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 9  Troubleshooting

Fault

Cause

Solution

irregular flow of 
blasting material

too little blasting material in 
container 

re-fill the container 

nozzle on stylus too small

use larger nozzle

blasting material is moist

use blasting material of correct dryness

no flow of blasting 
material

container empty

re-fill the container

main nozzle and/or steel 
hose blocked

use recommended, dry blasting 
material 

unscrew nozzle on the stylus 
trigger blasting process 
blasting material should flow

if necessary, build up 
counterpressure by pressing the 
hose

clean the nozzle (make the stuck 
grains come loose)

if the obstruction persists, use 
compressed air or a needle to 
clean the nozzle

wrong blasting container 

please switch to the correct blasting 
container

chamber nozzle blocked

Contact our Service: 

item no. 190494
(Key for chamber nozzle)
is necessary for dismounting

clean the nozzle (make the stuck 
grains come loose)

if the obstruction persists, use 
compressed air or a needle to 
clean the nozzle

too little pressurised air < 3 
bar

increase pressure 

decreasing and/or 
to low blasting 
pressure

protective filter (item no. 
610039 Small Filter Plate 
D14 X 1.5) blocked and/or 
buckled closed

change filter plate

item no. 610039 
Small Filter Plate D14 X 1.5

If the above recommendations do not solve the problem, contact your dental depot 

or our service department.

Remarks: 

Obstructions normally occur from soiled or lumply blasting material. If the sand 

draws moisture, check the condensator. Please also see page 17, 10.2.8 Water Separator.

11

Summary of Contents for Gobi Classic

Page 1: ...Fine Blasting Unit Gobi Classic USER MANUAL...

Page 2: ...prevent accidents as well as the precautions given in this user manual We are not liable for any damages which occur due to inappropriate usage or faulty operation of this device Make sure that anyone...

Page 3: ...ning 12 10 2 Maintenance Replacing worn Components 13 10 2 1 Sleeve Replacement 13 10 2 2 Screen Replacement 13 10 2 3 LED Replacement 14 10 2 4 Conducting Hose Replacement 15 10 2 5 Nozzle Replaceman...

Page 4: ...stem is continiously under pressure and is therefore always ready for use The relation between air and the blasting material is set at the factory It is determined by the size of the drillings Adjustm...

Page 5: ...ing system Easy choise of the desired blasting material by using the selection switch for colour circuit settings Specially coated safety screen for ideal visibility Optimum workspace illumination pro...

Page 6: ...nd observance of the instructions in this user manual The equipment is designed only for its intended application WARNING Servicing and repairs should be carried out only by authorised specialists Dis...

Page 7: ...ns of Wassermann Dental Maschinen GmbH are not extended by these instructions 4 1 Warranty The warranty period for our equipment is 12 months If faults occur within the warranty period contact your de...

Page 8: ...nd horizontally on a steady and even surface Check the included accessories Install the device in a place where it will not block the working area and the functionality take the dimensions into accoun...

Page 9: ...mum filling capacaty of the chambers which is marked inside the chamber The chambers are only allowed to be filled up to 2 5 cm from the upper chamber edge All chambers are vented by pressing the acco...

Page 10: ...eases Then lock the knob by pressing it down The set pressure can be read via the manometer By varying the pressure the outflow velocity is varied and thus also the amount of blasting material Determi...

Page 11: ...the nozzle wrong blasting container please switch to the correct blasting container chamber nozzle blocked Contact our Service item no 190494 Key for chamber nozzle is necessary for dismounting clean...

Page 12: ...k or removing the lettering The equipment should be cleaned at regular intervals to ensure trouble free operation It requires only normal cleaning sponge damp cloth mild detergent and no further chemi...

Page 13: ...ith gloves The procedure is the same Loosen the connector with pliers and unscrew the throughgrip 4 screws Pull off the old sleeve and put on the new one so that it completely covers the opening Attac...

Page 14: ...ove the lamp cover A by loosen the knurled screws B Resolve the plug connection of the LED power cable Than remove the two screws C by using an Allen wrench Remove the defective LED strip D from the r...

Page 15: ...allation takes place exactly in the reverse manner First put the slotted protective hose over the blasting hose Than insert the hose from the interior of the chamber through the hole in the rear Than...

Page 16: ...ng Material Colour code tank handpiece yellow blue green red Fine blasting nozzle handpiece 0 6 0 8 0 8 1 2 Nozzle tank 1 4 110 m X X Nozzle tank 2 0 110 m X X Aluminium Oxyde 50 m Aluminium Oxyde 110...

Page 17: ...filter block just press lightly and screw it back onto the blasting material container 10 2 8 Water Separator The pressure reducer at the rear of the unit comes with an integrated water separator that...

Page 18: ...pply line 3 core with angle plug 592012 Delivered only on request Supply line 3 core US 13 A 592011 Accessories Spare Parts Item no Extractor nozzle 40 mm exterior 143385 Extractor nozzle 50 mm exteri...

Page 19: ...only to be carried out by qualified technicians Only original spare parts are to be used Responsibility for the product is voided if unauthorised persons alter it or if inappropriate components are i...

Page 20: ...tect the environment prevent environmental pollution and improve the recycling of raw materials the European Commission adopted a directive that requires the manufacturer to accept the return of elect...

Page 21: ...rt wird This is to confirm that the above mentioned machine complies with the described EU rules This declaration becomes invalid if the machine is modified without our approval Cette machine est conf...

Page 22: ...Notes 22...

Page 23: ...23...

Page 24: ......

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