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360113-1
Servicing the cell washer
4
Servicing the cell washer
This section explains how to access serviceable parts, as well as how to perform some service procedures.
4.1
Testing whether the rotor speed is within the
design tolerance
NOTE:
You cannot test the decant speed, but you can change it by changing a global
parameter value. For instructions, refer to the Operation Manual.
You can measure the rotor speed to determine whether it is within the design tolerance.
The cell washer has a sight window in the lid and an optical reference on the rotor so that you can easily
measure the speed of the rotor during operation.
When the rotor is programmed to spin at 3500 r/min (RPM), the measured speed should be
3500 r/min ± 20 r/min.
For more information and instructions to program and use the cell washer, refer to the Operation Manual.
You will need the following to test the rotor speed:
►
Laser tachometer (calibrated and capable of measuring r/min)
!
WARNINg:
Prior to using the laser tachometer, review all safety and usage instructions
provided by the manufacturer.
To test whether the rotor speed is within the design tolerance
NOTE:
Regulations for your organization may recommend test methods different from
what appear here. Use the appropriate methods for your organization.
1
Install the rotor.
2
Program the Spin (S) program with a spin speed of 3500 r/min and a spin time that is long enough for
you to measure the speed.
3
Start the Spin (S) program by pressing the SPIN button.
4
While the rotor is spinning and 3500 is displayed on the message screen, point the tachometer’s laser
beam through the sight window on the lid. As the rotor spins, the laser momentarily reflects off the
optical reference on the rotor.
5
Obtain the reading from the tachometer. If the speed is not within the tolerance of 3500 r/min ± 20
r/min, follow the appropriate troubleshooting steps to determine how to proceed.
