Goldacres Prairie Compact 2000L MY19 Operator's Manual page 56

Spray Pump
PROBLEM
Pressure and flow
rate are too high
The pressure on
my gauge is higher
than the nozzle flow
indicates
The flow rate is
correct but my
pressure is too low
or high.
Pressure fluctuation
Pump pressure
pulsating
Pump oil is becoming
milky
Pump is noisy
Pump housing or
mounting cracked.
Damaged universal
joint
PTO shaft bent or
vibrating excessively
50 - Chapter 11 - Troubleshooting
COMMON CAUSES
Bypass line is restricted or
blocked..
Blocked filters of nozzles
Flow loss due to resistance
in lines, valves and filters.
Nozzles
Air leak on suction side of
pump
Incorrect pump speed
Faulty pump valves
Air accumulator pressure is
incorrect (if fitted)
Air accumulator diaphragm
has a leak (if fitted)
Incorrect pump speed
Air leak on suction side of
pump
Cracked diaphragm
Low oil level
Damaged pump valves
Pump suction line has air
leak or is restricted
Extremely cold weather can
cause liquid in the pump to
freeze
The shaft is too long
PTO shaft is inadequately
lubricated
PTO shaft is too short
COMMON SOLUTION
Verify console calibration settings.
Check for restriction in bypass line.
Check pump speed is not too fast.
Check if Bypass valve is turned on
Check and clean all pressure and nozzle filters
Re-calibrate console to allow for pressure loss
Check nozzle chart for correct nozzle size.
Check suction pump for air leaks.
Adjust pump speed so it is between 400 - 540 rpm
Replace pump valves
Reset the pressure in air accumulator
Replace air accumulator diaphragm
Adjust pump speed so it is between 400 - 540 rpm
Check pump suction for air leaks
Replace all diaphragms
Refill or replace oil
Replace pump valves
Clean suction filter and check for leaks in suction
lines
Check for ice in the pump and let defrost if required
Shorten shaft
Lubricate PTO shaft and uni joints
Replace PTO shaft
Prairie Compact 2000L Operator's Manual MY19 - REV 1