Hardi COMMANDER Plus 1200, Operator'S Manual

Page 1: ...COMMANDER 67020003 6 02 Operator s Manual ...

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Page 3: ...serves the right to make changes in design material or specification without notice thereof HARDI and other product names are registered trademarks of HARDI Inc in the U S and in other countries 67020003 6 02 Operator s Manual ...

Page 4: ...lves opt 26 Filling the tanks on the COMMANDER Plus 26 Filling main tank through tank lid 26 Filling flush tank optional through lid 26 Filling with external Quick Fill optional 27 Filling of clean water tank 27 Adjustment of ECP operating unit 28 Adjustment of constant pressure 28 Operating the control unit while spraying 28 Remote 4 pressure gauge 29 Self cleaning filters 29 Choice of correct re...

Page 5: ...using your equipment You will find many helpful hints as well as important safety and operation information Some of the features on your HARDI COMMANDER Plus sprayer were suggested by grow ers There is no substitute for on farm experience and we invite your comments and sugges tions Please address your correspondence to the Service Manager at one of these branches HARDI MIDWEST 1500 West 76th St D...

Page 6: ...fe of this quality product The COMMANDER Plus 750 and 1200 trailer sprayers consist of a powder coated frame with a tank diaphragm pump ECP control Electric Control Plus HARDI Manifold system Self Cleaning Filter Paralift Boom Lift System and 45 50 60 or 66 EAGLE series spray boom The 1200 trailer sprayers additionally offer 80 88 90 or 100 EAGLE series spray boom and 80 88 90 100 or 120 FORCE ser...

Page 7: ...LICATION ZONE Please note that some of the features are optional equipment Locker for protective gear Clean water tank Tap for hand washing Support leg Pump P T O shaft Tank level indicator MANIFOLD valves Couplers for Quick Fill Working platform with ladder Hydraulic and electric components Boom and Work lights HARDI FILLER Lockers for pesticide containers and equip ment PARALIFT boom lift system...

Page 8: ...rosion Tank The tanks made of impact proof and chemical resistant polyethylene have a purposeful design with rounded contours which allows for efficient cleaning and drain ing The tanks are designed with a large deep sump so that they can be completely emptied even when the sprayer is used on slopes up to 15 inclination A remote operated valve drain is fitted for efficient drain ing Pump The HARDI...

Page 9: ... the lifting points as shown on the illustration and make sure that the straps or belts used for lifting are suitable for the application Description Before putting the sprayer into operation Although the sprayer has been applied with a strong and protective surface treatment on steel parts bolts etc in the factories it is recommended to apply a film of anticorrosion oil e g CASTROL RUSTILLO or SH...

Page 10: ...fully and become familiar with the operation of the equipment before initial operation in each spraying season Failure to do so may result in possible over or under applica tion of spray solution which may drastically affect crop production and lead to personal injury 2 Before starting the engine on the tractor unit be sure all operating controls are in the off or neutral position including but no...

Page 11: ...es 4 Dedicate an area to fill flush calibrate and decon taminate sprayer where chemicals will not drift or run off to contaminate people animals vegetation water supply etc Locate this area where there is no chance of children coming in contact with this residue 5 Decontaminate equipment used in mixing transfer ring and applying chemicals after use Follow the instructions on the chemical label for...

Page 12: ...he two pins A and the P T O support bracket Invert the drawbar hitch and replace the two pins A and P T O support bracket Support jack The support jack is stored upside down in the bracket on the sprayer s right side when the sprayer is attached to the tractor To remove the support jack from the drawbar hitch Lift the leg remove the linch pin and pull out the support jack The support jack can then...

Page 13: ...ransport lock can be adjusted by turning the turnbuckle Transport lock Road position Sprayer setup A A When the hydraulic steering is needed again remove the front pin and snap ring swing the transport lock out to the field position and secure with pin and snap ring Transport lock Field position Hose package support To prevent hoses and wiring from being damaged by the tractor wheels all hoses cab...

Page 14: ...VE LOADING AND BINDING ON THE P T O SHAFT IT MAY BE ADVISABLE TO LEAVE THE P T O SHAFT DISCONNECTED UNTIL THE CLEVIS ADJUSTMENT IS COMPLETED THEN THE P T O SHAFT ADJUST MENTS CAN BE MADE Initial installation of the shaft is done as follows 1 Attach sprayer to tractor and set sprayer in the position with shortest distance between the tractor and sprayer pump P T O shafts 2 Stop engine and remove ig...

Page 15: ...ed IMPORTANT Place the jack under the axle and lift the wheel to remove any load from the axle clamps before tightening the axle clamp bolts to the specified torque 6 Tighten the clamp bolts to a torque of 207 Ft lb 280 Nm for CM 750 289 Ft lb 390 Nm for CM 1200 7 Repeat the procedure for the RH wheel 8 Make sure the distance from the center of the tire to the center of the tank frame is equal on ...

Page 16: ...le with 4 x 270 95R48 tire assemblies for 22 rows 72 90 coil spring suspended adjustable axle inserts with 2 x 320 90R46 tire assemblies 76 90 or 80 90 coil spring suspended adjustable axle inserts with 2 x 380 90R46 or 2 x 18 4R46 tire assemblies 120 coil spring suspended fixed axle system with 2 x 320 90R46 or 2 x 380 90R46 or 2 x 18 4R46 tire assemblies 88 132 coil spring suspended Dual Wheel a...

Page 17: ...e hydraulic system requires an oil capacity of approximately 0 8 GPM 3 liters and a minimum pressure of 1 950 PSI 130 bar BE SURE TO HOOK UP HYDRAULIC LINES PROPERLY ENSURE HYDRAULIC LINES HAVE NOT BEEN DAMAGED DURING SHIPPING ESCAPING HYDRAULIC FLUID UNDER PRESSURE CAN PENETRATE THE SKIN CAUSING SERIOUS INJURY AVOID THIS HAZARD BY RELIEVING PRESSURE BEFORE DISCONNECTING HYDRAU LIC LINES ENSURE AL...

Page 18: ...ractor cabin 4 Connect the female 7 pin plug C from the switch box to the 7 pin male plug D from the sprayer Control boxes and power supply The control boxes for the ECP operating unit are fitted in the tractor cabin in a convenient place Self tapping screws can be used for mounting Power requirement is 12V DC Note polarity BROWN wire Positive BLUE wire Negative The wires must have a cross section...

Page 19: ...ion of adjusting the transport brackets themselves 1 and adjusting the transport locks 2 Always choose a transport height as low as possible 2 Transport lock To change position 1 Lift and unfold inner sections till lock is disengaged 2 Loosen and remove the two bolts which keep the parts A and B assembled 3 Reassemble A and B according to desired hole combination Note Always use both bolts to asse...

Page 20: ...to transport position With the fold cylinder pressurized determine if the boom wings need to be adjusted inwards or outwards 3 Relieve the pressure from the fold cylinder by unfold ing the boom a few inches If the boom rests too far in on the transport brackets loosen the nut B and adjust collar A in towards the cylinder housing If the boom rests too far out on the transport brackets the collar A ...

Page 21: ...ng is essential to obtain good stability 7 Keep stabilizer chains on the tractor s liftarms tight 8 For safety reasons the following limitations are set for sprayers equipped with steering drawbar with unfolded booms Sprayer setup MAX 8º MIN 72 Speed while turning max 2 5 m p h 4 km h Ground inclination while turning max 8 Wheel width min 72 with steering drawbar Make sure the following safety dec...

Page 22: ... support leg is stored in the storage bracket on the right side of the trailer when the sprayer is attached to the tractor To remove the support leg Lift the leg remove the pin and pull out the support leg WARNING To prevent the sprayer from tipping over do not disconnect the sprayer from the tractor with the booms unfolded unless the boom is supported Remember to disconnect all hoses and cables f...

Page 23: ... switches A and B and move the joystick forward or rearward to activate oil flow Switch positions of the hoses in the double acting remote outlet if you do not like the direction required to activate the boom 3 One side folding is achieved by following the above procedure except that only one of the switches is depressed See Folding one side only below B D H Hydraulic control box optional Switch A...

Page 24: ...ttom profile of the wing to come in contact with the vertical part of the front transport bracket 5 Lower boom down activating the Paralift lift cylinders Make sure that the transport hooks are engaged on the cylinders Then lower the tilt cylin ders switch C and D until the wings are resting on the front transport supports 6 Relieve all oil out of the system by activating the tractor levers withou...

Page 25: ...t any switches pushed Tilting the HZ FORCE boom WARNING Never attempt to work on or around boom when tilted up A Hydraulic joystick controls 1 Activate switch C and move hydraulic handle forward or rearward to tilt left hand boom up To tilt the right hand boom activate switch D Switch positions of the hoses in the double acting outlet if you do not like the direction required to activate the boom ...

Page 26: ...rious functions of your sprayer system 1 Suction filter 2 Suction manifold 3 Pump 4 Pressure manifold 5 Sparge tube agitation 6 Safety valve 7 HARDI MATIC 8 Self cleaning filter valve return 9 Self cleaning filter 10 Check valve 11 Boom section valves 12 Pressure agitation return with restrictor 13 Boom 14 Boom pressure gauge 15 Flush tank 16 HARDI chemical inductor 17 Tank rinse nozzles 18 Pressu...

Page 27: ...rning the handle towards the desired function Symbols shown below are fitted to the faces of the 3 way valves indicating the direction of flow of the liquid Agitation Normally Agitation should be on but please refer to the following rules of thumb 1 Choose Without Agitation if a high level of foaming occurs in order to reduce the amount of foam 2 Choose Agitation when using powder chemicals in ord...

Page 28: ...rated smoothly by one hand Electrical operated MANIFOLD valves optional One or more MANIFOLD valve s can be electrically operated via a control box in the tractor cab In case of a power failure these can only be operated manually when the power to the valve motor is disconnected Quick reference decals are located on the frame near the MANIFOLD SYSTEM for easy in field operation of the valves Opera...

Page 29: ...ited to fill from open water reservoirs lakes rivers etc It is recom mended only to fill from closed reservoirs mobile water tank etc to avoid contamination WARNING IF SUCTION HOSE FILTER IS CARRIED ON THE SPRAYER IT CAN BE CONTAMINATED BY SPRAY DRIFT WHICH WILL BE TRANSFERRED TO WATER SUPPLY WHEN FILLING Operation 4 Filling of clean water tank The clean water tank is integrated in the platform an...

Page 30: ...shows the same pressure as in step 6 to left Turn the screw clockwise for higher pressure counterclockwise for lower pressure 3 Turn the first boom distribution valve switch B back on 4 Repeat steps 1 3 for the remaining boom distribution valves Note Hereafter adjustment of the constant boom pressure will only be needed if you change to nozzles with other capacities but not required if only changi...

Page 31: ...the 1302 pump is factory preset at 30 psi 2 bar This is suitable for nozzle spray pressures between 45 psi 3 bar and 225 psi 15 bar If different nozzle pressures are required set pressure damper at pressures indicated Remote 4 pressure gauge The remote pressure gauge is integrated into the front locker This gauge measures the working pressure in the boom tubes as close to the nozzles as possible T...

Page 32: ...g of chemicals Chemicals can be filled into the tank two different ways 1 Through the tank lid 2 By using the HARDI CHEMICAL FILLER device WARNING Be careful not to slip or splash chemicals when carrying chemicals up to the tank lid WARNING Always use the personal protec tion stated on the chemical container and as a minimum always use gloves face protec tion shield and coveralls 1 Filling through...

Page 33: ...ated on the chemical container label See section Filling of Water 2 Turn the handle at the suction Manifold towards Main tank and green valve towards Agitation Turn the handle at the Pressure Manifold towards HARDI CHEMICAL FILLER Close remaining valves 3 Engage the pump and set P T O speed at 540 r p m or 1000 r p m depending on pump model 4 Open the bottom valve A on the HARDI CHEMICAL FILLER an...

Page 34: ...les cannot always guarantee a 100 cleaning of the tank Always clean manually with a brush afterwards espe cially if crops sensitive to the chemical just sprayed are going to be sprayed afterwards Technical Residue Inevitably a quantity of spray liquid will remain in the system It cannot be sprayed properly on the crop as the pump takes in air when the tank is about to be empty This Technical Resid...

Page 35: ...pplier for recommended chemical rate and water application rate Always wear protective gloves when handling nozzles The following tables show what types of spray nozzles are suitable for different applications It is important to use the correct nozzle Nozzle Selection HARDI ISO COLOR TIPS 110 degree flat fan one piece cap and nozzle color coded for flow rate selection For herbicides insecticides a...

Page 36: ...mally used with these nozzles 371551 SOLID STREAM NOZZLE for high volume liquid fertilizer application In this application the 1553 nozzle is always used with 330013 o ring and 50 80 or 100 mesh screens HARDI QUINTASTREAM 5 HOLE LIQUID FERTIL IZER NOZZLE Five streams of liquid are distributed at different angles and flows Highest flow is from the middle stream and lowest in the outer overlapping s...

Page 37: ...our test strip Row width for broadcast application is equal to your nozzle spacing For your drop nozzle or band application use row spacing Row width or nozzle spacing in Distance ft 40 102 38 107 36 113 34 120 32 127 30 136 28 146 26 157 24 170 Row width or nozzle spacing in Distance ft 22 185 20 204 18 227 16 255 14 291 2 Measure the amount of time it takes you to travel the test strip when thro...

Page 38: ... workday or before servicing is done to avoid unnecessary contact with chemicals Cleaning the sprayer Guidelines 1 Read the whole chemical label Take note of any particular instructions regarding recommended protective clothing deactivating agents etc Read the detergent and deactivating agent labels If cleaning procedures are given follow them closely 2 Be familiar with local legislation regarding...

Page 39: ...n contact with all the components Leave the distribution valves until last Some deter gents and deactivating agents work best if left in the tank for a short period Check the label The Self Cleaning Filter can be flushed by removing the by pass hose from the bottom of the filter Stop the pump and remove the hose Start the pump for a few seconds to flush filter Be careful not to lose the restrictor...

Page 40: ...r periods Note If the sprayer is cleaned with a high pressure cleaner or fertilizer has been used lubrication of all sections is recommended Lubrication Recommended lubricants About lubricants Guidelines greasing Pump grease into zerks until new grease becomes visible Maintenance Ball bearings Universal Lithium grease NLGI No 2 Slide bearings Lithium grease with Molybdenumdisulphide or graphite Oi...

Page 41: ...39 HARDI COMMANDER OPERATOR S MANUAL Operating hours Type of lubricant Lubrication schedule Position on the sprayer Boom Trailer Maintenance B 50h 5 1 2 3 7 5 4 6 8 ...

Page 42: ...40 HARDI COMMANDER OPERATOR S MANUAL All models Maintenance 1 4 A 200h 5 2 C 50h B 50h A 10h B 50h B 10h 3 A 50h B 200h 6 C 200h ...

Page 43: ...41 HARDI COMMANDER OPERATOR S MANUAL 8 Maintenance 7 C 250h B 50h C 500h ...

Page 44: ...aft check 4 Check all fasteners 5 Lubricate according to schedule 100 hours service or bi weekly whichever comes first Do all previous mentioned 1 Fixed drawbar check adjust 250 hours service or monthly whichever comes first Do all previous mentioned 1 Wheel bearings check and adjust if necessary 2 Hydraulic circuit check 3 Hoses and tubes check 4 Readjustment of the boom refer to EAGLE or FORCE B...

Page 45: ...awbar Shock absorbers inspect Level indicator adjustment Cord renewal level indicator Seal renewal drain valve Nozzle tubes and fittings Replacement of transmission shaft protection guards Replacement of transmission shaft cross journals Adjustment of 3 way valve Change of bulbs Change of tires Adjustment of breakaway device Yaw dampers Rubber dampers Always check that all lock nuts are tight afte...

Page 46: ... 280 Nm Bolt 8 and 9 are situated behind the spring 10 hours service 1 Suction filter To service the suction filter 1 Pull out the steel clip A 2 Lift the suction hose fitting B from housing 3 Filter guide and filter C can now be removed To reassemble 4 Press the guide onto filter end 5 Place the filter into housing with guide facing up 6 Ensure the O ring D on the hose fitting is in good conditio...

Page 47: ...oses or tubes A B C 100 hours service 1 Check adjust drawbar Fixed drawbar only If to much play is found in the lateral movements of the drawbar it must be adjusted Adjust the turnbuckles A on each side in order to adjust and center the drawbar A 50 hours service 1 Wheel bolts and nuts Tighten wheel bolts and nuts as follows with following torque wrench settings Wheel hub to rim plate 120 Ft lb 18...

Page 48: ...agms 1 With the valve covers removed as explained above remove the diaphragm bolts D 2 The diaphragms E may now be changed 3 If fluids have reached the crankcase re grease the pump thoroughly Also check the drain hole at the bottom of the pump is not blocked Torque Settings for 363 463 pumps Pump Valve Cover Diaphragm Model Ft lb Nm Bolt Ft lb Nm 363 50 70 45 60 463 65 90 60 80 1 Ft lb 1 36 Nm IMP...

Page 49: ...ing off the valve housing Then unscrew the screw D and replace the valve cone E Reassemble in reverse order B A C D E F Pump valves and diaphragms replacement 1302 pumps NOTE It is recommended that if one or more diaphragms and or valves need replacing they all should be replaced Diaphragm pump overhaul kit valves seals dia phragms etc Pump model HARDI part No 1302 750175 Changing valves 1 Remove ...

Page 50: ...much play is found in the drawbar the wear bushes must be replaced 1 Place stop wedges in front of and behind both wheels 2 Jack up the frame and support it properly 3 Remove the drawbar extension to reduce the weight of the drawbar 4 Loosen the two bolts A and support the bracket B in order to keep it in a level position e g by a rope fastened to the platform railing 5 Without dismantling the hyd...

Page 51: ...nd seat can be changed the following way DANGER Do not enter the inside of the tank the parts can be changed from underneath the tank WARNING Use eye face protection mask when dismantling the tank drain valve 1 Make sure the tank is empty and clean 2 The valve must be closed and the string loose Maintenance A C B 3 Pull out the clip A and pull down connecting piece B The entire valve assembly can ...

Page 52: ...condi tions 9 Apply a thin layer of anti corrosive oil e g SHELL ENSIS FLUID CASTROL RUSTILLO or similar on all metal parts Avoid oil on rubber parts hoses and tires 10 Fold the boom in transport position and relieve pressure from all hydraulic functions 11 All electric plugs and sockets are to be stored in a dry plastic bag to protect them against moisture dirt and corrosion 12 Remove all the con...

Page 53: ...The actual tank level in the main tank can be observed on the tank level indicator B The scale is displayed in US gal or liters Equipment and Accessories Front Locker The locker is mounted to the front of the platform It is for the purpose of storing non contaminated protective gear soap for hand washing etc The locker is split in two compartments to enable the separation of clean clothes from con...

Page 54: ...hine screws to the 4 pre drilled holes in the platform base Small Left Hand Storage Locker optional The locker can be mounted next to the HARDI FILLER It is for the purpose of storing pesticide con tainers in use nozzles calibration and compound equipment The locker is fitted to a mounting which is bolted to the frame of the trailer A drain in the bottom makes it possible to clean and drain the lo...

Page 55: ...am Marker Operator s Manual for complete operation instructions Foam Marker Tank Manifold pressure gauge optional A manifold pressure gauge is available to mount below the boom pressure gauge for reading the pressure in the manifold plumbing system Flush System optional Flush system provides a means to be able to flush the pump controls boom feed lines and complete boom and nozzles with clean wate...

Page 56: ...zzles on Top of Tank HARDI Controller 2500 optional The HARDI Controller 2500 permits automatic control of the application rate This allows you to concentrate on driving as the rate is automatically maintained by the HC 2500 Press the up or down arrow keys to change the application rate Easy quick and simple Up to 8 spray boom section control is possible Mustang 3500 Controller optional The Mustan...

Page 57: ... efficiency 5 Poorly reassembled pumps especially diaphragm covers will allow the pump to suck air resulting in reduced or no capacity 6 Hydraulic components that are contaminated with dirt result in rapid wear to the hydraulic system Therefore ALWAYS check 1 Suction pressure and nozzle filters are clean 2 Hoses for leaks and cracks paying particular attention to suction hoses 3 Gaskets and O ring...

Page 58: ...mp diaphragm and valve covers Fill suction hose with water for initial prime Clean filters Check yellow suction pipe is not obstructed or placed too near the tank bottom Restrictor nozzle in Self Cleaning Filter not fitted Safety valve spring for Self Cleaning Filter not tight Too little distance between yellow suction pipe and tank bottom Check for obstructions and wear Check for dirt at inlet of...

Page 59: ...oil flow has no air in it not whitish Open or close until desired speed is achieved Remember oil must be at operating tempera ture Check output pressure of tractor hydraulics Minimum for sprayer is 2000 psi 130 bar Check and top up if needed Secure boom Dismantle and clean Check for proper 12V power supply Check for defective switch es Check continuity of cables Check for operation of applicable s...

Page 60: ...e ECP Operating unit FAULT Compressor will not run Compressor runs but will not make foam Will not make enough foam Foam drops will not last Keeps blowing fuses PROBABLE CAUSE Various Various Various Various Various CONTROL REMEDY Short in electrical system or bad compressor 12 volt supply not connected or bad connection Bad printboard Defective switch in control box Bad printboard Not enough foam...

Page 61: ...f so equipped Flush Rinse System problems Troubleshooting FAULT Filler hopper will not empty Filler hopper empties too slow Filler hopper backfills when bottom tank discharge valve is open PROBABLE CAUSE Various Various Various CONTROL REMEDY Pressure selection valve not in correct position Sprayer pump not running Bottom tank discharge valve not open all the way Restrictor cone from pump supply n...

Page 62: ...he valves Use a proper tool for this purpose Remember to reset the system to original setting Cause The problem may be due to a blown fuse One spare fuse is located inside the junction box A ECP operating unit In case of power failure it is possible to operate all functions of the operating unit manually First discon nect the multi plug from the control box Now manually turn the emergency control ...

Page 63: ... bar 0 15 bar 0 15 bar Note 463 High Capacity HC diaphragm pump fluid systems only for 80 120 24m 36m booms Note All weight measurements are approximate values with booms in transport position flush tank chemical inductor and foam marker for suspended axle systems add approximately 550 660 lbs 250 300 kg N A Not Available Main tank capacity 750 Gallon 2840 Liter 1200 Gallon 4540 Liter Flush tank c...

Page 64: ...of distribution valve Wire number or color code 6 5 4 3 2 2 3 4 5 6 G Y green yellow 9 9 G Y G Y 1 1 1 3 3 5 7 9 5 7 3 5 2 4 6 2 4 6 8 10 12 2 4 6 8 Electrical connections Rear lights Position Wire color 1 Ground White 2 Work lamps Black 3 LH flashing turn indicator Yellow 4 Free Red 5 RH flashing turn indicator Green 6 Free Brown 7 Free Blue The wiring is in accordance with ANSI ASAE S279 11 1 2 ...

Page 65: ...ch Blue Brown Black S2 function Open Working light cannot be activated unless parking light is on Closed Working light independent of parking light Connected directly to battery Pin 2 Black Pin 6 Brown Pin 4 Red Pin 5 Green Pin 3 Yellow Pin 7 Blue Pin 1 White Note Working light on off The center tab of the selector switch must be connected to pin 2 In addition pin 2 on the tractor must be connecte...

Page 66: ...OR S MANUAL Technical specifications A B P T DH Optional TO SOLENOID VALVE BLOCK TO TRACTOR PARALIFT LOCK CYLINDER LEFT FOLD LEFT TILT RIGHT TILT RIGHT FOLD TO TRACTOR EAGLE boom hydraulics SPB Z and SPC Z FORCE Boom hydraulics ...

Page 67: ...y period will HARDI be liable for damages of loss of use or damages resulting from delay or any consequential damage 2 We cannot be held responsible for loss of livestock loss of crops loss because of delays in harvesting or any expense or loss incurred for labor supplies substitute machinery rental for any other reason or for injuries either to the owner or to a third party nor can we be called u...

Page 68: ... This five year extended warranty is subject in each instance to the pump being inspected and approved for replacement or repair by HARDI personnel before HARDI will accept any liability hereunder 10 HARDI reserves the right to incorporate any change in design in its products without obligation to make such changes on units previously manufactured 11 The judgement of HARDI in all cases of claims u...

Page 69: ...67 HARDI COMMANDER OPERATOR S MANUAL Notes ...

Page 70: ...68 HARDI COMMANDER OPERATOR S MANUAL Notes ...

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Page 72: ...1 4160 337 Sovereign Rd London Ontario N6M 1A6 Phone 519 659 2771 Fax 519 659 2821 For Product Service or Warranty Information Please contact your local HARDI dealer To contact HARDI directly Please use the HARDI Customer Service number 1 866 770 7063 Or send your email to CUSTSERV hardi us com HARDI NORTH AMERICA INC Visit us online at www hardi us com ...