Eppendorf 5000 Digital Tier Shake - Manual (Page 12)

12
New Brunswick Operating Manual
1.6.2 Bearings
Innova shakers employ sealed lubricated ball bearings of the highest quality.
Sealed bearings minimize the generation of airborne particulates that could be
disadvantageous in clean rooms or controlled environment areas.
This bearing design, which requires no maintenance, has performed reliably in
New Brunswick shakers for many years.
1.6.3 Motor
The Innova 5000 shaker uses a brushless ball bearing DC motor. This motor
provides high torque along with quiet, efficient operation and low
maintenance. The rugged motor has a rating of 1/3 horsepower.
1.7 Electronic Boards
The main control board for the Innova shaker has the following functions:
• Non-volatile memory for storage of key parameters during power interruption.
• Speed sensing, electronic commutation and power control for the brushless DC
drive motor.
• Maintaining an elapsed running time clock.
• Containing firmware for shaker control as well as recognition of an expansion
connector for option modules.
• Providing an operator interface via displays, audible alarm and connection to the
keypad module (keypad buttons and display graphics).
The optional speed/monitor module is designed to piggy-back onto the main board via
an expansion connector. It has the following functions:
• Control of analog power supplies.
• Providing remote monitoring capabilities by supplying analog outputs for speed
that are compatible with chart recorders and analog data acquisition systems.