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Husqvarna PG820 - page 1
HUSQV ARNA CONSTRUCTION PRODUCTS GB ES DE FR Husqv arna PG680 PG820 Oper ator’ s manual Please read the operator’ s manual carefull y and make sure y ou understand the instructions before using the machine. Manual de FR GB ES DE instrucciones Lea detenidamente el manual de instrucciones y asegúrese de entender su contenido antes de utilizar la ...
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Husqvarna PG820 - page 2
English - 3 Contents English Contents Key to symbols 4 Safety Instructions 6 Introduction 7 T ransport 7 Storage 7 What is what 8 Setting up/Operation 10 Changing the diamonds 12 V ariable speed drives/ frequency converters 13 Faults and trouble shooting 16 Diamonds 18 Diamond selection 19 Maintenance 23 Maintenance schedule 27 T echnical data 28 ...
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Husqvarna PG820 - page 3
English - 5 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 signi fi cance of these in order to work with the machine safely . Inspection and/or maintenance should be carried out with the motor switched off and the plug disconnected. Visual check. Regular clea ...
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Husqvarna PG820 - page 4
6 - English 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. Never use a machine that has been modi fi ed in any way from its original speci fi cation. Be on your guard for electrical shocks. Avoid having body contact with light ...
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Husqvarna PG820 - page 5
English - 7 Introduction The Husqvarna PG 680/820 fl oor surfacing machines are designed for wet or dry grinding of marble, terraz- zo, granite and concrete. Their applications range from rough grinding through to a polished fi nish. This manual covers the Husqvarna PG 680/820 series of fl oor grinders equipped with twin motor drive here after r ...
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Husqvarna PG820 - page 6
8 - English What is what 1. Hour counter 2. Electrical cabinet 3. Planetary head motor 1.5kW/1Hp 4. Grinding/Satellite heads motor 1 1kW/15Hp 5. Lifting lugs 6. Cover/Shroud 7. Skirt 8. Chassis/Frame 9. Handle bars 10. Control Panel 1 1. Handle bar adjuster What is what 2. 1. 3. 4. 5. 6. 7. 11 . 10. 9. 8. ...
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Husqvarna PG820 - page 7
English - 9 The machine can be divided into two main parts. These can be identi fi ed as follows: 1. Chassis/Frame section – comprising handle bars, electrical cabinet, steel frame and wheels. 2. Head – comprising of motors, cover , grinding/satel- lite/ planetary heads and internal components. The machine has been manufactured to allow move- ...
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Husqvarna PG820 - page 8
10 - English 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. IMPORT ANT! When using the machine, each grinding head must always have the same diamond type and number of diamonds as the other grind- ing heads. Each grinding head must have diamond ...
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Husqvarna PG820 - page 9
English - 11 Speed and direction setting is often a matter of per- sonal choice. Operators are encouraged to experiment to fi nd which settings best suit the given applications. The following table lists some suggested set-ups for different applications. Application Planetary head direction Planetary head speed Grinding disc direction Grinding dis ...
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Husqvarna PG820 - page 10
12 - English Changing the diamonds As different applications require dif ferent 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 ST OP position as unintentional starting of machine while changing discs can result ...
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Husqvarna PG820 - page 11
English - 13 V ariable speed drives/ frequency converters Each Husqvarna PG 680 & 820 is equipped with 2 variable speed drive or frequency converter . This unit is incorporated into the machine for the following reasons: 1. Functional Manipulate incoming power to enable increase/ decrease in speed & direction change. Regulate current and vo ...
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Husqvarna PG820 - page 12
14 - English 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 Fre- quenc ...
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Husqvarna PG820 - page 13
English - 15 Menus and information they provide The following menu items/screens on the variable speed drive/frequency converters provide the following useful information to the operator . 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 frequ ...
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Husqvarna PG820 - page 14
16 - English Faults and trouble shooting When either one of the variable speed drives or frequen- cy converters in the machine experience a fault and “trip” out, they will cease to run and an error message will ap- pear fl ashing on the keypad display (see picture below). The following list are the most commonly experienced faults and possible ...
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Husqvarna PG820 - page 15
English - 17 Further problems that may be experienced when using the grinder and potential solutions are as follows: Problem Possible Cause Potential Solution GRINDER IS HARD T O HOLD ONTO Not enough diamonds under the machine (if grinding thick glue or soft fl oors, too few diamonds under the machine will greatly increase the load on grinder and ...
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Husqvarna PG820 - page 16
18 - English 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 fi ne the scratches will be that are left behind from the grinding process. 2. A binding agent (metal or resin). Diamond powd ...
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Husqvarna PG820 - page 17
English - 19 Diamond selection The following section covers important factors to consider when selecting the diamond segment you are going to use for a given application. Grinding disc set-up The way diamond segments are set-up on the grinding heads of the machine will also greatly in fl uence the performance of the machine, the productivity level ...
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Husqvarna PG820 - page 18
20 - English Full and half sets of diamonds By changing the way the diamonds are set-up on the diamond holder discs, an operator can signi fi cantly ef- fect the performance of the machine and therefore, the fi nished product. HALF-SET OF DIAMONDS When the diamonds are set-up as a half-set, they tend to follow the surface of the fl oor . Similar ...
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Husqvarna PG820 - page 19
English - 21 Selecting the correct diamonds for your application The following suggestions cover the basic principles for diamond selection for different applications. Application Metal bond Grit size Full- set Half set Singles / T wins Flatten fl oor - Hard concrete SOFT 16 or 30 X S Flatten fl oor - Medium concrete MEDIUM 16 or 30 X S Flatten ? ...
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Husqvarna PG820 - page 20
22 - English 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 &am ...
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Husqvarna PG820 - page 21
English - 23 Maintenance Used correctly , the machine is an extremely low-main- tenance and reliable. This section covers the general maintenance items that need attention on a periodic basis. There are three main mechanical items to check: 1. Grinding Heads. 2. Planetary drive system. 3. Planetary seal. Grinding heads There are 2 different grindin ...
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Husqvarna PG820 - page 22
24 - English Spring Steel Heads The below diagrams illustrate the main parts comprising this type of grinding head. Diagram 1 1. Spring steel spring 2. Head plate 3. Cushion ring 4. Head mate Diagram 2 1. Spring steel springs 2. Bolts 3. Silicone spring 4. Head mate 5. Cushion ring 6. Head buddy 7. Spacers 8. Head plate Between the head plate and h ...
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Husqvarna PG820 - page 23
English - 25 Grinding Heads Drive System The grinder comes equipped with Dual Drive T echnolo- gy™. As the grinding discs are driven by the large mo- tor via an internal belt, and because the belt is sealed inside the machine, there is no maintenance regarding this drive system until a major service (belt and bearing replacement) is due. This is ...
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Husqvarna PG820 - page 24
26 - English 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 below . If planetary seal is worn or needs replacement, contact your Husqvarna Construction Products distributor for a new planetary seal replacement kit. If the planetary seal is wor ...
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Husqvarna PG820 - page 25
English - 27 Maintenance schedule Item Action Frequency Check that head locks are tight. T ighten head locks and re-set in thread-locking com- pound if required (Suggested thread-locking compound Loctite 680) Daily Inspect heads for slop/ broken “ fi ngers” if using spring steel heads. Examine machine heads while machine tipped back. Disconnec ...
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Husqvarna PG820 - page 26
28 - English T echnical Data PG 820 PG 680 Grinding width 820mm (32") 680mm (27") Grinding disc 3x270mm (10.5") 3x240mm (9.5") Weight 440kg (970lbs) 385kg (850lbs) Grinding pressure total 335kg (737lbs) 300kg (660lbs) Grinding pressure per disc 1 12kg (246lbs) 100kg (220lbs) Motor Power 3-Phase 380-480V 12.5kW(17.0hp) 3-Phase 38 ...
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Husqvarna PG820 - page 27
English - 29 EC-declaration of conformity (Applies to Europe only) Husqvarna Construction Products, SE-433 81 Göteborg, Sweden, tel: +46-31-949000, declares under sole responsibil- ity that the Husqvarna PG680/PG820 dating from 2007 serial numbers and onwards (the year is clearly stated on the rating plate, followed by the serial number), complies ...
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Husqvarna PG820 - page 28
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