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STIRRED LIQUID BATH
MODEL HYDRA 798
User Maintenance Manual/Handbook
Isothermal Technology Limited, Pine Grove, Southport, PR9 9AG, England
Tel: +44 (0)1704 543830 Fax: +44 (0)1704 544799 Internet: www.isotech.co.uk E-mail: info@isotech.co.uk
The company is always willing to give technical advice and assistance where appropriate. Equally, because of the programme of
continual development and improvement we reserve the right to amend or alter characteristics and design without prior notice.
This publication is for information only.
Page 1 of 26
Hydra 798 Iss.10 – 04/18
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Summary of Contents for Isotech HYDRA 798
- Page 1 Isothermal Technology Limited, Pine Grove, Southport, PR9 9AG, England Tel: +44 (0)1704 543830 Fax: +44 (0)1704 544799 Internet: www.isotech.co.uk E-mail: info@isotech.co.uk The company is always willing to give technical advice and assistance where appropriate. Equally, because of the programme of continual development and improvement we reserve the right to amend or alter characteristics and design without prior notice.
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Page 2: Table Of Contents
CAL NOTEPAD ..................................24 Minimum System Requirements ............................24 Development ..................................24 Licence ....................................24 Installing Cal NotePad ............................... 25 Starting Cal NotePad ................................ 25 Protocol .................................... 25 ACCESSORIES ..................................26 Page 2 of 26 Hydra 798 Iss.10 – 04/18... -
Page 3: Guarantee
Isothermal Technology Limited Pine Grove, Southport, Merseyside, PR9 9AG, England Telephone: +44 (0)1704 543830/544611 / Fax: +44 (0)1704 544799 Email: info@isotech.co.uk / Website: www.isotech.co.uk Page 3 of 26 Hydra 798 Iss.10 – 04/18... - Page 4 CAUTIONARY NOTE ISOTECH PRODUCTS ARE INTENDED FOR USE BY TECHNICALLY TRAINED AND COMPETENT PERSONNEL FAMILIAR WITH GOOD MEASUREMENT PRACTICES. IT IS EXPECTED THAT PERSONNEL USING THIS EQUIPMENT WILL BE COMPETENT WITH THE MANAGEMENT OF APPARATUS WHICH MAY BE POWERED OR UNDER EXTREMES OF TEMPERATURE, AND ARE ABLE TO APPRECIATE THE HAZARDS WHICH MAY BE ASSOCIATED WITH, AND THE PRECAUTIONS TO BE TAKEN WITH, SUCH EQUIPMENT.
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Page 5: Electrical Safety
The blue conductor should be connected to Neutral and the Brown conductor to Live (Line). Warning: Internal mains voltage hazard. Do not remove the panels. There are no user serviceable parts inside. Contact your nearest Isotech agent for repair. Voltage transients on the supply must not exceed 2.5kV. -
Page 6: Health And Safety Instructions
Do not dismantle the apparatus without disconnecting it from the supply and leaving time for it to reach ambient temperatures. Do not use the apparatus outside its recommended temperature range. The apparatus is protected by an over temperature circuit, ensure correct settings at all time. Page 6 of 26 Hydra 798 Iss.10 – 04/18... -
Page 7: On Arrival
Optional accessories are available and will only be present if specified on your order. In the unlikely event of any items arriving damaged please retain the packing materials (which may need to be inspected later) and then contact your supplier. Page 7 of 26 Hydra 798 Iss.10 – 04/18... -
Page 8: Specification
230V 50/60Hz 798M 1.5 KW 110V 50/60Hz 230V 50/60Hz 798L 2.5 KW 110V 50/60Hz 230V 50/60Hz The temperature range of the Hydra 798H was increased from 200°C to 300°C from 2016. Page 8 of 26 Hydra 798 Iss.10 – 04/18... -
Page 9: Front Panel Controls
FRONT PANEL CONTROLS OVER/UNDER-TEMPERATURE CONTROLLER (SAFETY) TEMPERATURE CONTROLLER HEATER ENABLED ON / OFF SWITCH FLOW CONTROL Page 9 of 26 Hydra 798 Iss.10 – 04/18... -
Page 10: Rear Panel
REAR PANEL Page 10 of 26 Hydra 798 Iss.10 – 04/18... -
Page 11: Important Read This Now
The diagram below gives a graphical account of the Hydra medium chiller function Chiller enabled. Full cooling, by-pass valve off By-pass valve enabled Band of temperature where by-pass valve is active. Page 11 of 26 Hydra 798 Iss.10 – 04/18... -
Page 12: Chiller Function - Low
The chiller is fully automated and requires no user intervention. Because of the complex nature of this refrigeration system, it is recommended that in the event of service, you contact Isotech for advice as it is generally beyond the scope of standard refrigeration systems. Chiller gases and quantities... -
Page 13: Using The Controller
When the SP.RAT is active the lower setpoint display will now automatically update with the current value, known as the working setpoint. The setpoint can be seen by pressing either the UP and DOWN key. The Setpoint ramp rate operates when the bath is heating and cooling. Page 13 of 26 Hydra 798 Iss.10 – 04/18... -
Page 14: Instrument Address
These controls allow the user more level of control over the bath performance and should only be adjusted if the user has a full understanding of PID control systems. Page 14 of 26 Hydra 798 Iss.10 – 04/18... -
Page 15: Over Temperature Controller (H Model Only)
The Temperature Policeman controller will identify which alarm has been triggered by the scrolling lower display. The message will read as follows: OVERTEMPERATURE CONDITION – ATTENTION REQUIRED UNDERTEMPERATURE CONDITION – ATTENTION REQUIRED The respective illuminated beacon will also switch off. Page 15 of 26 Hydra 798 Iss.10 – 04/18... - Page 16 To reset the controller, ensure the temperature for both over and under temperature is safe then press both the PAGE button and the SCROLL button simultaneously. The scrolling warning display will disappear and the illuminated beacon light up. Page 16 of 26 Hydra 798 Iss.10 – 04/18...
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Page 17: Units
Error 5: Input circuit failure Err5 Consult Isotech Power failure Pwr.F . The line voltage is too low Check that the supply to the controller is within the rated limits Page 17 of 26 Hydra 798 Iss.10 – 04/18... -
Page 18: Operation And Initial Testing
The motor is a brushed DC drive motor and uses internal carbon brushes, available from Isotech. Motor speed can be adjusted via the dial on the control panel, rotate the dial clockwise to increase the stir speed and counterclockwise to reduce the stir speed. -
Page 19: Choice Of Liquids
The choice of liquid is important. If it is too viscous at the operating temperature then the bath may not perform correctly. Other criteria also need to be met, such as safety, operating range and fume emission for example. Isotech is able to supply a number of fluids for various temperature ranges, refer to Volume 1 and 2 of the Solutions Catalogues. -
Page 20: Changing Liquids
Clean the bath. Detergent and absorbent paper will assist. If the bath has been used with oil it can be helpful to re fill with water and detergent and to allow the mixture to circulate before draining again. Close the tap. Page 20 of 26 Hydra 798 Iss.10 – 04/18... -
Page 21: Using The Cooling Coil
Water passed through the coil will substantially reduce the cooling time. To avoid any hazard from the expansion of water to steam do not use water at temperatures in excess of 100°C and ensure water is drained from the coil before setting the Hydra above 100°C. Page 21 of 26 Hydra 798 Iss.10 – 04/18... -
Page 22: Cleaning And Maintaining The Bath
Remove the motor cover via the four screws on the side. Remove the four screws securing the motor plate to the top cover. Lift the motor assembly clear of the calibration volume and clean the internal parts required. Page 22 of 26 Hydra 798 Iss.10 – 04/18... -
Page 23: Using The Pc Interface
The Isotech conversion leads are suitable for maximum combined lead lengths of 10M that is adequate for most applications. Connections For RS232 use simply connect the Isotech cable, a 9 to 25 pin converter is included to suit PCs with a 25 pin serial converter. RS422 Connections... -
Page 24: Cal Notepad
CNP. The license fee reflects this allocation of risk. CNP is not designed for situations where the results can threaten or cause injury to humans. Page 24 of 26 Hydra 798 Iss.10 – 04/18... -
Page 25: Installing Cal Notepad
Installing Cal NotePad Insert Isotech Support CD into the CD drive. Allow CD browser to open and install version of Cal NotePad required. Follow the prompts which will install the application and necessary LabVIEW run time support files. Should you ever need to uninstall the software then use the Add/Remove Programs option from the Control Panel. -
Page 26: Accessories
Standard Dual Cell Holder 798-05-03 Thermometer Support Kit 798-05-04 Mercury Triple Point Cell 17724 Water Triple Point Cell Gallium Melt Point Cell 17401 Slim Gallium Melt Point Cell 17401M Indium Freeze Point Cell 17668M Page 26 of 26 Hydra 798 Iss.10 – 04/18...
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