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Troubleshooting (cont)
Plumbing Troubleshooting Chart
SYMPTOM POSSIBLE CAUSE POSSIBLE SOLUTION
Loses pressure in
MANUAL
• Pump Air-lock • Clean strainer
• Larger hoses
Little or no pressure
adjustment in MANUAL
• Too much restriction in servo loop • Larger hoses and ttings
• No sharp bends
Pressure won’t go high
enough in MANUAL
• Pump starved or too small
• Too much agitation
• Throttle, range adjust or pressure relief valves
• Larger hoses
• Reduce agitation
• Adjust
Pressure, Speed and
Spray Rate don’t check
out according to charts
• Inaccurate pressure reading
• Dirty or worn tips
• Use a dierent gauge and check
each boom.
• Clean or place
Pressure always goes
too high in AUTO
• Minimum ow rate too high
• Inline/Bypass setting
• Re-calibrate
• Set appropriately
Pressure uctuates
greatly in AUTO
• Sagging or kinked hoses
• Throttle valve too far closed
• Pump starved or too small
• Valve response speed set too high (“Special” Cal)
• Support or replace hoses
• Adjust throttle and range valves
• Larger hoses
• Larger pump
• Clean strainer
• Reduce valve speed setting
* Make sure the sprayer’s flow return adjusting valves are
set properly. See your sprayer’s operating manual for
details, or see Appendix C for basic instructions.
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