Temperature Setpoint Cannot Be Achieved - Thermo Scientific VF-F20-A Operating Manual

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8 Troubleshooting
8.3.3

Temperature Setpoint Cannot Be Achieved

Causes
Remedial Action
Page 214
10. Then switch the fraction collection valve to flush position, flush the
internal surface of flush buffer loop, needle capillary and needle into
the needle wash port at the maximum pump flow rate for
approximately 1 minute.
11. Then switch the fraction collection valve to waste position, flush the
waste line at the maximum pump flow rate for approximately 1
minute. Afterward, turn off the pump flow.
12. Restart the device with its main power switch. The device performs
a self-test. The needle initializes and adjusts its position.
13. Afterward, turn off the pump flow.
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The ambient temperatures may be out of specified range.
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The Fraction collector compartment may not be insulated
sufficiently.
Check if the door is closed properly.
Integral Fraction Collector FT (VF-F20-A) Operating Manual