dymax 110 Manual do utilizador - Página 16
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Dymax Model 110 & 210 Spray Valves User Guide
Troubleshooting
Table 1. Troubleshooting Chart for the Dymax Spray Valve
Problem
Valve does not
cycle
Material leaks
from valve tip
Valve leaks from
mid-section
Valve does not
spray anything
Air bubbles in
fluid
Spray rate too
fast
Spray rate too
slow
Possible Cause
Air pressure to air section too
low
Packing Nut (F) is too tight
Stroke Adjuster (O) is bottomed
out
Material is cured in the valve
Valve was assembled without
lubricating the O-ring seals
Needle (C) and/or Seat (B) are
worn
Seat (B) is not tightened enough
against Fluid Section (D)
Packing Nut (F) is loose
Packing (E) is worn
Fluid pressure is to low
Material cured in Fluid Section (D)
Valve not properly purged
Problem with fluid delivery
system
Atomizing air pressure set too
high
Stroke Adjuster (O) set out too
far
Stroke Adjuster (O) set too
close to the zero mark
Corrective Action
Increase air pressure to 60-100 psi
Loosen Packing Nut (F) until valve
just begins to cycle, retighten
Back out Stroke Adjuster (O) by
turning it counter-clockwise
Disassemble and clean valve
Disassemble valve, lubricate seals
and re-assemble
Replace parts as necessary
Use seat wrench to tighten Seat
(B) onto Fluid Section (D)
Tighten Packing Nut (F) until snug
Replace Packing (E)
Increase fluid pressure
Disassemble valve and clean
Flip valve upside down and cycle
until air bubbles are removed
Diagnose and repair
Reduce atomizing air pressure
Turn Stroke Adjuster (O) clockwise
toward the zero mark
Turn Stroke Adjuster (O) counter-
clockwise