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ESTechnical T962 Upgrade

Reflow oven controller
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ESTechnical Reflow Oven Controller Upgrade T962

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  • Page 1: Table Of Contents

    ESTechnical Reflow Oven Controller Upgrade T962 Table of Contents Instructions for fitting ESTechnical Reflow Oven Controller to T962 .......... Installation procedure ......................Reflow Controller Installation Troubleshooting ..............ESTechnical Reflow Oven Controller Operating Instructions ............ Initial Set Up ......................... Overview of Operation ......................
  • Page 2 ESTechnical Reflow Oven Controller Upgrade T962 2 of 2...

  • Page 3: Instructions For Fitting Estechnical Reflow Oven Controller To T962

    Instructions for fitting ESTechnical Reflow Oven Controller to T962 www.estechnical.co.uk cservices@estechnical.co.uk Thank you for your purchase of ESTechnical products. If you have any questions or comments please let us know, we are always keen to hear feedback about our products. Optional parts...
  • Page 4 ESTechnical Reflow Oven Controller Upgrade T962 computer. With the jumper open, the MCU will not automatically reset when the serial port is opened by a computer - this is more convenient in normal operation and we suggest that you operate the controller with the jumper open.
  • Page 5 ESTechnical Reflow Oven Controller Upgrade T962 Remove the marked screws < Being very careful not to pull on any cables, carefully lift the back of the lid a little, then gently slide the lid forwards a little, lift off the oven, turn over and place it next to the bottom half of the oven.<...
  • Page 6 ESTechnical Reflow Oven Controller Upgrade T962 All connections unplugged (note that the oven shown in the photo is the larger T962A) < Completely remove the control board and display and set aside – these items are no longer needed. Original controller and display removed (note that the oven shown in the photo is the larger T962A) <...
  • Page 7 In order to fit the ESTechnical Reflow Oven Controller to the case, one of the four fan mounting bolts may need to be removed (two or more designs of T962 lid exist) as it may foul on the edge of the LCD display.
  • Page 8 ESTechnical Reflow Oven Controller Upgrade T962 Diagram 1 – Connector locations < Grind/file/sandpaper away the powder coated covering until you reach bare metal around one screw hole on the rear of the lid. This provides an earth connection to the back panel.
  • Page 9 ESTechnical Reflow Controller. Make sure you observe the polarity of the thermocouple, it has one lead marked red (this is positive, marked + on the board) and the other is blue (-).< Screw down the ESTechnical Reflow Controller using the supplied M3 x6mm bolts – do not over tighten.<...
  • Page 10 ESTechnical Reflow Oven Controller Upgrade T962 Keypad connection < Identify the cable that connects to the panel LEDs, plug this onto the pins labeled 'LEDs' on the ESTechnical Reflow Oven Controller. LEDs connection < 8 of 29...
  • Page 11 DC Cooling fan connection < At this point your ESTechnical Reflow Controller should look like the following photo. The ESTechnical Reflow Controller mounted in the T962A oven lid (the oven lid layout is similar but not identical to T962) <...
  • Page 12 ESTechnical Reflow Oven Controller Upgrade T962 this shows the board once the thermocouple connectors have been de-soldered.< Now you need to separate the Triac board from the old controller board. Using a hacksaw and with the old controller PCB held gently in a vice by the edges, saw across the PCB to separate the two parts of the old controller.
  • Page 13 ESTechnical Reflow Oven Controller Upgrade T962 Cut the track where marked in red. < Identify the six pads near the white MOC3021 ICs, the top two are the heater control input, the next two are the fan control input. The last pair of holes should be ignored.<...
  • Page 14 PCB.< Connect the signal leads for the heater and fan control to the terminals on the ESTechnical Reflow Controller, the polarity must be observed, pins 1 and 3 of the terminal on the Triac board are the positive inputs, 2 and 4 negative.<...
  • Page 15 ESTechnical Reflow Oven Controller Upgrade T962 Unscrew the bolt securing the earth cable to the panel, remove the earth connection and refit the bolt. Original earth connection < Being careful not to damage the cables, drill a 3.5mm or 4mm hole near the mains inlet.<...
  • Page 16 ESTechnical Reflow Oven Controller Upgrade T962 Earth bolt location and lid screw hole prepared on the inside of the panel < Also prepare the area around the screw hole which matches up with the screw hole on the lid, prepared earlier. This ensures the lid and the back panel are well connected to the electrical earth.<...
  • Page 17 Test the earth connection resistance is lower than 1 Ohm. < The masking tape in the T962 should be removed and replaced using kapton tape (not supplied). Heating the masking tape with a hair dryer helps soften the tape and adhesive and makes it easier to remove.
  • Page 18 ESTechnical Reflow Oven Controller Upgrade T962 Thermocouple bent towards front of the oven < Identify the mains supply cable with the three pin header plug (only two wires are populated). Plug onto the connection for the Triac board on the three pin header.
  • Page 19 ESTechnical Reflow Oven Controller Upgrade T962 The connectors (left to right) are; Mains supply, heater (note thicker wires than the connector on the right), fan (note thinner wires) < Identify the heater cable, connect this to the heater connector on the Triac board, this is the two pin header next to the main input.

  • Page 20: Reflow Controller Installation Troubleshooting

    Press OK, Idle Speed will display on the screen; Press OK to edit; As a guide, the T962 requires a very low setting (6-10) we advise 8 as a starting point, whereas the T962A requires a value of around 35 (this is the default setting for the ESTechnical Reflow Controller, so it is important you update this value and save it).<...

  • Page 21: Estechnical Reflow Oven Controller Operating Instructions

    ESTechnical Reflow Oven Controller Operating Instructions Caution ESTechnical accept no responsibility or liability for personal injury or damage to property – it is the user's responsibility to correctly carry out installation and confirm the correct operation of the oven once installed.

  • Page 22: Overview Of Operation

    ESTechnical Reflow Oven Controller Upgrade T962 Place the Reflow Oven on a hard, level, heat resistant surface Attach the power cable to the reflow oven and plug in to a power outlet Ensure none of the grilles on any panel are covered...

  • Page 23: Reflow Profile Testing

    Save Factory Reset Reflow Profile Testing The ESTechnical Reflow Oven Controller is equipped to make setting up reflow profiles easy – it is essential to carry out this testing correctly to ensure correct profile settings are used for your board(s).
  • Page 24 ESTechnical Reflow Oven Controller Upgrade T962 once a suitable reflow profile has been set up to ensure the peak temperature is not exceeding the manufacturer's stated limits. Small boards with few parts are often easy to profile correctly with no parts present, as the parts comprise a very small amount of the overall mass of the board.
  • Page 25 ESTechnical Reflow Oven Controller Upgrade T962 Apply heatsink compound to the thermocouple tip Apply a thin strip of kapton tape over the thermocouple wires, very close to but not touching the tip of the thermocouple. Ensure this is well stuck down and the tip is making good contact with the PCB.

  • Page 26: Data Logging - Reflowviewer Software

    Profile testing can be carried out by carefully watching the temperature reported for the PCB thermocouple, or by logging the data via the USB port and using the ESTechnical reflowViewer software (see below). Alternatively it is possible to use an external thermocouple meter to monitor the PCB temperature.

  • Page 27: Loading A Saved Reflow Profile

    Navigate to Fan settings in the menu. Press OK, Idle Speed will display on the screen. Press OK to edit. (The default value for the fan idle speed in T962A / T962A+ is 35, for the T962 the default is 15.) Test this idle speed by starting a reflow cycle, the fan should start up easily but not run so fast...

  • Page 28: Profile Tuning Tips

    ESTechnical Reflow Oven Controller Upgrade T962 Fan idle speed value and ensure it is saved. Profile tuning tips To get the best from your reflow oven, it is advisable to perform a series of tests to determine the settings required to properly reflow each design of board you work with. Boards of different masses will behave differently and may require different soak duration, temperatures etc.

  • Page 29: Care And Maintenance

    Ensure that the duration of the Time Above Liquidous is appropriate for your solder paste and parts. Care and Maintenance ESTechnical recommend the following care and maintenance should be carried out at the intervals specified in order to get the best performance and longest useful life-span from your reflow oven. Before every use Check that the oven has adequate air flow around it and that no grilles are covered.

  • Page 30: Packing List

    ESTechnical Reflow Oven Controller Upgrade T962 Packing list 1x ESTechnical Reflow Oven Controller PCB with LCD display 4x 8mm M3 stand-offs – male to female threads 4x M3 6mm bolts 1x M3 8mm bolt with nyloc nut 2x 30cm two pole signal cable with 2.54mm pitch header connector to bare ends, integral 820R...
  • Page 31 ESTechnical Reflow Oven Controller Upgrade T962 hereby declare that: Equipment: ESTechnical Reflow Oven Controller when installed and operated as per the supplied instructions the equipment named above complies with all applicable Essential Requirements of the Directives. Signed by: Ed Simmons...

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