Graco kable telewizyjne 3A0869H Podręcznik

Instrukcje PDF
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Graco kable telewizyjne 3A0869H
Dosing Options
54 3A0869H
F
IG
. 53. A/B Control Range with Properly Sized
Restrictor
B Pressure
Too High
B Pressure
Too Low
C
o
n
t
r
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R
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g
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A Pressure B Pressure
F
IG
. 54. A/B Control Range with Too Large a
Restrictor
B Pressure
Too High
B Pressure
Too Low
C
o
n
t
r
o
l
R
a
n
g
e
(
t
o
o
s
m
a
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l
)
A Pressure B Pressure
NOTE: If the restrictor is too small, it may be
necessary to supply more differential pressure
than is available in your system.
F
IG
. 55. Schematic Diagram of Dynamic Dosing Operation
Table 4: Dynamic Dosing Troubleshooting Guide
(for complete system troubleshooting, see Alarm Troubleshooting beginning on page 58)
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.
Component A (continuous flow) Proportioned Material
To Static
Mixer
Component B (pulsed injection)
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