PolyScience MX-CA11B User manual

MX Immersion Circulator
Operator’s Manual
110-511 PSC/EN 26 July 2012
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 1
Table of Contents
Introduction ...........................................................................................................................................2
General Information...............................................................................................................................3
General Safety Information.................................................................................................................. 3
Safety Recommendations.................................................................................................................... 4
Regulatory Compliance and Testing .................................................................................................... 5
Unpacking Your Immersion Circulator..................................................................................................5
Package Contents...............................................................................................................................5
Controls and Components...................................................................................................................6
Quick-Start.............................................................................................................................................7
Installation and Startup......................................................................................................................... 8
Normal Operation ................................................................................................................................ 10
Turning Your Circulator ON ............................................................................................................... 10
Main Operational Display................................................................................................................... 10
Set-Up Sub-Menus............................................................................................................................ 11
Adjusting the Temperature Set Point ................................................................................................. 11
Selecting the Temperature Unit ......................................................................................................... 12
Setting the Offset Calibration............................................................................................................. 13
Setting the Low Limit Temperature .................................................................................................... 14
Setting the High Limit Temperature ................................................................................................... 15
Resetting the Factory Default Values................................................................................................. 15
Loss of Power Restart ....................................................................................................................... 16
Alarm Messages ............................................................................................................................... 17
Routine Maintenance and Troubleshooting ....................................................................................... 18
Maintaining Clear Bath Water............................................................................................................ 18
Cleaning Your Immersion Circulator .................................................................................................. 18
Checking the Over-Temperature Safety System ................................................................................ 19
Troubleshooting Chart....................................................................................................................... 20
Technical Information ......................................................................................................................... 21
Performance Specifications............................................................................................................... 21
Reservoir Fluids ................................................................................................................................ 22
Application Notes .............................................................................................................................. 23
Equipment Disposal (WEEE Directive)............................................................................................... 23
Replacement Parts and Accessories.................................................................................................. 25
PolyScience Circulating Bath Fluids.................................................................................................. 25
Service and Technical Support........................................................................................................... 26
Warranty .............................................................................................................................................. 26
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 2
Introduction
Thank you for choosing the MX Immersion Circulator. It is intended for the precise temperature control of
suitable liquids in a reservoir. Extremely easy to use and maintain, it combines design innovation with
highly intuitive operation to deliver convenient and versatile liquid temperature control for a wide range of
applications.
WARNING: PolyScience Circulating Baths are not intended for directly controlling the temperature of
foods, pharmaceuticals, medicines, or other objects which may be ingested by or injected in humans
or animals. Any such objects must be isolated from contact with the bath fluid and bath surfaces.
Here are some of the features that make the MX Immersion Circulator so user-friendly:
• Simple, intuitive operation
• Displays actual and set point temperature simultaneously
• Powerful pump, easy flow adjustment
• Attaches securely to both flat and rounded tank walls
• Converts any tank or vessel up to 28 liters into a reliable circulating bath
• Fully enclosed housing prevents direct contact with pump and heater, yet provides quick
access for inspection and cleaning
• Suitable for use with Class I non-flammable fluids per DIN 12876-1
It will take you very little time to get your new MX Immersion Circulator installed and running, This
Operator’s Manual is designed to guide you quickly through the process. We recommend that you read it
thoroughly before you begin.
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 3
General Information
General Safety Information
When installed, operated, and maintained according to the directions in this manual and common safety
procedures, your MX Immersion Circulator should provide safe and reliable liquid heating. Please ensure
that all individuals involved in the installation, operation, or maintenance of this unit read this manual
thoroughly prior to working with the unit.
This symbol alerts you to a wide range of potential dangers.
This symbol advises danger from electricity or electric shock.
This symbol indicates that a hot surface may be present.
This symbol marks information that is particularly important.
This symbol indicates alternating current.
/
These symbols on the Power Switch / Circuit Breaker indicate that they place the main power supply
ON / OFF.
This symbol on the Power Key indicates that it places the unit in a standby mode. It DOES NOT fully
disconnect the unit from the power supply.
This symbol indicates a protective conductor terminal.
Read all instructions pertaining to safety, set-up, and operation.
Proper operation is the user’s responsibility.
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 4
Safety Recommendations
To prevent injury to personnel and/or damage to property, always follow your workplace’s safety
procedures when operating this equipment. You should also comply with the following safety
recommendations:
WARNING:
• This Immersion Circulator is suitable only for use with Class I non-flammable fluids (per DIN
12876-1).
• Be aware of the chemical hazards that may be associated with the bath fluid used. Observe all
safety warnings for the fluids used as well as those contained in the material safety data sheet.
• Use only recommended bath fluids; see Technical Information in the rear of this manual for
recommendations.
• Use only non-acid bath fluids.
WARNING:
• Always connect the power cord on this Circulator to a grounded (3-prong) power outlet. Make
certain that the outlet is the same voltage and frequency as your unit.
• Never operate the Circulator with a damaged power cord.
• Always turn the Circulator OFF and disconnect mains power before performing any maintenance
or service.
WARNING:
• Never operate the Circulator without bath fluid in the reservoir. Periodically check the reservoir to
ensure that the liquid depth is within acceptable levels. Always refill the reservoir using the same
bath fluid that is already in the reservoir. Bath oil must not contain any water contaminants and
should be preheated to the actual bath temperature before adding as there is an explosion hazard
at high temperatures.
• Turn electrical power to the unit OFF and remove Immersion Circulator from reservoir before
draining. Always drain all fluid from the reservoir before moving or lifting. Be sure to follow your
organization’s procedures and practices regarding the safe lifting and relocation of heavy objects.
WARNING:
• Always allow the bath fluid to cool to ambient temperature before draining.
• Always keep within the 85°C maximum operating temperature limit if using a polycarbonate open
bath tank.
WARNING: It is the user’s responsibility to properly decontaminate the unit in the event hazardous
materials are spilled on exterior or interior surfaces. Consult manufacturer if there is any doubt
regarding the compatibility of decontamination or cleaning agents.
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 5
Regulatory Compliance and Testing
This equipment is compliant with the European Directive 2002/95/EC and its latest amendments on
Restrictions on Hazardous Substances (RoHS) and below the given limits of hazardous substances.
ETL Intertek (60 Hz units)
UL 61010-1 / CSA C22.2 No. 61010-1 — Safety Requirements for Measurement, Control, and
Laboratory Use; Part 1: General Requirements
UL 61010A-2-010 / CSA C22.2 No. 61010-2-010:04 — Safety Requirements for Measurement, Control,
and Laboratory Use; Part 2-010: Particular Requirements for Laboratory Equipment for the Heating of
Materials
UL 61010A-2-051 / CSA C22.2 No. 61010-2-051:04 — Safety Requirements for Measurement, Control,
and Laboratory Use; Part 2-051: Particular Requirements for Laboratory Equipment for the Mixing and
Stirring
CE (all units)
EC Low Voltage Directive 2006/95/EC
EC Electromagnetic Compatibility Directive 2004/108/EC
IEC 61010-1-2001
IEC 61010-2-2001
IEC 61326:2005 / EN 61326 : 2006
Unpacking Your Immersion Circulator
Your Immersion Circulator is packed in a special carton. You should keep this carton, along with all
packing materials, until the unit has been installed and you are certain it is working properly.
CAUTION: Remove any loose packing material that may have fallen into the heater/pump housing
during shipping. Before powering up, check that nothing remains around the heater or circulator pump.
We recommend that you begin using your Immersion Circulator immediately to confirm proper operation,
since beyond one week you may be eligible for warranty repair only (rather than replacement). You’ll find
complete warranty information in the back of this manual.
In the unlikely event that the unit was damaged or does not operate properly, immediately contact the
transportation company, file a damage claim, and contact the company where your Immersion Circulator
was purchased.
Package Contents
The following items are included in the shipping carton:
• MX Immersion Circulator
• Quick-Start Guide
• Resource Disk with Operator’s Manual
• Qualification Test Results
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 6
Controls and Components
Front View Rear View
Main Display
Backlit
Display
Up Arrow
Button
Down Arrow
Button
Menu
Button
Power
Button
Safety Thermostat
(under plate)
Maximum
Liquid Level
Indicator
Front Flow
Adjuster
Mounting
Clamp
Rear Flow
Adjuster
Heater /Pump
Access Cover
Power Cord
Actual Bath
Temperature
Temperature
Set Point
Heating
Circulating
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 7
Quick-Start
See Installation and Startup for additional information.
1 Attach Immersion Circulator
to reservoir
2 Fill reservoir with fluid
3 Connect power cord to
electrical outlet
4 Turn Immersion Circulator “ON”
5 Enter temperature set point
6 Set safety thermostat once the
unit reaches set point



[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 8
Installation and Startup
Your MX Immersion Circulator is easily installed. The only tools required are a flat-head screwdriver and a
container for adding water or another suitable fluid to the user-supplied reservoir.
1. Place the flow adjusters in the desired position. These slide controls allow you to easily adjust
the force with which liquid will circulate in the reservoir. You’ll achieve maximum circulation by
placing both the front and rear flow adjusters in the fully open position.
WARNING: To avoid the potential for burns, do not change the position of the flow adjusters
while your Immersion Circulator is immersed in hot liquid. For safety, turn power to the unit
off, remove from reservoir, and allow to cool before making adjustments.
2. Attach the Immersion Circulator to the reservoir (user-
supplied). A mounting clamp is provided that mounts securely to
both flat and rounded tank walls. Allow a minimum of 1.3 cm /
0.5 inch clearance between the bottom of the Circulator’s
housing and the bottom of the reservoir.
3. Add liquid to the reservoir. The liquid in the reservoir should
be maintained somewhere between the “Maximum” and
“Minimum” liquid level lines embossed on the heater/pump
housing.
WARNING: See Technical Information in the rear of this manual for a list of compatible
liquids.
WARNING: Read the safety data sheet for the bath fluid being used carefully before filling
reservoir.
WARNING: If the proper fluid level is not maintained, the heater coil may become exposed
and possibly damaged (fluid level too low) or the bath may overflow (fluid level too high).
4. Plug the power cord into a properly grounded electrical outlet. The LCD will light and
“Standby” will appear on the display.
WARNING: The correct voltage and frequency for your Immersion Circulator are indicated
on the identification label on the back of the unit. The use of an extension cord is not
recommended. If one is necessary, it must be properly grounded and capable of handling
the total wattage of the unit. The extension cord must not cause more than a 10% drop in
voltage to the unit.
WARNING: Make certain that the electrical outlet is the same voltage and frequency as
your Immersion Circulator.
Maximum
liquid level
Minimum
liquid level
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 9
5. Turn power ON. Press ; all characters and symbols on the LCD will momentarily light. The
Immersion Circulator will begin running, actual and set point temperatures will be displayed, and
the word “SET” will be continuously lit. The circulating symbol will also be lit and the heating
symbol will also be flashing if the actual bath temperature is below the set point temperature.
6. Set the Safety Set temperature. This is a “Do Not Exceed” temperature setting for your
Circulator and is the temperature at which the heater will be turned OFF in the event that the
liquid level in the bath drops too low or the Circulator malfunctions. It is normally set about 5°
higher than the desired operating temperature. Setting the Safety Set temperature is a four-step
process.
A. Using a flat blade screwdriver, rotate the Safety
Thermostat (located beneath the cover plate on the
front of the unit’s housing) clockwise until it stops.
B. Press the or key; “SET” will begin flashing.
Continue pressing the and keys until the set
point temperature is equal to your desired Safety
Set temperature. “SET” will stop flashing
approximately 10 seconds after the desired
temperature has been entered. Allow the Circulator
to stabilize at this temperature.
C. Once the bath temperature has stabilized, slowly rotate the Safety
Thermostat counter-clockwise until you hear a soft “click;” the
OVERTEMP or LOW FLUID alarm symbol will appear on the display
approximately 5-10 seconds later. At this point, the heater will also turn
OFF.
D. Slowly rotate the Safety Thermostat clockwise until the alarm symbol
extinguishes. The heater should also turn back ON. You are now ready
to start normal operation.
WARNING: The Safety Thermostat is user-adjustable from approximately 40°to 155°C. Do not force
the indicator dial beyond the stops at either end of the dial’s range.
Heating Symbol
Circulating
Symbol



Over-
Temperature/Low Liquid Level alarm
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 10
Normal Operation
Keys and Controls
Power
Turns the Immersion Circulator ON.
Menu
Accesses the Temperature Controller’s set-up sub-menus. The items in
these sub-menus are used to configure the Controller’s general
operational parameters (temperature unit, upper and lower temperature
limits, offset calibration, etc.).
Up Arrow
Used to increase temperature set point and other operational
settings/values.
Down Arrow
Used to decrease temperature set point and other operational
settings/values.
Turning Your Circulator ON
Press the key.
All characters/symbols on the LCD will momentarily light. When the Circulator begins running, the actual
and set point temperatures will be displayed and the circulating symbol will be lit.
If the actual bath temperature is lower than the set point temperature, the heat symbol will also be lit.
Main Operational Display
Actual Bath
Temperature
Set Point
Temperature
Heating
C
irculating
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 11
Set-Up Sub-Menus
Press the key to access the Temperature Controller’s set-up sub-menus. The or keys are used
to change the current setting / value in the sub-menu.
Sub-Menu Selection / Range To Change
Current Value
Temperature unit °C or °F Press for °C
Press for °F
Offset Calibration -3.0°C to +3.0°C Press or
Low Limit -35°to +10°C / -30°to +50°F Press or
High Limit +40°to +140°C / +100 to +285°F Press or
To accept a value in a sub-menu, press or allow the display to ‘time out’ (approximately 10 seconds).
Adjusting the Temperature Set Point
This is the temperature at which the fluid in your circulating bath will be maintained. It may be set to one-
tenth of a degree over a range of -50°to +135°C / -60°to +275°F. The factory default is 20°C / 68°F.
To Change: Press the or key. The word “SET” will begin flashing. Continue holding
or repeatedly press or until the desired set point temperature is displayed.
To Accept: Press or allow the LCD to return to the main operational display
(approximately 10 seconds).
Flashes when set point
is being changed
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 12
Selecting the Temperature Unit
The temperature units sub-menu (°C / °F) allows you to select the temperature unit in which the actual
bath temperature and set point temperature are displayed. The factory default is °C.
To Access: Press the key until the °C/°F appears on the display.
To Change: Press to select °C; press to select °F.
To Accept: Press or allow the LCD to return to the main operational display
(approximately 10 seconds).
Appears when i
n
Temperature Units
sub-menu
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 13
Setting the Offset Calibration
This sub-menu allows you to match the Circulator’s temperature display to an external reference
thermometer. A value from -3.0°to +3.0°C may be entered; the factory default is 0.0°C.
IMPORTANT: To prevent the Offset Calibration value from being changed unintentionally, the following
power down/power up sequence is required to enable the Offset Calibration function.
1. Turn Mains power OFF by disconnecting the electrical cord from the outlet.
2. Turn Mains power ON while pressing and holding the key.
3. When STANDBY appears on the display, release the key and press . You can now
proceed as outlined below.
The Offset Calibration function will remain enabled until the electrical power is turned OFF by pressing
the key.
To Access: Press the key until OFFSET CALIBRATE appears on the display.
To Change: Press or .
To Accept: Press or allow the LCD to return to the main operational display
(approximately 10 seconds).
CAUTION: The Offset Calibration value is always shown in degrees C, even if degrees F is selected as
the temperature unit in which the control and actual bath temperatures are displayed. Your Immersion
Circulator will automatically convert the °C offset calibration value to the correct °F display offset value.
Appears when in
Offset Calibrate sub-menu
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 14
Setting the Low Limit Temperature
This sub-menu allows you to limit how low the temperature set point may be set. It also serves as a low
limit safety, alerting you if bath temperature falls below the low limit temperature setting. The Low Limit
value may be set from -35°to +10°C / -30°to +50°F; the factory default is -35°C / -30°F.
To avoid an unwanted alarms or shutdown during regular operation, the Low Limit value should be set at
least 5°lower than the selected control temperature.
To Access: This Press the key until LOW LIMIT appears on the display.
To Change: Press or .
To Accept: Press or allow the LCD to return to the main operational display
(approximately 10 seconds).
Appears when in the
Low Limit sub-menu
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 15
Setting the High Limit Temperature
This sub-menu allows you to limit how high the temperature set point may be set. It also serves as a high
limit safety, alerting you if bath temperature rises above the high limit temperature setting. The High Limit
value may be set from +40°to +140°C / +100°to +285°F; the factory default is +140°C / +285°F.
To avoid an unwanted shutdown during regular operation, the High Limit value should be set at least 5°
higher than the selected control temperature.
To Access: This Press the key until HIGH LIMIT appears on the display.
To Change: Press or .
To Accept: Press or allow the LCD to return to the main operational display
(approximately 10 seconds).
Resetting the Factory Default Values
You can return your Circulator to all factory-set default as follows:
1. Press the key to turn the Circulator OFF.
2. Unplug the power cord from the electrical outlet.
3. Plug the power cord back into the electrical outlet while pressing either the or .button.
The factory default values are:
Operational Parameter Factory Default Value
Temperature Scale °C
Temperature Set Point 20°C / 68°F
Calibration Offset 0.0°C
Low Limit -35°C / -30°F
High Limit +140°C / +285°F
Appears when in the
High Limit sub-menu
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 16
Loss of Power Restart
WARNING: The unit will start automatically after a disruption in electrical power.
In the event that electrical power lost while your Circulator is in use, it will begin operating automatically
once power is restored. FAIL POWER will appear on the display to alert you that there was a power
disruption. To clear the message, turn the Circulator OFF and then back ON again using the key.
FAIL POWER
Indicates electrical power was
disrupted during operation
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 17
Alarm Messages
Alarm
Symbol Description Corrective Action
FAIL POWER
Informational Message:
Indicates that electrical power
was lost during operation.
Using the key, turn the Circulator OFF and then back ON.
This will clear the message.
(flashing)
Warning: The temperature set
point is below the Low Limit
temperature value.
Decrease the Low Limit temperature value or increase the
temperature set point.
(flashing)
Warning: The temperature set
point is above the High Limit
temperature value.
Increase the High Limit temperature value or decrease the set
point temperature.
Alarm: The bath temperature
has fallen below the Low Limit
temperature value. Power to
the pump and heater will
remain OFF until the problem
is corrected.
Allow bath to warm or add heat load.
Decrease the Low Limit temperature value.
Alarm: The bath temperature
has risen above the High Limit
temperature value. Power to
the heater and pump will
remain OFF until the problem
is corrected.
Allow bath to cool or increase High Limit temperature value.
Replace fluid.
Fault: The liquid in the bath
has dropped too low or the
temperature of the bath fluid
has exceeded the Safety Set
temperature. Power to the
heater will remain OFF until the
problem is corrected.
Fluid level in reservoir has fallen below minimum level;
add fluid as required.
Fluid temperature is higher than Safety Set temperature;
increase Safety Set temperature setting.
Controller failure; consult factory.
Fault: The Circulator’s
temperature sensor has failed. Consult factory.
Fault: The Circulator’s heater
has failed. Consult factory.
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 18
Routine Maintenance and Troubleshooting
WARNING: Always turn your Circulator OFF and disconnect it from the electrical power outlet before
performing any maintenance or service.
WARNING: To avoid the potential for burns, allow the Immersion Circulator to cool completely before
cleaning or performing any maintenance.
WARNING: Turn electrical power to the unit OFF and remove Immersion Circulator from reservoir
before draining. Always drain all fluid from the reservoir before moving or lifting. Be sure to follow
your organization’s procedures and practices regarding the safe lifting and relocation of heavy
objects.
CAUTION: Always clean and dry your MX Immersion Circulator thoroughly before storing.
Maintaining Clear Bath Water
Optimum temperature and moisture conditions for algae growth existing when using water as a bath fluid.
To prevent algae contamination and minimize the frequency of draining the reservoir, an algaecide such
as polyclean Algaecide (004-300040) should be used.
WARNING: Do not use chlorine bleach.
Cleaning Your Immersion Circulator
WARNING: It is the user’s responsibility to properly decontaminate the unit in the event hazardous
materials are spilled on exterior or interior surfaces. Consult the manufacturer if there is any doubt
regarding the compatibility of decontamination or cleaning agents.
Temperature Controller
Turn the Temperature Controller OFF by pressing and unplug power cord from the electrical outlet.
Remove Temperature Controller from bath reservoir and, keeping it upright, wipe the housing with a clean
cloth dampened with a mild detergent and water or mild all-purpose cleaner.
CAUTION: Do not spray cleaning liquids directly onto the Temperature Controller or allow them to
enter the Controller’s vents. Do not use abrasives as these could scratch the housing or the digital
display.
CAUTION: Never immerse the Circulator’s controls or display in water or other liquids or place under
running water. Do not clean the unit in a glassware washer.
[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!

110-511 PSC/EN 19
Bath Reservoir and Wetted Components
A concentrated bath cleaner (polyclean Bath Cleaner, part number 004-300050) is available to remove
mineral deposits from the Temperature Controller’s wetted parts. The cleaner should be added to the
bath reservoir at the prescribed dosage and circulated at 60°C / 140°F until the scale is removed.
Pump Impeller
In the unlikely event that debris becomes lodged in the pump impeller, a soft brush can be used to
remove any lodged particles. If necessary, soak in a solution of distilled water and polyclean Bath Cleaner
to soften before brushing.
CAUTION: Do not use hard utensils or abrasive pads to remove trapped debris.
Checking the Over-Temperature Safety System
Your Circulator incorporates over-temperature protection according to IEC 61010. For optimum safety,
this system should be checked for proper operation at least every six months. This check must be
performed with the unit running.
1. Enter a temperature set point of approximately 50°C and then allow the bath to stabilize at that
temperature. The amount of time this will take will depend on the size of the bath and the difference
between the initial bath temperature and the Safety Set temperature.
2. Once the bath temperature has stabilized, slowly rotate the Safety Thermostat
counter-clockwise until you hear a soft “click;” the OVERTEMP or LOW FLUID
alarm symbol will appear on the display approximately 5-10 seconds later. At
this point, the heater will also turn OFF.
3. Slowly rotate the Safety Thermostat clockwise until the alarm symbol
extinguishes (you may also hear a soft “click”). The heater should turn back
ON.
4. Reset the Safety Set temperature to the desired temperature value
(see Installation and Startup).



[e-mail]
www.GlobalScientificSupply.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!