Graco 234129, Инструкция по эксплуатации

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Troubleshooting and Fault Recovery
309738L 49
Table 9 - Fault Priority Table (continued)
Fault
Priority Fault Name Fault Description Causes Solutions
9 Low Outlet
Pressure Output pressure of the
PrecisionFlo LT regulator
is below the limit set for
operation. If this fault
occurred while doing a
pressure calibration, sys-
tem pressure was too
low (<500 psi [3.4MPa,
34 bar] at the regulator
outlet) to complete the
calibration Incorrect limit set Verify limit is set correctly
No or insufficient material flow Increase material flow rate
Dispense valve needle is stuck
closed Dislodge and inspect needle
Dispense valve leaking Repair dispense valve
Regulator not operating properly Repair regulator
Pump wink passed through outlet Recalibrate PrecisionFlo LT or
increase pump pressure
Failed transducer Check transducer, replace if failed
Incorrect pressure amplification
switch setting Verify switch is set correctly
10 High Volume Material dispensed dur-
ing the last dispense
cycle was above the
amount established by
request and above the
allowable (entered) toler-
ance Material viscosity is outside flow
compensation window Verify material characteristics,
recalibrate if necessary. Increase
Bead scale
PrecisionFlo LT regulator is not
regulating properly Check regulator, repair if neces-
sary. Increase pressure to regula-
tor above.
Incorrect volume or tolerance
when using Volume Monitor or
Batch Dispense Enter correct values or minimum
operating pressure
11 Low Volume Material dispensed dur-
ing the last dispense
cycle was below the
amount established by
request and below the
allowable (entered) toler-
ance Partially plugged tip or supply
system. Error is outside flow com-
pensation window Clean tip and/or supply system.
Insufficient flow to PrecisionFlo LT
regulator inlet. Error is outside
flow compensation window Increase flow rate to PrecisionFlo
LT regulator inlet
Material viscosity is outside flow
compensation window Verify material characteristics,
recalibrate if necessary
Material viscosity increased Increase bead scale
PrecisionFlo LT regulator is not
regulating properly Enter correct values or set the tol-
erance to 0% to disable this fault
12 Low Flow
Rate Measured flow rate less
than desired flow rate
minus tolerance Fluid supply too low to achieve
desired flow rate Increase fluid supply pressure or
check for clogged filter
Tip plugged Clean/replace tip
No air pressure to solenoid valves Turn on air to solenoid valves
No flow meter signal Check cable and sensor
No material supply Replace drum or turn on pumps
Incorrect flow tolerance or flow
fault time Enter correct tolerance or flow fault
time