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Controls, Displays, and Indicators
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2
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3-8
Diagnostic Indicators
These indicators, numbered 1 through 16, help troubleshoot a
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4
problem when the centrifuge is not operating properly. When any
of the indicators light, it means a problem exists that is affecting the
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8
operation of the centrifuge. Each indicator represents a different
problem; some problems will cause the centrifuge to shut off, others
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12
will not, depending on the seriousness of the problem. Of the
sixteen indicators, only eleven (1-12) are currently being used; the
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16
other five are there for future use, if needed. The meaning of each
light is given below, along with the corrective action.
CONTROL SYSTEM FAILURE
1
Turn the main power off and back on, then restart the run. If the
light comes on again, notify your Thermo Field Service Engineer.
PROGRAM FAILURE
2
Notify Thermo Field Service Engineer.
MEMORY SYSTEM FAILURE
3
Notify Thermo Field Service Engineer.
DRIVE SYSTEM FAILURE
4
Notify Thermo Field Service Engineer.
NO ROTOR
6
The microcomputer has detected a sudden and sustained increase
in rpm, because there was no rotor installed when the START
switch was pressed. The centrifuge ran for a few seconds then shut
off. Install a rotor and restart the run.
REFRIGERATION SYSTEM FAILURE
7
There was no apparent drop in chamber temperature thirty seconds
after the refrigeration system started to cool. Notify your Thermo
Field Service Engineer.
TEMPERATURE SENSOR FAILURE
8
Chamber air temperature sensor has failed. Notify your Thermo
Field Service Engineer.
TEMPERATURE SENSOR FAILURE
9
Chamber wall temperature sensor has failed. Notify your Thermo
Field Service Engineer.
COMPUTER SYSTEM FAILURE
10
The computer has received erroneous information. The condition
will clear and the light will go out if the problem is momentary. If
the condition persists, notify your Thermo Field Service Engineer.
®
SORVALL
Centrifuges
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