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Saturn model 877 Iss.08– 08/14
ON ARRIVAL
On unpacking the Saturn you will find 4 parts:-
1.
The Controller.
2.
The furnace.
3.
The equalizing sphere complete with its pockets.
4.
A packet containing the control thermocouple, a spare set of windings and this instruction book.
To assemble the furnace, use the following procedure:-
a.
Carefully remove all the packing material.
b.
Stand the furnace on a flat surface and carefully unscrew the upper half of the outer sphere.
c.
Lift off the upper half of the sphere and the ceramic fibre insulation – dust precautions should be taken at this
point.
d.
You will then see the hollow half of the inner sphere containing the heater windings.
e.
Two wires come from the top of the hollow sphere. Without disturbing these wires, carefully lift the upper
hemisphere from its locating pegs and slide in the equalising block with its pockets. This normally requires
two people.
Carefully position the equalising block until its sits correctly in the grooves provided and is symmetrically
placed inside the furnace. Use some small pieces of insulation (supplied) to pack underneath the pockets so
they sit on a soft bed of insulation rather than the ceramic heater support. This protects the pockets and
improves the performance.
Beneath the furnace is an adjustment which will allow you to adjust the height of the heater winding ceramic.
Adjust so that the sphere re-assembles without undue pressure on the equalizing block.
f.
Reassemble the furnace.
g.
Unpack the controller and connect the white cable with the IP65 connector to the white cable from the
lower half of the furnace using the colour coded connector.
h.
Connect to a suitable electrical supply. Check the ratings plate on the controller for details.
i.
Push the control thermocouple into one of the pockets 150mm to the mark on the thermocouple and
connect to the thermocouple input of the controller.
It is important not to fully immerse the control sensor into the equalising block pocket. Doing this will create
a large thermal lag between the controller and the heaters thus introducing instability and the very long delay
in reaching the setpoint.