1. Manuals
  2. Brands
  3. Novag Manuals
  4. Paint Sprayer
  5. III
  6. Service manual

Novag III Service Manual

Proportioning unit
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Service Manual
Proportioning Unit
novaG - III
Issue 2.7 13/02/19
Ref. NR-00002-ENG
Before installing the unit and starting it up, carefully read all the technical
and safety documentation included in this manual. Pay special attention
to the information to know and understand the operation and the
conditions of use of the unit. All of the information is aimed at enhancing
User Safety and avoiding possible breakdowns derived from the incorrect
use of the unit.

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the III and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Novag III

Summary of Contents for Novag III

  • Page 1 Service Manual Proportioning Unit novaG - III Issue 2.7 13/02/19 Ref. NR-00002-ENG Before installing the unit and starting it up, carefully read all the technical and safety documentation included in this manual. Pay special attention to the information to know and understand the operation and the conditions of use of the unit.

  • Page 2: Warranty

    - III Service Manual WARRANTY HI-TECH SPRAY EQUIPMENT (hereinafter “HI-TECH”) provides this LIMITED WARRANTY (hereinafter “Warranty”) to the original purchaser (hereinafter “Customer”) covering this equipment and the original HI-TECH manufactured accessories delivered with the equipment (hereinafter “Product”) against defects in material or workmanship of the Product (hereinafter “Defect”...

  • Page 3: Safety And Handling

    SAFETY AND HANDLING The novaG - III series metering unit has been designed and manufactured in full compliance to the provisions of Machine Directive 89/392/CEE in its modified form and the National Regulations that transpose it.
  • Page 4 - III Service Manual When working with the unit, it is recommended that the operator wear suitable clothing and elements of personal protection, including, without limitation, gloves, protective goggles, safety footwear and face masks. Use breathing equipment when working with the machine in enclosed spaces or in areas with insufficient ventilation.

  • Page 5: Characteristics

    - III Service Manual CHARACTERISTICS The novaG - III metering unit has been designed and built for the application of Polyureas, chemical systems for polyurethane foaming and some two-component epoxy systems. Principal Heating System Consists of two independent heaters without seals. Each heater has four 1500 W heating elements, that give the unit a total power of 6000 W, and the necessary control and safety components for precise operation of the system.

  • Page 6: Technical Specifications

    Maximum hose length for foam: _________________________________________ 93 m / 305 ft Maximum hose length for polyurea: ______________________________________ 78 m / 256 ft Recommended compressor: _________________________________________ 3 HP III phase Approximate weight (hydraulic tank empty): _____________________________ 250 kg / 551 lb...

  • Page 7: General Description

    - III Service Manual GENERAL DESCRIPTION General Description. Figure 7/42 Issue 2.7 Ref. NR-00002-ENG http://www.novag.eu/...
  • Page 8 - III Service Manual Control Panel Controls and regulates the operation of the unit. Isocyanate Metering Pump Meters the Isocyanate. Polyol Metering Pump Meters the Polyol. Isocyanate Pre Heater Heats the Isocyanate to the pre-set temperature. Polyol Pre Heater Heats the Polyol to the pre-set temperature.
  • Page 9 - III Service Manual 16. DIP S1 Selector TPC Probes This sets the hose heating control mode to be selected, depending on whether system includes single Temperature Control Sensor (TCS) for automatic temperature control or no TCS for manual temperature control.

  • Page 10: Control Panel

    - III Service Manual CONTROL PANEL . Control Panel Figure 2 The Control Panel allows the optimum working conditions to be selected and set, depending on the characteristics and requirements of the products to be dispensed. Using the MODE key, the different control parameters may be entered.
  • Page 11 - III Service Manual Main Power Switch Turns the electric supply to the control panel on and off. It must be turned ON for any operation to be performed with the unit. When turned ON, the green pilot at the top of the switch will come...
  • Page 12 - III Service Manual For the data input, the order will be as follows: • Temperature set-point for A (ISO) heater and B or R (POL). • Temperature set-point for A (ISO) hose and B or R (POL). •...
  • Page 13 - III Service Manual Heaters The display shows the temperature in the Isocyanate heater (ISO) and the temperature in the Polyol heater (RESIN). To enter new temperature values, press the MODE key until the respective temperature flashes; select the required temperature by pressing the UP/DOWN keys and press the MODE key to enter the value into memory.
  • Page 14 - III Service Manual Motor Key Pushbutton turns on and off the hydraulic motor. When the key is active, the led in its centre will come on. This may be turned off at will by pressing the key once more, or automatically in the event of overload in the hydraulic motor (alarm 8).

  • Page 15: Alarms

    - III Service Manual ALARMS When the unit has faults caused by conditions affecting its correct operation, an audible alarm will sound and a fault number will show on the COUNTER display. The system does not allow an alarm to be reset until the fault causing the alarm has been corrected. After resetting, the MODE key must be pressed.
  • Page 16 - III Service Manual 10. Fault Ratio Off Tolerance (deactivates the directional valve) • Check the product pressures. • Replace the pressure transducer if there is no reading. • Press the ratio key to cancel the function. 11. 000000 Cycle Pre-selection made (deactivates the directional valve) •...

  • Page 17: Installation

    - III Service Manual INSTALLATION PRECAUTION! Use suitable protection and follow the recommendations in the safety information provided by product suppliers when installing or working with the unit. HI-TECH provides a series of tools and accessories necessary for assembling the machine. The...
  • Page 18 - III Service Manual Make sure the power cable is disconnected from the mains source before connecting it to the terminal strip in the console. b) Load 63 liters (16.6 gal) of hydraulic fluid into the tank of the unit. The oil...
  • Page 19 - III Service Manual The product hoses have been identified with red (Isocyanate) and blue (Polyol), enabling them to be rapidly distinguished. To avoid errors in connecting the coupling connectors of the Isocyanate and Polyol hoses, the connectors are of different sizes to make it impossible for connections to be swapped.
  • Page 20 - III Service Manual The hoses receive vacuum drying treatment and are supplied interconnected at the ends to prevent them from absorbing moisture. Do not separate them until they are going to be installed in the unit. hose connection...
  • Page 21 - III Service Manual g) Install the probe of control of temperature TCS between the last stretch of hose of product and the final stretch connected to the gun. Stretch carefully the cable of the probe inserting it in the Isocyanate hose.
  • Page 22 - III Service Manual Proceed to install the transfer pumps paying special attention to connect each pump to “its” respective product, as changing the pumps would cause a reaction in the products inside them and make them useless. Identifying each pump with a tape of the same color as that of the hoses (blue for the Polyol pump and red for the Isocyanate pump) might be a good method for avoiding errors in connection.

  • Page 23: Start - Up Procedures

    - III Service Manual START - UP PROCEDURES Follow the recommended procedure in the indicated order. PRECAUTION! The start-up procedures assume that all of the necessary adjustments have been correctly performed. a) Check the state of the DOTP plasticizing oil in the lubrication tank of the Isocyanate pump.

  • Page 24: Shutdown Proedures

    - III Service Manual SHUTDOWN PROEDURES Follow the recommended procedure in the indicated order for machine shut down when work is stopped for the day. a) Press the RETRACT key. The led will light. b) Use the gun to project into a waste container until the Isocyanate metering pump is in the retract position and the pressure begins to fall.

  • Page 25: Cleaning

    - III Service Manual CLEANING PRECAUTION! The unit includes components that reach temperatures that are liable to cause burns. The hot parts of the unit must not be handled until they have cooled. To avoid possible contamination, the circuits of the unit must previously be cleaned (pumps, heaters and hoses) whenever applications have to be made that require a change of components.

  • Page 26: Long Term Shutdown Procedures

    - III Service Manual LONG TERM SHUTDOWN PROCEDURES PRECAUTION! The unit includes components that reach temperature that are liable to cause burns. The hot parts of the unit must not be handled until they have cooled. When you plan to shut down the machine for more than five weeks, the products contained in the machine must be replaced by DOTP plasticizing agent.

  • Page 27: Troubleshooting

    Service Manual TROUBLESHOOTING The novaG - III unit has been designed and built to withstand severe working conditions with a high degree of reliability, provided it is used suitably. This chapter contains information on possible faults that may prevent the continuation of work with the unit. The information provided must serve as guideline to detect and resolve the large majority of the problems before calling for the assistance of the authorized distributor or HI-TECH technical service.

  • Page 28: Heaters

    - III Service Manual Heaters WARNING! Before resolving any kind of defect, make sure all of the pushbuttons are off, that the general switch is in shutdown position and that the unit is disconnected from the power supply. Never handle the inside of the control panel with the unit connected to the power supply.
  • Page 29 - III Service Manual To check the state of the element, proceed as follows: With the main switch off check with a tester that reading the total value of the heater resistance is indicated in the table according to the power, voltage and number for each installed heater elements, a higher value would indicate that one or more elements are faulty.

  • Page 30: Hose Heating

    SOLUTIONS Hose Length The novaG - III has been designed to work with a maximum hose length of 93 meters (310 ft). A longer length will render the heating capacity less effective. Under extreme ambient conditions, the hose heating system may be affected and fail to reach the required temperature.
  • Page 31 - III Service Manual Triac This determines that the triac is faulty when all of the previous checks have been correct. Replace the triac if is fails to work correctly. Hose Heating Components With the general switch turned off, make sure the hose connections and the electrical connections between the hoses and the unit are correct and tight.

  • Page 32: Metering Pumps

    - III Service Manual Metering pumps WARNING! Before resolving any kind of defect, make sure all of the pushbuttons are off, that the general switch is in shutdown position and that the unit is disconnected from the power supply source. Never handle the inside of the control panel with the unit connected to the power supply.
  • Page 33 - III Service Manual Proceed as follows to check the valve balls: a) Disconnect the machine from the power supply and close both inlet ball valves and the supply system to the transfer pumps. b) Depressurize the metering pump and remove the corresponding valve ball.
  • Page 34 - III Service Manual a) Determine the direction in which the plate must move; this depends on which micro has been passed. b) Locate the slide for the manual activation of the directional valve in the hydraulic distributor: this is located on the same side of the machine towards which the activation plate must work.

  • Page 35: Hydraulic Unit

    - III Service Manual Hydraulic unit WARNING! Before resolving any kind of defect, make sure all of the pushbuttons are off, that the general switch is in shutdown position and that the unit is disconnected from the power supply. Never handle the inside of the control panel with the unit connected to the power supply.

  • Page 36: Maintenance

    - III Service Manual MAINTENANCE To achieve maximum output from the novaG - III unit, certain daily or regular maintenance operations are needed. To prevent possible bodily harm caused by incorrect handling of the raw materials and solvents used in the process, carefully read the safety information provided by your supplier.

  • Page 37: Heaters

    - III Service Manual Heaters WARNING! Before performing any maintenance work, make sure all of the pushbuttons are off, that the general switch is in shutdown position and that the unit is disconnected from the power supply source. Never handle the inside of the control panel with the unit connected to the power supply.

  • Page 38: Hydraulic Unit

    - III Service Manual Hydraulic unit WARNING! Before performing any maintenance work, make sure all of the pushbuttons are off, that the general switch is in shutdown position and that the unit is disconnected from the power supply. Never handle the inside of the control panel with the unit connected to the power supply.

  • Page 39: Metering Pumps

    - III Service Manual Metering pumps WARNING! Before resolving any kind of defect, make sure all of the pushbuttons are off, that the general switch is in shutdown position and that the unit is disconnected from the power supply source. Never handle the inside of the control panel with the unit connected to the power supply.

  • Page 40: Inlet Supply Filters

    - III Service Manual Inlet supply filters The filter bodies have a filter screen that prevents solid particles from entering the unit. Inspect the filters each day as part of the machine start-up, and clean them. Replace the filter screen if necessary.

  • Page 41: Table Of Contents

    - III Service Manual CONTENT Warranty _____________________________________________________ 2 Safety and Handling ____________________________________________ 3 Characteristics ________________________________________________ 5 Principal Heating System___________________________________________________ 5 Hose Heating System _____________________________________________________ 5 Double Acting Opposed Piston Metering Pumps ________________________________ 5 Technical Specifications ________________________________________ 6 Electrical _______________________________________________________________ 6...

  • Page 42: List Of Illustrations

    - III Service Manual LIST OF ILLUSTRATIONS Figure 1. General Description. ___________________________________ 7 Figure 2. Control Panel ________________________________________ 10 Figure 3. Method of Assembling the Hoses ________________________ 19 42/42 Issue 2.7 Ref. NR-00002-ENG http://www.novag.eu/...

Table of Contents