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Rhopoint Instruments MFFT-90 Operating Instructions Manual

Minimum film forming temperature
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Operating Instructions
Minimum Film Forming Temperature
MFFT
Thank you for purchasing this Rhopoint product.
Please read these instructions carefully before operating this product and retain them for future
reference. The images shown in this manual are for illustrative purposes only.
Manufactured by Rhopoint Instruments in the United Kingdom

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Summary of Contents for Rhopoint Instruments MFFT-90

  • Page 1 Thank you for purchasing this Rhopoint product. Please read these instructions carefully before operating this product and retain them for future reference. The images shown in this manual are for illustrative purposes only. Manufactured by Rhopoint Instruments in the United Kingdom...
  • Page 2 © Copyright 2023 Rhopoint Instruments Ltd. All Rights Reserved. Rhopoint MFFT and Rhopoint™ are registered trademarks of Rhopoint Instruments Ltd. in the UK and other countries. Other product and company names mentioned herein may be trademarks of their respective owner.

  • Page 3: Table Of Contents

    Contents Specifications Accessories About the Minimum Film Forming Temperature MFFT Labelled image / functional overview Set-up Instructions Testing Pigmented Emulsions Cleaning Replacing Fuses Troubleshooting EcoMini Chiller Installation MFFT...

  • Page 4: Specifications

    Specifications Conforms to ASTM D 2354, ISO 2115 Platen dimensions 483mm × 235mm (L × W) 4 l min-1 @ 100 psig Water Mains pressure; gravity drain inlet temperature <15°C Mains 110–120V AC or 220–240V AC Order code MFFT, -10˚C to 90˚C 230V - A1212-002 MFFT, -10˚C to 90˚C 115V - A1212-002/115 Dimensions 350mm ×...

  • Page 5: Accessories

    Accessories The MFFT is supplied complete with the following: MFFT instrument • Mains cables • Air connector • Water connectors • Cube applicator 75m x 1” cube • Quantity desiccant • Quantity indicator crystals • Five hypodermic type dispensers • Spare fuses •...

  • Page 6: About The Minimum Film Forming Temperature Mfft

    About the MFFT The “minimum film forming temperature” has been described as “the minimum temperature at which a water borne synthetic latex or emulsion will coalesce when laid on a substrate as a thin film. When this process occurs, in the absence of pigmentation or other opacifying materials, a clear transparent film is formed.

  • Page 7: Labelled Image / Functional Overview

    Labelled image / Functional Overview Label No. Function Pressure valve and dial Mains on and indicator lamps Operating screen Test buttons Mains input Position slider Test plate Air drying crystals Air/water input Flow rate MFFT...

  • Page 8: Set-Up

    Set time and date / Adjust calibration When powering up the instrument press and hold all three buttons on the front of the instrument to adjust time and date settings/ calibration constants. Contact authorised Rhopoint Instruments Agent for more information about instrument calibration.
  • Page 9 Water in is right spigot, left spigot is Water out • Ensure the cover on the test plate is closed • Turn on the mains water supply • DO NOT RESTRICT THE FLOW OF WATER THROUGH THE INSTRUMENT AS THIS CAN LEAD TO FAILURE OF THE COOLING CELLS. THE INSTRUMENT HAS A BUILT IN PRESSURE REGULATOR AND WATER VALVE TO REDUCE WASTE WATER.
  • Page 10 Switch the unit on by pressing the MAINS ON button • The unit will power up, the first screen details the serial number and firmware loaded onto the MFFT • instrument. Press the next button to progress to the main operating screen Use the up and down buttons to or the buttons below the screen to select desired temperature range.

  • Page 11: Performing A Test

    Performing a test Apply emulsion using 75 micron cube applicator from warm end right to cold end left, • or in U-Shaped form starting and finishing right hand side It is useful to apply a control strip using emulsion of known MFFT. Up to 10 single tracks can be applied •...

  • Page 12: Pigmented Emulsions

    Press next to show a results summary page • Move the slider to Print optional results label the MFFT point Pigmented Emulsions The MFFT bar is sometimes used for tests on pigmented emulsion, where the MFFT determination is more difficult because there is no clearly defined change in “colour” of the coalesced film. There is, however, a slight change in the shininess of the surface and using a wooden spatula, lightly scraped on the surface, it is easy to define where the coalesced film stops and where the remaining film is poorly integrated and heavily cracked with very poor adhesion.

  • Page 13: Troubleshooting

    Troubleshooting A loud alarm is emitted from • The instrument has overheated. There are two overheat sensors on the the instrument and the screen MFFT instrument. Turn off the MFFT instrument. Check that the coolant flashes water supply is turned on and that the used water is free to drain. •...

  • Page 14: Ecomini Chiller Installation

    EcoMini Chiller Installation Proceduce Refer to the EcoMini manual for general installation instructions • The below will guide you through the installation of the EcoMini to the MFFT instrument • For best performance, the chiller should be installed on the same bench as the MFFT instrument •...
  • Page 15 Connect other end of the hoses to the Water Supply connectors on the left had side of the MFFT. • Red hose should be connected to IN and blue to OUT connector. Chiller filling procedure Remove the cap from the tank lid on the top of the chiller Fill the tank to leave 10-20mm (0.4-0.8”) of air between water line and where the lid seals.
  • Page 16 Check the application and tubing for signs of leaks whilst the chiller is running Replace the tank lid fully when satisfied the system is full and bled of air • Adjusting the temperature set-point Press the key P then release it and the display will show “SP” •...

  • Page 17: Certificate Of Conformity

    CE Marking requirements of the relevant parts and portions of the specifications listed below. Tested By: 27 February 2012 Marc Dekenah (on behalf of Rhopoint Instruments) Date: Accepted and Logged By: 23 January 2014 Tony Burrows (Managing Director, Rhopoint Instruments)
  • Page 18 Rhopoint Instruments Ltd have arranged a means for our customers to have products that have reached the end of their useful life safely recycled. We encourage all end users to us at the end of the product’s life to return their purchase to as for recycling as per Article 9 of the WEEE Directive.
  • Page 19 Rhopoint Instruments Ltd Rhopoint Americas Inc. Rhopoint Instruments GmbH Rhopoint House, Enviro 21 Park, 1000 John R Road, Seebauer Office Center, Queensway Avenue South, Suite 209, Troy, Am Weiglfeld 24, St Leonards on Sea, TN38 9AG, UK MI 48083, USA...