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Model 826 Dispensing Valve User Guide
Troubleshooting
Table 1. Troubleshooting Chart for Model 826 Dispensing Valve
Problem
Possible Cause
Corrective Action
The valve does
not dispense
anything
The supply air pressure is too low
Increase the supply air pressure
Material is cured in the tip
Disassemble and clean the tip
The flow adjustment is not properly
adjusted
Follow the flow adjustment
procedure
There are air
bubbles in the
fluid
The valve is not properly purged
Point the valve up and cycle it until
the air bubbles are removed
There is a problem with the
material reservoir and the fluid
delivery system
Diagnose and repair
Material leaks
from the valve tip
The flow adjustment is not properly
adjusted
Follow the flow adjustment
procedure
There is an air bubble trapped in
the fluid section of the valve or in
the dispense tip
Point the valve up and cycle it until
air bubbles are purged out
The dispense rate
is too fast
The fluid pressure is set too high
Decrease the fluid pressure
The dispense tip gauge is too large
Replace the dispense tip with a
smaller size tip
The flow adjustment is not properly
adjusted
Follow the flow adjustment
procedure
The dispense rate
is too slow
The fluid pressure is set too low
Increase the fluid pressure
The dispense tip gauge is too small
Replace the dispense tip with a larger
size tip
The flow adjustment is not properly
adjusted
Follow the flow adjustment
procedure
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