Sherwood M501 User Manual Contents Introduction Customer Service …………………………………... Using this Manual …………………………………… 6 Safety Instructions …………………………………… 6 Safe use of Instrument …………………………… 7 Setting up the Instrument …………………………… 7 Instrument Description …………………………… 8 Drying Tubs and Accessories …………………… 10 Special notes on accessories ……………………...
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Sherwood M501 User Manual Computer Control Introduction ……………………………………………………. 25 Computer Requirements ……………………………………. 25 Loading the Application Software ……………………………. 26 Connecting to a Computer ……………………………………. 26 Using the Program ……………………………………………. 27 Creating a New Program ……………………………………. 28 Program Number ……………………………………………. 28 Next Program …………………………………………….
Introduction Customer service Thank you for purchasing the M501 Fluid Bed Dryer from Sherwood Scientific Ltd. If you need spare parts or service please contact your local distributor in the first instance, or Sherwood Scientific Ltd office at the address below: - Sherwood Scientific Ltd.
Dimensions and characteristics are not to be considered binding and may be changed without prior notice. The user is responsible for updating the manual with any bulletins from Sherwood Scientific Ltd and to reflect any changes or modifications made by the customer.
Safe Use of Instrument Sherwood Scientific Ltd makes every possible effort to ensure that the instruments it supplies are designed and constructed to be safe and without risk to health or property when used properly. In accordance with relevant EU Directives, they are marked with the CE symbol to indicate they comply with all relevant European safety and hygiene requirements.
Sherwood M501 User Manual Chapter 1 Introduction continued Instrument Description The dryer is of simple, compact design, conveniently portable and easy to operate, the only requirement being a mains power supply. The source of power should be within the reach of the instrument lead so that no extension wires are required.
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Sherwood M501 User Manual Chapter 1 Introduction continued To facilitate the addition of a sample a side port is provided having a sealing screw cap. In addition to an inlet temperature probe, which is part of the thermostat control, a temperature / humidity probe is also available for the outlet of the tub assembly.
Sherwood M501 User Manual Chapter 1 Introduction continued DRYING TUBS and ACCESSORIES The 5 Litre Sealed Glass Tub having a sample port and a sensor port is the standard tub assembly for the M501. It allows full utilisation of the analytical, data capture and storage, and programming control feature on the dryer.
Many of the main advantages of fluid bed drying may be lost. If in doubt, Sherwood offers to do an initial study on your sample which will ensure proper accessories are chosen for the application.
Sherwood M501 User Manual Chapter 1 Introduction continued THE INSTRUMENT COMPONENTS Like our other instruments in the fluid bed dryer range, the M501 incorporates an electrical heater, temperature controller, timer and a powerful air blower fan. There are, however, significant improvements over previous models.
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Sherwood M501 User Manual Chapter 1 Introduction Continued Warning! When Operating a Dryer above 65° C we recommend maki ng a copy of the following warning sign so that it can be displayed next to the instrument and tub assembly.
Sherwood M501 User Manual Chapter 1 Introduction Continued Applications The wide range of materials that can be dried includes fine powders, coarse particles, crystals, granules, slurries or pastes (after decanting, or pre-drying or by spraying into bed of initially dried material). Samples with moisture content up to 80% such as some polymers, dyestuffs and molecular sieves can also be dried with the provision that they remain solid in nature at these high moisture levels.
Sherwood M501 User Manual Chapter 1 Introduction Continued Basic Principles of Fluidised Beds When a stream of gas is passed upwards through a bed of material at a certain velocity the bed will first expand, then become suspended and agitated by the gas stream to form a fluidised bed.
Sherwood M501 User Manual Chapter 1 Introduction Continued The process can be conducted at relatively low temperatures and there is little abrasion, since the particles are separated by air bubbles. The drying process can be analysed to show the amount of internal and external moisture. When external moisture is removed, drying can be conducted quickly, since the temperature is kept low by the evaporation of water.
Sherwood M501 User Manual Chapter 2 Manual Operation Manual operation: - Overview The M501 Fluid Bed Dryer has been designed to make reproducible drying easy. The instrument should be connected to the power source and turned on from the mains switch on the back of the instrument.
Sherwood M501 User Manual Chapter 2 Manual Operation continued Setting the Conditions In standby mode, the variables of time, inlet temperature and blower speed can be set prior to running the instrument. There are symbols indicating the four sections. A...
2 and 127%, which is displayed. (The blower setting above 100% is extra power only available in manual mode and not particularly well calibrated for flow rate, ask your Sherwood Scientific representative how to access this. The blower speed below 10% is also considered less accurate in its correlation to an absolute flow rate).
Sherwood M501 User Manual Chapter 2 Manual Operation continued Section 4 Starting and Stopping the Dryer. The dryer can be turned on, to operate according to its pre-set conditions, by pressing the green switch below the power light. Section 4 Pressing the red switch stops the dryer operation and displays the last set values.
Sherwood M501 User Manual Chapter 2 Manual Operation continued Operating Manually General Several conditions can be modified during a drying procedure. While operating the M501, the timer counts down from the set time. It cannot be altered by pressing the (+) and (-) buttons. The timer function can, however, be turned off by holding down the icon button.
Sherwood M501 User Manual Chapter 2 Manual Operation continued Optional Extras There are two instrument options, the first is the Humidity Temperature Probe and the second is a Pulse Flow Device. Both options are easily retrofitable and can be added on after purchasing the basic unit.
Sherwood M501 User Manual Chapter 2 Manual Operation continued Installing a Pulse Flow Device The picture of the back of the instrument on page 17 shows a pulse flow device installed in the photograph with the stainless steel filter removed. The illustration indicates a stainless steel filter on a pulse flow device.
Sherwood M501 User Manual Chapter 2 Manual Operation continued Running a Stored Program in Manual Mode The M501 is able to store a program containing up to 16 steps, each having pre-set operational conditions. To load the stored program into the unit, the operator must locate a “hidden”...
Sherwood M501 User Manual Chapter 3 Computer Control Introduction To fully utilise the facilities available on the M501 requires the M501 Software (501 86 700) and Interface Cable (926 09 052) and a computer. With computer interface, the M501 Software will allow drying procedures to be written which will guide the Dryer through an unlimited number of drying stages.
Sherwood M501 User Manual Chapter 3 Computer Control continued Loading the Application Software The M501 can be supplied with a CD containing the Application Software for driving the instrument. To install, place the CD in the disc drive of the computer and go to the START / RUN / Use the Browse button to locate the file Setup.exe on the CD.
Sherwood M501 User Manual Chapter 3 Computer Control continued Using the Program Go to Start, Programs and select the “Fluid Bed Dryer Controller”. The above screen opens offering the following options: - On the top left of the screen, the operator can select Exit. Clicking the mouse on this option introduces a “Close Down”...
Sherwood M501 User Manual Chapter 3 Computer Control continued Create a New Program Choosing this option calls up a menu screen which allows the user to choose the conditions for each step of a multi-step drying procedure. The choice of the options and the number of steps are the basics to writing a Program.
Sherwood M501 User Manual Chapter 3 Computer Control continued Next Program A program has the option of continuing on to another program after completing its final step. By clicking on the button near to the Next Program window, existing programs are shown and the desired one can be selected and clicked. The follow-on program number should now appear in the Next Program window.
Sherwood M501 User Manual Chapter 3 Computer Control continued Heater enabled Checking the heater box sets the temperature control for the step. The temperature can be set from 20 degrees to 199.0 degrees Centigrade. The temperature setting may not be reached if too short a time is set for the step. Similarly, temperatures over 150 deg C may be difficult to achieve at high air flow rates, particularly when the power source is at a low voltage.
Sherwood M501 User Manual Chapter 3 Computer Control continued Pulser Unit This function can only be activated if the Pulser Unit is installed (see page 23) and is turned on at the pulser on the back of the instrument (see page 17). A complete pulser cycle is 2.5 seconds.
Sherwood M501 User Manual Chapter 3 Computer Control continued Editing a Program. The program displayed can be edited by first enabling a step and then modifying its parameters. Disabled steps can be eliminated by selecting the Renumber button located on the lower right of the menu screen.
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Sherwood M501 User Manual Chapter 3 Computer Control continued A detailed explanation of the above Program Chart follows: The Chart shows the Blower Fan speed (in green) and the tub sensor reading of relative Humidity (in orange). The scales for these parameters are read off the left side of the Y-axis and range from 0 to 100 %.
Sherwood M501 User Manual Chapter 3 Computer Control continued Load Existing Program A program can be recalled from the start up screen, shown on page 27 as one of the options offered, i.e. LOAD EXISTING PROGRAM. By clicking the mouse on that option, a list of Programs appear in order of their Number.
Sherwood M501 User Manual Chapter 3 Computer Control continued Collecting and Storing Data When a Program Menu is being displayed, having been just written or having been recalled from memory, the operator can Execute it to start a drying procedure. On doing so, a small Dialog Box appears, asking the operator “Do you wish to record a...
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Sherwood M501 User Manual Chapter 3 Computer Control continued Please Note: - Log files should be recorded in a notebook, giving details of log files, date, time, and samples being run. The “Instrument Panel” section of the Annunciator screen simply shows the data which is available on the front panel of the instrument, although it is able to show inlet temperature, outlet temperature, and humidity simultaneously.
Sherwood M501 User Manual Chapter 3 Computer Control continued Monitor/Log Instrument The operator is able to run the M501 as if in manual mode, controlling the parameters from the instrument front panel, and still be able to monitor the drying process and store the data.
Sherwood M501 User Manual Chapter 3 Computer Control continued Supervisor Control The Supervisor mode is accessible on the top left of the screen position between Exit and Help. It is provided as a security feature. Trying to access it, you are requested to enter a code. The code that has been...
Sherwood M501 User Manual Chapter 4 Maintenance General maintenance WARNING! Before starting any maintenance procedure on the Fluid Bed Dryer ensure that the instrument is switched off and disconnected from the electrical supply and read all the instructions thoroughly. This is for your safety and to prevent damage to the instrument.
Sherwood M501 User Manual Chapter 4 Maintenance continued Replacement of Flange “O” Ring There is a silicon “O” ring in the flange on the top of the instrument on to which the tub assemblies seal. Should the instrument develop an air leak coming from between the tub-assembly and the instrument, this ring will have to be replaced.
(0) on the front panel. Should the instrument behave differently than described above, please notify your dealer or call Sherwood. Failure to pass the power on tests are indicative of either an indicator or the function itself not operating correctly.
- REPLACING COMPONENTS blower motor motor brushes heater element electrical diagrams Contact Sherwood Scientific for further information regarding Service and Maintenance of your instrument. Tel. +44 (0) 1223 – 243444 Fax. +44 (0) 1223 – 243300 e-mail info@sherwood-scientific.com...
Conditions and specific exceptions that apply to the above statement are as follows: End-user warranty time commences on the day the product is shipped from Sherwood or on the date of the delivery of product to end-user premises provided the end user informs Sherwood that he has received the product, by making a copy of this page appropriately completed and faxing it to Sherwood on +44 (0)1223 243300.
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(including but not limited to the limitations of the liability of Sherwood as set forth above), shall not be binding upon Sherwood unless reduced to writing and approved by an officer of Sherwood Scientific.
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REMOVING THE M501 Fluid Bed Dryer Cover 1) At the rear of the instrument, remove the plastic fan cover located in the recess on the right hand side. This will reveal two of the three screws on the right hand side, that must be removed to release the cover.
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