39
Plumbing Troubleshooting Chart
SYMPTOM POSSIBLE CAUSE POSSIBLE SOLUTION
Loses pressure in MAN Pump Airlock Clean strainer
Larger hoses
Little or no pressure Too much restriction Larger hoses and fittings
a
djustment in MAN in servo loop
No sharp bends
Pressure won’t go high Pump starved or too small Larger hoses
enough in MAN
Too much agitation Reduce agitation
Throttle, range adjust Adjust
or pressure relief valves
Pressure, speed and spray Inaccurate pressure reading Use a different gauge
rate don’t check out and check each boom
according to tip charts
Dirty or worn tips Clean or replace
Pressure always goes Minimum flow rate too high Recalibrate
too high in AUTO Online/bypass setting Set appropriately
Pressure fluctuates Sagging or kinked hoses Support or replace hoses
greatly in AUTO
Throttle valve too far closed Adjust throttle
and range valves
Pump starved or too small Larger hoses
Larger pump
Clean strainer
Valve response speed set too high Reduce valve speed setting
(Special Cal)
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