41
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 fittings
•
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 different gauge and check
•
each boom.
Clean or place
•
Pressure always goes
too high in AUTO
Minimum flow rate too high
•
Inline/Bypass setting
•
Re-calibrate
•
Set appropriately
•
Pressure fluctuates
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
•
Troubleshooting
(cont)
Plumbing Troubleshooting Chart
