Husqvarna Grinder PG530 User's Manual
Contents
1. able speed drive frequency converter will draw more current to compensate This is why poor power supply will lead to the machine drawing maximum current on a premature basis for further comments see page 11 FAULT HISTORY The fault history menu stores the last series of faults experienced by the variable speed drive frequency converter If there is a recurring fault pattern experi enced by the machine the information can be obtained from the fault history menu For more on faults see trouble shooting faults 14 English ___s Faultsandtrouble shooting Faults and trouble shooting When either one of the variable speed drives or frequency converters in the machine experience a fault and trip out they will cease to run and an error message will appear flashing on the keypad display see picture below The following list are the most commonly experienced faults and possible action steps Fault code Fault Code Possible Cause Action o 1 OVER CURRENT Motor being worked too hard and Check current being drawn when machine is drawing extra current running Reduce speed setting and current draw back into acceptable limits as described on previous page Short circuit on output side of vari Check wiring in plugs connected to motor cables able speed drives or frequency con or inside connection boxes on motors verters re Motor failure very rare Have motor tested and replace if required Poor voltage2. The full set diamond configuration should be used when a flat floor finish is desired The below table gives some examples of possible ap plications for the two arrangements Application Full set is best Half set is best Ceramic tile adhesive removal Carpet glue removal Epoxy paint removal Vinyl adhesive removal Rain damaged concrete Smoothen exposed aggregate o o ooo K o Lippage removal in terrazzo stone tles K S Surface polishing of concrete floors ooo S E Grinding to expose aggregate in concrete polishing application X f Remove lippage from terrazzo natural stone tles X o oo So Flatten undulations in concrete floors O Koo S Re polish floors that have been ground before TK English 19 Diamond selection Selecting the correct diamonds for your application The following suggestions cover the basic principles for diamond selection for different applications Application _ Singles bond Flatten floor Hard concrete Flatten floor Medium concrete Flatten floor Soft concrete Ceramic tile adhesive removal Vinyl or Carpet glue removal Hard concrete SOFT 160r30 Vinyl or Carpet glue removal Medium concrete MEDIUM 6or16 Vinyl or Carpet glue removal Soft concrete HARD 6or16 Epoxy paint removal Hard concrete Epoxy paint removal Medium concrete Epoxy paint removal Soft concrete T Rain damaged concrete Smoothen exposed aggregate Lippage removal in terrazzo stone tiles a a a Su
3. are going to use for a given application Grinding disc set up They way diamond segments are set up on the grind ing heads of the machine will also greatly influence the performance of the machine the productivity levels and also the finished floor quality There are basically two types of diamond configura tions that can be used when using the grinder 1 Full set of diamonds when there are diamonds placed at each of the six positions on the diamond holder discs see pictures above 2 Half set of diamonds when there are diamonds placed at three alternating positions on the diamond holder discs see pictures above Diamond selection Full and half sets of diamonds By changing the way the diamonds are set up on the diamond holder discs an operator can significantly ef fect the performance of the machine and therefore the finished product HALF SET OF DIAMONDS When the diamonds are set up as a half set they tend to follow the surface of the floor Similar to a tripod for a camera which can be placed on an uneven surface and yet still find a stable footing The half set diamond configuration should only be used when a flat floor finish is not required FULL SET OF DIAMONDS When the diamonds are set up as a full set they tend not to follow the surface of the floor If the floor has un dulations the machine will grind the high areas yet miss the low spots unless the high areas are ground down first
4. determined by the planetary head direction of rotation The head of the machine will pull to the right and therefore will be felt on the right hip of the operator when the planetary head is set in the REVERSE direction Once both speed and direction have been nominated switch on dust extraction or vacuum device IMPORTANT AN It is highly recommended to use the Husq This sideways pull can be very useful when grinding varna DC 3300 dust extraction system for particularly along a wall Set the machine so that it pulls towards the wall and then control the machine so it can just touch the wall This will ensure a grind close to the wall wall or object Direction is also a matter of personal preference It should be noted however that when both grinding discs and planetary heads are running in the same direction a more powerful grinding force is created be tween the diamonds abrasives and floor being ground The end result ishigher productivity than when the discs are set to run in opposite directions 10 English complete dust control Standing behind machine with handlebars set as described earlier apply a small amount of downward pressure on the handle Switch the machine to run mode using the STOP RUN switch on the control panel The machine should start smoothly and acceler ate to the selected speed over a period of 5 seconds Changingthediamonds Changing the diamonds As different applications r
5. supply to machine will See comments on page 10 result in excess current draw 3 EARTH FAULT Short circuit on output side of vari Check wiring in plugs connected to motor cables able speed drives or frequency con or inside connection boxes on motors verters re Motor failure very rare Have motor tested and replace if required 9 UNDER VOLTAGE Insufficient voltage supply to ma Check power supply and ensure correct voltage chine Power supply to variable speed Re connect power to grinder drives or frequency converters has been turned off 11 OUTPUT PHASE Short circuit on output side of vari Check wiring in plugs connected to motor cables able speed drives or frequency con or inside connection boxes on motors SUPERVISION verters re Motor failure very rare Have motor tested and replace if required 14 UNIT OVER TEM Variable speed drives or frequency Open door on electrical cabinet to increase ven PERATURE converter over temperature due to tilation Have variable speed drives or frequency high temperature working environ converter tested by service agent ment or faulty temperature sensor 15 MOTOR STALLED Motor being worked too hard and Check current being drawn when machine is drawing extra current running Reduce speed setting and current draw back into acceptable limits as described on previous page Mechanical jam preventing motor Try rotating grinding discs and planetary head by from turning han
6. three main mechanical items to check 1 Grinding Heads 2 Planetary drive system 3 Planetary seal Grinding heads There are 2 different grinding head options 1 Conventional Demolition heads designed for heavy duty preparation grinding where an extremely robust system Is required 2 Spring steel head system designed more for finish ing or lighter grinding applications CONVENTIONAL DEMOLITION HEADS The below diagram illustrates the main parts compris ing this type of grinding head 1 2 4 3 1 Head mate 2 Head plate 3 Head lock 4 Head spring 22 English The interrelation between the above four components enables a dynamic system which is both robust and flexible The head pins are fixed to the head plate giving rigidity and stability The head mate is situated above the head plate and is held in place by a series of holes head pin holes 2 1 Head mate 1 Head plate 2 Head pin hole 2 Head pins Between the head plate and head mate are 3 white silicone springs which facilitate shock absorption and flexibility in the system The head pins are able to move within the head pin holes creating a shock absorber type system similar to that in most motor vehicles Over an extended period of time the head pin holes wear open Along with this the head pins wear and reduce in diameter This combined wearing of the two creates excessive movement or slop within the grind ing head
7. GRIT SIZE Changing the size of the diamond grit to a smaller par ticle grit size will effect the performance of the diamond tool in the following ways e Create a finer scratch pattern e Increase the life of the diamond tool The opposite will occur when changing to a larger particle grit size BINDING AGENT METAL BOND OR RESIN BOND Increasing hardness of bond will e Increase life of diamond tool e Decrease production rate e Cause diamond tool to leave finer scratches in dry grinding applications when compared to a softer bond diamond tool with the same diamond grit size The opposite will occur when making the metal or resin bond softer NUMBER OF DIAMOND SEGMENTS PADS UNDER THE MACHINE Increasing the number of segments under the machine will e Reduce pressure on each individual diamond seg ment Reduce wear rate on diamond segments e Reduce load on the machine and cause the grinder to draw less current e Create a smoother scratch pattern particularly on soft floors The opposite will occur when decreasing the number of segments under the machine WET AND DRY GRINDING When using diamond segments wet the following principles apply e Production rates will be higher than dry grinding e Diamond segments will wear faster due to pres ence of slurry and therefore harder bonds can be used when comparing with dry grinding e Scratches from diamond grit will be deeper When using dia
8. Ola EE understand the instructions before using the machine Operator s manual Please read the operator s manual carefully and make sure you Manual de instrucciones Husqvarna Lea detenidamente el manual de instrucciones y aseg rese de entender su contenido antes de utilizar la m quina Bedienungsanweisung PG530 Lesen Sie die Bedienungsanweisung sorgf ltig durch und machen Sie sich mit dem Inhalt vertraut bevor Sie das Gerat benutzen FR Manuel d utilisation GB ES DE FR Lire attentivement et bien assimiler le manuel d utilisation avant d utiliser la machine HUSQVARNA CONSTRUCTION PRODUCTS Contents English Contents Key to symbols 4 Safety Instructions 5 Introduction 6 Transportation 6 Storage 6 What is what 7 Setting up Operation 9 Changing the diamonds 11 Variable speed drives frequency converters 12 Faults and troubleshooting 15 Diamonds 17 Diamond selection 18 Maintenance 22 Maintenance schedule 25 Technical Data 26 English 3 Key to symbols Key to symbols The symbols below are used on the machine and in this Operator s Manual It is important that the user understands the significance of these in order to work with the machine safely 4 English Please read the operator s manual carefully and make sure you under stand the instructions before using the machine WARNING Dust forms when grinding which can cause injuries if inhaled Us
9. achines are designed for wet or dry grinding of marble terrazzo granite and concrete Their applications range from rough grinding through to a polished finish This manual covers the Husqvarna PG 530 series of floor grinders equipped with twin motor drive here after referred to as Dual Drive Technology It is extremely important all users be familiar with the contents of this manual before commencing operation of either machine Failure to do so may result in dam age to machinery or expose operator to unnecessary dangers f IMPORTANT Only staff that have received the necessary education both practically and theoretically concerning their usage should operate the machinery Transportation The machine comes equipped with inbuilt advanced electronic systems called variable speed drives or frequency converters These drives enable the variable speed and direction component of each of the motors The drives are located in the steel cabinet mounted on the machine chassis As with all electronic equipment the drives are sensi tive to excessive vibration rough treatment and high levels of dust Much care and attention has been given by the manufacturer to ensure maximal protection is given to the drives Note the shock absorbing mounting system used to mount the steel cabinet on the machine chassis frame When transporting it is important to ensure the ma chinery is properly secured at all times to eliminate bouncin
10. been heavily trowelled helicoptered the concrete will behave as if ithas a high compressive strength and therefore require a soft bond segment Accordingly if a concrete surface is coarse aggressive e g rain damaged shot blasted scarified exposed aggregate e t c the concrete will behave as if ithas a low compressive strength and therefore require a hard bond segment Surface coatings contaminants e g Epoxy coatings ceramic tile adhesives levelling compounds screeds will often have a larger bearing on what diamond to se lect than will the compressive strength of the concrete As a general rule when grinding a concrete slab for the first time and you are unsure about its hardness always begin with harder bond diamonds under the machine This will ensure the least amount of wear on the diamond segments If a hard diamond segment is not suited to the application all it has cost is a little amount of time without wearing out the diamonds If performed the other way around i e a soft segment is used to begin with and the concrete is soft or pos sesses an abrasive surface or surface contaminant it is quite possible to wear out a considerable amount of diamond in very short period of time English 21 Maintenance Maintenance Used correctly the machine is an extremely low maintenance and reliable This section covers the general maintenance items that need attention on a periodic basis There are
11. cification e Be on your guard for electrical shocks Avoid having body contact with lightning conductors metal in the ground e Never drag the machine by means of the cord and never pull out the plug by pulling the cord Keep all cords and extension cords away from water oil and sharp edges e Make sure the cord is not pinched in doors fences or the like e Check that the cord and extension cord are intact and in good condition Never use the machine if the cord is damaged hand it in to an authorized service workshop for repair e Do not use a rolled up extension cord e The machine should be connected to an earthed outlet socket e Check that the mains voltage corresponds with that stated on the rating plate on the machine e Ensure the cord is behind you when you start to use the machine so that the cord will not be dam aged At no time should lifting of machinery be attempt ed without mechanical means such as a hoist or fork lift WARNING Overexposure to vibration can lead to circula tory damage or nerve damage in people who have impaired circulation Contact your doc tor if you experience symptoms of overexpo sure to vibration These symptoms include numbness loss of feeling tingling pricking pain loss of strength changes in skin colour or condition These symptoms normally ap pear in the fingers hands or wrists English 5 Introduction Introduction The Husqvarna PG 530 floor surfacing m
12. d to see if jam exists 16 MOTOR OVER TEM Motor being worked too hard and Check current being drawn when machine is PERATURE drawing extra current running Reduce speed setting and current draw back into acceptable limits as described on previous page English 15 Faults and trouble shooting Further problems that may be experienced when using the grinder and potential solutions are as follows Possible Cause Potential Solution GRINDER IS HARD TO HOLD Not enough diamonds under the machine Increase number of diamonds under machine ONTO if grinding thick glue or soft floors too to reduce load on grinder and operator few diamonds under the machine will greatly increase the load on grinder and operator Usually also accompanied by high current draw by large motor Large motor not working this can be Check large motor is plugged in Check there caused by fault with motor fault with wir are no faults on larger variable speed drive or ing to motor or fault with large variable frequency converter Check that large vari speed drive or frequency converter able speed drive or frequency converter is on Check that large variable speed drive or frequency converter is functioning properly unplug both motors set display on keypad to Output Frequency switch machine to RUN see if numbers on screen change from zero and begin counting up If numbers stay on zero large variable speed drive or frequency converter i
13. e an approved breathing mask Always provide for good ventilation Always wear e Approved protective helmet e Approved hearing protection e Protective goggles or a visor e Dust forms when grinding which can cause injuries if inhaled Use dust mask Always wear sturdy non slip boots with steel toe caps Always wear approved protective gloves Inspection and or maintenance should be carried out with the motor switched off and the plug disconnected Visual check Regular cleaning is required This product is in accordance with ap plicable EC directives Safety Instructions Safety Instructions WARNING Under no circumstances may the machine be started without observing the safety instruc tions Should the user fail to comply with these Husqvarna Construction Products Sweden AB or its representatives are free from all liability both directly and indirectly Read through these operating instructions and make sure that you understand the contents before starting to use the machine Should you after reading these safety in structions still feel uncertain about the safety risks involved you must not use the machine please contact your dealer for more informa tion Please read the operator s manual carefully Only qualified staff should be allowed to operate machinery Never use a machine that Is faulty Carry out the checks maintenance and service instructions described in this manual All re
14. ectrical cabinet in case of fault occurring Stop Run To start or stop machine during normal operation IMPORTANT AN It is important to use the STOP RUN switch to control the running of the machine not the EMERGENCY STOP button Each time the EMERGENCY STOP button is pressed it shuts down the drive frequency converter Frequently powering up and down of the drive frequency converter will reduce the life span of the drive frequency converter Control panel 8 English Setting up Operation Setting up Operation Position grinder on the working area Make sure there are diamonds underneath machine and that the head locks shear pins are tight f IMPORTANT When using the machine each grinding head must always have the same diamond type and number of diamonds as the other grinding heads Each grinding head must have diamonds the same height as the other grinding heads Adjust rubber skirt so that a good seal is established between the floor and head of machine see picture below Ensure join in skirt is at the front of the ma chine Setting of the skirt is essential to obtain good dust extraction and eliminate the possibility of airborne dust when dry grinding Set handle to most comfortable working height using adjustment lever f IMPORTANT It is recommended that this height be set as close as possible to the height of the opera tors hip bone When the machine is running there will be a gri
15. elow Remove 2 bolts either side Remove these bolts Remove cover off motor terminal box Inspect for dust build up here Remove these bolts If the planetary seal is working effectively there should be a very minimal amount of dust observed under the cover of the machine If there is a build up of 5 6mm 1 4 inch then it is more than likely it is time to remove the machine cover and check the condition of the plan etary seal Remove this bolt af Lift off seal If planetary seal is worn or needs replacement contact your Husqvarna Construction Products distributor for a new planetary seal replacement kit 24 English Maintenance schedule Maintenance schedule QD Check that head lock Tighten head locks and re set in thread locking com Daily are tight pound if required Suggested thread locking compound Loctite 680 Inspect heads for slop Examine machine heads while machine tipped back Daily broken fingers if using Disconnect Planetary Drive motor small motor and run spring steel heads discs at lowest speed Check to see how concentric true grinding heads are running Check effectiveness of Remove planetary head motor gearbox system and Weekly planetary seal check for presence of dust under machine cover Check condition of Remove planetary head motor gearbox system and in Weekly with Planetary Seal chain ring spect chain links in chain ring Ensure links are clean a
16. els to both turn in the same direction i e both in clockwise rotation or both in counter clock wise rotation 2 Head comprising of motors cover grinding satel lite planetary heads and internal components Clockwise rotation of speed control will in crease speed of planetary head and grinding The machine has been manufactured to allow move heads ment between the chassis and head via the connection point at the lifting lugs and chassis pins This move ment is important during the grinding process as it creates a floating effect for the head Planetary head Grinding satellite heads The floating gives the head a self leveling effect negat ing the need to adjust the height of the head as the machine passes over floor areas with different slopes or undulations Control panel The control panel consists of a number of switches and dials giving 6 separate controls see picture Power This button when depressed will turn on power supply to the unit when the EMERGENCY STOP button has been released Emergency Stop When pushed will immediately Dust extraction port shut down machine by totally stopping power supply to drives frequency converters in electrical cabinet Disc Speed Speed control for grinding heads and planetary head Fwd Rev Red Direction control for grinding heads and planetary head Reset Will clear fault function error message on drive frequency converter located in el
17. equire different selections of diamond tools there will be many occasions when the grinding discs need to be changed Following is a guide for this procedure Preparation 1 Ensure STOP RUN switch is in STOP position and the power plug disconnected as unintentional start ing of machine while changing discs can result in serious injury 2 Have a set of gloves ready as diamonds can get very hot during dry grinding applications Changing 1 Set handle in upright position illustrated right 2 Pull back on handle to lift grinding head off the ground 4 Lay machine back on the ground 5 Put on gloves 6 Remove grinding disc by slightly rotating disc and then pull off direction that the discs will need to be rotated will depend on the direction the machine was last running 7 Check to ensure all head locks shear pins are tight 8 Once new diamonds have been attached reverse procedure to lower machine to ground 9 As new diamonds may be a different height to set being previously used re adjust skirt to ensure good seal is established with the floor English 11 Variable speed drives frequency converters Variable speed drives frequency converters Each Husqvarna PG 530 is equipped with 1 variable speed drive or frequency converter This unit is incor porated into the machine for the following reasons 1 Functional e Manipulate incoming power to enable increase decrease in speed amp di
18. g of the variable speed drives Ensure the chassis or frame section of the machine is secured down at all times when in transit The machine should always be transported under cover limiting the exposed to natural elements in particular rain and snow 6 English IMPORTANT AN The machine should not be lifted by handle motor chassis or other parts Transportation of the machine is best done on a pallet skid to which the machine must be firmly secured Do not attempt to slide the tines forks from a fork lift under grinding heads unless on a pallet skid Failure to do so can cause irrepa rable damage to grinding heads of machine and internal parts It is recommended that machinery be transported with a set of diamonds attached at all times to ensure pro tection of locking mechanism for diamond plates Storage The machine should always be stored in a dry place when not in use What is what 1 Hour counter 2 Electrical cabinet 3 Planetary head motor 1 5kW 1Hp 4 Grinding Satellite heads motor 3kW 4Hp 5 Lifting lugs 6 Cover Shroud What ts what 7 Skirt 8 Chassis Frame 9 Handle bars 10 Control Panel 11 Handle bar adjuster English 7 What is what The machine can be divided into two main parts These can be identified as follows AN IMPORTANT 1 Chassis Frame section comprising handle bars Planetary head and grinding heads are set electrical cabinet steel frame and whe
19. ked by an electrician or Husqvarna Con struction Products GRINDER IS JUMPING AROUND Grinding heads may be worn out or Check grinding heads for broken parts or excess movement damaged Diamonds may not be fitted correctly or Check to ensure all diamonds are fitted cor different height diamonds may be on the _ rectly and are the same height grinding heads Head locks may be loose or missing Check to ensure all head locks are present and tight 16 English Diamonds Diamonds Background Diamond abrasives usually consist of 2 components 1 Diamond powder also Known as diamond crystals or grit By changing the size of the diamond powder or grit we can change how coarse or fine the scratches will be that are left behind from the grinding process 2 A binding agent metal or resin Diamond powder is mixed and suspended in either a metal or resin binding agent When suspended in a metal binding agent the finished product is referred to as a Metal Bond or Sintered diamond segment When sus pended in a resin binding agent the finished product is referred to as a Resin Bond diamond segment or pad By changing the hardness of the binding agent we can change how fast or slow the diamond abra sive will wear General Principles The following are general rules regarding diamond segments in grinding applications As with all general rules there are exceptions or cases when it is not the case DIAMOND
20. lares under sole responsibil ity that the Husqvarna PG530 dating from 2007 serial numbers and onwards the year is clearly stated on the rating plate followed by the serial number complies with the requirements of the COUNCILIS DIRECTIVE of June 22 1998 relating to machinery 98 37 EC annex IIA of May 3 1989 relating to electromagnetic compatibility 89 336 EEC and applicable supplements of December 12 2006 relating to electrical equipment 2006 95 EC The following standards have been applied EN 55014 1 EN55014 2 EN61000 3 2 EN61000 3 3 The supplied machine conforms to the example that underwent EC type examination G teborg 16 July 2007 KEDR e Tim Van Der Veen Development Manager English 27
21. mond segments dry the following principles apply e Production rates will be slower on harder materials than if wet grinding e Softer bond segments will be required in order to encourage segment wear as there will be not slurry to help diamond segments to wear e Scratches from diamond grit will not be as deep compared to if it were also used for wet grinding e There will be more heat generated by the diamond segment Summary of diamond principles Diamond segmenis need to wear in order to achieve productivity Diamond segment wear can be influenced by the following factors e Pressure e Hardness of bond e Diamond grit size English 17 Diamond selection Full set of single segments Full set of twin segments e Presence of water e Number of segments under the machine e Adding an additional abrasive e g sand silicone carbide on the floor will increase wear Generally speaking the faster a diamond segment wears the faster the productivity will be By varying the above factors changes can also be made to effect the following e Scratch pattern e Current draw of machine e Flatness of floor See next section e Ease of operation 18 English Diamond Holder Disc Position for Diamond segment Half set of single segments Half set of twin segments Diamond selection The following section covers important factors to consider when selecting the diamond segment you
22. nd ing force pull to one side that can be felt through the handlebars Use the hip to resist this force instead of trying to control this through the arms such positioning will be much easier for the operator using the machine over prolonged periods of time Powering up machine i Ensure the STOP RUN switch is set on STOP rotate counter clockwise li Plug power supply to machine Only turn power on at plug once fully connected iii Disengage Emergency Stop button twist clock wise iv Depress Power button On doing so a soft clunk should be heard to come from within the electrical cab inet This indicates the line contactors have engaged supplying power to the drives frequency converters Setting Speed and direction On the control panel there is a FORWARD REVERSE and Speed dial knob Generally when starting the machine for the first time on any given application it is advised the speed setting should not exceed 7 initially When the operator is comfortable with the application speed may be increased IMPORTANT AN It is important to note the following when using the Husqvarna PG 530 single phase grinder Increasing the speed will also increase the current being drawn by the machine If on some applications the machine is draw ing too much current and tripping current limiting switches the speed of the machine must be reduced to compensate Low voltage supplies to the grinder may re
23. nd free from build up Check condition of Remove planetary head motor gearbox system and Weekly with Planetary Seal Drive Sprocket inspect condition of planetary drive sprocket Inspect internal compo Remove belt tensioner cover plate and check inside 6 monthly nents of machine machine for dust moisture or belt fragments Ensure to re seal cover plate with silicone sealant Clean contents of elec Blow out inside of electrical cabinet and variable speed Every 2 months trical cabinet drives or frequency converters with DRY compressed air IMPORTANT Prior to removing belt tensioner cover plate ensure cover plate and area surrounding cover plate are totally clean Avoid debris from enter ing into inside of machine English 25 CTechnical Data Technical Data PG 530 Grinding width 530mm 21 Grinding disc 3x240mm 9 5 Weight 200kg 440lbs Grinding pressure total 134kg 295lbs Grinding pressure per disc 44 7kg 98lbs Motor Power 3 75kW 5 0hp Power per grinding disc 1 25kW 1 7hp Grinding disc speed 200 710rom Planetary head speed 50rpm Direction of rotation FWD REV with grinding discs amp planetary head rotation in same direction not counter rotation Power supply 220 240 simple phase 12 amp 3 phase version available 26 English Technical Data EC declaration of conformity Applies to Europe only Husqvarna Construction Products SE 433 81 G teborg Sweden tel 46 31 949000 dec
24. pairs not covered in this manual must be performed by a repairer nomi nated by either the manufacturer or distributor Always wear personal safety equipment such as sturdy non slip boots ear protection dust mask and approved eye protection The machine should not be used in areas where potential for fire or explosions exist Machinery should only be started when grinding heads are resting on the ground unless carrying out a testing procedure as outlined in this manual The machine should not be started without the rubber dust skirt attached It is essential a good seal between machine and floor be established for safety especially when operating in dry grinding applications When changing the grinding discs ensure power supply to the unit is OFF by engaging the Emergen cy Stop button and the power plug disconnected The machine should not be lifted by handles mo tor chassis or other parts Transportation of the machine is best done on a pallet skid to which the machine must be firmly secured Extreme caution must be used when moving machinery by hand on an inclined plane Even the slightest slope can cause forces momentum making the machinery impossible to brake manually e Never use the machine if you are tired if you have drunk alcohol or if you are taking medication that could affect your vision your judgement or your co ordination e Never use a machine that has been modified in any way from its original spe
25. r OUTPUT FREQUENCY Monitor Menu This screen tells the operator the frequency the motor is running at when the machine is in operation The value for output frequency should be constant when the machine is running If there is a fluctuation in output frequency when the machine Is running generally this indicates the motor is running at or near the limit of its programmed current limit The current limits predeter mined and set by Husqvarna Constructions Products are as follows 1 Combined large and small motor 16 amps If there is a fluctuation in output frequency when the machine is in operation it is advisable to check the motor current as well This can be found by pressing the UP arrow on the keypad 3 times For trouble free operation concerning current issues it is best to keep output current at or around 12 13 amps The current draw of the motor can be reduced by reducing the speed of the motor using the speed dial on the control panel near the handle bars MOTOR CURRENT Monitor Menu This screen displays the current draw of the corre sponding motors See comments already covered un der OUTPUT FREQUENCY relating to motor current DC LINK VOLTAGE Monitor Menu This screen displays the quality of the power supply to the machine It will read higher values when the machine is in stand by and lower values when the machine is in operation When DC LINK voltage is reduced in the case of a poor power supply the vari
26. rection change e Regulate current and voltage supply to the motors to ensure motors run at optimum levels e g torque boost 2 Protection Diagnostic 1 9 Protection e Monitors incoming power to ensure suitability for machine and application being performed e Controls current being drawn by motors to ensure motors are running within safe operational limits to prevent damage to motor 2 e Monitors load on machine to ensure the grinder is not being overloaded thus offering protection for belt bearings and other internal components e Protects motors from faulty power supply e g run 4 ning on 2 phases Diagnostic e Identifies electrical faults with the machine and registers fault code e Has monitoring menus that help isolate cause of potential electrical faults J J 6 T e Monitoring menus also enable operator to gauge Keypad display how hard machine is working Whilst it is not essen tial for an operator to intimately know every feature Output mode Hertz in this example 1 Run direction fwd or rev of the variable speed drives or frequency convert ae ers it is useful to be familiar with both the fault 2 Indicates if unit is either stopped or running codes as well as some of the monitoring menus 3 Up key K ETE 4 Reset button eypad Displa yP prey 5 Left key Each variable speed drive or frequency converter has 6 Down key a keypad which will appear as illustrated on the right a when
27. rface polishing of concrete floors Hard concrete SOFT Surface polishing of concrete floors Medium concrete MEDIUM 60 Surface polishing of concrete floors Soft concrete HARD Grinding to exposed aggregate in concrete Hard concrete SOFT 16 or 30 Grinding to exposed aggregate in concrete Medium con MEDIUM 16 or 30 S crete 20 English Diamond selection Determining the hardness of concrete All concrete may feel hard particularly if you fall over on it so what do we mean when we talk about hard medium and soft concrete All concretes are measured by their compressive strength and depending on which part of the world you are from different compressive strength indices e g PSi amp MPa Generally speaking the higher the com pressive strength rating the harder the concrete and therefore the harder it will be to grind However other factors beside compressive strength ratings determine how hard the floor will be and therefore the correct diamond selection Since grind ing normally only deals with the surface of the concrete top 5mm or 1 4 inch often the way the concrete floor has been finished or the condition of the surface will have a greater bearing on what type of diamond to select rather than the compressive strength rating of the concrete SURFACE FACTORS TO CONSIDER WHEN MAK ING A DIAMOND SELECTION Generally speaking if a concrete surface is very smooth i e Most likely it has
28. s This slop will eventually cause vibration whilst the machine is operating Routine checks for slop in the grinding heads are recommended Life expectancy for grinding heads can vary between 6 and 12 months depending on amount of usage Replacement heads are available and simply bolt into place when the old ones are removed Maintenance Grinding Heads Drive System The Husqvarna PG 530 comes equipped with Dual Drive Technology As the grinding discs are driven by the large motor via an internal belt and because the belt is sealed inside the machine there is no mainte nance regarding this drive system until a major service belt and bearing replacement is due This is typically following 12 36 months of operation Planetary Drive System The second component to the Dual Drive Technol ogy system is the planetary head drive system which is powered by the secondary or small motor and gearbox arrangement This system is on the outside of the machine and will require routine maintenance The planetary drive system can be seen as illustrated diagram 1 Diagram 1 Grinding heads motor Motor terminal box Machine cover Gearbox mounting bracket Gearbox flange bracket Gearbox Motor terminal box CON OO fF ON Planetary drive motor 1 Diagram 1 Planetary Drive System Beneath the gearbox and concealed by the mounting brackets and machine cover there is a planetary drive sprocket
29. s not receiving run command from switch on control panel Machine needs to be checked by an electrician or by Husqvarna Construction Products Drive belt is slipping Remove belt tensioner cover plate on bottom of machine and check there is no water or dust on the inside of the machine that may be caus ing the belt to slip on the drive pulleys Drive belt is broken this can be con Replace internal drive belt firmed by turning one of the grinding heads by hand If all grinding heads rotate together belt is not broken If only one grinding head turns belt is broken GRINDER SOUNDS LIKE IT IS Small planetary drive motor not plugged Check small planetary drive motor is plugged OVER REVVING in in Small motor not working this can be Check small motor is plugged in Check there caused by fault with motor fault with are no faults on small variable speed drive or wiring to the motor or fault with large vari frequency converter Check that small vari able speed drive or frequency converter able soeed drive and frequency converter is on Check that small variable speed drive or frequency converter is functioning properly unplug both motors set display on keypad to Output Frequency switch machine to RUN see if numbers on screen change from zero and begin counting up If numbers stay on zero small variable speed drive or frequency converter is not receiving run command from switch on control panel Machine needs to be chec
30. situated on the output shaft of the gearbox This planetary sprocket engages with the chain ring also located beneath the machine cover and together form the main drive mechanism for the plan etary drive system This system is a dry system i e it is not required for there to be lubrication between the planetary drive sprocket and chain ring to allow any dust that may come into contact with the chain ring to fall back out again IMPORTANT AN Lubrication of this system will cause dust to build up in chain ring and drastically shorten the life of both the chain ring and planetary drive sprocket Diagram 2 Diagram 3 1 Planetary drive sprocket 2 Gearbox flange bracket Diagram 3 1 Gearbox mounting bracket 2 Machine cover 3 Chain ring Diagram 4 1 Planetary seal The chain ring and planetary drive sprocket are located beneath the cover of the machine however on the outside of the machine there lies the potential that they can be exposed to dust and other debris created during the grinding process In order to prevent this as much as possible a planetary seal has been installed to stop dust and other particles from coming into contact with the planetary drive mechanism Diagram 4 Planetary seal closeup English 23 Maintenance The effectiveness of the planetary seal can be moni tored by the simple removal of the planetary motor gearbox system by removing the four bolts shown b
31. sult in poor performance reduced speed and torque of the machine Factors which may contribute to low voltage supply to the machine include the following Poor mains power supply below 220V Working off a generator Using light duty power leads power leads with at least 2 5mm cores are highly recom mended Using more than 20m 65ft long power lead English 9 Setting up Operation Speed and direction setting is often a matter of per sonal choice Operators are encouraged to experiment to find which settings best suit the given applications The following table lists some suggested set ups for different applications APPLICATION DIRECTION SPEED Re grouting procedure during HIPERFLOOR FWD 5 8 process Direction of rotation The correlation between FWD REV amp Clockwise Coun ter clockwise rotation can be said as follows if looking at the grinding discs from underneath the machine For this reason the machine is set so that both the grinding heads and planetary rotation are set in the same direction Production tip To improve the cutting efficiency of diamonds change directions on a regular basis This will work both sides of the diamond crystals keeping the abrasives as sharp as possible by creating maximal exposure of the diamond crystal 1 REV Clockwise 2 FWD Reverse As mentioned when the machine is in operation it will pull to one side The direction of pull is
32. the machine has power connected to it 7 Right key 8 9 Output value 12 English Variable speed drives frequency converters Indicates quality of power supply The menu tree illustrated on this page outlines the important menu options that provide useful information for monitoring and diagnostic purposes when using the machine As can be seen on the menu tree to the right when the machine is turned on the variable speed drives or frequency converters are set to display the Output Frequency to the motor a zero value will register when the machine is in stand by mode It can also be seen that the Output Frequency page falls under the Monitor Menu The left hand column highlights that the two primary menus important to the operator are the Monitor Menu and Fault History menu Navigation through the menu tree is achieved by using the up down left and right keys on the keypad see previous page Parameter Menu f i Keypad Control Menu Active Faults Menu Faults History Menu System Menu Expanded Boards Menu Monitor Menu iHi i DC Link Voltage Motor Voltage Motor Power Motor Torque Hi Motor Current Motor Speed Output Frequency English 13 Variable speed drives frequency converters Menus and information they provide The following menu items screens on the variable speed drive frequency converters provide the following useful information to the operato
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