Working With D-500; Working With Speed Control - Scilogex D-500 User Instruction Manual

Working with D-500

The optimal immersion depth of the dispersing shaft is approximately 2/3 below the
liquid surface and 1/3 above the bottom of the beaker. When inserting the dispersing
shaft slightly slanted (approximately at an angle 15 degrees), it improves the efficiency
of the disperser. The dispersing shaft should not be immersed more than 30mm below
the flange.

Working with Speed Control

The drive and control are in the same housing. Before using the unit, run a test
without the dispersing shaft by switching the ON button on the front of the drive.
The speed is selected by the control knob on the top of the drive. Approximate rpm of
the drive is: 1= 10,000rpm 2= 14,000rpm 3= 18,000rpm 4= 22,000rpm
5= 26,000rpm 6= 30,000. (+/- 1000rpm at each setting.)
For an emergency stop, press the large button on the drive.
For reaching the best effects, the rotor speed of D-500 should be adapted to the
dispersion problem.
IMPORTANT
The maximum rotor speed depends on the kind of sample and its viscosity. The
speed is reduced by its viscosity in order to protect the drive from overload. If the
viscosity is too high, the motor will stop automatically to prevent damage to the
equipment. The electronic control system prevents damage to the motor drive.