14
WARNING
To prevent premature failure of spray pump,
DO NOT
leave water in the sprayer tank or pump when there is a
risk of frost.
o
Remove filters and check. Reassemble filters.
o
Clean sprayer thoroughly and carefully. Apply CRC to all electrical connections.
o
Check pump for leaks and poor performance. If pump requires service have it done immediately. Any
delay may result in very costly repairs.
o
Unscrew regulator pressure adjustment stem 5 to 10 turns.
o
Remove all Booms and inspect check-valve diaphragms. Reassemble check-valve with collar
– loosely
attached.
o
Oil boom hinges on Agriboom, Superline and GoldLine booms, and grease indexing plates.
o
Check hosing and wiring for kinks, cuts and chafing.
TROUBLE SHOOTING
PTO Driven Spray Units Pump Trouble Shooting
-
If pressure has to be regularly adjusted, check for air leaks in suction line
s (Filters without “o-ring etc).
DON’T FORGET TO ADJUST PRESSURE DOWN WHEN NEXT FILLING OR PUMP WILL BE
DAMAGED.
-
Pump does not Prime
– Check that the suction hose packing is in good condition, that there is no air
leaks in the suction hose and that the suction filter is not clogged.
-
Irregular running of the pump
– Clean valves of foreign particles and if necessary replace worn or
damaged valves.
-
Pump runs but lacks pressure
– This depends on the regulating valve sealing or from the obstruction of
the delivery valve by foreign particles or wear. Replace the regulating valve and clean and if necessary
replace the delivery valve.
-
Irregular delivery of water
– (vibration of delivery pipe and pressure gauge) – check the seal on the
suction hose and that the pressure of the air in the accumulator reaches the advised figure.
-
Pump level leaks oil - Oil level too high. The leakage of oil mixed with water (whitish or thick) means the
breakage of a diaphragm. In this case, stop the pump immediately, empty and drain it completely, wash
inside with diesel oil to prevent oxidation of internal parts and replace diaphragm. After this operation it is
necessary to expel the air bubbles formed between the piston and the diaphragm.
Pump Features Imovilli M50
Points to note:
Accumulator Diaphragm
-
Under the Red Dome
-
Pressure = 40% operating pressure
-
Evens out pulsing of pump outlet
End Diaphragms
-
Bolts MUST BE KEPT TIGHT to prevent cracking of the housing. If they keep coming loose, check PTO
shaft balance.
-
Diaphragm is fitted edge in and writing out. Cylinder heads must be tight.
-
If fluid is outside the diaphragm the damage is probably a mechanical problem e.g. PTO speed too low or
failed or worn pistons rings (located under sleeve under end plate diaphragm).
-
Hydraulic diaphragm pump
– There is no contact between piston and diaphragm because cavity fills with
oil.
Cylinder Head (End Plate)
-
Suction diaphragm reduces “hammering” in pump.
-
Pump contains four valves (two each side)
-
Valves on PTO side are inlet (cap uppermost)
-
Valves on pressure side are outlet (spring uppermost)
-
Valve housings have “O”-rings
-
Check for wear on stainless steel surfaces
-
Check for wear on springs
-
If either worn, replace valve assembly
