Corkill Systems Ltd.
5 Tasman St, PO Box 16,Opunake 4616,
Taranaki, New Zealand.
Ph 06 761 7531. Fax 06 761 7336
Freephone 0800 10 7006 NZ ISDN CODE (0064)
email; info@corkillsystems.co.nz






CSL Summer 2011
Christmas here again !
Another year has sneaked by so quickly! Keep the fingers crossed that the good payout and good weather will continue to go hand in hand this year! Never happened before apparently but then there is always a first!
Since we cannot control the weather, the payout, nor the banks, as always the way forward for farmers is to be astute in improving efficiencies and reducing costs on the farm. Reducing milk solids damage and SCC plus saving power are big steps in this direction and we are always pleased to help in these areas!!
Field Days
We will be at the following 2012 Field Days;
Southern Field Days, 15th- 17th February, Waimumu, site 585
Northland Field Days, 1st-3rd March, Dargaville, moved to site 247B
Central Districts Field Days, 15th-17th March, Fielding, site #S1
National Fieldays at Mystery Creek, Hamilton 13 -16th June, site #G119,
Mark your calendar - we would be happy to see you at one of them !
We will also be at the UK Dairy Event at Birmingham NEC in conjunction with our UK agent Richard Capper, of Capper Dairy Services, again in September.
CSL Lobe pumps
We made the first batch of our new low pressure high volume lobe pumps in 2009, while they didn’t look as pretty as European lobe pumps, they are running well. Since then we have made continuous improvements and the latest ones look and perform really well. We struggle to keep up with demand, the current batch is a month late arriving and already half of this new batch are sold. We have the pumps made in China and finish them here so there is a bit of delay between the pumps arriving and going out to the farm.
We now also have a larger pump that will handle a single receiver 60 or 80 rotary without needing a boost pump for washing. Lobe pumps have the advantage of positive displacement and minimal maintenance - Tungsten Carbide seals and no rubber impellers! Unlike the old two speed on/off controlled pumps, it is unlikely that they will sustain damage by hard bits getting in them - the Milkflow Variable Speed Drive acts as a safety clutch.
We have designed a special Milkflow program for these pumps, it is a sensor-less pressure control program that maintains a preset and user adjustable head pressure while pumping. This is a unique program to CSL and only available in our new model Milkflow controllers. This improves pumping to high head vats plus prevents damage from over pressure to restricted coolers and fine filter socks. These situations have always been troublesome for both centrifugal and flexible impeller pumps.
We had a recent case where the centrifugal milk pump was replaced by our lobe pump in a 60 rotary, the milk test before and after installation was measured independently and improved by 7.1%. Considering this farmer does about a million milk solids, this is a pretty good return on investment! I reckon he paid for the pump and installation in about a week!
Varivacs
No changes here - why change something that works so well?
Due to the reliability we have now extended the controller warranty to five years
Farmers are now able to bill their Varivac through RD1 with payment terms to suit.
CSL are still the only Vacuum Pump Controller supplier offering a money back guarantee if the farmer does not get the results we advertise - subject to some conditions of course.
Code of Practice for VSD’s
The long awaited Code of Practice for the Supply, Installation and Operation of Power Drive Systems (Variable Speed Drives) is still under development by the Ministry of Economic Development. It went out for public comment several months ago is now due in early 2012.
There is a specific section for Dairy sheds which hopefully will make the requirements clear for those suppliers more interested in profit than the interests of farmers and cow health.
Stray Voltage issues
I saw a report submitted recently by a complainant to the Commerce Commission alleging that CSL were making false claims in stating that cows were harmed by stray voltage, not to mention a few other false and uninformed claims.
The report they based their complaint on was commissioned by a Power Company in Canada to fight a suit brought by a farmer regarding stray voltage damage to cows - in essence it concluded that cows would become accustomed to stray voltage and suffer no consequences! As the Power Company was paying for the report, it was obvious that this report was only ever going to be in that Power Company’s favour.
Needless to say the science and huge amount of evidence proving the reverse is common knowledge for any intelligent person dealing with cows and far outweighs this lonely and inaccurate report. It is sad that some still have their heads in the sand despite the evidence.
The Commerce Commission found that the complaint had no grounds.
The “stray voltage” issues around VSD’s are quite different to those in the Canadian report. Danfoss NZ has held approximately twenty-five free “good VSD installation practice” seminars around the country recently. These would have been enlightening for many installers. If you missed the seminar in your area and want to know more either give me a call or contact Danfoss NZ directly for a copy of the presentation. Be warned, Ross Remnant’s attempt at jokes were not very good!
Any questions on any of the above, give us a call, as always we are here to help. The 24 hour call system will be operating all through the festive time, we will be open on the normal business days to send out bits as required.
Seasons greetings and best regards, we hope 2012 is happy and prosperous for you
Steve Corkill and the team at CSL
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