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OSF-4-BA-e-1510

 

1.4  Maintenance and cleaning 

In any event, the device must be kept clean and dusted regularly. 
If any moisture should be occur, before you wipe down the device you must ensure 
that the mains power is switched off. 

When  glass  components  become  dirty,  the best  way  to  clean  them  is  to  wipe  them 
gently with a lint-free cloth. 

To wipe oil stains or finger prints off the lens surface, moisten the lint free cloth with a 
mixture of ether and alcohol (70 / 30 ratio) and use this to clean the lens. 

You must be careful when handling ether and alcohol, as these are highly flammable 
substances.  You  must  therefore  keep  it  away  from  naked  flames  and  electrical 
devices which can be switched on and off, and only use it in well-ventilated rooms. 

However organic solutions of this type should not be used to clean other components 
of the device. This could lead to damage to the paint finish. To do this, it is sufficient 
to use a neutral cleaning product. 

You could also use the following cleaning products to clean the optical components: 

Special cleaner for optical lenses

Special optical cleaning cloths

Bellows

Brush

When  handled  correctly  and  checked  regularly,  the  microscope  should  give  many 
years of efficient service. 

Should repairs still be necessary, please contact your KERN dealer or our Technical 
Department. 

Summary of Contents for OSF-4

Page 1: ...mbH Ziegelei 1 D 72336 Balingen E mail info kern sohn com Tel 49 0 7433 9933 0 Fax 49 0 7433 9933 149 Internet www kern sohn com User instructions Stereo microscope KERN OSF 4 OSF 430 OSF 431 OSF 434...

Page 2: ......

Page 3: ...ssembly 9 5 Operation and functionality 11 5 1 Getting started 11 5 2 Adjusting the interpupillary distance 11 5 3 Adjusting the magnification 11 5 4 Dioptre adjustment and focussing 12 5 5 Adjusting...

Page 4: ...o the electrical parts in the base of the device must not be tampered with as in this area there is an additional risk of triggering an electric shock 1 2 Notes on the electrical system Before connect...

Page 5: ...older must not be rotated back too far If you do this there is a risk that the microscope could tip over When the microscope is not being used you should fit the objective cap and cover the microscope...

Page 6: ...these are highly flammable substances You must therefore keep it away from naked flames and electrical devices which can be switched on and off and only use it in well ventilated rooms However organi...

Page 7: ...OSF 4 BA e 1510 6 2 Nomenclature Using the OSF 430 as an example...

Page 8: ...7 OSF 4 BA e 1510 Special features of OSF 434 OSF 435 The focus dial has a coarse adjustment knob and a fine adjustment knob...

Page 9: ...d of view mm Objective Stand Illumination OSF 430 Binocular WF 10x 20 mm 20 1x 3x mechanical 1W LED reflected light 0 21W LED transmitted light OSF 431 Binocular WF 10x 20 mm 20 2x 4x mechanical 1W LE...

Page 10: ...epieces are already fitted in the tube You just need to remove the protective film which covers them When doing this make sure that you do not touch the optical lenses with your fingers In general you...

Page 11: ...OSF 4 BA e 1510 10 Assembled stereo microscope...

Page 12: ...e the gap between the two eyepieces must be re adjusted While you are looking through the eyepieces use one hand to hold the righthand or lefthand prism housing firmly By rotating outwards or inwards...

Page 13: ...k through the righthand eyepiece without dioptre adjustment ring with the right eye and bring the object into focus by using the focus control dials 4 Now set the largest magnification 5 Once again st...

Page 14: ...ng observed should collide Torque of the focus wheels OSF 434 OSF 435 You can adjust the torque of the focus wheels by turning the ring which is fitted along the axis of the lefthand focus wheel in a...

Page 15: ...ed by the glasses symbol on the side They are also marked in the item description by an additional H example HSWF 10x 23 mm When fitting the eye cups make sure that the dioptre setting is not moved We...

Page 16: ...application then it often makes sense to fit an external lighting unit to overcome this problem The lighting units which are suitable for devices of the OSF 4 series are goose neck lighting units see...

Page 17: ...7 Features Model outfit Kern model Order number OSF 430 OSF 431 OSF 434 OSF 435 Eyepieces WF 5x 16 2 mm OZB A4101 WF 10x 20 mm OZB A4102 WF 15x 15 mm OZB A4103 WF 20x 10 mm OZB A4104 Stand mechanical...

Page 18: ...ufficient The wrong bulb has been used The input voltage is too low Optical unit Problem Possible causes You can see two images The interpupillary distance is not set correctly The magnifications of t...

Page 19: ...materials which you can dispose of at your local recycling centre Disposal of the storage box and device must be carried out by the operator in accordance with all national or regional laws in force...

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