❖
Mechanical energy can lead to breakage of
glass vessels. Use with care.
WARNING!
The Overhead Stirrer will
automatically restart after a power failure.
It may also restart in the event of a fault
or mechanical interruption (stall).
Operation
Fixing a Stirrer Paddle
The chuck is designed to grip a stirrer shaft up
to a maximum of 13mm diameter. Loosen the
jaws of the chuck by turning clockwise. Place a
stirrer shaft in the chuck and tighten by turning
anti clockwise. The chuck only requires
tightening by hand.
The chuck protective cover is designed for use
with stirrer shafts up to 8mm diameter only. It
grips the top of the shaft preventing ingress of
corrosive materials. If a stirrer shaft with a
diameter greater than 8mm is used, remove the
protective cover before fixing the shaft in the
chuck.
Hollow Spindle (SS20 & SS30 only)
Models SS20 & SS30 have a hollow spindle
enabling a stirrer shaft of diameter up to 8mm
to be passed through the Stirrer body and
adjusted from the top. Open the chuck and
remove the top grommet. Feed the shaft
through the chuck and into the Stirrer until it
protrudes through the top. Tighten the chuck as
described above.
Using the Stirrer (SS10, SS20 & SS30)
Clamp the Overhead Stirrer securely to a stand
and fix a stirrer paddle in the chuck (as described
above). Check that the Stirrer is switched OFF
before inserting the mains cable into the short
flying lead and connecting to the mains
electricity supply. When the supply is available
from the mains, a green light will illuminate on
the front of the Stirrer.
Selecting the Stirring Speed (SS10 & SS20)
Switch the Stirrer ON by the mains on / off
switch. A yellow light will illuminate on the front
of the Stirrer. Rotate the speed control knob to
select the required speed of rotation. A soft start
facility is built into the Stirrer so there will be a
slight delay between selection and rotation.
Selecting the Speed / Torque mode
(SS30 only)
Switch the SS30 Stirrer on by the mains on / off
switch. A yellow light will illuminate on the
front of the Stirrer. Rotate the speed control
knob to select the required mode:
- Clockwise selects the high speed lower torque
mode (max. speed/ torque 2000rpm / 27Ncm)
- Anticlockwise selects the low speed higher
torque mode (max. speed/torque 500rpm /
90Ncm).
A soft start facility is built into the Stirrer so
there will be a slight delay between selection
and rotation and when switching between
torque modes.
Overload Protection (SS10, SS20 & SS30)
If the load on the Overhead Stirrer is too great a
red warning light on the front of the Stirrer will
illuminate and the power to the motor will be
limited to protect the Stirrer from damage. The
Stirrer will continue to run at the limited speed
until the load is reduced.
If there is a danger of overheating the power to
the motor will be further reduced. If the danger
of overheating becomes severe the Stirrer will
stop. The unit must be switched OFF by the
mains on / off switch and allowed to cool before
it can be used again.
Maintenance & Servicing
WARNING:
Ensure the unit is
disconnected from the mains electricity
supply before attempting maintenance or
servicing.
Periodically clean the instrument using a damp
cloth and mild detergent solution. Do not use
harsh or abrasive cleaning agents.
Any repairs or replacement of parts MUST
be undertaken by suitably qualified
personnel.
2
Summary of Contents for Stuart SS10
Page 26: ...Notes ...
