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Text of the page (random words):
with the promise of a warm and still day i arrive when it s still dark in my winter pants and a warm pullover but i stripped to my day outfit once i had completed the pre check of my pellenc 8590 the shaker arms and axles mounts seemed in good condition and their was no missing or misaligned collector plates nightshift mckean estates waipara the harvester had been washed well after the previous shift and the various grease nipples showed evidence of at least having received some grease as i climbed up onto the top of the picking head i inspected each area and closed the access hatches which had been left open everything was clear the main belts looked central and the mirrors were clean i climb down off the harvester and checked my watch i d been here for 1 2 an hour already but then i had walked around and checked the rest of the harvester it was time to go i climb up into the cab folded away the ladder turned on the headlights and rotating beacon raised the rev s to about 2000 and crept out of our base onto the highway i raise the revs to the maximum and i am on my way to your place that coffee i receive once i arrive at the vineyard has just been spooned into the mug and the jug filled and turned on i can smell it already cab view broomfield i arrive at the vineyard 5 minutes late no one was there waiting for me but i knew where to go and as i line myself up to the first row i switch on the stepping function raising the machine at the same time then come up to my start point dropping down on the stepped stop height dropping the rev s to idle i check no one is standing outside then open out the ladder and hope out firstly i check the vine i check the height of the fruiting zone against that of shaker arms in the machine and then i check the pinch over the fruiting zone area a final walk around the harvester to confirm everything is in position before i introduce myself to my client who has just arrived the discussion is simple after pleasantries are done with when we discuss what i can and can t do but specifically the difficulties regarding removing fruit around posts and the risks in doing so without getting too heavy in the discussion i promise to perform a few rows stop in row and get out and discuss progress mcarthur ridge central otago i start off at 3 5km hr on fairly mild settings for about 3 bays and stop and get out we note the smaller berries not being picked but some canes being broken and too much berries still remain on the rachis on the ground there s no evidence on the posts that the bottom fans are too high i climb back into the cab lower the amplitude from 95 to 90 increase the frequency from 490 to 500 but add acceleration to 15 i increase the mini shakers from 750 to 850 and then quickly undertake another 3 bays but this time at 4km hr most clients would recognise the improvement and i would counter that after a couple of rows the harvester will warm and will come to the task after finishing the return row i turn and stop and seek the clients opinion again the client wants a little more off around the posts but makes the point he doesn t want to break any and is generally happy the rest of the process helen joey estate yarra with the easy part done i then start to focus on post parameters i start with ensuring the amplitude is at least 5 to 10 lower the simple reality is that with a post jammed up the middle of the shaker arms their effectiveness is somewhat compromised i increase the frequency up to 20 to 25 higher but then i match the increase in pinch around the post with the setting around the canopy if i can get this right then theoretically the post sensor switches to the post parameters by increasing to the correct width of the post reducing the actual shaking movement and whilst it has no acceleration ever it quickly increases the frequency to try and wrap around the back of the post because the frequency is higher around the post then i ensure the post parameters are active for slightly longer than their length 110 usually to ensure fruit is quickly picked directly after the post in that dead area where the shaker arms can t operate because of the restriction conversely if the amplitude is quite low the picking length is usually 90 to 100 mcarthur ridge central otago by this stage the client is happy and i have completed 4 rows after emptying it is now just mileage and i get into rhythm quickly the next 4 rows happen in the blink of the eye but now i m constantly checking the row beside me and how well the harvester is picking i m frequently checking the rear mirror looking for rachis that may be broken or any fruit remaining on it the harvester is warming and the picking head is developing the sweet spot so now i m pushing the speed first up to 4 5km hr and if the result looks alright then up to 5 0 and maybe 5 5km hr but not without a minute increase to frequency emptying straight into fermenting bin sooner or later the truck is full and after completing another 4 rows it has not returned in time for me to empty this gives me a good chance to give the machine a rest and i lower the rev s to idle and get out and survey the harvester once i am happy with everything there then i check where i ve been looking for what fruit i ve missed and what is happening around the post i remind myself that as the day gets warmer i am able to travel a little faster and sometimes can reduce the frequency and amplitude this is the first thing i forget to reinstate at the end of the day when temperatures get cooler that truck is taking it s time i want to finish and get going to the next job besides even at this time of the year my wife still has organised friends coming around for dinner and i don t want to miss out leave a comment filed under farming tagged as pellenc blackcurrants grapes harvest wine may 12 2013 4 21 pm the finishing department the finishing department covers the area from the discharge of the main drag belt at the top through the top fans the leaf sorting belt the mini shakers down the discharge chute and the tables the destemmer above courtesy http www pellenc com all of these processes have related functions not the least being the bottom fans drag belt speed and ground speed i have discussed the top fans before essentially they operate at a very delicate moment that is when the fruit and juice is transferred to the leaf sorting belt as it is being catapulted off the belt and free falls onto the leaf sorting belt as it travels over this gap between these two processes the top fan pressure determines exactly how much of the mog is removed including also how much juice and grape berry is removed if this setting is not 80 90 of the top fans or is simply just too high the discharge duct from the fans will be awash with juice and mog and will be making a considerable mess once the matter is on the leaf sorting belt in conveyor technology terms it is just a transfer belt individual berries and juice drops through this belt onto the discharge tray which drops it all through the rollers and into the bin bunches are transferred through a second set of shakers much smaller and much faster where the berries and juice drops through while remaining mog runs off the end of the belt onto the discharge tray all fruit juice and mog land on the tables rollers and drops through into the collection bins where hopefully all mog and petioles are run off the side of the sorting tables and drop onto the ground fruit mog process courtesy http www pellenc com if you ever get a chance get up on top of the harvester whilst it is working and open the top hatch where the fruit is thrown off the drag belt and onto the leaf sorting belt it comes off at such a speed that fruit can fly out above the hatch onto the top of the top fan casing the drag belt is going through a 180 degree turn it isn t any wonder the driver can lose a lot of fruit at the bottom fans area where the drag belt goes through a similar movement at this point the fruit juice and mog is mid air and with the covers closed the fan can lift out more than just leaf but juice as well a dead giveaway for this is taking note of the amount of juice discharging from the exhaust ducts at the back if they are excessively wet and running with juice you know the fans are too high fruit and juice then falls through the leaf sorting belt runs down the discharge chute onto the sorting tables mini shaker unit leaf sorting belt courtesy http www pellenc com fruit bunches and mog is unable to fall through the leaf sorting belt and so travels along the belt through a mini shaker this is a similar but much smaller shaker unit to the main shakers but one the operates at twice the rate anywhere from 750c min to 1200c min these shakers or destemmers sit very close to the top of the leaf sorting belt and are much closer together so any bunches that are still present and shaken violently and the juice and fruit is removed and drops through mini shakers courtesy http www pellenc com the mini shaker frequency is determined by none other than watching the rear of the discharge tray for any fruit still attached to the rachis some call it the wrack the correct setting will result in a pile of empty rachis crossing the sorting table which is dumped on the ground easily found when the harvester has stopped as the driver conducts his visual check of the vine in the first row if the rachis is broken then it is generally viewed that the setting is too high exact guidelines are 1 2 rachis with 3 4 berries remaining per bay vine panel is a good setting the sorting tables sit above the collection bins and are shaped appropriately to perform two roles the first set of rollers the fruit and mog comes in contact with allows for the passing of juice but their main role is to re align mog and trash such as petioles perpendicular to themselves once this is done they tend to run off the side of the second set of rollers whereas the fruit drops through and into the collection bins generally speaking the tables are run at the maximum speed possible backed off slightly to ensure fruit is covering the rollers evenly but 1 or 2 rollers back from the outside edge whether the mini shakers cycle setting is set high enough or not is determined by how much fruit is still on the rachis when they drop off the side the best time to note this is when the machine has stopped whilst in it s first setup row or when it slows down once coming out of the row to turn around additionally what you also do not want to see is wads of leaf and juice running off the side as well this is the telltale sign of the fans set too low and the mini shakers pack leaf and juice together in a pancake one can also take a ride on the harvester to view the discharge tray and note the quantity of trash collecting and running across the rollers remember ground speed is practically related to everything that could be wrong the leaf sorting belt speed is proportional to the main drag belt speed which is determined by ground speed if you think something is wrong first thing is to slow down which makes the whole process more manageable other features include a magnetised discharge tray the winemaker should demand this is present as this removes all metal manner from entering the bins nails staples and so on a bin level indicator is available on some models and as an add on this too should be demanded by the vineyard owner to ensure driver forgetfulness does not allow fruit or juice to overflow the bin 1 comment filed under farming tagged as pellenc blackcurrants grapes harvest wine april 22 2013 4 23 pm the smart controller more on parameters there are a couple of other parameters that i haven t mentioned previously that being proportional shaking which doesn t need any further explanation and the active distance active distance is the zone for which the post shaking parameters take effect in other words if this is set to 50 then the post parameters will only be active over half of the shaking zone the length of the shaking bars set at 150 and this activates them for one and a half times the zone essentially if your post parameters are higher acceleration and frequency then the active distance should be greater than 100 if they are lower then the active distance should be equal to or less than 100 the argument i make here also refers to the post parameter discussion in the last post is that if the choice is to make every effort to remove fruit around the post then maintaining those higher settings just after the post will ensure a better harvest in that dead zone if this is not the goal ie post protection is paramount then it doesn t matter and the setting can be 100 or lower the smart system parameters can vary much between crops whilst late season amplitude settings of 65 80 can allow frequencies up to 540 cycles min being late season would not need frequencies this high i have harvested 5 hectares of pinot noir of which 3 hectares were stressed vines this allowed parameter settings of 25 80 00 485 pinch amplitude acceleration frequency at a speed between 5 0km hr and 5 7km hr the suggestion that i could lower the settings further due to being able to stretch the speed to 5 7km hr is negated by the fact that these were 50 75 metre rows with only 6 metre headlands at the same time the remaining 2 hectares were quite dissimilar with a very active canopy consequently the parameters required were 25 95 10 510 at 4 8km hr with some of the small berries and raisins still remaining speed is very relevant once after taking over the machine from a dry hire job i felt the picking arms being a little more loose by an increase in the shaking effect which you can feel in the small of your back i look to my right to find the smart parameters are 15 105 15 540 what speed this was being undertaken at i do not know but this highlights the actions of a rather ignorant driver he was obviously thinking that as all the fruit was being removed he therefore was doing the right thing it just so happens to be someone who did not turn up for driver training arranged prior to the season with a little adjustment i managed to lower the amplitude from 105 to 95 and lower the frequency from 540 to 495 and completely cut out acceleration altogether even though i was doing 5 5kph the season of 2012 2013 we have instigated a policy for ourselves of reducing the post amplitude by 15 20 no matter what the thinking having a post momentarily between the picking arms physically reduces the amplitude trying to maintain or increase the amplitude achieves little we are experiencing no significant harmful effect other than a little more fruit remaining around the post this is countered by keeping our speed to a maximum of 5 0 5 7km hr most vineyard operators agree that to hand pick around the posts doesn t net much advantage so this doesn t seem like too much of an issue the short period we ran with an increased amplitude of 95 100 around posts gained little in extra fruit...
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