Circulating Baths with
Standard Digital Temperature Controller
Operator’s Manual
Models:
SD07R-20
SD7LR-20
SD15R-30
SD20R-30
SD28R-30
SD07H170
SD15H170
SD20H170
SD28H170
SD29VB3S
SD29VB5R
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Table of Contents
Introduction ................................................................................................................................................. 3
PolyScience Circulating Baths with the Standard Digital Temperature Controller ................................... 3
General Safety Information ....................................................................................................................... 4
Safety Recommendations......................................................................................................................... 5
Regulatory Compliance and Testing ........................................................................................................ 6
Unpacking Your Circulator ........................................................................................................................ 6
Contents ................................................................................................................................................... 7
Controls and Components ........................................................................................................................ 8
Quick-Start ................................................................................................................................................. 12
Installation and Startup ............................................................................................................................ 14
General Site Requirements .................................................................................................................... 14
Adding Liquid to the Bath Reservoir ....................................................................................................... 14
Pump Inlet and Outlet Connections ........................................................................................................ 15
External Closed Loop Circulation ........................................................................................................... 15
Refrigeration Control Connections (Refrigerating/Heating Circulators only) .......................................... 16
Electrical Power ...................................................................................................................................... 16
RS232 Serial Communication ................................................................................................................ 17
Controller Setup ...................................................................................................................................... 18
Power ................................................................................................................................................. 18
Safety Set Temperature ..................................................................................................................... 19
Normal Operation ...................................................................................................................................... 20
Keys and Controls .................................................................................................................................. 20
Turning Your Circulator ON .................................................................................................................... 20
Main Operational Display (Home) .......................................................................................................... 21
Set-Up Sub-Menus ................................................................................................................................. 21
Adjusting the Temperature Set Point ...................................................................................................... 22
Selecting the Temperature Unit .............................................................................................................. 23
Selecting the Pump Speed ..................................................................................................................... 24
Calibrating Your Circulator...................................................................................................................... 25
Setting the Low Limit Temperature ......................................................................................................... 26
Setting the High Limit Temperature ........................................................................................................ 27
Selecting the Serial Communication Baud Rate .................................................................................... 28
Setting the Auto Cool Temperature ........................................................................................................ 29
Resetting the Factory Default Values ..................................................................................................... 29
Changing Your Circulator's Viewing Angle ............................................................................................. 30
Loss of Power Restart ............................................................................................................................ 30
Inert Gas Purge ...................................................................................................................................... 31
Tap Water Cooling .................................................................................................................................. 31
Reservoir Cover Storage ........................................................................................................................ 31
Display Messages and Alarms ................................................................................................................ 32
Routine Maintenance and Troubleshooting ........................................................................................... 33
Maintaining Clear Bath Water ................................................................................................................. 33
Draining the Bath Reservoir ................................................................................................................... 33
Checking the Over-Temperature Safety System .................................................................................... 34
Cleaning Your Circulator......................................................................................................................... 35
Temperature Controller ...................................................................................................................... 35
Bath Reservoir .................................................................................................................................... 35
Pump Impeller .................................................................................................................................... 35
Condenser, Air Vents, and Reusable Filter (Refrigerating / Heating Circulators only) ...................... 35
Temperature Controller Removal and Re-Installation ............................................................................ 36
Removal ............................................................................................................................................. 36
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Re-Installation ..................................................................................................................................... 37
Troubleshooting Chart ............................................................................................................................ 38
Technical Information ............................................................................................................................... 40
Performance Specifications .................................................................................................................... 40
Reservoir Fluids ...................................................................................................................................... 41
Application Notes .................................................................................................................................... 42
Tubing and Fitting Temperature Ranges ................................................................................................ 43
Fluid Compatibility .................................................................................................................................. 43
RS232 Communications ......................................................................................................................... 44
Equipment Disposal (WEEE Directive) ................................................................................................... 46
Replacement Parts and Accessories ...................................................................................................... 47
PolyScience Circulating Bath Fluids ...................................................................................................... 49
Service and Technical Support ............................................................................................................... 49
Warranty ..................................................................................................................................................... 50
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Introduction
Thank you for choosing a PolyScience Circulating Bath with Standard Digital Temperature Controller.
Extremely easy to use and maintain, it combines design innovation with highly intuitive operation to
deliver convenient and reliable 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 your Circulating Bath so user-friendly:
Simple, intuitive operation
Extra-large digital readout that displays actual and set point temperature simultaneously
Powerful two-speed pressure pump with external circulation capability for closed-loop
applications
180° viewing radius (Swivel 180™ rotating control head)
DuraTop™ heat and chemical resistant top plate
LidDock™ self-storing reservoir cover (integrated baths only)
Built-in temperature protection
Suitable for use with Class I non-flammable fluids per DIN 12876-1
It will take you very little time to get your new Circulating Bath 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.
PolyScience Circulating Baths with the Standard Digital Temperature Controller
Model Type
SD07R-20 Refrigerating / Heating Bath 7 liters -20° to 170°C -7° to 338°F
SD7LR-20 Refrigerating / Heating Bath 7 liters -20° to 170°C -7° to 338°F
SD15R-30 Refrigerating / Heating Bath 15 liters -30° to 170°C -22° to 338°F
SD20R-30 Refrigerating / Heating Bath 20 liters -30° to 170°C -22° to 338°F
SD28R-30 Refrigerating / Heating Bath 28 liters -30° to 170°C -22° to 338°F
SD07H170 Heating Only Bath 7 liters Ambient +10° to 170°C Ambient +20° to 338°F
SD15H170 Heating Only Bath 15 liters Ambient +10° to 170°C Ambient +20° to 338°F
SD20H170 Heating Only Bath 20 liters Ambient +10° to 170°C Ambient +20° to 338°F
SD28H170 Heating Only Bath 28 liters Ambient +10° to 170°C Ambient +20° to 338°F
SD29VB3S Polycarbonate Viscosity Bath 29 liters Ambient +10° to 85°C
SD29VB5R Polycarbonate Viscosity Bath 29 liters Ambient +10° to 85°C
1. Maximum operating temperature for polycarbonate tank; Standard Digital Temperature Controller capable of higher
temperatures.
Reservoir
Capacity
Temperature Range
°C °F
(1)
Ambient +20° to 185°F
(1)
Ambient +20° to 185°F
(1)
(1)
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3
General Safety Information
When installed, operated, and maintained according to the directions in this manual and common safety
procedures, your Circulating Bath should provide safe and reliable temperature control. Please ensure
that all individuals involved in the installation, operation, or maintenance of this Circulating Bath read this
manual thoroughly prior to working with the unit.
This symbol alerts you to a wide range of potential dangers.
This symbol advises you of 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 and maintenance is the user’s responsibility.
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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 Circulating Bath 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
recommended fluids.
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.
Always drain all fluid from the reservoir before moving or lifting your Circulator. 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.
The reservoir cover, top deck, and/or external pump connections may become hot with continuous
use. Exercise caution when touching these parts.
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.
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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 Circulator
Your Circulator was packed in a special carton or cartons. You should keep the packaging, 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 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, contact the transportation
company, file a damage claim, and contact the company where your Circulator was purchased.
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Contents
The items included with your Circulator will vary depending on which model Circulating Bath you
purchased.
Resource Disk with
Operator’s Manual
Reservoir Lid
3-ft / 0.91 m IEC to IEC
Power Cord
6-ft / 1.82 m IEC to Mains
Power Cord
Refrigeration Control
Cable
Fittings
Refrigerating / Heating
Bath
N/A N/A
N/A N/A
1/4 in. NPT to 3/16 in. barbed adapter
1/4 in. NPT to 1/4 in. barbed adapter
1/4 in. NPT to 3/8 in. barbed adapter
¼ in. NPT to M16 barbed adapter
Heating Only
Bath
(1)
(1)
(1)
(2)
Viscosity
Bath
Cooling Coil N/A Integral Integral
Certificate of Compliance
Quick-Start Guide
1. 120V and 240V models
2. 240V models only
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Controls and Components
r
t
Standard Digital Controller
3.75” Color
LCD Display
Power Key
Home Key
Menu Key
Touch Scroll Bar
Set Key
Swivel 180
Latch Release
Power Switch /
Circuit Breake
(located on Refrigeration
Power Module on
Refrigerating/Heating
Circulators)
Safety Set
Thermosta
IEC Electrical Connection
IEC Power Cord
Safety Set Reset
Access
Refrigeration Control
Connection (functional on
Refrigerating/Heating
Circulators only)
RS232 Serial Port
Inert Gas Injection Port
Fluid Outlet Connection
Bypass Tubing
Fluid Inlet Connection
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Refrigerating/Heating Baths
t
r
r
Standard Digital
Temperature Controller
Reservoir Cover
Reservoir Drain Valve and Por
(behind access panel)
Side access on SD7LR-20)
Washable Air Filte
(behind access panel)
IEC Power Connection to
Refrigeration Power Module
Drain Valve and Port
(right side on SD7LR-20)
Refrigeration Control
Connection
Power
Cooling
Cooling Fault
Fan
Refrigeration Power Module
Power Switch / Circuit Breake
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Cooling System Status Display
Refrigeration Control Connection
IEC Power Connection to Controller
IEC Power Connection to Mains
9
Heating Only Baths
t
r
Reservoir Drain Valve and Por
(behind access panel)
Standard Digital
Temperature Controller
Reservoir Cover
Power Switch / Circuit Breake
IEC Power Connection to Mains
Tap Water Cooling Connection
(inlet)
Tap Water Cooling Connection
(outlet)
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Viscosity Baths
Lidded Viscometer Ports
Reservoir
Drain Port
Standard Digital
Controller
Tap Water
Cooling Coil
WARNING: The top deck on Viscosity Baths is not attached. Do not remove deck while Circulator is
operating. Do not lift bath by grasping the Temperature Controller or top deck. Always disconnect
electrical power and drain fluid from bath before moving.
WARNING: To avoid the potential for burns, allow the Circulator to cool completely before cleaning
or performing any maintenance.
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Quick-Start
Unless otherwise specified, quick-start instructions apply to all models.
See Installation and Startup for additional information.
1
Fill reservoir with fluid
Maximum: 1 in. / 2.54 cm
below underside of top
deck
Minimum: 4.5 in. / 11.5 cm
below top deck
Heating only models
Connect all electrical power cords
2
and control cables
Place Power Switch / Circuit
3
Breaker in ON position
IEC power cord
from Controller to
Refrigeration
Power Module
Refrigerating / heating
models
Refrigeration
control cable
Heating only models
Refrigerating / heating
models
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4
¨
Turn Controller “ON”
Enter temperature
5
set point
5B.
Touch and hold or
slide finger up/down
scroll bar
5A.
Press SET
6
Set safety thermostat
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Installation and Startup
k
Your Circulating Bath with Standard Digital Temperature Controller is designed to be simple to set-up and
install. The only tools required are a flat-head screwdriver and a container for adding water or other
suitable fluid to the bath reservoir.
General Site Requirements
Locate your Circulator on a level surface free from drafts and direct sunlight. Do not place it where there
are corrosive fumes, excessive moisture, high room temperatures, or in excessively dusty areas.
Refrigerating / Heating Circulators must be 10.2 cm / 4 inches or more away from walls or vertical
surfaces so that airflow is not restricted.
Avoid voltage drops by using properly grounded power outlets wired with 14 gauge or larger diameter
wire and if possible, be close to the power distribution panel. The use of extension cords is not
recommended; this will reduce the potential for problems caused by low line voltage.
Adding Liquid to the Bath Reservoir
WARNING: Read the safety data sheet for the bath fluid being used carefully before filling reservoir.
WARNING: See Technical Information in the rear of this manual for a list of compatible liquids.
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).
The liquid in the reservoir should be maintained at a depth between 1 inch / 2.54 cm and 4.5 inches /
11.5 cm below the underside of the bath’s top deck. Upon start up, it may be necessary to add fluid to the
bath to compensate for the fluid required for external circulation. Likewise, be sure to compensate for fluid
displacement when placing samples or other materials in the Circulator’s reservoir.
Minimum Fluid Level =
4.5 inches / 11.5 cm
below underside of top
WARNING: Always drain all fluid from the reservoir before moving or lifting your Circulator. Be sure
to follow your organization’s procedures and practices regarding the safe lifting and relocation of
heavy objects.
WARNING: To avoid the potential for burns, allow the Circulator to cool completely before cleaning
or performing any maintenance.
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dec
Maximum Fluid Level =
1 inch / 2.54 cm below underside
of top deck
14
Pump Inlet and Outlet Connections
WARNING: When connecting tubing to an external application, it is the user’s responsibility to make
sure that the tubing and fittings connected to the Circulator are suitable for the fluid being used and
the temperature range of operation.
CAUTION: The Circulator’s bypass tubing is secured to the fluid inlet and outlet connections by high
temperature nylon hose clamps, which can be removed by carefully cutting them with diagonal cutters.
CAUTION: Secure the tubing to the inlet and outlet fittings using hose clamps with a minimum ID of
7/8 inch (22 mm). Do not operate the unit without hose clamps.
WARNING: If the Circulating Bath will not be used for external circulation, the inlet and outlet ports
should remain connected using the Buna N bypass tubing provided with the unit.
The pump inlet and outlet ports are female ¼ inch NPT connections that permit use of barbed tubing
adapters or hard plumbing fittings. ½ inch (13 mm) ID tubing may also be slid over these connections and
held in place with hose clamps (minimum 7/8 inch / 22 mm) ID.
If the pump inlet and outlet are not used for external circulation, the Bypass Tubing provided with the unit
should be left in place in order to optimize fluid mixing within the reservoir.
The nylon barbed tubing adapter fittings supplied with the unit are intended for applications from
-40° to 93°C. For applications above 93°C, brass, stainless steel, or Teflon
®
fittings are recommended.
¼ inch NPT to M16 stainless steel male adapter fittings are provided with all 50Hz models.
NOTE: The use of quick-connect fittings is not recommended as they typically restrict flow rate.
External Closed Loop Circulation
Connect the pump inlet and outlet to the external apparatus. To maintain adequate flow, avoid restrictions
in the tubing. When connecting the Circulator to more than two closed loops, the use of a manifold made
of “Y” adapters to divide the fluid into multiple banks is recommended. After setting up multiple closed
loops, check for adequate flow at the return manifold of each loop and check that the bath fluid is at an
adequate level. A booster pump may be added to closed loops without damaging the Circulator’s pump.
The temperature control stability of a closed loop system is better at the external apparatus than in the
Circulator reservoir (provided the control point of the apparatus represents a constant load and is well
insulated). For example, if you circulate fluid through a viscometer at 50°C, the temperature variation
observed in the Circulator reservoir may be ±0.1°C while the temperature variation in the viscometer may
be only ±0.05°C.
Although temperature stability is generally better at the external apparatus control point, depending on the
length of tubing used and the efficiency of the insulation, the actual temperature reading at the external
apparatus may be slightly different than the temperature reading at the Circulator reservoir.
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Refrigeration Control Connections (Refrigerating/Heating Circulators only)
Attach the Refrigeration Control Cable to the Refrigeration Control Connections on the rear of the
Temperature Controller and the Refrigeration Power Module.
Refrigeration Control Connection
Refrigeration Control Cable
Refrigeration Control Connection
Electrical Power
WARNING: The Circulator’s power cord must be connected to a properly grounded electrical
receptacle. Make certain that this electrical outlet is the same voltage and frequency as your
Circulator. The correct voltage and frequency for your Circulator are indicated on the identification
label on the back of the Controller.
CAUTION: 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.
Refrigerating / Heating Circulators
Attach the 3-ft / 0.91 m power cord to the IEC electrical connectors on the Temperature Controller (male)
and the Refrigeration Power Module (female).
Attach the 6-ft / 1.8 m power cord to the IEC electrical connection on the Refrigeration Power Module and
then plug the male connector into the Mains electrical outlet.
Place the Power Switch / Circuit Breaker on the Refrigeration Power Module in the ON position. The LCD
on the Controller will light and “Standby” will appear on the display; the PolyScience logo and the Power
Key will also light.
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NOTE: To conserve power when not in use, the LCD’s backlighting will go out about 5 seconds after
r
“Standby” appears. The Power Key and PolyScience logo will remain lit to indicate that the Controller is
energized and ready to use.
IEC Power Connection to
Refrigeration Power Module
IEC to IEC Power Cord
Refrigeration Power Module
IEC Power Connection to Controller
IEC Power Connection to Mains
Power Switch / Circuit Breake
IEC to Mains Power Cord
Heat Only Circulators and Viscosity Baths
Attach the 6-ft / 1.8 m power cord to the IEC electrical connection on the Temperature Controller and then
plug the male connector into the Mains electrical outlet.
Place the Power Switch / Circuit Breaker on the Temperature Controller in the ON position. The LCD on
the Controller will light and “Standby” will appear on the display; the PolyScience logo and the Power Key
will also light.
NOTE: To conserve power when not in use, the LCD will go black about 5 seconds after “Standby”
appears. The Power Key and PolyScience logo will remain lit to indicate that the Controller is energized
and ready to use.
RS232 Serial Communication
CAUTION: Always turn electrical power to the Circulator OFF before making a connection to the
serial (DB9) port.
Your Circulator features RS232 serial communication for remote data logging and control capability. A 9pin female D-connector is provided on the rear of the Temperature Controller for this purpose.
The serial interface should be connected to a serial communication port on a remote PC using an
appropriate cable. Information on the RS232 command and communication protocol can be found in the
Technical Information section of this manual.
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Controller Setup
Power
Press . The 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 or refrigerating
symbol may be lit or flashing.
Heating Symbol
Refrigerating
Symbol
Circulating
Symbol
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Safety Set Temperature
t
¨
This is a “Do Not Exceed” temperature setting for your Circulator and is the temperature at which the
heater will be turned OFF should the liquid level in the bath drop too low or the heater malfunctions. It is
normally set about 5° higher than the desired operating temperature. Setting the Safety Set temperature
is a multi-step process.
WARNING: The Safety Thermostat is user-adjustable from approximately 40° to 170°C. Do not force
the indicator dial beyond the stops at either end of the dial’s range. The “12:00” o’clock position
represents approximately 100°C.
NOTE: The Safety Set must be manually reset whenever it is tripped. The Reset is located in the
vertical slot to the left of the Safety Thermostat.
Safety Se
Reset access
Safety Set
Thermostat
1. Using a small flat blade screwdriver, rotate the Safety Thermostat clockwise until it stops.
2. Press
The arrow around the word “SET” and the numerals to the left of the decimal point will
.
begin flashing. Small blue lights will also begin flashing on the touch scroll bar.
3. Place your finger on the touch scroll bar and slide it up / down until the set point temperature is equal
to your desired Safety Set temperature. “SET” will stop flashing about 10 seconds after the
temperature has been set. Allow the bath to stabilize at this temperature.
4. Once the bath temperature has stabilized, slowly rotate the Safety Thermostat counter-clockwise until
the OVERTEMP or LOW FLUID alarm message appears on the display and the alarm sounds. At this
point, the heater will also turn OFF.
5. Press
to turn the Circulator OFF.
6. Allow the bath to cool and then reset the Safety Set by
inserting the blade of the screwdriver or the end of a
paperclip into the access slot and pressing until you hear
the Safety Set reset (an audible click).
7. Press
to turn the Circulator back ON. If the alarm reactivates, repeat steps 5 and 6 until the alarm no longer
activates when the Circulator is turned back ON. You are
now ready to start normal operation.
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Normal Operation
Keys and Controls
Power
Home
Menu
SET
Touch Scroll
Bar
Turns the Circulator’s Temperature Controller ON.
Returns the LCD to the Main Operational Display (from any screen).
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, pump speed, upper and low
temperature limits, etc. (see Set-up Sub-Menus, below).
Used in conjunction with the Touch Scroll Bar to change the set point
temperature.
Used to make temperature set point and other operational changes.
Slide finger up / down scroll bar or touch upper / lower sections to make
minor adjustments; press and hold to make large adjustments.
Turning Your Circulator ON
Press the key.
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 heating symbol will also be lit.
Refrigerating/Heating Models: If the actual bath temperature is higher than the set point temperature, the
refrigerating symbol will be lit. It is normal for both the heating and refrigerating symbols to be lit
simultaneously when nearing or maintaining the set point temperature.
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Main Operational Display (Home)
A
This is the Circulators main operational display. You can return to this screen at any time by pressing the
key.
Lit when heating
Lit when refrigerating
(Refrigerating/Heating
models only)
Lit when circulating
bath fluid
Set-Up Sub-Menus
Pressing the
used to change the current setting / value in the sub-menus.
key accesses the Temperature Controller’s set-up sub-menus. The Touch Scroll Bar is
ctual bath
temperature
Set point
temperature
Sub-Menu Selection / Range Factory Default
Temperature unit °C or °F °C
Pump Speed Low or High High
Calibration -3.0°C to +3.0°C 0.0°C
Low Limit -52° to 20°C / -65° to +65°F -52°C
High Limit +25° to +175°C / +80° to +350°F 175°C
Baud 1200, 2400, 4800, 9600, 19200, 38400, 57600 9600
Refrigeration Control
(Refrigerating / Heating
1 to 150°C 45°C
Circulators only)
To accept a value in a sub-menu, press
, , or allow the LCD to return to the main
,
operational display ( approximately 10 seconds).
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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 onetenth of a degree over a range of -50.0° to +170.0°C / -60.0° to +340°F. The factory default set point is
+20.0°C / +68.0°F.
Touch and hold up/down
arrows to make large changes
Touch and release arrows or
slide finger up /down scroll bar
to make small changes
Press once to change whole
degree values
Press twice to make changes
of less than a degree (decimal
point will flash)
To Change: Press . The arrow around the word “SET” will begin flashing. To make
changes of one degree or more, touch the up/down arrows until the desired set point
temperature is displayed. To make changes of less than a degree, (e.g.,0.50°C), press
a second time. The decimal point will begin flashing. Touch the up/down arrows until
the desired value is displayed.
To Accept: Press
, , or allow the LCD to return to the main operational
,
display (approximately 10 seconds).
NOTE: An audible alarm and the words Low Limit or High Limit flashing on the display indicate that the
temperature set point value is outside the Low Limit or High Limit value. The Circulator will continue to
heat/cool until the actual bath temperature reaches the Limit value, at which point operation will stop.
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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.
Touch top arrow for
degrees C
Touch bottom arrow for
degrees F
To Access: Press the
key until °C/°F appears on the display.
To Change: To select °F, touch the bottom portion of the scroll bar; to select °C, touch
the top portion of the scroll bar.
To Accept: Press
, , or allow the LCD to return to the main operational
,
display (approximately 10 seconds).
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23
Selecting the Pump Speed
This sub-menu allows you to select your Circulator’s pump speed. The choices are Low (LO) and
High (HI); the factory default is High (HI).
Touch top arrow to select
High
Touch bottom arrow to select
Low
To Access: Press the
key until PUMP appears on the display.
To Change: To select the low pump speed, touch the top arrow; to select the high pump
speed, touch the bottom arrow.
To Accept: Press
, , or allow the LCD to return to the main operational
,
display (approximately 10 seconds).
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24
Calibrating Your Circulator
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 Offset Calibration value from being changed unintentionally, the following
power down/power up sequence is required to enable the Calibration function.
1. Place the power switch/circuit breaker on the rear of the unit in the OFF position.
2. Return the power switch/circuit breaker to the ON position while pressing and holding the
When STANDBY appears on the display, release the
3.
proceed as outlined below.
The Calibration function will remain enabled until the electrical power is turned OFF by pressing the
key.
key and press
. You can now
Touch top arrow to
increase calibration offset
Touch bottom arrow to
decrease calibration offset
key.
To Access: Press the
To Change: Touch the arrows until the desired calibration temperature is displayed.
To Accept: Press
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 Circulator
will automatically convert the °C offset calibration value to the correct °F display offset value.
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key until CALIBRATE appears on the display.
, , or allow the LCD to return to the main operational
,
25
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 -52° to +20°C / -65° to +65°F; the factory default is -52°C.
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.
Touch and hold the up/down
arrows to make large
changes
Touch and release to make
minor changes
To Access: Press the
key until LOW LIMIT appears on the display.
To Change: Touch the arrows until the desired low limit temperature is displayed.
To Accept: Press
, , or allow the LCD to return to the main operational
,
display (approximately 10 seconds).
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26
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 +25° to +175°C / +80° to +350°F; the factory default is 175°C.
To avoid an unwanted shutdown during regular operation, the High Limit value should be set at least 5°
higher than the selected control temperature.
Touch and hold up/down
arrows to make large
changes
Touch and release to make
minor changes
To Access: Press the
key until HIGH LIMIT appears on the display.
To Change: Touch the arrows until the desired high limit temperature is displayed.
To Accept: Press
, , or allow the LCD to return to the main operational
,
display (approximately 10 seconds).
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27
Selecting the Serial Communication Baud Rate
This sub-menu allows you to select the speed at which your Circulator will transmit data. The setting on
both the Circulator and the device it is connected to should match. The baud rate setting may be 1200,
2400, 4800, 9600, 19200; 38400, or 57600; the factory default is 9600.
Touch top for fastest baud
rate
Touch bottom for slowest
baud rate
To Access: Press the
key until BAUD appears on the display.
To Change: To select the 1200 baud rate setting, touch the bottom of the scroll bar; to
select the 57600 setting, touch the top of the scroll bar. Rates between these two
extremes are selected by touching the corresponding area of the scroll bar (e.g. 9600
baud is at the mid-point of the scroll bar).
To Accept: Press
, , or allow the LCD to return to the main operational
,
display (approximately 10 seconds).
NOTE: When using RS232 communication, the Circulator’s baud rate must match that of the
connected device.
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28
Setting the Auto Cool Temperature
This sub-menu is displayed only on Refrigerating / Heating Circulators. It determines the bath
temperature at which refrigeration will be activated and permits more precise control when operating at
high temperatures as well as more rapid cool downs. For most applications, an Auto Cool set point 15°C
above room temperature is recommended. The Auto Cool range is from 1° to 150°C. The factory default
is 45°C.
Cool Command™ Refrigeration — -40°C 7 liter Refrigerating/Heating Circulators and 15 liter and larger
Refrigerating/Heating Circulators feature the Cool Command™ modulating refrigeration control system.
Cool Command allows the refrigeration system to turn on at a fluid temperature up to 150qC when the
temperature set point is changed to or below the Auto-Cool set point (150°C maximum). As a result, bath
fluid cools more quickly.
Conventional Refrigeration — -20°C 7 liter Refrigerating/Heating Circulators use a conventional
refrigeration system. The refrigeration system will turn on when the bath fluid temperature and set point
are below the Auto-Cool set point (70°C maximum).
Touch and hold up/down
arrows to make large
changes
Touch and release to make
minor changes
To Access: Press the
until AUTOCOOL is displayed.
To Change: Touch the arrows until the desired auto cool temperature is displayed.
To Accept: Press
, , or allow the LCD to return to the main operational
,
display (approximately 10 seconds).
Resetting the Factory Default Values
To reset your Circulator to its original factory default values, proceed as follows:
1. Press the
2. Place the Power Switch / Circuit Breaker in the OFF position.
3. Return the Power Switch / Circuit Breaker to the ON position while pressing the
“STANDBY” appears on the display.
4. Press the
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key to place the unit in Standby.
key.
key until
29
Changing Your Circulator’s Viewing Angle
A
Your Circulator is equipped with Swivel 180™, an innovative feature which permits viewing of the
temperature display from anywhere over a 180° arc.
NOTE: There are positive stops at 45° intervals; however, the viewing angle may be set
anywhere within a 180° arc.
To change the viewing angle, slide the release latch to the right and rotate the Temperature Controller to
the desired angle. The latch release will automatically return to the locked position at every 45° positive
stop.
Swivel 180™ Latch Release
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
FAIL POWER
lerts you to a temporary
loss of electrical power
key.
NOTE: The FAIL POWER message will also appear if the Circulator is turned OFF and then back ON
using only the Power Switch / Circuit Breaker on the rear of the unit.
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30
Inert Gas Purge
A 0.125 in. / 3 mm port on the rear of the Temperature Controller is provided to allow you to blanket the
surface of the liquid in the bath reservoir with nitrogen or another inert gas to help prevent condensation
and dilution of the bath fluid.
Tap Water Cooling
Tap water cooling allows for more rapid bath cool down from high temperatures and/or more precise
operation at temperatures near ambient.
Heat only Circulating Baths feature an integrated cooling coil as standard equipment. The tap water
connections are made on the rear of the unit. Two 0.25 inch / 6.4 mm female NPT fittings are provided for
these connections.
Polycarbonate Viscosity Baths feature a cooling coil with two 0.375 inch / 9.5 mm OD straight barb
fittings at which the fluid inlet and outlet connections can be made. Either connection may serve as the
fluid inlet or outlet. Be sure to secure the tubing with the appropriate size hose clamps.
An optional cooling coil is available for use on Stainless Steel Open Bath systems. This cooling coil has
two 0.375 inch / 9.5 mm OD straight barb fittings at which the fluid inlet and outlet connections can be
made. Either connection may serve as the fluid inlet or outlet. Be sure to secure the tubing with the
appropriate size hose clamps.
WARNING: The fluid outlet must be connected and flow to a suitable drain or vessel located at a
level below that of the inlet.
Reservoir Cover Storage
Refrigerating/Heating and Heat Only Circulating Baths feature the LidDock® system to eliminate mess
when adding fluid or samples to the reservoir. Specially positioned notches in the inner lip of the top deck
allow you to stand the reservoir cover up upright over the bath opening, allowing condensate to flow back
into the bath.
Lid Positioning
Notch
Lid Positioning
Notch
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31
Display Messages and Alarms
Message
and/or
Symbol
Description Corrective Action
FAIL POWER
(flashing)
(flashing)
Informational Message:
Indicates that electrical power
was lost during operation.
Warning: The temperature set
point is below the Low Limit
temperature value.
Warning: The temperature set
point is above the High Limit
temperature value.
Alarm: The bath temperature
has fallen below the Low Limit
temperature value. Power to
the compressor and pump will
remain OFF until the problem
is corrected.
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.
Alarm: 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.
Using the
key, turn the Circulator OFF and then back ON.
This will clear the message.
Decrease the Low Limit temperature value or increase the
temperature set point.
Increase the High Limit temperature value or decrease the set
point temperature.
Allow bath to warm or add heat load.
Decrease the Low Limit temperature value.
Allow bath to cool or increase High Limit temperature value.
Replace fluid.
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.
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Fault: The Circulator’s
temperature sensor has failed.
Fault: The Circulator’s heater
has failed.
Consult factory.
Consult factory.
32
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 Circulator to cool completely before cleaning
or performing any maintenance.
WARNING: Always drain all fluid from the reservoir before moving or lifting your Circulator. Be sure
to follow your organization’s procedures and practices regarding the safe lifting and relocation of
heavy objects.
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 Bath Algaecide (004-300040) should be used.
WARNING: Do not use chlorine bleach.
Draining the Bath Reservoir
WARNING: Bath fluids should be stored and disposed of according to applicable laws and
regulations.
Circulating Baths with the Standard Digital Temperature Controller are equipped with a drain valve and
port located either beneath the front access panel or on the right hand side of the unit.
To drain fluid from the bath, attach a short length of suitable 0.45 inch / 11.5 mm ID tubing to the drain
port and secure it using a hose clamp with a minimum ID of 0.7 inch / 18 mm. Open the drain valve using
a flat blade screwdriver. When closing the valve, do not over tighten.
WARNING: Be sure to close the drain valve before refilling the bath reservoir. Do not over tighten.
Drain Valve Drain Port
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33
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. Press
, 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. Using a small flat blade head screwdriver, slowly rotate the Safety Thermostat located on the rear of
the Temperature Controller counter-clockwise until you hear a soft click; the OVERTEMP or LOW
FLUID alarm message will appear and the alarm will sound. The heater should also turn OFF.
Safety Set
Reset access
Safety Set Thermostat
3. Press
to turn the Circulator OFF.
4. Rotate the Safety Thermostat clockwise a few degrees and then reset the Safety Set by inserting the
blade of the screwdriver or the end of a paperclip into the access slot and pressing until you hear the
Safety Set reset (an audible click).
5. Press
to turn the Circulator back ON and reset the Safety Set temperature to the desired
temperature value (see Controller Setup, Safety Set Temperature).
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34
Cleaning Your Circulator
r
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.
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.
Bath Reservoir
Bath Reservoir and Wetted Components — A concentrated bath cleaner (polyclean Bath Cleaner, part
number 004-300050) is available to remove mineral deposits from the stainless steel reservoir and 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.
CAUTION: Do not use steel wool to clean your Circulator’s bath reservoir.
External Surfaces — Only mild detergents and water or an approved cleaner should be used on the top
deck and other external surfaces of your Circulator. Do not allow cleaning liquids or sprays to enter the
vents on the rear of the Temperature Controller.
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.
Condenser, Air Vents, and Reusable Filter
(Refrigerating / Heating Circulators only)
To keep the refrigeration system operating at optimum cooling
capacity, the condenser, removable air filter, and all air vents (front,
side, back) should be kept free of dust and dirt. Be sure to check
them on a regular basis and clean as required.
The reusable filter is easily accessed from the front of the unit by
simply removing the access panel. Use a mild detergent and water
solution to wash off any accumulated dust and dirt. Rinse and dry
thoroughly before reinstalling.
Reusable
Filte
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35
Temperature Controller Removal and Re-Installation
Removal
The Temperature Controller on your Circulating Bath is designed to be easily removed from the top deck
without the use of special tools. It is removed as follows:
1. Place the tip of a small flat blade screwdriver under the retaining ring locking tab and pry up
gently.
Locking tab
2. Rotate the Temperature Controller clockwise until it stops (about 0.75 inch / 1.9 cm).
3. Lift the Controller straight up and out of the opening of the Circulator’s top deck.
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36
Re-Installation
The top deck of your Circulator incorporates four pins to facilitate positioning of the Temperature
Controller when it is being reinstalled. These pins correspond to keyhole slots on the interior of the
Circulator’s retaining ring.
1. With the retaining ring locking tab oriented above one of the indents on the top deck, slowly lower
the Temperature Controller into the top deck opening until it is resting on top of the positioning
pins.
Keyhole Slot (cutaway)
Locking Tab
Positioning Pins
(4 total)
Indent
2. Gently rotate the Temperature Controller until it drops down on the positioning pins.
3. Rotate the Temperature Controller counterclockwise until the Locking Tab engages the indent on
the top deck.
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37
Troubleshooting Chart
Problem Possible Causes Corrective Action
Unit does not run
No power to unit Check that the electrical cord is secure and
(Digital Display is
blank)
Unit does not run
Unit in Standby mode Press Power Key on front panel.
(STANDBY appears
on Digital Display)
No fluid circulation Insufficient fluid in reservoir
Pump impeller jammed
Insufficient circulation Fluid viscosity too high
External tubing diameter
too small
Low line voltage
Unit does not heat Insufficient fluid in reservoir
Temperature set point too
low
Safety Set Temperature too
low
Insufficient heating Insufficient circulation
Low line voltage
Ambient temperature too
cool
Excessive heat loss
connected to an operating electrical outlet.
Add fluid to reservoir.
Inspect pump and remove debris as required.
Replace with lower viscosity bath fluid.
Replace with larger diameter tubing.
Check and correct as required.
Add fluid to reservoir.
Increase temperature set point.
Increase Safety Set temperature.
See Insufficient Circulation, above.
Check and correct as required.
Increase ambient temperature or relocate unit.
Check for heat loss from external tanks and
hoses;
Check for vapor/heat loss from internal
reservoir.
Temperature
unstable
Insufficient circulation
Debris or mineral build-up
on pump, heater, or
temperature sensor.
Unit does not cool Dust build up on air filter or
condenser
Blocked air ventilation
screens
Temperature set point is
too high
Excessive heat load
Ambient air temperature too
high (>35°C / 95°F)
Low or high line voltage
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Check pump flow and operation.
Clean as required.
Clean air filter and/or condenser as required.
Remove blockages as required.
Decrease temperature set point.
Check that heat load does not exceed capacity
of bath; correct as required.
Decrease ambient air temperature.
Check and correct as required.
38
Problem Possible Causes Corrective Action
Insufficient cooling Dust build up on air filter or
condenser
Blocked air ventilation
screens
Temperature set point is
too high
Excessive heat load
Ambient air temperature too
high (>35°C / 95°F)
Low or high line voltage
Unable to achieve
low end extreme
temperatures
Pump speed too high
Incorrect bath fluid
Insufficient insulation on
external fluid lines
Ambient air temperature too
high (>35°C / 95°F)
Low or high line voltage
Dust build up on air filter or
condenser
Blocked air ventilation
screens
Excessive heat load
Clean air filter and/or condenser as required.
Remove blockages as required.
Decrease temperature set point.
Check that heat load does not exceed capacity
of bath; correct as required.
Decrease ambient air temperature.
Check and correct as required.
Reduce pump speed.
Check that the fluid being circulated is capable
of reaching the required temperature.
Check external fluid lines for proper insulation.
Decrease ambient air temperature as required.
Check and correct as required.
Clean air filter or condenser as required.
Remove blockages as required.
Check that heat load does not exceed capacity
of bath; correct as required.
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39
Technical Information
Performance Specifications
Operating Temperature Range: Model dependent; see table below
Temperature Stability: ±0.04C (±0.08°F)
Pump Type: 2-speed pressure
60Hz models
50Hz models
Maximum Pressure: 3.5 psi (0.24 bar) 2.9 psi (0.20 bar)
Maximum Pressure Flow Rate: 2.9 gpm (11.0 lpm) 2.7 gpm (10.2 lpm)
Heater Wattage: 1100 watts 2200 watts
Model Type
SD07R-20 Refrigerating / Heating Bath 7 liters
SD7LR-20 Refrigerating / Heating Bath 7 liters
SD15R-30 Refrigerating / Heating Bath 15 liters
SD20R-30 Refrigerating / Heating Bath 20 liters
SD28R-30 Refrigerating / Heating Bath 28 liters
SD07H170 Heating Only Bath 7 liters
SD15H170 Heating Only Bath 15 liters
SD20H170 Heating Only Bath 20 liters
SD28H170 Heating Only Bath 28 liters
SD29VB3S Polycarbonate Viscosity Bath 29 liters
SD29VB5R Polycarbonate Viscosity Bath 29 liters
Reservoir
Capacity
Temperature
Range
-20° to 170°C
-7° to 338°F
-20° to 170°C
-7° to 338°F
-30° to 170°C
-22° to 338°F
-30° to 170°C
-22° to 338°F
-30° to 170°C
-22° to 338°F
Ambient +10° to 170°C
Ambient +20° to 338°F
Ambient +10° to 170°C
Ambient +20° to 338°F
Ambient +10° to 170°C
Ambient +20° to 338°F
Ambient +10° to 170°C
Ambient +20° to 338°F
Ambient +10° to 85°C
Ambient +20° to 185°F
Ambient +10° to 85°C
Ambient +20° to 185°F
Electrical Requirements
60Hz Units 50Hz Units
120V, 60Hz,
120V, 60Hz,
120V, 60Hz,
120V, 60Hz,
120V, 60Hz,
120V, 60Hz,
120V, 60Hz,
120V, 60Hz,
120V, 60Hz,
120V, 60Hz,
(1)
120V, 60Hz,
(1)
12A
12A
13A
13A
13A
10A
10A
10A
10A
10A
10A
240V, 50Hz,
12A
240V, 50Hz,
12A
240V, 50Hz,
13A
240V, 50Hz,
13A
240V, 50Hz,
13A
240V, 50Hz,
10A
240V, 50Hz,
10A
240V, 50Hz,
10A
240V, 50Hz,
10A
240V, 50Hz,
10A
240V, 50Hz,
10A
1. Maximum working temperature for polycarbonate tank; Standard Digital Temperature Controller capable of higher
temperatures.
Environmental Conditions Indoor use only
Maximum Altitude: 2000 meter
Operating Ambient: 5° to 35°C (41° to 95°F)
Relative Humidity: 80%, non-condensing
Installation Category: II
Pollution Degree: 2
Ingress Protection: IP 31
Climate Class: SN
Software Class: B
Output Waveform: Sinusoidal
Specifications subject to change without notice.
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40
Reservoir Fluids
Depending on your needs, a variety of fluids can be used with your Circulator. No matter what bath fluid is
selected, it must be chemically compatible with the reservoir and the materials in your Circulator. It must
also be suitable for the desired temperature range.
WARNING: Do not use a flammable liquid as a bath fluid as a fire hazard may result.
WARNING: Always use fluids that satisfy safety, health, and equipment compatibility requirements.
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.
For optimum temperature stability, the fluid’s viscosity should be 50 centistokes (cSt) or less at its lowest
operating temperature. This permits good fluid circulation and minimizes heating from the pump.
For temperatures from 10°C to 90°C, distilled water is recommended. For temperatures below 10°C, a
mixture of laboratory grade ethylene glycol and water should be used. Do not use deionized water.
The following chart is intended to serve as a guide in selecting a bath fluid for your application. For
optimum temperature stability and low vaporization, be sure to stay within the fluid's normal temperature
range.
You are responsible for proper selection and use of the fluids. Avoid extreme range operation.
Viscosity
Fluid Description
distilled water 1 50°C 1.00 4.18 10° to 90°C 2° to 100°C
polyclear MIX 30 1 50°C 1.00 4.18 15° to 90°C 2° to 100°C
polytherm S150 50 100°C 0.41 1.71 50° to 150°C 5° to 270°C*
polytherm S200 125 150°C 0.40 1.67 100° to 200°C 80° to 232°C*
polytherm S250 500 200°C 0.39 1.63 150° to 250°C 125° to 260°C*
polytherm M170 40 85°C 0.40 1.67 50° to 170°C 25° to 190°C
polycool HC -50 3 -30°C 0.62 2.59 -50° to 100°C -62° to 118°C
polycool EG -25
(50/50 mix with distilled H
polycool EG -25
(30/70 mix with distilled H
polycool PG -20
(50/50 mix with distilled H
polycool PG -20
(30/70 mix with distilled H
polycool MIX -25
(50/50 mix with distilled H
polycool MIX -25
(30/70 mix with distilled H
2
2
2
2
2
2
O)
O)
O)
O)
O)
O)
(cSt)
@ 25°C
20 -20°C 0.78 3.26 -25° to 100°C -30° to 115°C
12 0°C 0.89 3.72 0° to 95°C -15° to 107°C
20 -10°C 0.83 3.47 -20° to 100°C -30° to 115°C
12 5°C 0.92 3.85 5° to 90°C -10° to 107°C
20 -20°C 0.78 3.26 -25° to 100°C -30° to 115°C
12 0°C 0.89 3.72 0° to 95°C -15° to 107°C
@ Fluid
Temperature
Specific Heat
BTU/lb°F KJ/Kg°C
Normal
Temperature
Range
Extreme
Temperature
Range
*WARNING: This is the fluid’s flash point temperature.
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41
WARNING: DO NOT USE THE FOLLOWING LIQUIDS:
Automotive antifreeze with additives**
Hard tap water**
Deionized water with a specific resistance > 1 meg ohm
Any flammable fluids
Concentrations of acids or bases
Solutions with halides: chlorides, fluorides, bromides, iodides or sulfur
Bleach (Sodium Hypochlorite)
Solutions with chromates or chromium salts
Glycerine
Syltherm fluids
**
At temperatures above 40°C, additives or mineral deposits can adhere to the heater. If deposits are allowed
to build up, the heater may overheat and fail. Higher temperatures and higher concentrations of additives
will hasten deposit build up.
Application Notes
At a fluid's low temperature extreme:
The presence of ice or slush adversely affects temperature stability.
A viscosity above 10 centistokes adversely affects temperature uniformity.
A high fluid viscosity and high pump speed adds heat to the fluid being pumped.
At a fluid's temperature above ambient without refrigeration:
If your set point temperature is less than 15°C above the ambient temperature, the
viscosity of the fluid should be 10 centistokes or less to minimize friction heating of the fluid.
Heat loss should be encouraged by uncovering the fluid and lowering the pump speed.
At fluid's high temperature extreme:
Heat loss from vapor adversely affects temperature stability.
To prevent the accumulation of vapors inside the room, the reservoir may need to be
placed in a fume hood.
Use a cover and/or floating hollow balls to help prevent heat and vapor loss.
Replenish fluid lost from vapor frequently.
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42
Tubing and Fitting Temperature Ranges
Material Temperature Range
Buna N tubing -40° to 120°C
Viton® tubing -32° to 200°C
Braided Teflon® tubing -50° to 225°C
Stainless steel fittings -45° to 225°C
Nylon fittings -40° to 90°C
Brass fittings -40° to 80°C
Fluid Compatibility
polycool EG -25 A A A B A B
polycool PG -20 A A A B B
polycool HC -50 B B A B B B
polytherm S150 B B A B B
polytherm S200 B B A B B
polytherm S250 B B A B B
polytherm M170) A A A A B
polycool MIX -25 A A A B A B
polyclear MIX 30 A A A A A A
A = Excellent B = Good
Buna N
Tubing
Viton
Tubing
Braided
Teflon
Tubing
Stainless
Steel Fittings
Nylon
Fittings
Brass
Fittings
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43
RS232 Communications
CAUTION: Always turn electrical power to the Circulator OFF before making a connection to the
serial (DB9) port.
Serial Connector — A DB9 connector is provided on the back panel of the Controller for RS232 data
communication.
Pin RS232
1
2 TX
3 RX
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9
Serial Communications Protocol — The Controller uses the following serial communications settings:
Data bits — 8
Parity — None
Stop bits — 1
Flow control — None
Baud rate — Selectable (Controller/PC baud rates must match). 57600 is recommended.
Communications Commands — RS232 commands must be entered using the command only. All
commands must be entered in the exact format shown. Do not send a [LF] (line feed) after the [CR]
(carriage return). Be sure to follow character case exactly.
A response followed by an exclamation point (!) indicates that a command was executed correctly. A
question mark (?) indicates that the Controller could not execute the command (either because it was in
an improper format or the values were outside the allowable range). A response must be received from
the Controller before another command can be sent. All responses are terminated with a single [CR].
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Command Format Values
Return
Message
Set Command Echo SEi[CR]
Echo: i = 1
No Echo: i = 0
![CR]
Set Set Point SSiii.i[CR] i = any integer from 0-9 ![CR]
Set On Off SOi[CR]
On: i = 1
Off: i = 0
![CR]
Set High Alarm SHiii[CR] i = any integer from 0-9 ![CR]
Set Low Alarm SLiii[CR] i = any integer from 0-9 ![CR]
Set Pump Speed SMi[CR]
Low: i = 1
High: i = 2
![CR]
Read Set Point Temperature RS[CR] iii.i[CR]
Read Units of Operation RU[CR] C[CR] or F[CR]
Read Internal Temperature RT[CR] iii.i[CR]
Read Operating Status RO[CR]
Running: i = 1
Standby: i = 0
i[CR]
Read High Alarm Setting RH[CR] iii[CR]
Read Low Alarm Setting RL[CR] iii[CR]
Read Pump Speed RM[CR]
Read Alarm Status RF[CR]
Low: i = 1
High: i = 2
No Faults: i = 0
Fault: i = 1
i[CR]
i[CR]
Read the Auto-Cool Set Point RA[CR] ii[CR]
Read the Firmware Version RB[CR] viiii[CR]
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Equipment Disposal (WEEE Directive)
or
This equipment is marked with the crossed out wheeled bin symbol to indicate it is covered by the Waste
Electrical and Electronic Equipment (WEEE) Directive and is not to be disposed of as unsorted municipal
waste. Any products marked with this symbol must be collected separately, according to the
regulatory guidelines in your area.
It is your responsibility to correctly dispose of this equipment at lifecycle-end by handing it over to an
authorized facility for separate collection and recycling. It is also your responsibility to decontaminate the
equipment in case of biological, chemical and/or radiological contamination, so as to protect the persons
involved in the disposal and recycling of the equipment from health hazards. By doing so, you will help to
conserve natural and environmental resources and you will ensure that your equipment is recycled in a
manner that protects human health.
Requirements for waste collection, reuse, recycling, and recovery programs vary by regulatory authority
at your location. Contact your local responsible body (e.g., your laboratory manager) or authorized
representative for information regarding applicable disposal regulations.
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Replacement Parts and Accessories
Description
IEC to IEC Power Cord (Refrigerating/Heating Circulators) 120V, 60Hz 225-661
IEC to Mains Power Cord, U.S. plug type, 120V, 60Hz
(7 to 28 liter Refrigerating/Heating Circulators)
IEC to Mains Power Cord, European plug type, 240V, 50Hz
(Refrigerating/Heating Circulators)
IEC to Mains Power Cord, U.S. plug type, 120V, 60Hz (Heating Circulators) 225-227
IEC to Mains Power Cord, European plug type, 240V, 50Hz (Heating Circulators) 225-228
Refrigeration Control Cable (Refrigerating/Heating Circulators) 225-651
Reservoir Cover for 7L Refrigerating/Heating and Heat only Circulators 510-726
Reservoir Cover for 15L Refrigerating/Heating and Heat only Circulators 510-727
Reservoir Cover for 20L Refrigerating/Heating and Heat only Circulators 510-728
Reservoir Cover for 28L Refrigerating/Heating and Heat only Circulators 510-729
Lid for Viscosity Tube Opening, round, 2.25 inch diameter 300-760
Lid for Viscosity Tube Opening, square, 3.5 inch 300-758
Viscosity Bath Top with 5 round holes and hole covers (for 29L Viscosity Bath) 510-707
Viscosity Bath Top with 9 round holes and hole covers (for 29L Viscosity Bath) 510-708
Part
Number
225-473
225-346
Viscosity Bath Top with 3 square holes and hole covers (for 29L Viscosity Bath) 510-709
Bypass Tubing Kit, Buna N 510-711
Bypass Tubing Kit, Viton 510-495
Teflon-lined Tubing, stainless steel overbraid 060310
RS232 Cable 225-173
Fitting, ¼” male NPT to 1/8” (3 mm) hose barb, brass (set of 2) 060306
Fitting, ¼” male NPT to 3/16” (5 mm) hose barb, stainless steel (1 each) 776-204
Fitting, ¼” male NPT to 3/16” (5 mm) hose barb, nylon (1 each) 300-049
Fitting, ¼” male NPT to 3/16” (5 mm) hose barb, brass (1 each) 776-193
Fitting, ¼” male NPT to ¼” (6 mm) hose barb, nylon (1 each) 300-048
Fitting, ¼” male NPT to ¼” (6 mm) hose barb, brass (1 each) 776-194
Fitting, ¼” male NPT to ¼” (6 mm) hose barb, stainless steel (1 each) 776-203
Fitting, ¼” male NPT to 5/16” (8 mm) hose barb, stainless steel (1 each) 775-125
Fitting, ¼” male NPT to 5/16” (8 mm) hose barb, brass (set of 2) 060306
Fitting, ¼” male NPT to 3/8” (9.5 mm) hose barb, stainless steel (1 each) 776-202
Fitting, ¼” male NPT to 3/8” (9.5 mm) hose barb, nylon (1 each) 300-047
Fitting, ¼” male NPT to 3/8” (9.5 mm) hose barb, brass (1 each) 776-195
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Description
Part
Number
Fitting, ¼” male NPT to M16 x 1, stainless steel (1 each) 775-290
Fitting, M16 x 1 female to 8 mm (1/4”) hose barb, brass (1 each) 776-191
Fitting, M16 x 1 female to 12 mm (7/16”) hose barb, brass (1 each) 776-192
Fitting, ½” male NPT x ½” (13 mm) hose barb, nylon (for integrated cooling coil) (1 each) 300-096
Flow Adapter, 2 ports with shutoffs. ¼” male NPT x two ¼” (6 mm) hose barbs, brass 510-666
Digital to Analog Adapter, 10 mV 215-471
Reusable Air Filter for SD7LR-20 Refrigerating/Heating Circulator 305-057
Reusable Air Filter for SD07R-20 Refrigerating/Heating Circulator 305-054
Reusable Air Filter for SD15R-30 and SD20R-30 Refrigerating/Heating Circulators 305-055
O-Ring, Drain Valve (for Refrigerating/Heating and Heat only Circulators) 400-934
Drain Cap for Polycarbonate Viscosity Baths 510-756
Display Module Assembly 510-530
Bezel for Display 300-676
Circuit Breaker / Power Switch 215-330
Leveling Glide; Refrigerating/Heating and Heat only Circulators 400-814
Plastic Foot; Stainless Steel Open Baths 400-063
Resource Disk (with Operator’s Manual) 110-815
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PolyScience Circulating Bath Fluids
Circulating Bath Fluids Quantity Part Number
polyclean Algaecide 8 oz / 236 ml 004-300040
polyclean Algaecide Twelve 8 oz / 236 ml bottles 004-300041
polyclean Bath Cleaner 8 oz / 236 ml 004-300050
polyclean Bath Cleaner Twelve 8 oz / 236 ml bottles 004-300051
polycool EG -25 (ethylene glycol) 1 gal / 4.5 liter 060340
polycool PG -20 (propylene glycol) 1 gal / 4.5 liter 060320
polycool HC -50 (water-based heat transfer fluid) 1 gal / 4.5 liter 060330
polytherm S150 (silicone oil) 1 gal / 4.5 liter 060326
polytherm S200 (silicone oil) 1 gal / 4.5 liter 060327
polytherm S250 (silicone oil) 1 gal / 4.5 liter 060328
polytherm M170 (mineral oil) 1 gal / 4.5 liter 060321
polycool MIX -25
(50/50 blend polycool EG -25 / H2O plus polyclean
algaecide)
Five 0.5 gal / 2.27 liter 004-300060
polyclear MIX 30
(distilled water plus polyclean algaecide)
Five 0.5 gal / 2.27 liter
004-300062
Service and Technical Support
If you have followed the troubleshooting steps outlined previously and your Circulator still fails to operate
properly, contact the supplier from whom the unit was purchased. Have the following information
available for the customer service person:
Model, Serial Number, and Voltage (from back panel label)
Date of purchase and purchase order number
Supplier’s order number or invoice number
A summary of the problem
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Warranty
The manufacturer agrees to correct for the original user of the product, either by repair (using new or
refurbished parts), or at the manufacturer’s election, by replacement (with a new or refurbished product),
any defects in material or workmanship which develop during the warranty period. The standard warranty
is twenty-four (24) months after delivery of the product. In the event of replacement, the replacement unit
will be warranted for the remainder of the original warranty period or ninety (90) days, whichever is
longer. For purposes of this limited warranty, “refurbished” means a product or part that has been
returned to its original specifications. In the event of a defect, these are your exclusive remedies.
If the product should require service, contact the manufacturer’s/supplier’s office for instructions. When
return of the product is necessary, a return authorization number is assigned and the product should be
shipped, transportation charges pre-paid, in either its original packaging or packaging affording an equal
degree of protection to the indicated service center. To insure prompt handling, the return authorization
number must be placed on the outside of the package. A detailed explanation of the defect should be
enclosed with the item.
The warranty shall not apply if the defect or malfunction was caused by accident, neglect, unreasonable
use, improper service, acts of God, modification by any party other than PolyScience, or other causes not
arising out of defects in material or workmanship.
EXCLUSION OF IMPLIED WARRANTIES. THERE ARE NO WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, THOSE OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE WHICH EXTEND BEYOND THE DESCRIPTION AND PERIOD AS STATED
IN THE OPERATOR’S MANUAL INCLUDED WITH EACH PRODUCT.
LIMITATION ON DAMAGES. THE MANUFACTURER’S SOLE OBLIGATION UNDER THE WARRANTY
IS LIMITED TO THE REPAIR OR REPLACEMENT OF A DEFECTIVE PRODUCT AND POLYSCIENCE
SHALL NOT, IN ANY EVENT, BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES
OF ANY KIND RESULTING FROM USE OR POSSESSION OF THIS PRODUCT.
Some states do not allow: (A) limitations on how long an implied warranty lasts; or (B) the exclusion or
limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to
you. This warranty gives you specific legal rights and you may have other rights that vary from state to
state.
Manufactured by:
PolyScience
6600 W. Touhy Avenue Niles, IL 60714 U.S.A.
1-800-229-7-847-647-0611
www.polyscience.com
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