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J:\Std User Instructions\099D HST30N, HST230N, HST23005, HST23010, HST23020_SERIES STIRTESTERS.doc
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The controller is protected against overloads with a circuit breaker. If the circuit breaker
trips, an overload condition might have occurred.
Your stirrer drive requires very little maintenance. Keep it clean and avoid spills. Inspect
the motor brushes occasionally (with the power cord disconnected) to make sure they
haven’t worn excessively. Do not use if electrical cords are worn or frayed. If you find it
necessary to send it to the factory for repair, call for a return goods authorization number.
Output signals for recorders, etc. are available via the 4-pin socket on the rear of the
controller with the following connections:
Pin #1 = -Common
Pin #2 = +Torque (1mV/oz.in.)
Pin #3 = +Speed (1mV/RPM)
Pin #4 = -Common
To utilize these outputs, purchase a mating cable and plug part number 099D A052060.
Connect cable too high-impedance (1 meg ohm or more) of the external device which
must be isolated from earth ground. Make sure that these inputs are uncommitted to
ground, floating, and can sustain common mode voltage of 1500V above ground.
Remove any connections grounding either input.
Warning: These connections are not isolated from AC line and are at a potential of 60-
120 volts above ground. Do not touch or ground any of the four signal leads (Pins 1-4). A
protective 1/16 amp fuse in series with the common terminals is provided in fuseholder
on rear of the controller, but damage may result if a ground occurs. Replace only with a
1/16 amp fuse of the same type and rating.
LIMITED WARRANTY
Glas-Col warrants products of its manufacture to be free from defects in material and
workmanship
for one year
and agrees to repair or replace without charge any products
found defective upon examination at the factory. With proper care and operation, Glas-
Col products will give long and efficient service. Chemical spillage, overheating,
overloading and general misuse will greatly reduce the service life. Glas-Col is not
responsible for damage to apparatus due to improper installation or through attempts to
operate the apparatus beyond its rated capacity, intentional or otherwise. Normally
expendable parts are not covered by this warranty.
LIMITATION OF WARRANTIES
APART FROM SUCH WRITTEN STATEMENT OF WARRANTY, THERE ARE NO
WARRANTIES, IMPLIED OR STATUTORY, WHICH EXTEND BEYOND THE
DESCRIPTION OF THE PRODUCTS ON THE FACE HEREOF.
Glas-Col products are intended for legal and legitimate purposes in commercial
laboratory and industrial settings.
Glas-Col reserves the right to make product refinements without prior notice.
