Lincoln Electric INVERTEC 300 TP Service Manual
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Lincoln Electric INVERTEC 300 TP Service Manual

Lincoln Electric INVERTEC 300 TP Service Manual

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SVM 3136-B
Rev.00 02-2024
INVERTEC
300 TP
®
For use with machines having code numbers: 50613
LINCOLN ELECTRIC EUROPE
www.lincolnelectric.eu

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  • Page 1 SVM 3136-B Rev.00 02-2024 INVERTEC 300 TP ® For use with machines having code numbers: 50613 LINCOLN ELECTRIC EUROPE www.lincolnelectric.eu...

  • Page 2: Table Of Contents

    INDEX OF CONTENTS INDEX OF CONTENTS ............................2 TECHNICAL SPECIFICATIONS ........................3 SAFETY ................................5 INTRODUCTION ..............................7 INSTALLATION AND OPERATOR INSTRUCTIONS ..................7 MAINTENANCE ..............................2 MAJOR COMPONENTS LOCATION ........................ 3 THEORY OF OPERATION ..........................4 INPUT SECTION ..............................5 INVERTER AND OUTPUT SECTIONS ......................

  • Page 3: Technical Specifications

    Technical Specifications NAME INDEX INVERTEC 300TP K14387-1 INPUT Input Voltage U EMC Class 400V +/- 15% 3 phases INVERTEC 1eff 1max 300TP 11.5A 17.2A RATED OUTPUT Duty Cycle 40°C Output Current I (based on a 10 min. period) 100% 230A GTAW 260A 300A...
  • Page 4 If any electromagnetic disturbances are detected the operator must put in place corrective actions to eliminate these disturbances, if necessary with assistance from Lincoln Electric. WARNING Provided that the public low voltage system impedance at the point of common coupling is lower than: •...

  • Page 5: Safety

    Failure to follow the instructions in this manual could cause serious personal injury, loss of life, or equipment damage. Read and understand the following explanations of the warning symbols. Lincoln Electric is not responsible for damages caused by improper installation, improper care or abnormal operation.
  • Page 6 WELDING SPARKS CAN CAUSE FIRE OR EXPLOSION: Remove fire hazards from the welding area and have a fire extinguisher easily accessible. Welding sparks and hot materials from the welding process can easily go through small cracks and openings to adjacent areas. Do not weld on any tanks, drums, containers, or material until the proper steps have been taken to insure that no flammable or toxic vapors will be present.

  • Page 7: Introduction

    Introduction INVERTEC 300TP is a GTAW and SMAW power source Recommended equipment, which can be bought by user, was mentioned in the "Accessories" chapter. The complete package contains: • Power source • USB with operator’s manual • Label Lincoln • 3 meters ground cableGas Hose Installation and Operator Instructions Read this entire section before installation or operating...
  • Page 8 Back panel Controls and Operational Features Front panel Figure 2 1. Gas quick coupling socket: For connecting a gas pipe. Power switch: WARNING The machine allows the use all suitable shielding gases with a maximum pressure of 5 bar. User Interface Figure 1 Output negative socket for the welding circuit Output positive socket for the welding circuit: Socket...
  • Page 9 Main Menu Figure 4 In Main Menu, 3 selections are possible GTAW: allow to enter in TIG Home Menu SMAW: allow to enter in MMA Home Menu Information: Entering in this section allow to the user to configure various parameters of the power source. Home Menu description Primary settings Status Bar...
  • Page 10 Welding GTAW process Figure 8 To select, TIG mode process, select the GTAW icon and push the knob button. Select the arc strike type desired. Home menu Weld sequence configuration Figure 6 Figure 9 1. “Main Menu” access, push this button to go back. Select “Weld Sequence”...
  • Page 11 Pulse Mode TIG Trigger Sequences TIG welding can be done in either the 2-step or 4-step mode. The specific sequences of operation for the trigger modes are explained below. Legend of the symbols used: Torch Pushbutton Output Current Gas Pre-flow Figure 11 Select “Pulse”...
  • Page 12 4-Step Trigger Sequence With the 4-step trigger mode and a TIG welding mode selected, the following welding sequence will occur. As shown above, it is possible to press and hold the TIG 1. Press and hold the TIG torch trigger to start the torch trigger a second time during downslope to end the sequence.
  • Page 13 4-Step Trigger Sequence with Restart Option 4-STEP Bi-Level Trigger sequence If 4-step restart is enabled from the setup menu the following sequence will occur for steps 3 and 4 (steps 1 and 2 are not altered by the restart option): When this sequence is selected, a new icon appears on the right allowing to configure the second level current value.
  • Page 14 When Spot is selected, a new icon will be present for time configuration. Tack For Thin sequence Tack for Thin sequence is very identical to Spot sequence but ramp-up and ramp-down phases of weld sequence are not present. Current directly reaches the welding current.
  • Page 15 Welding SMAW process Figure 13 Figure 16 To select, stick mode process, select the SMAW icon The machine allow the user the use 4 stick mode: and push the knob button. Soft: For a welding with a low spatter presence. Hot Start and Arc Force are pre-defined and can not be Home menu modified...
  • Page 16 Figure 18 Anti-Sticking This feature cannot be modified by user. This is a function that decreases the output current of the machine to a low level when the operator makes an error and sticks the electrode to the work piece. This decrease in current allows the operator to remove the electrode from the electrode holder without creating large sparks that can damage the electrode holder.
  • Page 17 Accessories Accessories and torches configuration can be accessed Amperage UP-DOWN Torch from the Home Menu by pushing knob button and Usable in GTAW only. selected “Remote Control” icon and push knob again. Three operating modes, corresponding to different states of the machine, are identified: Before welding: pressing the UP or DOWN key causes a change of value of the Set current While welding: pressing the UP or DOWN key causes a...
  • Page 18 Memories Welding process and all parameters which belongs to If button is released before the end of saving process, cycle can be saved in a memory slot in order to be slot will not be erased recalled after. “Memories” menu is accessible for both process TIG and Stick process from “Home menu”.
  • Page 19 Guided Setup Guide Setup is a feature which configures automatically Once parameters are modified, the output welding the power source according to a set of input data: current will be automatically adjust to fit with the Type of metal sheet application.
  • Page 20 System menu Parameters configure Power Source parameters, select “Information” icon. A second window will ask you to accept the installation of new software. Push “Confirm” button to start installation workflow. After clicking on “Information”, three lines will be available: Weld Mode Setup Advanced Settings System Information Weld Mode Setup...
  • Page 21 • Always fix the gas cylinder securely in an maintenances, it is recommended to contact the nearest Technical Service Center or Lincoln Electric. Repairs and upright position, against a cylinder modifications performed by unauthorized service or wall rack or purpose-made cylinder personnel will cause, that the manufacturer’s warranty...

  • Page 22: Maintenance

    MAINTENANCE WARNING DC BUS CAPACITORS DISCHARGE PROCEDURE ® 1. Remove input power to the INVERTEC 300TP ELECTRIC SHOCK can kill 2. Remove the side panels following the instruction available in this Service Manual. Have an electrician install and service this equipment 3.

  • Page 23: Major Components Location

    MAJOR COMPONENTS LOCATION ® INVERTEC 300TP 1. Main Switch (S1) 10. HF Transformer 2. EMC Filter Board (R-6042-104-1) 11. Output Current Transducer 3. Fans 12. Control Board 4. Input Rectifier 13. TFT UI Board 5. Preload PCB (Y065-1) 14. HF Board 6.

  • Page 24: Theory Of Operation

    THEORY OF OPERATION 300TP – WIRING DIAGRAM ® INVERTEC GENERAL DESCRIPTION ® The Invertec 300 TP is an inverter based welding Thanks to their IP23 rating and potted boards this power source that offer multi-mode (TIG and Stick) power source can be used in both factory or field constant current welding.

  • Page 25: Input Section

    INPUT SECTION INPUT SECTION When the three phase input voltage 400Vac is applied monitors the input voltage and if all is correct provides ® to the Invertec 300 TP and the input switch S1 is the command to the relay on the Preload board to closed the voltage is applied to the Input EMI filter close bypassing the start resistors.

  • Page 26: Inverter And Output Sections

    INVERTER AND OUTPUT SECTIONS INVERTER AND OUTPUT CIRCUITS, MAIN TRANSFORMER AND OUTPUT SECTIONS The inverter board receives the rectified primary power The output choke provides filtering to enhance the arc from the Preload Board (565Vdc) and it converts this performance and accurate waveform response. power from DC to AC high frequency that is applied to the primary windings of the main welding transformer The current transducer provides an accurate feedback...

  • Page 27: Control Board - Tft Ui & Hf Board

    CONTROL BOARD – TFT UI & HF BOARD CONTROL BOARD AND TFT UI into the Control Board from the 6 pins connector BOARD located on the front of the machine. HF BOARD AND HF TRANSFORMER The Control Board managing all the functions of the machine, a microprocessor is present on it to make the The HF Board generates a set of 97Hz pulses correct operations.
  • Page 28 duty cycle and output rating. If excessive operating OVERLOAD PROTECTION temperature should occur, the Thermal LED indicator on the front panel, will turn ON and the thermostat will ® Invertec 300 TP is electrically protected from prevent output current. producing higher output currents. An electronic protection circuit limits the current to within the The thermal protections are self-resetting once the capabilities of the machine.
  • Page 29 INSULATED GATE BIPOLAR TRANSISTOR (IGBT) OPERATION Drawing B shows the IGBT in an active mode. An IGBT is a type of transistor. IGBTs are When the gate signal, a positive DC voltage semicon-ductors well suited for high frequency relative to the source, is applied to the gate switching and high current applications.

  • Page 30: Troubleshooting And Repair Section

    TROUBLESHOOTING AND REPAIR SECTION ➢ How to use troubleshooting Guide ➢ Troubleshooting Guide ➢ Case cover removal and capacitor discharge procedure ➢ EMI filter board resistance test ➢ Input rectifier resistance test ➢ Inverter board and output diodes resistance test ➢...

  • Page 31: How To Use Troubleshooting Guide

    HOW TO USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory Trained Personnel. Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 32 WARNING NOTE: Allow the machine to heat up so that all electrical components can reach their operating temperature. 5. Remove the replacement PC board and ELECTRIC SHOCK can kill substitute it with the original PC board to recreate the original problem. •...
  • Page 33 PERFORM THE FANS TEST These tests and repair should only be performed by Lincoln Electric Factory Trained Personnel. Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please...

  • Page 34: Case Cover Removal And Dc Bus Capacitor Discharge Procedure

    DISCHARGE PROCEDURE WARNING Service and repair should be performed only by Lincoln Electric factory trained personnel.Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.

  • Page 35: Invertec 275Tp - Side Panels Removal

    ® INVERTEC 300TP - SIDE PANELS REMOVAL Bottom view Procedure: 1. Turn ON/OFF switch to OFF position. 2. Disconnect Input Power from the machine ! 3. Using the TORX wrench TX-25 driver, remove the 4 screws (A) on the bottom of machine 4.

  • Page 36: Dc Bus Capacitors Discharge Procedure

    DC BUS CAPACITORS DISCHARGE PROCEDURE DC BUS CAPACITORS DISCHARGE WARNING PROCEDURE ® 1. Remove input power to the INVERTEC 300 TP 2. Remove the side panels following the instruction available in this Service manual. ELECTRIC SHOCK can kill 3. Obtain a high resistance and high wattage resistor (25-1000 ohms and 25 watts minimum).

  • Page 37: Emi Filter Board Resistance Test

    EMI FILTER BOARD RESISTANCE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 38 EMI FILTER BOARD RESISTANCE TEST (continued) Figure 2 EMI FILTER BOARD Figure 2a TEST PROCEDURE Use always electrically insulate gloves during this test procedure ® 1. Remove main input power to the INVERTEC 300 TP 2. Perform the Side Panels removal and Discharge procedure 3.

  • Page 39: Input Rectifier Resistance Test

    INPUT RECTIFIER RESISTANCE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 40 INPUT RECTIFIER RESISTANCE TEST (continued) DC - DC + Figure 3 – Input Rectifier Bridge location and Test Points TEST PROCEDURE Use always electrically insulate gloves during this test procedure 1. Remove main input power to the INVERTEC ® 300 TP. 2.

  • Page 41: Inverter Board And Output Diodes Resistance Test

    INVERTER BOARD AND OUTPUT DIODES RESISTANCE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty.
  • Page 42 INVERTER BOARD AND OUTPUT DIODES RESISTANCE TEST (continued) Figure 4 – Inverter Board location and Test Points TEST PROCEDURE Use always electrically insulate gloves during this test procedure ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Side Panels removal and Discharge procedure 3.
  • Page 43 INVERTER BOARD AND OUTPUT DIODES RESISTANCE TEST (continued) Figure 5 – Output Diodes location and Test Points TEST PROCEDURE Use always electrically insulate gloves during this test procedure 1. Remove main input power to the INVERTEC ® 300 TP. 2. Perform the Side Panels removal and Discharge procedure 3.

  • Page 44: Gas Solenoid Coil Resistance Test

    GAS SOLENOID COIL RESISTANCE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 45 GAS SOLENOID COIL RESISTANCE TEST (continued) Figure 6 – Switch board J26 location TEST PROCEDURE Use always electrically insulate gloves during this test procedure ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Side Panels removal and Discharge procedure 3.

  • Page 46: Thermal Protection Resistance Test

    THERMAL PROTECTION RESISTANCE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 47 THERMAL PROTECTION RESISTANCE TEST (continued) (NTC1) (NTC2) Figure 7 – NTC Thermal sensor connector location TEST PROCEDURE Use always electrically insulate gloves during this test procedure ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Side Panels removal and Discharge procedure 3.

  • Page 48: Output Studs Resistance Test

    OUTPUT STUDS RESISTANCE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 49 OUTPUT STUDS RESISTANCE TEST (continued) Positive Stud Negative Stud Figure 8 – Output studs location TEST PROCEDURE Use always electrically insulate gloves during this test procedure ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Side Panels removal and Discharge procedure 3.

  • Page 50: Emi Filter Board Voltage Test

    EMI FILTER BOARD VOLTAGE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 51 EMI FILTER BOARD VOLTAGE TEST (continued) Figure 9 EMI FILTER BOARD Figure 9a TEST PROCEDURE Use always electrically insulate gloves during this test procedure ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Side Panels removal and Discharge procedure available in this Service Manual ®...

  • Page 52: Input Rectifier Voltage Test

    INPUT RECTIFIER VOLTAGE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 53 INPUT RECTIFIER VOLTAGE TEST (continue) DC - DC + Figure 10 – Input Rectifier Bridge location and Test Points TEST PROCEDURE Use always electrically insulate gloves during this test procedure 1. Remove main input power to the INVERTEC ® 300 TP. 2.

  • Page 54: Preload Board Voltage Test

    PRELOAD BOARD VOLTAGE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 55 PRELOAD BOARD VOLTAGE TEST (continued) Figure 11 – Preload Board location and Test Points TEST PROCEDURE Use always electrically insulate gloves during this test procedure ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Side Panels removal and Discharge procedure available in this Service Manual ®...

  • Page 56: Aux. Power Supply Board Voltage Test

    AUX. POWER SUPPLY BOARD VOLTAGE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty.
  • Page 57 AUX. POWER SUPPLY BOARD VOLTAGE TEST (continue) LED5 LED2 LED1 LED3 LED4 Figure 12 – AUX. Power Supply Board location and Test Points TEST PROCEDURE WARNING: Black heatsink in on primary side: Do not touch it. Use always electrically insulate gloves during this test procedure ®...

  • Page 58: Inverter And Output Board Voltage Test

    INVERTER AND OUTPUT BOARD VOLTAGE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty.
  • Page 59 INVERTER AND OUTPUT BOARD VOLTAGE TEST (continue) Figure 13 – Inverter Board location and Test Points TEST PROCEDURE Use always electrically insulate gloves during this test procedure ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Side Panels removal and Discharge procedure available in this Service Manual 3.

  • Page 60: Control Board Voltage Test

    CONTROL BOARD VOLTAGE TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 61 CONTROL BOARD VOLTAGE TEST (continue) Figure 14 – Control Board location and Test Points LED1 LED6 LED5 LED2 LED7 LED8 LED4 LED9 LED3 TEST PROCEDURE Use always electrically insulate gloves during this test procedure ® 1. Remove main input power to the INVERTEC 300 TP.
  • Page 62 CONTROL BOARD VOLTAGE TEST (continue) Figure 15 – Control Board location and Test Points TEST PROCEDURE Use always electrically insulate gloves during this test procedure 1. Remove main input power to the INVERTEC ® 300 TP. 2. Perform the Side Panels removal and Discharge procedure available in this Service Manual ®...

  • Page 63: Disassembly Operations

    DISASSEMBLY OPERATIONS UPPER AND REAR PLASTIC PANEL REMOVAL PROCEDURE WARNING Disconnect input power before servicing. Do not operate with covers removed. Do not touch electrically live parts. Only qualified persons should install, use ELECTRIC SHOCK or service this equipment. CAN KILL Figure 17 Figure 16 Figure 18...
  • Page 64 DISASSEMBLY OPERATIONS EMI FILTER REMOVAL AND REPLACEMENT PROCEDURE WARNING B4, B5, B6 Disconnect input power before servicing. (OUTPUT) Do not operate with covers removed. Do not touch electrically live parts. Only qualified persons should install, use ELECTRIC SHOCK or service this equipment. CAN KILL Figure 19 B1, B2,...
  • Page 65 DISASSEMBLY OPERATIONS PRELOAD BOARD REMOVAL AND REPLACEMENT PROCEDURE Figure 21 Figure 22 REMOVAL PROCEDURE Necessary tools: Screwdriver PH02 Socket wrench 7mm ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Discharge procedure. 3. Locate the Preload Board. See Figure 21 4.
  • Page 66 DISASSEMBLY OPERATIONS INPUT RECTIFIER BRIDGE REMOVAL AND REPLACEMENT PROCEDURE Figure 23 Figure 24 REMOVAL PROCEDURE Necessary tools: Screwdriver PH02 ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Discharge procedure. 3. Locate the Input Rectifier Bridge. See Figure 23 4.
  • Page 67 DISASSEMBLY OPERATIONS INVERTER AND OUTPUT BOARD REMOVAL AND REPLACEMENT PROCEDURE WARNING Disconnect input power before servicing. Do not operate with covers removed. Do not touch electrically live parts. Only qualified persons should install, use ELECTRIC SHOCK or service this equipment. CAN KILL Figure 25 Figure 26...
  • Page 68 DISASSEMBLY OPERATIONS AUXILIARY POWER BOARD REMOVAL AND REPLACEMENT PROCEDURE WARNING Disconnect input power before servicing. Do not operate with covers removed. Do not touch electrically live parts. Only qualified persons should install, use ELECTRIC SHOCK or service this equipment. CAN KILL Figure 29 Figure 30 REMOVAL PROCEDURE...
  • Page 69 DISASSEMBLY OPERATIONS CONTROL BOARD REMOVAL AND REPLACEMENT PROCEDURE Figure 31 REMOVAL PROCEDURE Necessary tools: Socket wrench 7mm ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Discharge procedure. 3. Locate the Control Board. See Figure 31 4.
  • Page 70 DISASSEMBLY OPERATIONS UI-TFT BOARD REMOVAL AND REPLACEMENT PROCEDURE Figure 32 Figure 33 Figure 34 REMOVAL PROCEDURE Necessary tools: 5,5mm wrench 2mm allen wrench 10mm wrench ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Discharge procedure. 3.
  • Page 71 DISASSEMBLY OPERATIONS HF BOARD REMOVAL AND REPLACEMENT PROCEDURE Figure 35 Figure 36 REMOVAL PROCEDURE Necessary tools: 5,5mm jointed screwdriver ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Discharge procedure. 3. Locate the HF Board. See Figure 35 4.
  • Page 72 DISASSEMBLY OPERATIONS ON/OFF SWITCH REMOVAL AND REPLACEMENT PROCEDURE Figure 38 Figure 37 Figure 39 REMOVAL PROCEDURE Necessary tools: Screwdriver PH02 ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Discharge procedure. 3. Locate the ON/OFF switch on the backside of the machine. See Figure 37 4.
  • Page 73 DISASSEMBLY OPERATIONS GAS SOLENIOD REMOVAL AND REPLACEMENT PROCEDURE Figure 40 Figure 41 REMOVAL PROCEDURE Necessary tools: 17mm wrench ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Discharge procedure. 3. Locate the Gas solenoid on the internal backside of the machine. See Figure 40 4.
  • Page 74 DISASSEMBLY OPERATIONS FANS REMOVAL AND REPLACEMENT PROCEDURE Figure 43 Figure 42 Figure 44 Figure 45 Figure 46 REMOVAL PROCEDURE Necessary tools: PH02 screwdriver TX25 wrench 7mm wrench ® 1. Remove main input power to the INVERTEC 300 TP. 2. Perform the Discharge procedure. 3.
  • Page 75 DISASSEMBLY OPERATIONS FANS REMOVAL AND REPLACEMENT PROCEDURE (CONTINUE) Figure 47 Figure 48 Figure 49 Figure 50 11. Using the TX25 wrench remove the 2 screws (F) on the bottom of the machine, See Figure 47 12. Using the PH02 scredriver remove the screw (G). See Figure 48 13.

  • Page 76: Retest After Repair

    RETEST AFTER REPAIR Should a machine under test be rejected for any reason requiring the removal of any mechanical part that could affect the machine’s electrical characteristics, or if any electrical components are repaired or replaced, the machine must be retested.

  • Page 77: Electrical Schematics

    ELECTRICAL SCHEMATICS ® Schematic Diagram: INVERTEC 300TP...

  • Page 78: Error Codes

    ERROR CODES Security Description Manufacturer specific Error code Primary Over Current =331 Secondary Over Current (short average) Secondary current probe failure Power Supply Over Voltage =341 Power Supply Under Voltage =342 Preload Time Out =337 Primary Over Power =338 Primary Thermal Secondary Thermal Cooler =266...

  • Page 79: Note

    NOTE...

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