Beckman Coulter Microfuge 20 Series, Инструкция по эксплуатации

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B30162AA 1-3
Description
Chassis
1
Safety Features
Microfuge 20 series centrifuges have been designed and tested to operate safely indoors at altitudes
up to 2000 m (6562 ft).
Instrument safety features include:
•
An electromechanical door-locking mechanism to prevent operator contact with spinning
rotors. When the door is closed it locks automatically. It can be unlocked only by pressing the
OPEN
key, and opened only when the power is on and the rotor is at rest.
•
The centrifuge can only be started when the door is properly closed. The electrical lock must
be locked. The door can only be opened when the rotor has stopped. If the door is opened by
way of the emergency release system during operation, the centrifuge will immediately switch
off and decelerate brakeless. If the door is open, the drive is completely separated from the
mains power supply, that is, the centrifuge cannot be started.
•
A steel barrier surrounds the rotor chamber to provide full operator protection.
•
An overspeed system continuously monitors the rotor during centrifugation. The system
includes a magnetic sensor on the drive motor. Throughout the run, checks are made to ensure
that the rotor does not exceed set speed.
•
The centrifuge feet, made of rubber, have been designed to minimize possible rotation in the
event of a rotor mishap.
•
An internal system continually monitors the sensor signals to confirm that they are within the
expected values. Malfunctions are indicated by error messages with a number in the speed/RCF
display. See
Troubleshooting .
•
For the Microfuge 20R, if the temperature inside the rotor chamber rises above 50 °C, the drive
system will be switched off automatically. The centrifuge cannot be restarted until it has
cooled.
Chassis
Housing
The centrifuge housing is made of high-performance engineered plastic, finished with urethane
paint. The control panel is covered by a protective overlay made of coated polycarbonate.
Door
The door is made of a solid sheet of steel, encased in foam molding. In the center of the door is a
window for strobe viewing. An electromechanical door lock system prevents a run initiation unless
the door is shut and latched. The door is locked when a run is in progress and can be opened only
when the rotor is stopped. In the event of a power failure, the door lock can be manually released
for sample recovery (see
CHAPTER 3, Troubleshooting ).