Gerber/Butyrometer bath T100-MST20 Operating Manual
Grant Instruments, based near Cambridge, England is a world leader in the manufacture and design of equipment for sample preparation, scientific analysis, data acquisition and data analysis providing solutions to the global scientific and industrial markets. Standards Compliance and Quality Grants’ brand and reputation are based around quality, reliability and accuracy. We ensure our products stringently meet all necessary international safety standards.
Contents Contents 1.0 Use of products 2.0 How to use this operating manual 3.0 Safety information 3.1 Safety compliance 3.2 Safety symbols 4.0 Operating instructions 4.1 Unpacking instructions 4.2 Fitting controller to the tank 4.3 Removing the controller from the bridge plate 4.4 Recommended liquids 4.5 Installation 4.6 Electrical supply 5.0 Operating procedures 5.1 Operation 5.1.1 Filling the tank 5.1.3 Emptying the tank 5.1.4 Setting up and switching on 5.2 Using the T100 5.2.1 Product description 5.2.
1.0 Use of products The following products are covered by this operating manual: T100-MST20 The product listed above is a general purpose immersion thermostat (T100) combined with a custom stainless steel tank (MST20) designed for milk analysis using the Gerber test method. It is intended for indoor laboratory use by a professional user. 2.0 How to use this operating manual This operating manual will allow you to unpack, set-up and operate the T100 immersion thermostat correctly and safely.
3.0 Safety information 3.1 Safety compliance Grant immersion thermostats meet the requirements of international safety standard IEC 61010: Safety requirements for electrical equipment for measurement, control, and laboratory use. They also comply with the equivalent national standards including: EN 61010-2-010 UL 61010A-2-010 CAN/CSA-C22.2 NO. 61010-2-010-04. 3.
4.0 Operating instructions 4.1 Unpacking instructions Standard equipment includes: Immersion thermostat (T100) Tank (MST20) includes bridge plate with hinged lid Tray Mains cord with plug Operating manual Remove packing materials carefully and retain them for future shipment or storage of the equipment. 4.2 Fitting controller to the tank The T100-MST20 is supplied ready assembled. For cleaning purposes instructions are provided for attachment and removal of the T100 controller. 1.
4.4 Recommended liquids The following table lists the recommended liquids for different temperature ranges. Always ensure the liquid used is safe and suitable for your working temperature. If using non-recommended heat transfer liquids, it is the responsibility of the user to conduct an assessment to ensure the intended fluid is compatible with the T100-MST20 and vessel.
5.0 Operating procedures 5.1 Operation 5.1.1 Filling the tank Fill the tank with approximately 20 litres of water. The T100 has low level float switch which will alarm if the liquid level drops below the minimum required level and the unit will switch off the heater and stop temperature control. 5.1.3 Emptying the tank The MST20 should be emptied to a safe level prior to moving. Allow the liquid temperature to fall to a safe level before emptying.
5.2 Using the T100 5.2.1 Product description Heater on light Alarm light Display Function button Select button Control dial Float switch 5.2.2 Product indicators There are two indicator lights on the T100 Heater on light (orange) marked Alarm light (red) marked The alarm lamp will light to indicate the following faults: Float switch has operated due to low liquid level Over temperature cut out has operated Temperature probe fault The cause of the alarm will also be shown on the display.
5.2.3 Setting the control temperature The temperature of the bath liquid can be set using the S button. 1. Whilst the display is showing the bath temperature, press the S button. This will cause the display to flash indicating that it can be set. 2. Use the main dial to set the desired temperature. If no key is pressed for 10 seconds then the display will revert back to showing the bath temperature and the set temperature will remain at its original value. 3.
5.2.6 Completing a calibration The T100 allow a two point calibration to be completed. The calibration menu can be accessed by simultaneously pressing the F and S buttons for about 5 seconds. The calibration temperatures are constrained by the temperature limits of the liquid type setting. Calibration should be carried out using a traceable reference thermometer with an accuracy of at least 0.1°C. This thermometer should be held securely in the centre of the bath or vessel.
5.2.7 Restoring factory calibration settings The restore factory calibration allows the unit settings to be reset if there is a problem during calibration or you wish to cancel any of the calibration settings. 1. Press the F and S buttons simultaneously for approximately 5 seconds until “LCAL” is shown. 2. Rotate the dial until the display shows “rST” and press the S button to select. 3. Press the S button four times (the display will show “Con.3”, “Con.2”, Con.
6.0 Technical specifications 6.1 Operating conditions Ambient temperature range 5 to 40°C Altitude above sea level Up to 2,000m (6,500ft) Operating environment Indoor use only Maximum relative humidity 80% RH up to 31°C decreasing to 50% RH at 40°C 6.2 Electrical details Mains supply: Pollution degree: Installation category: 220-240V @ 50/60Hz 2 II Mains supply voltage fluctuations are not to exceed ±10% of the nominal supply voltage. 6.
conductivity. It is important to use only de-ionised water from an ion exchange system with replaceable cartridges. Do not use de-ionised water generated from an ionexchange system that incorporates a salt back-flush system to regenerate the ionexchange resin as this can leave sodium ions that are very corrosive to stainless steel. 7.
8.0 Warranty information When used in laboratory conditions according to this manual, this product is guaranteed for THREE YEARS against faulty materials or workmanship. Extended warranty for years four and five can be purchased by contacting our sales department at labsales@grantinstruments.com. 9.0 Maintenance and service 9.
9.6 Service If service is required, switch off the unit and contact Grant Instruments or your local representative for repairs. Please note, all returned units must be accompanied by a Return Materials Authorisation (RMA) number, obtainable by contacting the Grant service department (details below). Service Department Grant Instruments (Cambridge) Ltd Shepreth Cambridgeshire SG8 6GB UK Tel: +44 (0) 1763 260 811 Fax: +44 (0) 1763 262 410 E-mail: labservice@grantinstruments.com 10.
11.0 Troubleshooting Symptom Possible cause Action required Display shows “Cut” Over-temperature cut-out has operated The heating element has exceeded 110°C. Allow the unit to cool and reset the over-temperature cut-out by switching the unit off and on again. If unit still shows a “Cut” alarm then the unit has an internal fault and must be repaired before it is used again..
Display shows “Open” Faulty temperature probe Have a competent person check the probe for an open circuit fault or contact Grant. Display shows “Shrt” Faulty temperature probe Have a competent person check the probe for a short circuit fault or contact Grant. Unit showing erratic temperatures Calibration values not Restore the factory calibration settings (see section set correctly 5.2.7) then re-calibrate if required (see section 5.2.6).
12.0 Contact Grant Instruments At Grant we are continuously trying to improve the performance we offer our customers. If you have any feedback on Grant’s products or services we would like to hear from you. Please send all feedback to: Quality Manager Grant Instruments (Cambridge) Ltd Shepreth Cambridgeshire SG8 6GB UK Tel: +44 (0) 1763 260 811 Fax: +44 (0) 1763 262 410 E-mail: feedback@grantinstruments.com 13.
Grant Instruments (Cambridge) Ltd Shepreth Cambridgeshire SG8 6GB UK Tel: +44 (0) 1763 260811 Fax: +44 (0) 1763 262410 Email: labsales@grantinstruments.com www.grantinstruments.
