Corning Digital Hot Plate & Stirrer Instruction Manual

Instruction Manual

6795PR

For All Hot Plates, Stirrers, and Stirrer/Hot Plates with Digital Displays and for the 6795PR Temperature Controller

About This Manual

This manual is designed to assist you in optimal usage of your new hot plate, stirrer, stirrer/hot plat or temperature controller. The manual is available in English, French, German, Japanese, Korean, Mandarin Chinese and Spanish in the product literature section of Coming’s website hop://www.coming.com/lifesciences. Product Voltages Hot planes, stirrers, and stirrer/hot plates are available in different voltages. Before initial me, check that the unit you received is the correct voltage for your location. Warranty Registration Filling out and mailing the attached Warranty Registration Card or submitting this information online at hnpl/www.coming.coin/lifesciences/wanantywill validate the hot plate, stirrer or stirrer/hot plate’s two year warranty.

Safety Information
This instruction manual contains important operating and maintenance instructions which must be read, understood, and followed by the prod-uct user. Failure to me this product according to this instruction manual may degrade or defeat the protection normally provided by this product. Read this instruction manual prior to product use and keep this instruc-tion manual for future reference.

Product Symbols

Product Symbols

Warnings
Personal Injug

  • Do nor use this product in a manner other than as stated in the Operating Conditions section of this manual as the protection provided by the equipment may be impaired.
  • This product is designed for me in laboratory environments by persons knowledgeable in safe laboratory practices.
  • Always wear safety glasses and other appropriate protective equipment when operating this product.

Electric Shock

  • This product must be connected to a grounded power outlet for safe functioning.
  • Use only the power cord supplied with the product.
  • The power cord is the device available for full disconnect from mains input.
  • Position the product for use so that the power cord can be easily dis-connected without having to move the product.
  • Disconnect the power cord before moving or cleaning the unit.

Product Damage

  • Keep the product dry and clean.
  • Do not immerse the product for cleaning.
  • The ceramic top may break if impacted.
  • The maximum gross weight placed on the top surface must not exceed 11Kg (25 lbs.)
  • These units are not explosion or spark proof. Do not heat or stir volatile or flammable materials.
  • Do not operate this product near volatile or flammable materials.
  • Do not use this product with a metal vessel.

Operating Conditions

Corning hot plates, stirrers, and stirrer/hot plates are designed m provide safe functioning under the following conditions:

  • Indoor use D Altitude up to 2000 meters (6,500 feet)
  • Ambient temperatures of 0°C to 30°C
  • Product should be placed on a flat surface at least 30.5 cm (12″) from walls, 122 cm (48″) from ceilings, and 30.5 cm (12″) from other hot plates if using multiple units.
  • Maximum relative humidity of 80% for temperatures up to 31°C, decreasing linearly to 50% relative humidity at 40°C.
  • Pollution Degree 2: Any foreign matter that may accumulate on or within the product during normal use is not electrically conductive.
  • Installation Category Product is designed for connection to an electrical branch circuit inside a building with main supply voltage fluctuations not exceeding *10% of the nominal voltage.

Product Controls and Indicator

Product Controls
  1. Power. Indicalm, Illuminates at all times when the product is properly connected to input power.
  2. Stir Control Knob: Turn it all the way counterclockwise to turn off stirring function. Turn it clockwise to set desired stirring speed.
  3. Stiffing Speed Display: Shows the speed set for stirring
  4. Heat Control Knob: Turn it all the way counterclockwise to turn off heating function. Turn it clockwise to set desired heating temperature.
  5. Heating Tetnperatax Display: Shows the temperature set for heating.
  6. Her Top Indicator: Illuminates when the temperature of the top is too hot to touch (greater than -60°C).
  7. Temperature Probe In Use Indicator: illuminates when the external temperature probe is connected to the unit.

Product Connections

  1. Power Cord Input Connect the supplied power cord into this External
  2. External Temperature Controller Input Connect the optional External emperature Controller (Coming Cat. No. 6795PR) into this connector.
Product Connections

To Connect the External Temperature Controller

  1. Turn the Stir Control Knob and Heat Control Knob to the OFF position.
  2. Disconnect power cord.
  3. Insert temperature controller connector into the input connector.
  4. Reconnect power cord.
  5. Product is now ready for use with External Temperature Controller. Repeat the above process when disconnecting the temperature controller.

Stirring Instructions
PC-410D, PC-420D, PC-610D, PC-620D

  1. Fill vessel with solution to be stirred.
  2. Place stir bar into vessel.
  3. Place vessel in the center of the top surface.
  4. Turn Stir Control Knob until the Stirring Speed Display shows the desired speed. The speed setting can be adjusted according to the table below.
Stirring Instructions
  • Flashing Display: The number will FLASH when actual stirring speed is nor at set speed.
  • Constant Display: The number will not flash when actual stirring speed is at the set speed.The number will remain constantly ON when the actual stirring speed is at the set speed.

5. When desired stirring is complete, turn the Stir Control Knob to the OFF position. Allow stir bar to cease rotation before removing the vessel from the unit.

6. Heating and stirring can be performed simultaneously with PC-420D and PC-620D models which offer both heating and stirring functions.

Please note that the viscosity of the stirred material will affect the ability of the stir bar to remain coupled to the rotating ring magnet. Materials of high viscosity must be stirred at slower speed settings.

Heating Instructions
(without rxtemal Temperature Controller)
PC-400D, PC-420D, PC-600D, and PC-620D

  1. Fill vessel with solution to be heated.
  2. If using a PC-420D or PC-620D and the stirring function, place stir bar Into vessel.
  3. Place vessel in the center of the top surface.
  4. Turn Heat Control Knob tuna the Heating Temperature Display shows the desired temperature. The temperature setting can be adjusted in 5°C increments.
  • Hashing Display The number shown on the Heating Temperature Display will FLASH when actual heating wmperature Is not at the set temperature.
  • Colorant ‘Apt,: The number shown on the Healing Temperature Display will remain constantly ON when the actual heating temper-ature is at the set temperature.
  • Hot Top Indicator The Hot Top Indicator will be ON at all times when the temperature of the top surface is too hot to touch (greater than approximately 60.q.
  • The Hot Top Indicator vrill FLASH when the Heat Control K.ol, is turned OFF, but the top surface is still too hot to touch.
  • The Hot Top Indicator will be OFF when the temperature of the top is less than approximately 60°C.

Caution: The Hot Top Indicator will turn OFF when the power cord is disconnected from the product even if the temperature of the top surface is still too hot to touch.

Heating Instructions
(with External Temperature Controller, Corning Catalog No. 6795PR)
PC-400D, PC-420D, PC-600D, PC-620D, and 6795PR

  1. Connect the External Temperature Controller to the connector on the back of the unit. – Temperature Probe in Use Indicator: This will illuminate when External Temperature Controller is properly connected.
  2. Fill vessel with solution to be heated.
  3. If using a PC-420D or PC-620D and the stirring function, place stir bar into vessel.
  4. Place vessel in the center of the top surface.

5. Insert the tip of the External Temperature Probe into the solution.

-The tip should be located in the center of the vessel and at approximately
one-half of the depth of the solution.
6. Secure the position of the External Temperature Controller by using a
ring stand/support rod and clamp.

-Assure that the cable of the External Temperature Controller does
not come into contact with the heating surface.
7. Turn Heat Control Knob until the Heating Temperature Display
shows the desired heating temperature.

-Flashing Display: The number shown on the Heating Temperature
Display will FLASH when the actual heating temperature is not at
the set temperature.

-Constant Display: The number shown on the Heating Temperature
Display will remain constantly ON when the actual heating temperature
is at the set temperature.

-Hot Top Indicator: The Hot Top Indicator will be ON at all times
when the temperature of the top surface is too hot to touch (greater
than ~60°C).

-The Hot Top Indicator will FLASH when the Heat Control Knob
is turned OFF but the top surface is still too hot to touch.

-The Hot Top Indicator will be OFF when the temperature of the
top is less than ~60°C.

Caution: The Hot Top Indicator will turn OFF when the power cord is disconnected from the product even if the temperature of the top surface is still too hot to touch.

Heating Operation Principles
The heating element and a temperature sensor are located just beneath the ceramic top surface of the product. The microprocessor controlled heat, generated by the heating element, is based upon the sensor temperature and the value set on the Heating Temperature Display. When the sensor temperature is not within range of the value set on the display, the display will FLASH. When the sensor temperature is within range, the value displayed will remain constantly ON. The Heating Temperature Display does not indicate the actual temperature of materials placed on top of the product or the actual temperature of the ceramic top surface.

The table below shows a typical difference between the temperature set on the Heating Temperature Display and the actual temperature measurement of the ceramic top surface:

Temperature Set

(The information above was taken using a 6795-420D with no top load
in 20°C ambient conditions)

Using the External Temperature Controller, Corning Inc. Cat. No.6795PR
enables precision temperature control of materials placed in vessels on top of
the product.

An External Temperature Controller is available for this product as an
accessory item. See page 11 for more details.

When the External Temperature Controller is connected to the product, the closed loop control process described previously is extended to include temperature input from the External Temperature Controller.

The microprocessor controlled heat, generated by the heating element, is based upon the sensor temperature located in the tip of the External Temperature Controller and the value set on the Heating Temperature Display. When the sensor temperature is not within range of the value set on the display, the display will FLASH. When the sensor temperature is within range, the value displayed will remain constantly ON.


When the External Temperature Controller is connected to the product and properly placed into a liquid on the top surface, then the Heating Temperature Display does indicate and directly control the actual temperature of the liquid on the top surface.

Caution: The top surface and the vessel used may be at substantially higher temperatures than indicated by the setting on the Heating Temperature Display as the controller regulates the liquid temperature inside the vessel.

Heating Operation Safety
The microprocessor controlled system has error routines built in to detect product operation in some unfavorable conditions. The type of error routines which may be active in a product varies depending upon the functionality of the model and the operating software version. If an error routine is engaged, the product will typically shut down. Some error routines will display an error code number in the left digital location of the Heating Temperature Display when the product is shut down. For more information on error codes, call Corning Technical Service at 978.442.2200.

A product shut down by an error routine must be disconnected and reconnected to mains input before it can be used again. Please contact Corning Inc. or a Corning Authorized Repair Facility if a product does not reset from the error routine shut down or if it continues to shut down after resetting.

Caution: Error routines built into these products do not substitute the need to use these products per the specified operating conditions and according to safe laboratory practices. There are potential failure modes in product functionality or in process of use that could result in uncontrolled or unexpected heating of the top surface. Reaction plans should be developed and safety precautions put in place based on the worse case scenario that any materials placed on the top surface could be subjected to a continuous supply of heat, raising the material temperature to levels in excess of 550°C.

Product Repair
There are no direct user serviceable components inside this series of products. A list of available replacement parts are listed on page 12. Please contact Corning or a Corning authorized repair facility for repair or maintenance issues.

Product Maintenance
Power

Caution: Disconnect power to the product by unplugging the power cord before performing any maintenance or inspection procedures.
◗ Inspect the power cord regularly and replace if damaged. Use only replacement power cords available from Corning and Corning authorized product distributors.

Ceramic Top Plate
◗ These products are supplied with Corning’s proprietary Pyroceram®
top that is easy to clean and highly resistant to scratches, corrosion, and chemical attack.
◗ The ceramic top may break during use if not properly maintained.
◗ Keep the ceramic top clean. A nonabrasive cleaner may be used to clean the ceramic top.
◗ Inspect the ceramic top for damage during cleaning.
◗ Discontinue product use if the ceramic top is chipped, etched, or
shows excessive scratching. A replacement top can be ordered. See page 12 for details.
◗ Contact Corning or a Corning authorized repair facility for top replacement.
General
◗ It is important to keep this product dry and clean.
◗ Remove minor exterior liquid spills promptly.
◗ Clean exterior surfaces with a nonabrasive cleaner. Do not reconnect product to power input until all cleaned surfaces have dried.
◗ If liquid or wet solid material gets inside the product, immediately disconnect power to the product and discontinue use. Contact Corning for additional instructions regarding interior spills.

Accessories

Optional Accessories

Optional Accessories

Replacement Parts

Replacement Parts

Technical Specifications

Technical Specifications

Product Size and Dimensions

Product Size and Dimensions

Frequently Asked Questions

◗ I have a beaker of water on my hot plate and set the temperature for 550°C. Why does the display setting blink and not remain constant?
The display will blink at any time when the temperature sensor is not within range of the set temperature value. The temperature measured by the sensor is a composite of the temperature of the heating element located beneath the sensor, the ceramic top above the sensor, and the very small air space around the sensor. Water requires a substantial amount of heat in order to boil yet remains at a constant temperature of 100°C for the duration of the boiling process. Although the heating element is producing maximum heat at the 550°C setting, the water consumes this heat so quickly during the boiling process that the heat is unable to raise the temperature measured by the sensor to within range of the 550°C set value.
◗ How long does it take to bring a beaker of water to boil?
Using a 600 mL PYREX® beaker with 400 mL of water at 25°C, it takes approximately 15 minutes to bring the water to a full, rolling boil.
◗ Can I use a metal tray on top of my Corning® hot plate?
No. The metal will act as a heat sink, and have a high probability of creating an abnormal heating condition. If an abnormal condition is detected, the product will shut down. A metal vessel will also scratch the ceramic top plate.
◗ The stir bar keeps decoupling. Why and what can I do to stop this?
These units are programmed to minimize decoupling. However, liquid viscosity, stir bar magnetic strength, vessel used, and speed changes can cause decoupling. High viscosity liquids must be stirred at slower speed settings. The magnetic strength of stir bars can weaken over time and may need to be replaced. Vessels used need to have thin, flat bottoms to insure optimal performance. Rapid decreases in stir speed can cause decoupling as the magnet slows down quicker than the stir bar and the liquid.
◗ What size vessel should I use?
Vessels used on the top of a hot plate must not be larger than the top plate.

◗ Corning sells replacement parts. Can I do the repairs myself instead of sending it in to Corning’s equipment repair department?
When repairs are completed by Corning or a Corning authorized repair facility, the performance and safety of the product will be verified before being returned to you. We do sell replacement parts so customers can complete repairs themselves. It is recommended that only people knowledgeable in electronics complete those repairs. There is no warranty or return on equipment replacement parts.

CE Declaration of Conformity
Corning Incorporated hereby declares under its sole responsibility that the following products:
◗ 6796-400D, 6796-410D, 6796-420D, 6796-600D, 6796-610D, 6796-620D
Conform to the following EU Directives:
◗ 73/23/EEC: Low Voltage Directive, as amended by 93/68/EEC
◗ 89/336/EEC: Electromagnetic Compatibility Directive, as amended by 92/31/EEC and 93/68/EEC
Presumption of compliance to these directives is supported through successful evaluation to the requirements of the following standards:
◗ IEC 61010-1: 2001 (Second Edition)
◗ IEC 61010-2-010: 2003 (Second Edition)
◗ IEC 61010-2-051: 2003 (Second Edition)
◗ EN61326-1
◗ EN61000-3-2, -3-3, -4-2, -4-3, -4-5, -4-6, -4-8, -4-11

Product Disposal
The “crossed-out wheelie bin” symbol, if present on the product, indicates that the product was planned for use in a country complying with the Waste Electrical and Electronic Equipment EU Directive, 2002/96/EC. This symbol indicates that this equipment must not be disposed of with unsorted municipal waste. It is the product user’s responsibility to correctly dispose of waste equipment by handing it over to an authorized facility for separate collection and recycling. It is the product user’s responsibility to decontaminate waste equipment from biological, chemical, and/or radiological hazards prior to disposal.
Additional information pertaining to the disposal of Corning stirrer/hot plates per the WEEE Directive can be obtained at www.corning.com/weee.

Warranty Statement
Corning Incorporated warrants this product to be free from defects in material and workmanship when used under normal laboratory conditions for two (2) years. This warranty begins from the date of the purchase by the end user.
This warranty is made in lieu of all other warranties expressed or implied including the warranties of merchant ability and fitness for a particular purpose. Corning shall not be liable for loss or damages arising from the use of these products nor for consequential damages of any kind.
In the event this product fails under normal laboratory conditions with the specified period of time because of a defect in material or workmanship, Corning will, at its option, repair or replace the product. Contact the Corning Technical Information Center for return authorization and shipping instructions at:

◗ 1.800.492.1110 (for toll-free calling within the U.S. and Canada)
◗ 1.978.442.2200 (outside the U.S.), or
◗ contact your local Corning support office listed on the back cover of this manual.

Warranty Registration
Your purchase of this product must be registered with Corning in order for your warranty to be in effect.
Register by mail by detaching the Warranty Registration card from this instruction manual and mailing the completed card.
Or you can register online at http://www.corning.com/lifesciences/ warranty.

Your Purchase Record
Corning recommends that you record the details of your purchase in the spaces below for your future reference.

Model Number _____________________________________________________
Serial Number ______________________________________________________
Date Purchased/Received for use _______________________________________
Purchased From ____________________________________________________
Purchase Reference Number ______________________________

Corning Incorporated
Life Sciences
Tower 2, 4th Floor
900 Chelmsford St.
Lowell, MA 01851
t 800.492.1110
t 978.442.2200
f 978.442.2476
www.corning.com/lifesciences

Questions about your Manual ? Post in the comments!

Leave a comment

Your email address will not be published. Required fields are marked *