TABLE 7 TABLE OF PROGRAMMED MAINTENANCE
OPERATION | 8 h | 50 h | 300 h | END |
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| OF SEASON |
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Check the level and state of the oil | 0 |
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Check the accumulator pressure |
| 0 |
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Check the suction (hoses, pipes, unions) |
| 0 |
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Check and clean the suction | 0 |
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and delivery filters |
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Check the pump fixing feet |
| 0 |
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and screws in general |
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Check the diaphragm and the oil |
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| X (1) | X (2) |
and change if necessary |
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Check the suction/delivery valves |
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| X | X |
Check the pump screws and bolts are tight |
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| X |
Check and clean the nozzles and the | 0 |
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Check the wear of the nozzles |
|
| 0 |
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Check the hydraulic oil level |
| 0 |
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Check any failures or cracking of the welds, |
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| 0 |
especially on herbicide booms |
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|
Grease the articulated joints and the wheel hubs |
| 0 |
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Check the tyre pressure |
| 0 |
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NOTE: 0 Operation to be carried out by the operator |
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X Operation to be carried out by a specialised technician or in an authorised workshop
(1) First oil change
(2) Change at the same time a changing the diaphragm
TABLE 8 PROBLEMS, CAUSES AND SOLUTIONS
PROBLEMS | CAUSES | SOLUTIONS |
The pump won’t charge | Air suction | Check the suction system |
| Adjustment valve closed | Position the lever correctly |
| (Command group isn’t at |
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| zero pressure) |
|
| Valves and/or valve seats | Replace or clean ( * ) |
| suction and delivery worn |
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| or dirty |
|
The pump doesn’t reach the set | Valve and/or valve seat | Replace ( * ) |
pressure | adjustment worn |
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| Valves and/or valve seats suction | Replace or clean ( * ) |
| and delivery worn or dirty |
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| Insufficient rpm | Bring speed up to correct rpm |
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| always in the field of 350 ÷ 550 rpm. |
| The nozzles used are worn or have | Replace |
| holes that are too big |
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| Suction blocked | Clean the cartridge of the |
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| filter or remove the blockage |
Irregular pressure (with impulses) | Valves and/or valve seats | Replace or clean ( * ) |
| suction and delivery worn |
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| or dirty |
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| Air suction | Check the suction system |
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|
|
Excessive vibrations at delivery | Pressure accumulator discharged | Bring the air pressure back up to the right |
| or incorrect air pressure | value (see pump handbook) ( * ) |
Noisiness and the level of the oil | Blocked suction | Check the suction system |
has dropped |
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|
Water in the oil | Breakage of one or more diaphragms | Replace ( * ) If the replacement isn’t |
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| done immediately, drain the water out |
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| of the pump and introduce clean oil |
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| without water (also used) or diesel to |
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| stop rust attacking the internalparts |
No liquid comes out of the nozzles | Delivery filter dirty | Clean |
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| |
| Nozzles blocked |
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NOTE: ( * ) Only specialised technician |
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30unigreen
