Friction Reduction System (Frs); Temperature Sensing And Control; Overtemp System; Name Rating Plate - Beckman Coulter Avanti J-26XP Instructions For Use Manual

Friction Reduction System (FRS)

The friction reduction system (FRS) uses a mechanical rotary vane vacuum pump to reduce
chamber pressure to approximately one-quarter atmosphere (190 mm Hg). The pump turns on after
the run is started, before rotor friction reaches a high level. When the required vacuum level is
reached, the pump turns off. Vacuum in the chamber is vented during rotor deceleration.

Temperature Sensing and Control

The temperature control system is cooled by circulation of a non-CFC-based refrigerant. The
temperature control system is activated when the centrifuge power is on and when the door is
closed.
A thermistor in the rotor chamber continuously monitors the chamber temperature. The system
calculates the chamber temperature required to maintain the set rotor temperature, 2°C.
Although the chamber temperature fluctuates during operation, the rotor's large mass keeps the
sample temperature substantially constant. At the end of a run, the system continues controlling
the temperature to prevent freezing or overheating (more than 4°C over set temperature) of the
sample.

Overtemp System

An overtemp (over temperature) system provides sample protection and safety for the user.
• During a run, if the system temperature rises 4°C above the set temperature, the
diagnostic will light. The run will continue, unless stopped by the user. If the temperature rises
8°C above the set temperature, the system will shut down (using maximum brake).
• The system will always shut down (using maximum brake) if the system temperature reaches
50°C. The centrifuge cannot be restarted until the chamber has cooled.

Name Rating Plate

The name rating plate is affixed to the rear of the centrifuge. Check that the line voltage agrees with
the voltage listed on this name rating plate before connecting the centrifuge. Always mention the
serial number and the model number shown when corresponding with Beckman Coulter regarding
your centrifuge.

Controls and Indicators

Power Switch

The power switch is located below the control panel (see
switch ( , on;
I
J326XP-IM-5AB
, off) controls electrical power to the centrifuge.
O
Name Rating Plate
Figure 2.1). This two-position rocker
2
Description
TEMP
2-3