dymax 826 Manual do utilizador - Página 14

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Model 826 Dispensing Valve User Guide
14

Troubleshooting

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