Operator’s Manual: ThermoJet
Chapter 5: Display Screens
© SP Industries, Inc.
200-31974-999 Rev. 009
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Air Flow Calibration -
From the Air Flow Calibration screen, the FTS service technician
can either initiate an automatic scan through the air flow settings from 5 to 20 SCFM, or manually
choose only the flows of interest. In either case the machine should start off in Idle Mode and have
been defrosted before attempting to calibrate. The service technician connects an appropriate flow
meter to the nozzle exit and compares the measured flow to the expected flow. If a discrepancy
exists, the service technician adjusts the valve position (stepper motor) until the two values agree and
then press “OK” to save the new operating point. When finished, pressing “Complete” returns the
service technician to the main maintenance screen.
Figure 28 – Air Flow Calibration Screen
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Compressor Maintenance -
The Compressor Maintenance screen allows the FTS
service representative to diagnose refrigeration problems. The low stage compressor is interlocked; it
will not turn on unless the high stage compressor is on and the cascade condenser temperature is
<38°C.
Figure 29 – Compressor Maintenance Screen
Compressor Maintenance Screen
Air Flow Calibration Screen
