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HARDI
MEGA 230 / 350 CENTRIFUGAL OPERATORS MANUAL
11.1 General Spray Systems (cont'd)
Problem
Cause
4. Pressure dropping.
5. Liquid leaking from pump.
6. Electric control not
functioning.
7. Less spray out of one boom
section than others.
8. Poor agitation.
9. Excessive vibrations in hoses.
A. Output from By-pass Lines
causing a disturbance around
suction tube inside tank.
B. Suction filter plugging.
C. Bad seat on spool valve for boom
section control.
D. Suction Manifold valve or
suction side air leak.
E. Nozzles worn.
A. Damaged pump seal.
A. Fuse blown.
B. Motor bad or micro-switch plate
loose.
C. Bad seat on spool valve.
D. Bad switch or plug on control box.
E. Print board at back of control
corroded or damaged.
F. Check polarity (Brown: Positive)
(Blue: Negative)
A. Bad seat on spool valve for Boom
Section Control.
A. Agitation valve not open.
B. Agitation nozzle plugged.
C. Agitation nozzle missing.
A. Bottom of suction tube plugged.
B. PTO shaft slipping on pump crank
shaft.
C. Bad Suction Mainfold valve or
suction side air leak.
D. Valves on Pressure Manifold not
in correct position.