Hi-Tech NOVAG novaG-M Service Manual

Projection gun

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Service Manual

Projection Gun

novaG-M Model

1.5 Issue 24/03/20

Ref. NR-00018-ENG

Before installing and operating the novaG-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.

Table of Contents

Summary of Contents for Hi-Tech NOVAG novaG-M

Page 1 Service Manual Projection Gun novaG-M Model 1.5 Issue 24/03/20 Ref. NR-00018-ENG Before installing and operating the novaG-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.
Page 2: Warranty
Product has been purchased or the HI-TECH technical service will repair or replace the Product in accordance with what is established in the following...
Page 3: Safety And Handling
Keep this Service Manual for consultation and useful information at any time. If you lose the manual, ask for a new copy from your local HI-TECH distributor or make direct contact with HI- TECH SPRAY EQUIPMENT, S. A.
Page 4 Projection Gun novaG-M Service Manual When working with the gun, it is essential to dress suitably and use personal protection equipment, including the unlimited use of gloves, protective goggles, safety footwear and face masks. Use breathing equipment when working with the gun in enclosed or insufficiently ventilated atmospheres.
Page 5: Characteristics
Projection Gun novaG-M Service Manual CHARACTERISTICS The new novaG-M gun with a mechanical self-cleaning system has been designed for professional appliers, giving a better mixing quality than any other gun on the market in applying Polyureas, chemical systems for polyurethane foaming and some two-component epoxy systems.
Page 6: General Description
Projection Gun novaG-M Service Manual GENERAL DESCRIPTION Figure. 1 For better knowledge of the elements of the novaG-M gun, the main components and their description are shown. For a more precise identification, see the Components Manual ref. NR- 00017. Mixhead Polyol side cartridge unit Iso side cartridge unit Block fixture bolt...
Page 7 Projection Gun novaG-M Service Manual Before continuing with the following procedures, familiarise 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.
Page 8: Installation And Start-Up
HI-TECH provides a series of tools and accessories that are necessary for assembling the gun (KT-00004-00). The unit comprises the following elements: Grease tube (OR-00012), pipe 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).
Page 9 Projection Gun novaG-M Service Manual NOTE: The product hoses have been distinguished with red and blue in order to allow them to be rapidly identified. The red corresponds to the Isocyanate hose and the blue corresponds to the Polyol hose. However, to avoid connection errors, the coupling connectors of the Isocyanate and Polyol hoses are of different sizes to make it impossible to swap the connections.
Page 10 Projection Gun novaG-M Service Manual b. Take the socket and turn the nut (anti-clockwise move needle forward, and clockwise to move it back. Squeeze the trigger of the gun every time you are going to turn the adjustment nut. This will make it easier to turn the nut.
Page 11: Stopping Method
Projection Gun novaG-M Service Manual When it stops projecting, always turn the safety device to the blocking position to avoid any kind of accidental damage when handling the gun. 12. Check the air regulator. Turn it anti-clockwise for an airflow that cleans any remains of product that might be at the tip of the PCD and on the needle.
Page 12 Projection Gun novaG-M Service Manual Remove the diffuser and the PCD nut, turn them anti-clockwise with your hand and clean them with gun-cleaning solvent (see Figure. 9). 10. Remove the PCD and clean it with gun-cleaning solvent (see Figure. 10). Pay special attention in cleaning the interior spherical area.
Page 13 Projection Gun novaG-M Service Manual At the end of the working day, the state of the needle must be checked (See the Maintenance section). Complete steps “1” to “11” above and perform the following operations: Remove the safety device by pressing it and turning it anti-clockwise. Remove the spring in the head of the pneumatic cylinder (see Figure.
Page 14 Projection Gun novaG-M Service Manual Remove the needle and make sure there are no solid parts adhered to the needle, clean with gun-cleaning solvent. Loosen the rear seal nut completely by turning it anti-clockwise (see Figure. 16). Clean the conic housing of the nut with paper dampened in 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.
Page 15: Installation Of The Mixing Module And Pcd
2. Make sure that the conic housing of the mix head is clean and that its surface is not damaged. 3. Put “HI-TECH” grease on the threads of the tightening nut of the module and in the threaded housing of the mix head.
Page 16 Projection Gun novaG-M Service Manual 11. Hand tighten the tightening nut 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.
Page 17: Maintenance
Projection Gun novaG-M Service Manual MAINTENANCE To get the most out of your novaG-M gun, certain periodical maintenance operations must be carried out. Carefully read the safety data sheet provided by your supplier to prevent any possible injury caused by incorrect handling of the raw materials and solvents used in the process.
Page 18: Side Cartridge Unit
Projection Gun novaG-M Service Manual Side cartridge unit 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.
Page 19 Projection Gun novaG-M Service Manual PRECAUTION! Use wooden or plastic utensils or a brass brush for cleaning. Do not use metal utensils that can scratch the surface. 11. Check the cartridge seal. Replace it if it is worn or damaged. 12.
Page 20: Gun Block Unit, Mixing Module And Needle
Projection Gun novaG-M Service Manual Gun block unit, mixing module and needle 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.
Page 21 Projection Gun novaG-M Service Manual Press the safety device and leave it in blocked position. Remove the coupling block. Use a cloth dampened with solvent to clean the contact surfaces and the seals of the coupling block. NOTE: If any of the valves must be replaced due to breakage or deterioration, make sure that they are completely open before mounting on the coupling block (that the sphere is lodged inside the valve body).
Page 22 29. Connect the air supply. 30. Put “HI-TECH” grease on the threads of the module tightening nut and in the threaded housing of the mixhead. 31. Insert the module on the tip of the needle, making sure the metal positioning pin is in line with the non-turning hole of the mixhead.
Page 23 Projection Gun novaG-M Service Manual 38. Fit the PCD on the module and press until the interior side makes contact with the front of the module. If you have fitted a PCD for flat fan, remember to turn the groove to the preferred projecting position (see Figure.
Page 24: Trigger And Valve
Projection Gun novaG-M Service Manual Trigger and valve 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.
Page 25 Projection Gun novaG-M Service Manual Check the valve o-rings. Replace them if they are damaged. Apply a little grease to make it easier to assemble. Make sure the housing is clean and apply a small layer of grease inside. 10. Check the state of the spring, and replace it if it is worn. 11.
Page 26: Pneumatic Cylinder
Projection Gun novaG-M Service Manual 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.
Page 27 Projection Gun novaG-M Service Manual 2. Remove the spring in the pneumatic cylinder head (see Figure. 12, page 13). 3. Insert the end of a socket wrench in the hexagon of the needle and turn it anti-clockwise until the needle is completely unscrewed from its housing (see Figure. 14 and Figure. 15, page 13).
Page 28: Table Of Contents
Projection Gun novaG-M Service Manual CONTENT Warranty _____________________________________________________ 2 Safety and Handling ____________________________________________ 3 Characteristics ________________________________________________ 5 Specifications _________________________________________________ 5 General Description ____________________________________________ 6 Installation and Start-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 ______________________________________ 20...