flowmeters.
The MFS/1 ASTM is intended to be used with air and is fitted with air flowmeters.
There are two gas connections at the back of the product. The upper gas connection is
the gas inlet; the lower gas connection is the gas outlet.
The maximum gas supply pressure must be regulated to 200 mbar (0.3 psi).
There are two flowmeters mounted in the control panel. The left hand flowmeter is used
to adjust the flow rate of the gas passing into the oven chamber. The incoming gas
passes through this flowmeter then into the heated chamber. The gas enters the upper
part of the chamber behind the air guide where it is pre-heated and brought to the front
of the chamber. The gas then enters the portion of the chamber that contains the test
samples flowing over and around the samples and exiting at the back of the chamber.
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