Cole-Parmer 20872-95, 20872-96, 20872-97, 20872-98, 20872-99 Instruction Manual
...
User Manual
Cole-Parmer® Polystat® Circulating Baths
with Programmable Temperature Controller
Model No. 20872-95, 20872-96, 20872-97, 20872-98, 20872-99, 20873-00, 20873-01,
20873-02, 20873-03, 20873-04, 20873-05, 20873-06, 20873-07, 20873-08, 20873-09,
20873-10, 20873-11, 20873-12, 20873-13, 20873-14, 20873-15, 20873-16, 20873-17,
20873-18, 20873-19, 20873-20, 20873-91, 20873-92, 20873-93, 20873-94, 20873-95,
20873-96, 20873-97, 20873-98
1
Table of Contents
Introduction ................................................................................................................................................. 4
Circulating Baths with Performance Programmable Temperature Controller .......................................... 5
General Safety Information ....................................................................................................................... 6
Safety Recommendations......................................................................................................................... 7
Regulatory Compliance & Testing ............................................................................................................ 8
Unpacking Your Circulator ........................................................................................................................ 9
Contents ................................................................................................................................................... 9
Controls & Components.......................................................................................................................... 10
Performance Programmable Controller.............................................................................................. 10
Refrigerating/Heating Baths ............................................................................................................... 11
Heating Only Baths............................................................................................................................. 12
Calibration Baths ................................................................................................................................ 13
Quick-Start ................................................................................................................................................. 14
Installation & Startup ................................................................................................................................ 15
General Site Requirements .................................................................................................................... 15
Adding Liquid to the Bath Reservoir ....................................................................................................... 16
Pump Inlet and Outlet Connections ........................................................................................................ 17
External Closed Loop Circulation ........................................................................................................... 17
Open Loop Circulation ............................................................................................................................ 18
Refrigeration Control Connections (Refrigerating/Heating Circulators only) .......................................... 19
Electrical Power ...................................................................................................................................... 19
Refrigerating / Heating Circulators ..................................................................................................... 19
Heat Only Circulators and Open Bath Systems ................................................................................. 20
Communication ....................................................................................................................................... 21
USB Communication .......................................................................................................................... 22
Ethernet .............................................................................................................................................. 22
RS232 / RS485 Serial Communication .............................................................................................. 22
External (P2) Temperature Probe .......................................................................................................... 22
Controller Setup ........................................................................................................................................ 23
Power ...................................................................................................................................................... 23
Safety Set Temperature.......................................................................................................................... 23
Basic Operation ......................................................................................................................................... 25
Turning Your Circulator On ..................................................................................................................... 25
Controller & Touch Screen Navigation ................................................................................................... 25
Controller Navigation .......................................................................................................................... 25
Touch Screen Navigation ................................................................................................................... 25
Menu Structure ....................................................................................................................................... 27
Main Operational Displays (Home Screens) .......................................................................................... 28
Status Bar ........................................................................................................................................... 28
Home Screens .................................................................................................................................... 29
Adjusting the Temperature Set Point ...................................................................................................... 30
General Operational Settings ................................................................................................................. 32
Pump Speed ....................................................................................................................................... 33
Unit ..................................................................................................................................................... 33
Sound ................................................................................................................................................. 33
Language ............................................................................................................................................ 33
Display ................................................................................................................................................ 33
Lock Out ............................................................................................................................................. 33
Auto Restart ........................................................................................................................................ 33
Personalize ......................................................................................................................................... 33
Display Filter ....................................................................................................................................... 34
SHC (Specific Heat Capacity) ............................................................................................................ 34
2
Time and Date Settings .......................................................................................................................... 34
Time .................................................................................................................................................... 34
Date .................................................................................................................................................... 34
Safety Settings ........................................................................................................................................ 35
High Limit / Low Limit Temperatures .................................................................................................. 35
High Alarm / Low Alarm Temperatures .............................................................................................. 35
Control .................................................................................................................................................... 36
Probe Control ..................................................................................................................................... 36
Auto Cool ............................................................................................................................................ 36
Fluid Type ........................................................................................................................................... 37
P2 - P1 ................................................................................................................................................ 37
PID ...................................................................................................................................................... 37
External Cooling Control .................................................................................................................... 38
Send Internal Data USB/WEB ............................................................................................................ 38
Reset Memory and Reboot ................................................................................................................ 38
Communications and Data Logging ....................................................................................................... 38
Ethernet .............................................................................................................................................. 38
RS232 ................................................................................................................................................. 39
USB .................................................................................................................................................... 39
RS485 ................................................................................................................................................. 39
Timer ....................................................................................................................................................... 40
Enabling / Disabling the Local Lock Out ................................................................................................. 41
Advanced Operation ................................................................................................................................. 42
Time/Temperature Programming ........................................................................................................... 42
Creating a Temperature Program ...................................................................................................... 42
Previewing a Program ........................................................................................................................ 45
Running a Program ............................................................................................................................ 46
Editing a Program ............................................................................................................................... 47
Saving and Uploading Programs ........................................................................................................ 48
Event Scheduling .................................................................................................................................... 51
Creating and Installing a Personalized Home Screen ............................................................................ 53
Circulator Monitoring and Control Using an Internet Browser ................................................................ 54
Calibration.................................................................................................................................................. 55
Restoring All Factory Default Values ...................................................................................................... 57
System Restoration .................................................................................................................................. 57
Changing Your Circulator's Viewing Angle ............................................................................................ 58
Inert Gas Purge ......................................................................................................................................... 58
Tap Water Cooling .................................................................................................................................... 58
Reservoir Cover Storage .......................................................................................................................... 59
Routine Maintenance & Troubleshooting ............................................................................................... 60
Service Sub-Menu .................................................................................................................................. 60
Diagnostic Data Logging......................................................................................................................... 61
Maintaining Clear Bath Water ................................................................................................................. 61
Draining the Bath Reservoir ................................................................................................................... 62
Checking the Over-Temperature / Low Liquid Level Safety Systems .................................................... 63
Cleaning Your Circulator......................................................................................................................... 64
Temperature Controller Removal and Re-Installation ............................................................................ 65
Removal ............................................................................................................................................. 65
Re-Installation ..................................................................................................................................... 66
Calibrating the Touch Screen ................................................................................................................. 67
Display Module Firmware Updates ......................................................................................................... 67
Warning and Fault Messages ................................................................................................................. 68
Warnings ............................................................................................................................................ 68
3
Faults .................................................................................................................................................. 69
Troubleshooting Chart ............................................................................................................................ 70
Technical Information ............................................................................................................................... 72
Performance Specifications .................................................................................................................... 72
Reservoir Fluids ...................................................................................................................................... 73
Application Notes .................................................................................................................................... 75
Tubing and Fitting Temperature Ranges ................................................................................................ 75
Fluid Compatibility .................................................................................................................................. 75
RS232/RS485 Communications ............................................................................................................. 76
Remote ON / OFF ................................................................................................................................... 78
USB Data Logging .................................................................................................................................. 78
USB B Setup, Monitoring, and Control ................................................................................................... 79
Ethernet Configuration ............................................................................................................................ 79
Direct Computer to Controller Configuration ...................................................................................... 79
Wired or Wireless Network Configuration .......................................................................................... 80
TCP Control Configuration ................................................................................................................. 81
External Cooling Control ......................................................................................................................... 82
Equipment Disposal (WEEE Directive) ................................................................................................... 84
Equipment Disposal (WEEE Directive) ................................................................................................... 84
Service & Technical Support ................................................................................................................... 85
Warranty ..................................................................................................................................................... 85
4
Introduction
Thank you for choosing this Circulating Bath with Programmable Temperature Controller. 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: Cole-Parmer 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:
• Intuitive touch screen operation
• Open-mode time/temperature programming (no restriction on the number of programs or
steps)
• Selection of seven different temperature displays, including time-temperature graphing
• Powerful variable-speed pressure/suction pump with external circulation capability
• 180° viewing radius rotating control head
• Heat and chemical resistant top plate
• Self-storing reservoir cover (integrated baths only)
• Built-in temperature protection
• Suitable for use with Class III flammable bath fluids per DIN 12876-1
It will take you very little time to get your new Circulating Bath installed and running. This User’s Manual is
designed to guide you quickly through the process. We recommend that you read it thoroughly before you
begin.
All product names, trademarks and registered trademarks are property of their respective owners.
5
20872-99 & 20873-00 Heating Only
15 liter
Ambient +10° to 200°C
Ambient +20° to 392°F
Circulating Baths with Programmable Temperature Controller
Model Type
Reservoir
Capacity
20873-05 & 20873-06 Refrigerating/Heating 7 liter -20° to 200°C -4° to 392°F
20873-09 & 20873-10 Refrigerating/Heating 7 liter -40° to 200°C -40° to 392°F
20873-07 & 20873-08 Refrigerating/Heating 7 liter -20° to 200°C -4° to 392°F
20873-11 & 20873-12 Refrigerating/Heating 15 liter -30° to 200°C -22° to 392°F
20873-13 & 20873-14 Refrigerating/Heating 15 liter -40° to 200°C -40° to 392°F
20873-15 & 20873-16 Refrigerating/Heating 20 liter -30° to 200°C -22° to 392°F
20873-17 & 20873-18 Refrigerating/Heating 28 liter -30° to 200°C -22° to 392°F
20873-19 & 20873-20 Refrigerating/Heating 45 liter -25° to 135°C
20872-97 & 20872-98 Heating Only 7 liter Ambient +10° to 200°C Ambient +20° to 392°F
20873-01 & 20873-02 Heating Only 20 liter Ambient +10° to 200°C Ambient +20° to 392°F
20873-03 & 20873-04 Heating Only 28 liter Ambient +10° to 200°C Ambient +20° to 392°F
20873-97 & 20873-98 Stainless Steel Open Tank 10 liter Ambient +10° to 150°C
20873-91 & 20873-92 Polycarbonate Open Tank 8 liter Ambient +10° to 85°C
20873-93 & 20873-94 Polycarbonate Open Tank 14 liter Ambient +10° to 85°C
20873-95 & 20873-96 Polycarbonate Open Tank 23 liter Ambient +10° to 85°C
20872-95 & 20872-96 Refrigerating/Heating
Calibration Bath
1. Maximum operating temperature at which ±0.005°C temperature stability can be maintained; Programmable Controller is capable of higher
temperatures.
2. Maximum operating temperature for stainless steel tank. P rogrammable Controller is capable of higher temperatures.
3. Maximum operating temperature for polycarbonate tank. Programmable Controller is capable of higher temperatures.
15 liter
-30° to 200°C -22° to 392°F
Temperature Range
°C °F
(1)
-13° to 275°F
(2)
Ambient +20° to 302°F
(3)
Ambient +20 to 185°F
(3)
Ambient +20 to 185°F
(3)
Ambient +20 to 185°F
(1)
(2)
(3)
(3)
(3)
6
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.
Read all instructions pertaining to safety, set-up, and operation.
Proper operation and maintenance is the user’s responsibility.
7
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 for use with Class III flammable fluids per DIN 12876-1. A fire
hazard may be present.
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.
Explosive gas mixtures may accumulate if used with insufficient ventilation. Use this Circulating
Bath in a well ventilated area or beneath a suitable fume hood only.
Use only recommended bath fluids; see Technical Information in the rear of this manual for
recommended fluids.
Use only non-acid bath fluids.
WARNING: When using Class III flammable fluids per DIN 12876-1, the user must attach the
following warning labels to the front of the unit so that they are well visible:
Warning Label
W09
Colors: Yellow/black
Mandatory Label
M018
Colors: Blue/white
or
Semi S1-0701
Table A1-2 #9
Colors: Blue/white
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 type 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.
Danger Area.
Attention! Observe instructions
(operating manual, safety data sheet)
Carefully read the user information prior to
beginning operation.
Scope: EU
Carefully read the user information prior to
beginning operation.
Scope: NAFTA
8
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 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.
Regulatory Compliance & Testing
Canada USA (60 Hz units)
Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, Part 1:
General Requirements (CAN/CSA C22.2 No. 61010-1-12)
Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, Part 1:
General Requirements (UL 61010-1:2012)
Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, Part 2-010:
Particular Requirements for Laboratory Equipment for the Heating of Materials (CSA 61010-2-010:15)
Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, Part 2-010:
Particular Requirements for Laboratory Equipment for the Heating of Materials (UL 61010-2-010:2015)
Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, Part 2-051:
Particular Requirements for Laboratory Equipment for Mixing and Stirring (CSA 61010-2-051:15)
Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, Part 2-051:
Particular Requirements for Laboratory Equipment for Mixing and Stirring (UL 61010-2-051:2015)
CE (50 Hz units)
Machinery Directive 2006/42/EC
EC Electromagnetic Compatibility Directive 2014/30/EU
RoHS Directive 2011/65/EU
IEC 61010-1/EN 61010-1:2010
IEC 61010-2-010/EN 61010-2-010:2014
IEC 61010-2-051/EN 61010-2-051:2015
IEC 61326:2012/EN 61326:2013
9
Reservoir Cover(s)
Cooling Coil
N/A
Integral
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.
WARNING: Keep unit upright when moving. Be sure to follow your company’s procedures and
practices regarding the safe lifting and relocation of heavy objects.
Contents
The items included with your Circulator will vary depending on which model Circulating Bath you
purchased.
Refrigerating / Heating Bath Heating Only Bath
Resource Disk with User’s
Manual
3-ft / 0.91 m IEC to IEC
Power Cord
6-ft / 1.82 m IEC to Mains
Power Cord
Refrigeration Control Cable ●
Fittings
Bath Lid Sleeves
Certificate of Compliance ● ●
Flash Drive
Pt100 External Temperature
(3)
Probe
Quick-Start Guide
1. 60Hz and 50Hz models
2. 50Hz models only
3. Included only with Calibration Baths
(3)
Two each 3 mm, 4 mm, and 6 mm openings
● ●
● ●
●
● ●
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
1/4 in. NPT to M16 barbed adapter
● ●
● ●
● ●
(1)
(1)
(2)
(1)
10
Touch Screen Display
Set Key
Menu Key
Power Key
Home Key
IEC Power Cord
Power Switch /
Circuit Breaker
Refrigeration
on
Heating
s)
Safety Set
Thermostat
Refrigeration Control
Connection
Refrigerating
Circulators only)
Fluid Inlet
Connection
RS232/RS485
Serial Port
Fluid Outlet Connection
Inert Gas Injection Port
IEC Electrical
ction
Bypass Tubing
USB A Connection
External (P2)
Ethernet Connection
USB B Connection
Swivel Latch
Release
Controls & Components
Programmable Controller
(located on
Refrigerating/
Power Module
Circulator
Conne
Temperature Probe
Connection
(functional on
/Heating
11
Programmable Temperature
Controller
Reservoir Cover
Reservoir Drain Valve and Port
)
8
Washable Air Filter
(behind access panel)
Refrigeration Power
Module
Refrigeration Control
Connection
Power Switch / Circuit Breaker
IEC Electrical Connection
to Mains
Refrigeration
Control Connection
IEC Power Connection to
Refrigeration Module
Drain Valve and Port
(right sid
ooling System Status Display
IEC Power Connection
to Controll
Power
Cooling
Fan
Cooling Fault
Refrigerating/Heating Baths
Side access on 20873-07 & 20873-0
(behind access panel
e on 20873-07 & 20873-08)
er
C
12
Programmable Controller
Reservoir Cover
Reservoir Drain and Port
ind access panel)
Tap Water Cooling
C
Tap Water Cooling
onnection (inlet)
Power Switch / Circuit Breaker
IEC Power Connection to
Mains
Heating Only Baths
(beh
C
onnection (outlet)
13
Reservoir Drain Valve and
Port (behind access panel)
Reusable Air Filter
(behind access panel)
Refrigerating/Heating
ly
Remote/External
Temperature
Probe (P2)
Programmable Controller
Calibration Bath Lid with
penings for
thermometers and
temperature sensors
diameter
WARNING: To avoid the potential for burns, allow the Circulator to cool completely before cleaning
or performing any maintenance.
Calibration Baths
sleeved o
2 to 8 mm in
models on
14
Refrigerating / Heating
IEC power cord
ler
to Refrigeration
Power Module
Refrigeration control
cable
Heating only models
Maximum: 1 in. / 2.54 cm
be
Minimum: 3.0 in. / 7.6 cm
below un
Heating only models
Refrigerating / Heating
Quick-Start
Unless otherwise specified, quick-start instructions apply to all models.
See Installation & Startup for additional information.
low underside of top deck
1 Fill reservoir with fluid
2A
Connect all electrical power cords
and control cables
2B
derside of top deck
from Control
models
3A
3B
Place Power Switch / Circuit
Breaker in ON position
models
15
4 Turn Controller “ON”
5 Set safety thermostat
6 Set Temperature Set Point
Installation & Startup
Your Circulating Bath with Programmable Temperature Controller is designed to be simple to set-up and
install. The only tools required are a Philips-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.
16
Maximum Fluid Level =
1 inch / 2
underside of top deck
Minimum Fluid Level =
m
below underside of top
deck
Adding Liquid to the Bath Reservoir
WARNING: When using Class III flammable fluids per DIN 12876-1, the user must attach the
following warning labels to the front of the unit so that they are well visible:
Warning Label
W09
Colors: Yellow/black
Mandatory Label
M018
Colors: Blue/white
or
Semi S1-0701
Table A1-2 #9
Colors: Blue/white
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).
Danger Area.
Attention! Observe instructions
(operating manual, safety data sheet)
Carefully read the user information prior to
beginning operation.
Scope: EU
Carefully read the user information prior to
beginning operation.
Scope: NAFTA
The liquid in the reservoir should be maintained at a depth between 1 inch / 2.54 cm and 3.0 inches / 7.6
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.
.54 cm below
3.0 inches / 7.6 c
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.
17
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 (13mm) ID tubing may also be slid over these connections and
held in place with a hose clamp.
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 PTFE 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.
18
Open Loop Circulation
The duplex (pressure/suction) pump permits circulation to and from an external open bath. To prevent
siphoning when the Circulating Bath is turned off, position both baths so that the two fluid levels are at the
same elevation.
Connect the pump inlet and outlet to the
external bath using tubing of the same
diameter and length. The same size fittings
should also be used on both the inlet (suction)
and outlet (pressure). This helps ensure a
balanced flow. A restricting valve or pinch clip
should be installed in the pressure (outlet)
tubing and adjusted to match the return
suction (inlet) flow rate. Cut the external end
of the suction tube into a “V” shape so that the
tube will not seal itself against the wall of the
external tank. Both the pressure and suction
tubing should be securely fastened to the
external tank to prevent movement during use.
When using flexible tubing, the suction tubing
must have a wall thickness that will not collapse under vacuum, particularly when going around bends.
Circulating Bath Height Regulation — Position the ends of the pressure and suction tubes at the desired
maximum fluid level in the external bath and fill the bath to that level. Fill the Circulating Bath to a height
one inch (25mm) below the top of the reservoir. Start the pump and adjust the restricting valve/pinch clip
on the outlet tubing until the liquid height in both baths remains constant. Add fluid to the baths as needed
to compensate for the fluid in the inlet and outlet lines.
19
Refrigeration Control
C
Refrigeration Control
Connection
Refrigeration Control
Cable
Refrigeration Control Connections (Refrigerating/Heating Circulators only)
onnection
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. An hour
glass will appear on the Temperature Controller’s display while the Circulator completes an initialization
sequence. Once completed, “Standby” will appear on the display; the Power Key will also light.
20
IEC Power Connection to
Refrigeration Power Module
IEC Power Connection to Mains
IEC to IEC Power Cord
Refrigeration
Power Module
IEC Power
Connection to
Controller
IEC to Mains Power Cord
Power Switch /
Circuit Breaker
Heat Only Circulators and Open Bath Systems
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 display
on the Controller will light and “Standby” will appear on the display; the Power Key will also light.
21
Communication
The Programmable Controller features a variety of connectivity options. Following are some typical ways
you can use them to monitor and control the operation of your Circulator.
22
USB Communication
Two USB ports (A and B) are provided on the rear of the Temperature Controller for use with USB flash
drives to log temperature data and store and/or transfer time/temperature programs. See Basic
Operation, Communications and Data Logging for more information.
Ethernet
An Ethernet port is provided on the back of the Temperature Controller to enable you to connect your
Circulator to a computer network.
RS232 / RS485 Serial Communication
CAUTION: Always turn electrical power to the Circulator OFF before making a connection to the
serial (DB9) port.
Your Circulator features RS232 / RS485 serial communication for remote data logging and control
capability. A DB9 connector is provided on the rear of the Temperature Controller for this purpose. See
Basic Operation, Communications and Data Logging for set up information.
The serial interface should be connected to a serial communication port on a remote PC using an
appropriate cable. Information on the RS232 / RS485 commands and communication protocol can be
found in the Technical Information section of this manual.
External (P2) Temperature Probe
Your Circulator is capable of controlling temperature based on either the temperature of the internal bath
or that of an external vessel or device. The connection for the optional external temperature probe is on
the rear of the Temperature Controller. The Temperature Controller automatically detects the external
temperature probe when it is connected. See Replacement Parts & Accessories for other available
lengths and part numbers.
IMPORTANT NOTE FOR CALIBRATION BATHS: The PT100 external temperature probe should be
inserted in the calibration reservoir.
Pin Out Diagrams — External (P2) Temperature Probe Connection
MAXIMUM OPERATING TEMPERATURE @ 200 C, CLASS A 0.003850 OHMS/DEGREES C.
RTD SENSOR: 4 WIRE CIRCUIT, 100 OHMS @ 0 DEGREES C,
23
Controller Setup
Power
Press . “Initializing” will appear briefly on the display, the Circulator will begin running, and the default
Main Run screen will appear.
Safety Set Temperature
NOTE: The Safety Set Temperature is displayed and set in whichever temperature unit is currently
selected. The default is °C. To set the temperature using °F, see General Operational Settings, Unit.
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 simple 4-step procedure.
WARNING: The Safety Thermostat is user-adjustable from approximately 40° to 240°C / 104° to 464°F.
Do not force the indicator dial beyond the stops at either end of the dial’s range.
1. Press to access the Main menu.
2. Touch the Safety icon to access the Safety sub-menu.
24
Safety Set
Temperature
Safety Set
Thermost
Current Safety
Probe read
3. Using a small, Philips head screwdriver, rotate the
Safety Set Thermostat on the rear of the
Temperature Controller until the desired Safety Set
Temperature is displayed (clockwise to increase;
counter-clockwise to decrease).
ing
at
4. Press the icon or the
Main Menu.
key to return to the
25
POWER –
Turns the Circulator’s
Temperature Controller ON
F.
HOME --
ns the to the Main Operational
ny screen
Toggles through available
Home screens.
MENU --
Accesses th
Controller’s Main Menu (fr
screen)
SET --
Used in conjunction with various screen
change the set point
temperature
Accesses associated
menu
Return to Main Run
n (Home screen)
Status Bar – Appears on all screens
Basic Operation
Turning Your Circulator On
Press the key.
The Circulator will begin running and the Main Operational Display (Home) will appear.
Controller & Touch Screen Navigation
Controller Navigation
Retur
Display (Home) from a
and OF
icons and buttons to
e Temperature
om any
Touch Screen Navigation
Main Menu
Press to access.
sub-
scree
26
Previous Menu
Information –
ems
Next Page
Previous Page
Sub-Menu Item --
Toggles between
available choices
Current Setting (white
letters on blue field)
Alternate Setting
(blue l
field)
Cancel -- Cancels
g
Accept --
a
setting
Decreases Value
Increases Value
Current Setting (more than two
settings available)
other available selections
Sub-Menus
NOTE: The following examples are intended to illustrate how commonly used touch screen icons
function when displayed. A specific icon may or may not be displayed on a sub-menu page. The
function/operation of icons not shown here are described in the sections associated with the screens
on which they appear.
etters on white
Help regarding sub-menu it
change to a settin
Accepts change to
CAUTION: The menu and sub-menu screens time-out and revert to the Main Operational Display
(Home Screen) after approximately 30 seconds without any touch screen interaction. Any changes
made will take effect automatically.
– Touch to access
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