Irriland SPORT Series, Instructions Manual

Page: 13 / 16

Page 13
MACHINE STORAGE AT THE END OF THE IRRIGATION SEASON
1) If the winter temperature will drop below freezing in the place the machine will be stored, it ’ s
better to partially empty the pe hose. To do this you should pull out half of the polyethylene hose as
you do for a normal irrigation, then you take the sprinkler cart off and then you rewind the
polyethylene hose by means of the pto shaft (as described on page 12). You can also leave the hose
on the drum and use an air purge to blow out the water. Remove the sprinkler first.
3) For a longer lifetime of the machine is suggested to clean the machine with a light pressure washer
let it dry, and look for any areas that show oxidation or rust. Remove surface rust and spray with
“ cold galv ” spray paint.
4) Lubricate all the indicated points as you do for the normal maintenance.
5) Open and close the by pass valve and then leave half open to avoid damages along the winter.
6) Disconnect and drain the hoses of the brass valve and blue diaphragm valve (pict 07 and 08) and
turn the 90° elbow down for drainage.
PROBLEMS AND SOLUTIONS
1) The machines can ’ t rewind the polyethylene hose.
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Open and close completely the bypass by turning the bypass lever from completely closed to
completely open and vice versa.
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If the bypass valve works properly and the turbine impeller doesn ’ t turn is possible that the turbine
nozzle is blocked by a solid: dismount the inlet pipe, check and clean the nozzle.
Is also possible a long fiber as a rope or something similar went inside the turbine and has been
rewound all around the impeller: to check and clean it you should take the PTO shaft protection and
the turbine cover off.
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Also check the gearbox position: in case the drive pinion is too far or too much against the crown
gear of the drum, it will not move. To check it disengage the gear box, hold the pto shaft by hand
(mandatory with working gloves) and turn it backward and forward: if the gearbox position is ok you
should be able to move it a bit and hear a clear “ tac ” “ tac ”…. every time the pinion teeth match the
crown gear teeth. Between the pinion teeth and the crown gear teeth base you should have about 1
mm (0.04”) space.
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The gear box doesn ’ t work: if the turbine impeller turns (you hear the noise) but the drum doesn ’ t
move, is possible that the lever on top of the gear box isn ’ t well positioned and the gear box hasn ’ t
been engaged. Place the lever in working position, naturally after the sprinkler cart has been pulled
out at least 1 m / 3 feet. If the turbine impeller turns, the gear box is well engaged and the drum
doesn ’ t turn please call the local authorized service as maybe you have to change/repair the gear box.
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The sprinkler nozzle is partially stopped and only some water comes out. Dismantle the nozzle and
check.
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The filter (if ordered or mounted later on) at the machine inlet is full or at least dirty. Disconnect
the flexible supply hose following the instructions for the pressurized systems and clean the filter.
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The sprinkler is always supplied with some nozzles of different sizes. Is possible to change the
nozzle with a smaller and/or with a larger one. The turbine nozzle is generally similar to the sprinkler
nozzle. The sprinkler nozzle you use depends on the available flow and pressure. Try different
nozzles and for each nozzle note carefully the sprinkler nozzle diameter, the pressure at the machine
pressure gauge and the pull in speed you can reach. This way the service will have a complete and
clear picture about the situation and will be able to help you.
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The pressure isn ’ t enough at the turbine/machine inlet: first of all engage the gear box placing the
lever in working position. If the drum doesn ’ t turn try to increase the pressure or advise the local
authorized service and give all the data listed at the previous point.
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The polyethylene hose has been pulled out, the gear box is properly engaged and all the above
mentioned parts have been checked. The gear box may be damaged: call the local authorized service.