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Projection Gun novaG-M

Service Manual

26/28

1.5 Issue

Ref. NR-00018-ENG

http://www.novag.eu/

Pneumatic cylinder

WARNING:

Before carrying out maintenance work on the gun, make sure that the unit

has been completely stopped, that all of the push buttons and the main switch are turned
off  and  that  the  unit  is  disconnected  from  the  main  power  supply.  The  gun  is  a
component  which  works  under  pressure.    No  connection  must  be  opened  or
maintenance  work  be  done  on  component  subject  to  pressure  until  the  pressure  has
been completely eliminated.

Figure. 22

1.

Remove the safety device by pressing it and turning it anti-clockwise (see

Figure. 12

, page

13).

WARNING!

Accidentally squeezing the trigger when the gun safety device has been

removed can cause serious injury.

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Summary of Contents for NOVAG novaG-M

Page 1: ...M gun carefully read the technical and safety documentation in this manual Special attention should be paid to the information in order to know and understand the handling and conditions of use of the Unit All of the information is aimed at enhancing User Safety and avoiding possible faults due to incorrect use of the Unit ...

Page 2: ...ifications of the Product not authorised by HI TECH or due to the use of accessories heating devices pumping equipment and or dispensers that have not been approved or manufactured by HI TECH d The guarantee applicable to the components and accessories forming part of the Product and which have not been made by HI TECH will be limited to the guarantee offered by the original manufacturer thereof H...

Page 3: ...ation for alerting you on the situations which could cause serious injury if the instructions are not followed A PRECAUTION establishes information which indicates how to avoid damage to the gun and how to avoid a situation which could cause minor injuries A NOTE is relevant information on the procedure being carried out Careful study of this manual will help you to become more acquainted with the...

Page 4: ...sheet provided by your supplier to prevent any possible injury caused by incorrect handling of the raw materials and solvents used in the process Deal with all waste caused according to current regulations To prevent serious damage caused by the impact of fluids under pressure never open a connection or do maintenance work on components subject to pressure until you are sure that all pressure has ...

Page 5: ...NOVAG entry block fast connecting and disconnecting High pressure internal mixture Mechanical automatic cleaning No solvents required Airless spraying Automatic greasing of the mix chamber Approximate weight 1 4 Kg Dimensions H 20 cm W 10 cm L 21 cm Maximum working temperature ____________________________________________ 90º C Maximum working pressure ____________________________________ 265 bar 2...

Page 6: ... and their description are shown For a more precise identification see the Components Manual ref NR 00017 1 Mixhead 2 Polyol side cartridge unit 3 Iso side cartridge unit 4 Block fixture bolt 5 Polyol manual valve 6 Isocyanate manual valve 7 Entry block fixture bolt 8 Trigger 9 Air flow regulator 10 Safety device 11 Needle adjustment nut blocking screw GENERAL DESCRIPTION ...

Page 7: ... yourself with the parts of the mix head so that you know the part referred to when you read this manual Figure 2 1 Cartridge housing 2 Cartridge seal 3 Filter 4 Non return 5 Diffuser 6 PCD nut 7 PCD 8 Module nut 9 Mixing module 10 Entry block seals 11 Coupling block 12 Rear closing seal 13 Rear closing seal nut 14 Needle 15 Needle adjustment nut ...

Page 8: ...for air connection MA 00027 fast plug RA 00109 fast plug pin RA 00110 drills for cleaning see Components Manual Service Manual NR 00018 and Components Manual NR 00017 1 Completely close the manual valves by turning them clockwise The manual valves control the input flow of each product to the chamber and are located on the Coupling Block 2 Connect the air supply pipe to the connector at the rear o...

Page 9: ...a perfect fan when the remains of the two mixed chemical products are totally eliminated from the mix chamber with the self cleaning needle It is absolutely essential that when the needle closes it makes perfect contact with the internal spherical surface of the PCD To achieve a suitable contact the novaG M Gun has an adjustment system Pay special attention when adjusting for excessive contact can...

Page 10: ...igure 6 9 Make sure that the pressure in the machine and the temperature of the heaters and the hoses are correct see the Machine Service Manual 10 Completely open the manual valves of each product by turning them anti clockwise 11 Press the safety device and turn it anti clockwise to set it to the working position NB The novaG M Gun has two positions one for standstill or blocking and the other f...

Page 11: ... the Unit Standstill Method with the procedure indicated in the Machine Service Manual 2 Completely close the manual valves of each product by turning them clockwise 3 To eliminate the pressure from the gun press the trigger and project with the gun until the projection fan begins to narrow 4 Press the safety device and turn it clockwise to leave it in standstill or blocked position see Figure 8 p...

Page 12: ...olvent If the product holes are blocked clean them with the drills supplied along with the module see Figure 11 Clean the conic housing of the module on the head using paper dampened with gun cleaning solvent Do not use metal elements to clean the conic housing a scratch on the surface could cause it to close badly with the module and this might cause leaks of the chemical products To facilitate t...

Page 13: ...t and turning it anti clockwise 2 Remove the spring in the head of the pneumatic cylinder see Figure 12 3 Turn the closing seal nut anti clockwise until it no longer presses on the seal see Figure 13 Figure 12 Figure 13 4 Insert the end of the socket wrench into the hexagon of the needle and insert a socket in the hexagon of the plunger shaft to prevent it from turning see Figure 14 and Figure 15 ...

Page 14: ...h on the surface could cause it to close badly with the module and this might cause leaks of the chemical products 7 Remove the rear closing seal and clean it with gun cleaning solvent or replace it if it is very worn see Figure 16 8 Clean the conic housing of the seal on the head using paper dampened with gun cleaning solvent Do not use metal elements to clean the conic housing a scratch on the s...

Page 15: ...sing the trigger fit the tightening nut of the module turning it clockwise 8 Screw on the nut by hand as far as possible Now using a socket tighten the nut clockwise Release the trigger and make sure the needle moves forward Squeeze the trigger 2 or 3 times to make sure that the needle moves backward and forward correctly 9 Make sure that the rear closing seal nut it tight if not turn it clockwise...

Page 16: ...t of the PCD clockwise Make sure the groove does not move out of position while tightening 12 Adjust the needle as indicated in point 8 of Installation and Start up see page 9 13 Hand fit the diffuser turning it clockwise 14 Follow the instructions of points 9 to 13 of the Installation and Start up see page 10 and page 11 ...

Page 17: ...ject to pressure until you are sure that all pressure has been eliminated Use suitable protection when operating maintaining or simply being in the area where the equipment is working This includes but is not limited to the use of protective goggles gloves shoes and safety clothes and breathing equipment The equipment includes components which reach high temperatures and may cause burns The hot pa...

Page 18: ...te the pressure from the gun press the trigger and project with the gun until the projection fan begins to narrow 4 Disconnect the air supply from the gun 5 Press the safety device and turn it clockwise to leave it in blocked position see Figure 8 page 10 6 Unscrew the Isocyanate side cartridge by turning it anti clockwise remove it from its housing see Figure 19 Clean the housing with gun cleanin...

Page 19: ...1 Check the cartridge seal Replace it if it is worn or damaged 12 Grease all of the components and refit them in the cartridge 13 Screw the isocyanate cartridge unit into its housing until it blocks Make sure it is correctly tightened to avoid product leaks 14 Do the same with the polyol cartridge 15 Carry out the projection procedure indicated in the section on Installation and Start up see page ...

Page 20: ...The gun is a component which works under pressure No connection must be opened or maintenance work be done on component subject to pressure until the pressure has been completely eliminated Figure 20 To remove the mixing block mixing module and needle do the following 1 Perform the unit Stopping method with the procedure given in the Machine Service Manual 2 Completely close the manual valves of e...

Page 21: ...g with the module Clean the conic housing of the module in the head with paper dampened in gun cleaning dissolvent Do not use metal elements to clean the conic housing a scratch on the surface could cause it to close badly with the module and this might cause leaks of the chemical products To facilitate the removal of the module squeeze the gun trigger 1 or 2 times for the needle to move backwards...

Page 22: ...and tighten it using the tube socket Insert a socket in the hexagon of the plunger shaft to prevent it from turning 25 Fit the spring in the pneumatic cylinder head 26 Fit the safety device Press and turn the device clockwise to set it to its blocking position 27 Fit the non return units and the filter bolt 28 Fix the gun in a support or a vice where it can be held firmly to be able to handle it w...

Page 23: ...ing nut of the PCD by hand turning it clockwise Make sure the groove does not move out of position while tightening 40 Make sure that the length that stands out of the chamber needle is correct otherwise it must be adjusted see Figure 4 page 9 Adjust the needle as indicated in point 8 of Installation and Start up see page 9 41 Fit the diffuser by hand turning it clockwise 42 Fit the seals of the c...

Page 24: ... be done on component subject to pressure until the pressure has been completely eliminated Figure 21 1 Remove the coupling block 2 Use a cloth dampened with solvent to clean the contact surfaces and the seals of the coupling block 3 Disconnect the air hose supply 4 Unscrew the trigger stop bolt see Figure 21 This bolt limits the trigger and also works as a stopper of the air circuit it is importa...

Page 25: ...re not to damage the o rings You will note a certain resistance caused by the interference of the seals with the housing wall Insert it until you see the first rows of the thread 12 Screw down the nut using sealing paste to avoid air leaks Do not tighten excessively 13 Fit the trigger with the screw and hold it with the retention nut 14 Place Teflon on the tip of the bolt limiting the trigger and ...

Page 26: ...ned off and that the unit is disconnected from the main power supply The gun is a component which works under pressure No connection must be opened or maintenance work be done on component subject to pressure until the pressure has been completely eliminated Figure 22 1 Remove the safety device by pressing it and turning it anti clockwise see Figure 12 page 13 WARNING Accidentally squeezing the tr...

Page 27: ...er head see Figure 22 page 26 7 Check the state of the closing seal of the cylinder block Replace it if it is damaged Apply a little grease to make it easier to assemble 8 Pull hard on the plunger to remove the whole unit from the cylinder sleeve Also remove the plunger spring see Figure 22 page 26 9 Check the state of the rod seals and the plunger seal Replace any that are damaged Apply a little ...

Page 28: ...t up ________________________________________ 8 Stopping method _____________________________________________ 11 Installation of the Mixing Module and PCD ________________________ 15 Maintenance _________________________________________________ 17 Side cartridge unit _________________________________________________________ 18 Gun block unit mixing module and needle _______________________________...

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