Graco TI12553a Manual De Usuario
System Operation
88
312779E
Mix Manifold Valve Settings
To open dose or purge valves, turn hex nut (E)
counter-
clockwise. To close, turn clockwise. See Table 13 and
F
F
IG
. 99.
Table 12: Dynamic Dosing Troubleshooting Guide
Warning/Alarm Message
Solution
B Pressure Too Low (see F
•
Increase B pressure.
•
Clean restrictor or use a larger size.
•
Verify B valve is opening properly.
B Pressure Too High
•
Increase A pressure or decrease B pressure.
•
Use a smaller restrictor.
Off Ratio Low
•
Increase A pressure or decrease B pressure.
•
Use a smaller restrictor.
Off Ratio High
•
Increase B pressure.
•
Clean restrictor or use a larger size.
•
Verify B valve is opening properly.
F
IG
. 99. Valve Adjustment
E
TI11581a
Table 13: Mix Manifold Valve Settings
Valve
Setting
Function
Dose (see
F
F
IG
. 99)
Hex nut (E) 1-1/4 turns out
from fully closed
from fully closed
Limits maximum fluid flow rate into integrator
and minimizes valve response time.
and minimizes valve response time.
Purge (see
F
F
IG
. 99)
Hex nut (E) 1-1/4 turns out
from fully closed
from fully closed
Limits maximum fluid flow rate into integrator
and minimizes valve response time.
and minimizes valve response time.
. 91)
Fully open during Run/Mix
operation
operation
Closes component A and B ports to integrator
during ratio check or meter calibration. Open
ports during Run/Mix operation.
during ratio check or meter calibration. Open
ports during Run/Mix operation.
. 91)
Fully closed during Run/Mix
operation
operation
Open to dispense component A and B while
calibrating meters. Do not open sampling
valves unless fluid shutoff valves are closed.
calibrating meters. Do not open sampling
valves unless fluid shutoff valves are closed.