OPERATORS MANUAL & FITTING INSTRUCTIONS FOR THE LH 765 GRAIN LOSS MONITOR LH No. 020-765-UK Version 2.00 LH Technologies Denmark ApS Mølhavevej 2 9440 Aabybro Denmark Tel. +45 9696 2500 Fax. +45 9696 2501 Internet: http://www.lh-agro.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION We have endeavoured to deliver a fault free product. To ensure optimal use of the equipment we ask that great attention be paid when reading the manual. We are more than happy to help should any queries arise, both when the product is used for the first time and at any later date. Regarding responsibility for use of the product we refer to our sales and delivery terms especially paragraph 7, which follows: 7. Product usage. 7.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION Contents THE LH 765 SYSTEM .........................................................................................................4 GENERAL OVERVIEW ...............................................................................................4 OPERATING........................................................................................................................5 DISPLAY INDICATIONS .............................................
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION THE LH 765 SYSTEM GENERAL OVERVIEW Pos: LH-part no.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION OPERATING DISPLAY INDICATIONS Both needles in white field at the same time. No loss. Loss over the sieves. Too much air or blocking. Too little air under the sieves. You can speed up. (Higher capacity) Both needles in red field at the same time. Loss over the straw walkers. Too much loss. Slow down. Straw walkers overloaded. Slow down. LH AGRO No or intermittent loss over the sieves.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION CALCULATION OF GRAIN LOSS The figures in the following table state the number of seeds per running metre of straw behind the combine harvester when the loss is 1% in a field where the yield is 400 kg/ha.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION RULE OF THUMB From the above table it can be concluded that per 1 cm width of cut there may be 1 seed per driven metre. As the loss usually lays in a 1 metre wide track behind the harvester the lost seeds cover app. 1 m2. A normal hand is about 1/100 m2. Acceptable loss therefore will be 1/100 of the loss stated in the table. Example: A combine harvester of 17’ is used in a barley field yielding as stated above.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION SETTING UP THE GRAIN LOSS MONITOR Before putting the monitor into use, it is very important to realise, that not even the best grain loss monitor can prevent grain from being lost. The purpose of the monitor is to inform the operator about the amount of grain being lost. Therefore the monitor must be adjusted as follows: 1. Adjust the combine harvester as usual to an acceptable loss (without using the grain loss monitor).
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION FITTING INSTRUCTIONS FOR LH 765 NOTE! See description of the system page 4 FITTING AF MONITOR BOX Normally the grain loss monitor (the instrument box) is to place in the right corner of the driver’s cab. This is the most practical place when the operator is to read the display. 1. When the mounting place is located this should be marked. The holes for the fixing and for the cables are drilled. 2.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION FITTING THE WALKER PADS The two walker pads must be fitted at the rear of the two outside straw walkers. Stick the supplied adhesive template on the underside of the walkers with the arrow pointing to the rear of the walkers and drill the holes as shown on the template. NOTE! Remember to take any reinforcements and walker extensions into consideration when positioning the walker pads.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION LEADING THE CABLES FROM THE WALKER PADS There must be a loop in the cable between the walker and the machine side as shown on the following diagram. This loop must be large enough to "capture" the circular movement of the straw walkers, without affecting the cable too much (pull/push) when fixing the cable: Do as follows to determine a suitable loop size: 1. Attach the cable on the underside of the walker approx.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION 2. Turn the walker to the lowest position and make a mark (A) on the side of the machine at a right angle to the fitted cable fastener. Turn the walker to the highest position and make a mark (B) on the side of the machine. The length of cable needed to make the "loop" is determined by measuring the distance (L) between the two marks (A & B) and multiplying this by 3.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION FITTING THE SIEVE SENSOR POSITION The sieve sensor must be fitted so that it can measure the grain loss behind the sieves over the whole width of the sieves. The best position for normal grain types is 120 mm behind the rear edge of the sieves and 50 mm under the sieves (measured from the centre of the tube). 50 mm 120 mm The supplied brackets have three slits, when fitting measure from the middle slit.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION SHORTENING THE SENSOR The steel tube can be shortened to the length between the two brackets thus: a. Remove the rubber bung (opposite the plug) by loosening all nuts. Remove the plastic spacer in the tube by loosening the allen screw. b. Measure the distance (x) between the brackets exactly; reduce this length by 22 mm. This measurement (L) should be measured from in between the two washers as shown below. Cut the tube with a hacksaw.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION LEADING THE CABLE FROM THE SIEVE SENSOR Connect the plug to the sensor and fit the cable fasten to the bracket as shown below. This fastener is important for the life of the cable. Make a bend in the cable that is large enough to "capture" the movement of the sieves. Fit another cable fastener on the side of the machine. Lead the cable hereafter to the junction box.
LH 765 GRAIN LOSS MONITOR – OPERATORS MANUAL & FITTING INSTRUCTION NOTES 16 LH AGRO
