Instruction/ maintenance manual of the product PG820 Husqvarna
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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.
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 drive.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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).
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 .
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.
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.
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 .
English - 21 Selecting the correct diamonds for your application The following suggestions cover the basic principles for diamond selection for different applications.
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.
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.
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.
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.
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.
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.
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.
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 Husqv.
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An important point after buying a device Husqvarna PG820 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Husqvarna PG820 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Husqvarna PG820 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Husqvarna PG820 you will learn all the available features of the product, as well as information on its operation. The information that you get Husqvarna PG820 will certainly help you make a decision on the purchase.
If you already are a holder of Husqvarna PG820, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Husqvarna PG820.
However, one of the most important roles played by the user manual is to help in solving problems with Husqvarna PG820. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Husqvarna PG820 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
