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PC200 PVA
Revision G (2019)
51 of 56
Troubleshooting
Troubleshooting
Problem
Possible Cause
Corrective Action
Valve Does Not
Cycle
•
Air pressure to air section is too
low
•
Stroke adjustment screw is
fully engaged
•
Material is cured in the valve
•
Valve was assembled without
lubricating the O-rings
•
Increase the air pressure to 60-100
psi
•
Turn stroke adjustment screw counter-
clockwise to increase snuff back
•
Disassemble and clean valve
•
Disassemble valve, lubricate O-
rings and assemble again
Material Leaks
From Static
Mixer
•
Snuff back is set too low
•
Lip seals are worn
•
Air trapped in the valve or
static mixer
•
Turn stroke adjustment screw counter-
clockwise to increase snuff back
•
Replace lip seals
•
Bleed valve until air is removed
Air Bubbles In
Fluid
•
Valve is not correctly bled
•
Problem with fluid delivery
system
•
Bleed the valve until the air is
removed
•
Diagnose and repair
No Flow From
Valve
•
Manifold is blocked
•
Air cylinder does not operate
•
Static mixer is plugged
•
Problem with material supply
•
Examine and clean manifold
•
Increase operating air pressure to 80
psi. Inspect valve for cured material
•
Replace static mixer
•
Examine material supply to the valve
Valve Drips
Continuously
After Shutoff
•
Snuff back is set too low
•
Lip seals are defective or worn
•
Valve rods are defective or
worn
•
Turn stroke adjustment screw
counterclockwise to increase snuff
back.
•
Examine and replace lip seals
•
Examine and replace valve rods
Summary of Contents for PC200 Series
Page 41: ...PC200 PVA Revision G 2019 41 of 56 PC200RW Series Mechanical Drawings ...
Page 43: ...PC200 PVA Revision G 2019 43 of 56 How to Order Figure 63 Part Number Configuration ...
Page 45: ...PC200 PVA Revision G 2019 45 of 56 Figure 64 Accessories and Options ...