Page 15
Trouble Shooting
Pump does not prime
x
No liquid in tank or not covering suction inlet .
x
Suction
filter
blocked.
x
Suction filter stop valve closed.
x
Suction filter bowl loose or missing O-ring.
x
Suction line loose allowing pump to suck air.
x
Bypass control not in by-pass position.
x
Pump valve springs broken or valves worn.
Pump does not reach correct pressure
x
Pump not operating at full 540 rpm.
x
Suction
filter
blocked.
x
Suction filter stop valve partly closed
x
Pressure regulator not correctly adjusted
x
Pressure regulator valve and seats worn.
x
Pressure gauge faulty
x
Pump diaphragms ruptured (pump oil grey).
x
Worn nozzles or capacity of nozzles greater
than capacity of the pump.
Fan noisy and/or vibrating
x
Gearbox
bearings
worn.
x
Fan damaged or out of balance.
x
PTO incorrectly installed.
x
PTO geometry not correct.
Driveshaft noisy
x
PTO shaft not secured properly to shafts.
x
Universal
joint
crosses
worn.
x
PTO geometry not correct.
Airblast reduced
x
Fan mesh blocked with leaves or debris.
x
Not operating at full speed of 540 rpm.
x
Fan gearbox not in gear.
Poor tank agitation
x
Chemical left in tank whilst not operating.
x
Chemical insufficiently mixed before filling.
Pump and hoses vibrating.
x
Pump surge chamber pressure incorrectly
adjusted or surge diaphragm ruptured.
x
Air entering the suction line through loose or
damaged fittings.
x
Pump valves or valve springs worn or
damaged.
x
Worn nozzles or nozzles to big for the
capacity of the pump.
x
Air trapped in filter or suction lines.
