Setup Mode Details

 

 

 

 

 

 

 

 

 

 

e

 

 

 

 

 

 

 

 

 

g

 

 

 

 

 

 

 

 

n

 

 

 

 

 

 

 

 

a

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

l

 

 

 

 

 

 

 

 

o

 

 

 

 

 

 

 

 

r

 

 

 

 

 

 

 

 

t

 

 

 

 

 

 

 

 

n

 

 

 

 

 

 

 

 

o

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

BPressure Too High

BPressure Too Low

 

 

 

 

 

 

 

 

 

 

 

 

e

 

 

 

 

 

 

 

 

 

 

 

g

 

 

 

 

 

 

 

 

 

n

 

 

 

 

 

 

 

 

 

a

 

 

 

 

 

 

 

 

 

lR

 

 

 

 

 

 

 

 

 

o

 

 

 

 

 

 

 

 

 

 

r

 

 

 

 

 

l)

 

 

 

t

 

 

 

 

 

 

 

n

 

 

 

 

 

 

l

 

o

 

 

 

 

 

 

 

a

 

 

C

 

 

 

 

 

 

m

 

 

 

 

 

 

 

 

os

 

 

 

 

 

 

 

 

o

 

 

 

 

 

 

 

 

 

t

 

 

 

 

 

 

 

 

 

 

(

 

 

 

 

 

 

 

 

 

 

B Pressure

Too High

BPressure Too Low

A Pressure B Pressure

A Pressure B Pressure

FIG. 50. A/B Control Range with Properly Sized Restrictor

NOTE: If the restrictor is too small, it may be necessary to supply more differential pressure than is available in your system.

FIG. 51. A/B Control Range with Too Large a Restrictor

Component A (continuous flow)

Proportioned Material

To Static

Mixer

Component B (pulsed injection)

FIG. 52. Schematic Diagram of Dynamic Dosing Operation

Table 2: Dynamic Dosing Troubleshooting Guide

(for complete system troubleshooting, see Table 3 beginning on page 52)

Error Message

Solution

 

 

 

 

 

Ratio Low Error (R1)

• Increase A pressure or decrease B pressure.

 

 

• Use a smaller restrictor.

 

 

Ratio High Error (R4)

• Increase B pressure.

 

• Clean restrictor or use a larger size.

 

• Verify B valve is opening properly.

 

 

 

3A0868G

49

Page 49
Image 49
Graco 3A0868G Pressure Too High Pressure Too Low Pressure B Pressure, B Control Range with Properly Sized Restrictor