Ratek TH7100 User manual

Ratek TH7100 Digital Immersion Heater Circulator - User Manual
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User Manual
Digital Immersion Heater Circulator
Model : TH7100
ersion: 1.1 – 16/06/2015
English
www.ratek.com.au
www.ratek.com.auwww.ratek.com.au
www.ratek.com.au
60 Wadhurst Dve, Boronia, ictoria 3155, Australia - P: [phone] - F: [phone] - E: [e-mail]
© All Rights Reserved
Made in Australia, User Manual printed in Australia
Changes without prior notification reserved
Errors and omissions excepted.
User Manual TH7100 – Digital Immersion Heater Circulator

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Thank you
Thank you for purchasing a Ratek product.
This User Manual will assist you in the correct installation and operation of the Digital Immersion Heater Circulator, as well as explain
the safety requirements for its use.
Important: lease read the contents of this User Manual before unpacking and operating the product.
Unpacking and Checking
Once you have read these instructions in full and understand the installation and safety requirements including those for unpacking the
carton, please carefully open the packing and slowly remove the product. Carefully inspect the condition of the product to ensure it has
not been damaged in transit. Any damage should be reported immediately to the responsible carrier. If the product is damaged in any
way, re-pack the product into the supplied packaging and notify the responsible carrier immediately.
Important: Do not operate the equipment if it has been damaged in any way. Any failures resulting through the use of a
damaged product will not be covered by the product warranty.
Carton Contents
Ensure that you have received all items outlined below before proceeding. If you have not received all components in the supplied
carton, please re-pack the carton and notify a Ratek Service representative immediately. Contact details are provided in the section of
this User Manual titled “Ratek Service Contact Information”
-TH7100 Ratek Immersion Heater Circulator
-User Manual

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Table Of Contents age
Cash Bo
INTENDED USE ............................................................................................................................................................................................ 4
Suitable Articles For Use With This Immersion Heater Circulator................................................................................................................. 4
Unsuitable Articles For Use With This Immersion Heater Circulator ............................................................................................................. 4
Suitable Environments For The Immersion Heater Circulator....................................................................................................................... 4
General Operation.................................................................................................................................................................................. 4
O ERATOR RES ONSIBILITY – SAFETY CONSIDERATIONS .............................................................................................................................. 4
Conditions of Operation .......................................................................................................................................................................... 4
Safety Labels And Markings .................................................................................................................................................................... 5
RE ARATION ............................................................................................................................................................................................. 7
Identification of Controls & Functions ....................................................................................................................................................... 7
Recommended Liquids............................................................................................................................................................................. 8
Safety Warnings .................................................................................................................................................................................... 8
Safety Recommendations........................................................................................................................................................................ 8
Preparation & Installation ..................................................................................................................................................................... 10
Unpacking and Installing........................................................................................................................................................................ 10
Filling The Water Bath .......................................................................................................................................................................... 11
Adjusting the Mounting Clamp............................................................................................................................................................... 11
Adjusting the Pump Flow Rate............................................................................................................................................................... 11
Attaching a Hose For External Pump-Out................................................................................................................................................ 11
Connecting Power................................................................................................................................................................................ 11
Switching On The Immersion Heater Circulator ....................................................................................................................................... 11
O ERATING INSTRUCTIONS........................................................................................................................................................................ 11
General Operation................................................................................................................................................................................ 15
Setting the Over Temperature Alarm ..................................................................................................................................................... 15
Loading/Un-Loading the Water Bath ....................................................................................................................................................... 11
Switching Off The Immersion Heater Circulator ....................................................................................................................................... 11
Over Temperature Safety Cutout........................................................................................................................................................... 11
Storing & Relocating ............................................................................................................................................................................ 11
ROUTINE CLEANING AND MAINTENANCE.................................................................................................................................................... 11
Cleaning.............................................................................................................................................................................................. 11
Maintenance ....................................................................................................................................................................................... 11
Over-Temperature Safety Cutout Test.................................................................................................................................................... 11
TECHNICAL S ECIFICATIONS ...................................................................................................................................................................... 11
DIS OSAL ................................................................................................................................................................................................. 11
EMC CONFORMITY..................................................................................................................................................................................... 11
RATEK SERVICE CONTACT INFORMATION.................................................................................................................................................... 11
TROUBLESHOOTING.................................................................................................................................................................................... 11
WARRANTY CONDITIONS........................................................................................................................................................................... 11

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Intended Use
This Immersion Heater Circulator is intended for the purpose of heating water in a laboratory water bath or inside other containers
designed for the purpose. The operator may load a suitable article into the water bath for the purpose of controlled temperature
application. The Immersion Heater Circulator is intended for use with tap water or filtered water only, as well as suitable additives
where required as outlined in this User Manual.
The Immersion Heater Circulator is not intended for use with any medium other than those outlined in this User Manual. The Immersion
Heater Circulator is not intended to provide direct contact between the medium (water) and an unprotected medical, food, biological or
medico-techno item. In all cases the item should be enclosed in a suitable vessel as described below to protect it from coming into
contact with the Immersion Heater Circulator.
Suitable Articles For Use With This Immersion Heater Circulator
•Plastic or glass laboratory test tubes that are sealed, waterproof and rated to withstand the intended temperature.
•Plastic or stainless steel laboratory test tube racks that are rated to withstand the intended temperature.
• An example of a suitable article would be a sealed plastic laboratory centrifuge tube filled with blood.
Unsuitable Articles For Use With This Immersion Heater Circulator
•Any item where the article is not waterproof or may result in its contents coming into contact with the Immersion Heater
Circulator or the heating medium (water).
•Any item that is not rated to withstand the intended temperature.
• An example of an unsuitable article would be an exposed piece of animal or plant matter.
Suitable Environments For The Immersion Heater Circulator
The Immersion Heater Circulator is intended for use in a clean laboratory environment only where adequate ventilation, a good
power supply and provisions for routine cleaning are available. The Immersion Heater Circulator should not be used outdoors or
in dirty, dusty, steamy, humid or windy environments. The acceptable operating conditions are outlined further in this User
Manual.
General Operation
•The Immersion Heater Circulator is mounted onto a suitable laboratory water bath or other rigid water container using
the adjustable mounting clamp, retort mounting boss or water bath bridge plate.
•The water bath or vessel is filled with water following the safety guidelines contained within this User Manual.
•The Immersion Heater Circulator is plugged into an appropriate power source. It is powered by an alternating current
power supply with protective earth and with the appropriate receptacle, rated voltage and frequency for the country of
its intended use. Further details on power requirements are outlined in this User Manual.
•A suitable article (as defined above) is placed inside the water bath or vessel.
•The Immersion Heater Circulator is operated via a combination of front and rear panel buttons and switches consisting of
a power switch, temperature control buttons and menu buttons. These controls allow the operator to set a required
water temperature as well as the over-temperature alarm set point..
•The Immersion Heater Circulator should be operated strictly in accordance with the Operating Instructions outlined
further in this User Manual.
Operator Responsibility – Safety Considerations
When operated in strict accordance with this User Manual, plus routine cleaning and maintenance being carried out, the product shall
provide safe operation for the operator. The operator should be aware of the following before installing and operating the product :
Conditions of Operation
*Note: The term “operator” referred to in this User Manual is the primary person who has been tasked to install, maintain
and train in the usage of this equipment. Other personnel shall be referred to as “users”.

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•The operator shall be aware that the protection provided by the equipment may be impaired if the equipment is used with
accessories not provided or recommended by the manufacturer, is modified in any way or is used in a manner not
specified by the manufacturer.
•The operator is responsible for ensuring all users of the product are qualified to do so, and are well versed in common
safety concepts. The product should only be operated by an adult who has read and understood this User Manual
provided in the appropriate language in its entirety.
•Any user must be informed by the responsible operator of any potential hazards that may arise through the use of this
equipment in the course of their work, including any local environmental hazards not related directly to the Immersion
Heater Circulator. They should also be able to demonstrate that they understand any preventative safety measures in
operation prior to operating the equipment.
•The operator shall agree to accept responsibility for the use of the equipment in accordance with this User Manual, and
be fully aware that the equipment is designed for commercial use.
•It is assumed that the user and operator have had experience in a commercial environment, and had appropriate training
in how to perform their work safely in accordance with any local operational health and safety regulations. The operator
and all users should be well versed in local emergency procedures as per the workplace safety regulations in effect.
•Avoid any direct impact with any surface of the equipment, including the casing, cover panel, element or control panel.
•Important: Do not use any sharp or pointed metal objects anywhere near the equipment, in particular the control panel.
•Avoid using the equipment near any other vibrating equipment or source of excessive vibration.
•Ensure the equipment is cleaned and maintained in accordance with this User Manual.
•Ensure that all original safety warning labels are in an adequate, legible condition and are firmly affixed to the equipment
before using the product.
•Plug the equipment directly into a wall power outlet. Do not plug the equipment into a multi-socket adapter of any kind.
•The equipment is intended for operation in a controlled electromagnetic environment. Avoid the use of transmitting
devices (e.g. cellular or mobile telephones) near the equipment whilst operating. A minimum distance of 2 Metres from
the product is recommended for any transmitting device.
•Important: The equipment must only be installed and operated in well ventilated areas. The unit is not intended for use
in explosive atmospheres, in confined spaces or inside any other piece of laboratory equipment such as humidity cabinets
or incubators.
•The allowed operating environment must be between 5° Celsius and 40° Celsius ambient air temperature. Be aware that
the ambient air temperature will limit the minimum controllable water temperature. The ambient air temperature must be
at least 7° Celsius lower than the desired controllable water temperature.
•The maximum allowed relative humidity of the operating environment is 80%.
•The equipment should not be stored in direct sunlight, near chemicals, or other contaminants.
•If any of these safety recommendations cannot be achieved or the equipment has been damaged in any way, the
equipment should not be installed or operated.
•Important : If you have any concerns or questions relating to operator or user safety, please contact the appropriate
Ratek Customer Service department before installing and operating the unit. Contact details are provided in this User
Manual.
Safety Labels And Markings
The equipment is provided with safety caution labels. An explanation of each caution label is provided below. It is the
responsibility of the operator and user to fully understand the meaning of these warning labels prior to operating the
equipment.
Very Important: articular care should be taken when working near the heating element at the bottom of the Immersion
Heater Circulator. At all times during operation the safety guard MUST REMAIN FITTED to the Immersion Heater Circulator to
avoid possible burns or scalds from the heating element.
The operator or user must also take extreme care when the bath is working at temperatures above 50° C as steam will be
present and can cause scalding.

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Caution Labels Definition
Colours: Black on a yellow background
The Immersion Heater Circulator is powered by an alternating current power
supply sufficient to cause harm if contact with the electrical supply is made.
Under no circumstances should any part of the equipment be opened, un-
screwed, loosened or disassembled whilst power is applied to the unit. Only
authorized service agents are permitted to remove covers. This label is fitted by
the manufacturer and must not be removed under any circumstances.
Colours: Black on a yellow background
The Immersion Heater Circulator is fitted with a removable guard which protects
against contact with the heating element. This guard MUST REMAIN FITTED at all
times during operation. Under no circumstances should the heating element be
touched whilst in operation. This label is fitted by the manufacturer and must not
be removed under any circumstances.
Colours: Black on a yellow background
The Immersion Heater Circulator is designed for heating water to temperatures
that can cause burns or scalding. Use extreme caution when working near hot
water or steam to avoid injury. Under no circumstances should the heating
element be touched whilst in operation. This label is fitted by the manufacturer
and must not be removed under any circumstances.

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reparation
You must take the time to familiarize yourself completely with the following operating procedures before installing or operating the
Immersion Heater Circulator in order to achieve the best performance and maximum attainable user safety.
Identification of Controls & Functions
The figure below indicates all key controls and components of the Immersion Heater Circulator with their corresponding numerical
element labeled.
Figure 1

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Recommended Liquids
Care should be taken when selecting the most appropriate heating medium for use with the Immersion Heater Circulator to ensure
optimum performance and user safety. Please refer to the table below as a guide :
rimary Temp Range °C Recommended Medium Comments
0 ~ 30
0 ~ 100
80% water, 20% laboratory ethylene
glycol
Laboratory ethylene glycol will prevent freezing at 0°C and
reduce evaporation at 100°C and as such is a good all purpose
heating medium. Use a lid to reduce the dilution of the medium
caused by condensing water vapour from the air.
Recommended over water alone for most applications
between 0° and 100°C
5 ~ 60 Water Water alone is suitable for most low temperature applications,
however laboratory ethylene glycol should be used if working
above 60°C to reduce evaporation, reduce the chance of
scalding by steam and help maintain temperature stability. At
temperatures approaching 100°C the temperature stability
will be affected due to localised boiling if laboratory ethylene
glycol is not used . This unit should not be used to boil
water.
Safety Warnings
Throughout this User Manual, specific warnings will be supplied which relate to the current operation being referred to. These warnings
are supplied in addition to the main warning labels affixed to the product and the key points outlined in the section of this User Manual
titled ‘Operator Responsibility – Safety Considerations’.
A graphical symbol as pictured below will be used next to each warning with accompanying text, the danger level for each is described
below :
CAUTION
Indicates a possibly dangerous situation which may result in serious injury or threat to life as a result of scalding or
burns if the situation is not avoided.
CAUTION
Indicates a possibly highly dangerous situation which may result in serious injury or threat to life as a result of
electric shock if the situation is not avoided.
CAUTION
Indicates a possibly harmful situation which may result in injury or damage to product or property if the situation is
not avoided.
Safety Recommendations
The following safety recommendations must be followed to prevent damage or injury. In addition to these safety recommendations,
it is assumed that the user and operator have had experience in a commercial environment, and had appropriate training in how to
perform their work safely in accordance with any local operational health and safety regulations. The operator and all users should
be well versed in local emergency procedures as per the workplace safety regulations in effect.
CAUTION
If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment
may be impaired.

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CAUTION
The equipment must only be used with a protective earth power socket. The earth contact provides protection to
the user and the equipment. If you do not have a protective earth power socket, or you are unsure as to whether
you have a protective earth power socket, do not connect the equipment. In such cases you should consult your
workplace administrator or electrical maintenance staff to determine if a protective earth power socket is available.
A surge protected power outlet is strongly recommended as it provides some protection for the equipment
in areas of poor electrical quality as well as providing some protection against lightning strikes. The
equipment should be operated on a good, reliable supply of power at all times.
Note: The Immersion Heater Circulator should not be operated on the same electrical circuit as other high voltage
household appliances such as fridges, clothes dryers, washing machines or other continuous operation high voltage
devices. These types of devices can create power fluctuations that are undesirable for electrically sensitive
equipment. Consult your workplace administrator or electrical maintenance staff if you are unsure.
CAUTION
The Immersion Heater Circulator is intended for use with tap water or filtered water only. De-ionized or distilled
water can cause corrosion. Recommended water additives are outlined further in this User Manual. Use with any
other medium is not permitted.
The use of flammable liquids may cause serious injury or danger to life.
CAUTION
Always work above the level of the Immersion Heater Circulator to avoid spillage of dangerously hot water. At no
point should the user, operator, animal or any other perishable object be situated directly beneath the Immersion
Heater Circulator or water bath.
-ALWAYS wear protective eyewear when working with hot liquids.
-ALWAYS place the water bath on a strong, even, dry, flat waterproof surface which is made of inflammable
material. Placing the Immersion Heater Circulator on an unstable water bath could cause hot water to spill.
-ALWAYS turn off the mains power switch when the unit is not in operation and turn off the mains power
supply at the outlet.
-ALWAYS turn off the mains power switch and unplug the equipment from the mains power supply outlet
before emptying the water bath or moving the equipment.
-ALWAYS be careful of water condensation above or near the Immersion Heater Circulator and ensure at all
times that the condensation cannot come in contact with the Immersion Heater Circulator control panel or
mains power lead. Ensure benches are kept dry at all times.
-ALWAYS operate the Immersion Heater Circulator in a well ventilated area with adequate clearance around
the Immersion Heater Circulator as indicated.
-ALWAYS be careful of steam and avoid making contact.
-NEVER operate the Immersion Heater Circulator without water in the water bath.
-NEVER empty the water bath while it contains hot water. Always allow the water to cool to ambient room
temperature before emptying.
-NEVER operate the equipment if you believe it is damaged in any way.
-NEVER operate the Immersion Heater Circulator if the mains power supply cable is damaged in any way
-NEVER use any sharp or metal objects near the Immersion Heater Circulator control panel.
-NEVER lift the Immersion Heater Circulator if you have an existing injury that impairs your ability to lift.

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reparation & Installation
The Immersion Heater Circulator should be installed and operated in strict accordance with the following instructions.
CAUTION
The Immersion Heater Circulator is not for use in explosive atmospheres as there is a risk of fire, explosion, burns or
scalding present under these conditions.
CAUTION
Be careful when lifting and observe your local operational health and safety requirements for lifting before unpacking
the carton.
Unpacking and Installing
-Carefully remove all packaging material from the Immersion Heater Circulator, as well as the supplied User
Manual and any other supplied accessories.
-Carefully inspect the Immersion Heater Circulator, mains power lead and all packaging for any signs of damage. If
any signs of damage are present, do not install or operate the equipment. Contact the supplier of your
equipment if you have a received a damaged product.
-Ensure the water bath to be used is empty, clean and dry and has a suitable area to accommodate the
Immersion Heater Circulator.
-Ensure that there is a minimum unobstructed distance of 300 millimetres between the left, right and rear panels
of the Immersion Heater Circulator and any other object or wall.
-Ensure that there is a minimum unobstructed distance of 1 metre above the top of the water bath to allow for
adequate ventilation and for steam to dissipate.
-Ensure that there is a suitable mains power supply outlet within reach of the supplied mains power lead without
placing any strain whatsoever on the lead, socket or plug. The Immersion Heater Circulator should not be
plugged into any double-adapter, power board, or power point splitter of any kind but instead directly into a
correctly earthed wall mounted power socket.
-Ensure that there is a minimum unobstructed distance of 1 metre in front of the Immersion Heater Circulator to
allow adequate room for the user to maintain a safe operating distance of 300 millimetres.
-Place the Immersion Heater Circulator in an upright position with the adjustable clamp over the side wall of the
water bath whilst supporting the front of the unit.
-If the clamp requires adjustment to suit the side wall of the water bath, refer to the section of this User Manual
titled “Adjusting the Mounting Clamp”.
-Slowly tighten the clamp screw to secure the unit to the side wall of the water bath, do not over-tighten.
CAUTION
The Immersion Heater Circulator is designed for the purpose of heating immersed plastic or glass sealed laboratory
test tubes, flasks or bottles suitable for use at the water temperature selected by the operator.
The contents of these test tubes is the sole responsibility of the user or operator, and the use of corrosive,
flammable, combustible, hazardous, environmentally unsafe or otherwise dangerous materials within the immersed
container is done so at the risk and liability of the user or operator.