Graco ProMix 2KE Operation page 51

B Pressure
Too High
A Pressure
F . 50. A/B Control Range with Properly Sized
IG
Restrictor
Component A (continuous flow)
Component B (pulsed injection)
F . 52. Schematic Diagram of Dynamic Dosing Operation
IG
(for complete system troubleshooting, see Alarm Troubleshooting beginning on page 55)
Error Message
Ratio Low Error (R1)
Ratio High Error (R4)
3A0869C
B Pressure
Too Low
B Pressure
Table 4: Dynamic Dosing Troubleshooting Guide
• Increase A pressure or decrease B pressure.
• Use a smaller restrictor.
• Increase B pressure.
• Clean restrictor or use a larger size.
• Verify B valve is opening properly.
B Pressure
Too High
A Pressure
NOTE: If the restrictor is too small, it may be
necessary to supply more differential pressure
than is available in your system.
F . 51. A/B Control Range with Too Large a
IG
Restrictor
Proportioned Material
Solution
Dosing Options
B Pressure
Too Low
B Pressure
To Static
Mixer
51