Troubleshoot the CF900 hopper by symptom
KEY
PR1 = Pinch valve pressure (Pinch valve)
PR2 = Conveying pressure (Vessel)
No abrasive delivery even though there is enough abrasive in the ADS for operation
▪ PR2 may be set too low. Increase the pressure to PR2, but maintain at least a 3.45 bar (50 psi)
difference between PR1 and PR2.
▪ Air and electrical supply connections may be interrupted. Inspect all air and electrical supply
connections.
▪ The silo or vessel low-abrasive switch is malfunctioning. Test the function of the switches. If they
do not function correctly, call Flow Service.
No abrasive delivery, and the yellow warning indicator and/or the audible signal is not
on
• The bulb to the yellow warning indicator may have burned out. Test the function of the indicator,
and then replace the bulb if needed.
• Test the function of the audible signal, and then replace it if needed.
• If the container is empty and the indicator and audible signal are not on, call Flow Service.
The abrasive metering valve runs dry between fill cycles
• PR2 may be set too low. Increase the pressure to PR2, but maintain at least a 3.45 bar (50 psi)
difference between PR1 and PR2.
• Flowrate demand from metering valve exceeds 1.2 lb/min. Order a high flowrate kit for the valve.
Call Flow Service for more information.
© 2021 Flow International Corp.
Retrieved from Flow KB on April 14, 2021 PST
Ancillary option: PASER CF900 Abrasive Delivery System
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