dymax 110, User Manual

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Dymax Model 110 & 210 Spray Valves User Guide
Troubleshooting
Table 1. Troubleshooting Chart for the Dymax Spray Valve
Problem Possible Cause Corrective Action
Valve does not
cycle
Air pressure to air section too
low
Increase air pressure to 60-100 psi
Packing Nut (F) is too tight
Loosen Packing Nut (F) until valve
just begins to cycle, retighten
Stroke Adjuster (O) is bottomed
out Back out Stroke Adjuster (O) by
turning it counter-clockwise
Material is cured in the valve Disassemble and clean valve
Valve was assembled without
lubricating the O-ring seals Disassemble valve, lubricate seals
and re-assemble
Material leaks
from valve tip
Needle (C) and/or Seat (B) are
worn
Replace parts as necessary
Seat (B) is not tightened enough
against Fluid Section (D) Use seat wrench to tighten Seat
(B) onto Fluid Section (D)
Valve leaks from
mid-section
Packing Nut (F) is loose Tighten Packing Nut (F) until snug
Packing (E) is worn Replace Packing (E)
Valve does not
spray anything
Fluid pressure is to low Increase fluid pressure
Material cured in Fluid Section (D) Disassemble valve and clean
Air bubbles in
fluid
Valve not properly purged
Flip valve upside down and cycle
until air bubbles are removed
Problem with fluid delivery
system
Diagnose and repair
Atomizing air pressure set too
high
Reduce atomizing air pressure
Spray rate too
fast Stroke Adjuster (O) set out too
far Turn Stroke Adjuster (O) clockwise
toward the zero mark
Spray rate too
slow Stroke Adjuster (O) set too
close to the zero mark Turn Stroke Adjuster (O) counter-
clockwise