V&P Scientific, Inc.
2
Technical Note 329A
TUMBLE STIRRER INSTALLATION
Caution: Operating the Tumble Stirrer in close proximity of ferromagnetic, aluminum
materials, or both, is not recommended.
We recommend that the Magnetic Tumble Stirrer be installed as far away from ferromagnetic
material as possible. The closer and larger the magnetic material is to the Magnetic Tumble Stirrer
and the faster the magnetic cylinder is spinning, the greater the torque that is required.
Also, large/thick aluminum structures should be avoided. Although aluminum is not magnetic it
will cause a drag on the magnetic field due to eddy currents being formed when magnetic flux
lines pass through it. The eddy current effect will also cause the aluminum block to heat up. A
large mass of aluminum will cause a significant drag and result in greater strain on the motor.
This strain can shorten the motor life. This is not covered under V&P Scientific, I
nc.’s warranty for
this product.
If installing away from these materials is unavoidable, test run parameters before operating
instrument without supervision for long periods. The Tumble Stirrer will turn itself off when
temperature of the motor exceeds its safety limit of 135
o
C. If this happens, turn off power supply
and allow motor to cool before re-starting. Modify operating speed parameters to prevent over-
heating. Repeated over-heating could reduce product longevity.
Parts of the VP 710C5 series Tumble Stirrer
Connection
Cable
Control Unit
Tumble Stirrer
Stirrer
Connection
Ports
Power
Cord
Power
Cable
Port
Motor End
Magnetic
Cylinder End
Power
On/Off
Switch
