Brookfield TC-602 User Manual
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110-242 3/10/09
1
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Section 1 - General Information
1.1 Unpacking
1.2 Contents
1.3 General Description
Section 2 - Circulator Pump Connections
and Setup
2.1 Circulator Pump
2.2 Pump Inlet and Outlet Connections
2.3 Closed Loop Circulation
2.4 Open Loop Circulation
2.5 Filling the Reservoir
2.6 Reservoir Purge
Section 3 - Programmable Controller
Information
3.1 Front and Rear Panels
3.2 Heater/Pump Assembly
3.3 Specifications
Section 4 - Operation
4.1 Circulator Location
4.2 Reservoir Liquid Level
4.3 External Temperature Probe
4.4 RS232 Interface
4.5 Power
4.6 Setting the Safety Set Point
4.7 Power On
4.8 Local Lockout
4.9 Setting the Bath Temperature Set Point
4.10 Menu Navigation
4.11 Setting Operational Parameters and
Functions
4.11.1 Setting and Starting the Timer
4.11.2 Entering/Modifying a Temperature
Program
4.11.3 Writing a Temperature Program
4.11.4 Running a Temperature Program
4.11.5 Setting Preferences
4.11.6 Setting High/Low Temperature
Limits and Alarms
4.11.7 Selecting the Pump Speed
4.11.8 Fluid type (specific heat)
4.11.9 Displaying the Bath Temperature
Trend
4.11.10 Selecting the Temperature Probe
(Internal or External)
4.11.11 Setting the Auto-Refrigeration
Temperature
4.11.12 Setting the Display Contrast and
Timeout
4.11.13 Setting the Baud Rate
4.12 Controller Messages
Section 5 - Maintenance and Calibration
5.1 Heater
5.2 Pump Motor
5.3 Cleaning
5.4 Maintaining Clear Bath Water
5.5 Condenser, Air Vents, and Reusable Filter
(Refrigerating/Heating Circulators Only)
5.6 Calibration
Section 6 - Troubleshooting
6.1 Unit Will Not Operate (no heat, cooling, or
pumping)
6.2 No Pumping
6.3 Slow or Insufficient Pumping
6.4 No Heating
6.5 Insufficient Heating
6.6 No Cooling or Insufficient Cooling
6.7 Triac Failure
6.8 External Probe Failure
6.9 Recalling the Power-Up Language
Selection Menu
Section 7 - Reservoir Fluids
Section 8 - Appendix
8.1 Using Bath Controller with Rheocalc
Software
8.2 Using Bath Controller with DV-III+ or DV-III
Ultra Rheometer in Standalone Mode
8.3 RS232 For use without Brookfield
Software (for customers using their own
software)
Section 9 - Service and Technical Support
9.1 Replacement Parts
Section 10 - After-sale Support
Section 11 - Warranty
Section 12 - EC Declaration of Conformity
Section 13 - WEEE Declaration
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This symbol marks chapters and sections of this instruction manual which are particularly relevant to safety. When
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attached to the unit, this symbol draws attention to the relevant s ection of the instruction manual.
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This symbol indicates that hazardous voltages may be present.!
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Your circulator is shipped in a special carton. Retain the carton and all packing materials until the
unit is completely assembled and working properly. Set up and run the unit immediately to confirm
proper operation. Beyond one week, your unit may be warranty repaired, but not replaced. If the
unit is damaged or does not operate properly, contact the transportation company, file a damage
claim and contact the company where your unit was purchased.
Remove any loose packing material that may have fallen into the reservoir during shipping. Before
powering up, check that nothing remains around the heater or circulator pump.
The instructions in this manual pertain to circulating baths both refrigerated and cooling coil types.
Read the section pertaining to the special instructions for your model.
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Circulator Bath TC-102P TC-202P TC-502P TC-602P TC-900P
Operators Manual, warranty
card
RS-232 Communication Cable RSS-E1
3
/16 in., ¼ in., and 3/8 in. Nylon
Barbed Tubing Adapters
6 ft. of ¼ in. ID Latex Tubing HT-Tubing
Adapter Fittings* ¼ in. NPT – M16, Male (qty 2)
Beaker Platform(s) for Bath
Reservoir
— 600 ml
— 1000ml
Deck Lid(s)
— Solid
— w/Beaker Holes
Blue Hole Plugs
— 3 1/2 inch
— 4 ¼ inch
Note: Do Not Use Above 120°C
IEC Power Cord (qty 1)
701-402
510-209
510-211
TBPS300-295
701-402 (qty 2)
701-403
510-210
TBPS300-295
(qty 2)
TBPS300-296
110-242
510-011
701-402
510-290
510-293
TBPS300-295
701-402
510-246
510-484
Note: Work area "opening" is designed to measure samples directly in the bath. If additional viscometer height is
required (spindle/guard clearance), either a 4 inch rod extension (part number BLM-4E) used with type A lab stand
or an 18 inch rod replacement (part number VS-38) used with type S lab stand are available from Brookfield or an
authorized dealer.
* Included with 50Hz Models only.
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Refrigerating/Heating and Heat Only Circulating Baths with the Programmable Controller are
designed for use as stand-alone baths or to provide precise temperature control of fluids for open or
closed loop circulation to external equipment. Refrigeration is normally required for operation at
temperatures below 40°C.
All Circulating Bath models feature a reservoir, which may be used for immersing samples while the
unit is connected to an external device. Circulating Bath models are equipped with a 6 or 10 liter
reservoir. All wetted parts are corrosion-resistant 300 series stainless steel.
Warning: These units are equipped with over-temperature protection (Safety Set). A low-liquid
level or failure to set the Safety Set and properly immerse the heater may result in heater burnout
and triac failure. While operating, do not allow the heater to contact any potentially flammable
materials, such as plastic trays or the sides of plastic tanks, as a fire hazard may result.
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The Circulator’s variable speed duplex (pressure/suction) pump may be used for tempering of
samples in the reservoir or for circulation in open or closed loop systems.
Pump speed is selected via the Main Menu (see Section 4.11.7 – Selecting the Pump Speed).
The Low setting is adequate for most applications and provides quieter pumping. High is
recommended where temperature varies frequently and there is a need for fast recovery or when
pumping to multiple external units.
Maximum Pump Outlet Ratings
Line Frequency = 60Hz LineFrequency = 50Hz
Variable up to: 30 LPM / 5.0 PSI 22 LPM / 3.4 PSI
This data is based on the following criteria:
1. Maximum pump outlet flow rate is measured in liters per minute (LPM) with no restriction on the pump outlet.
2. Maximum pump outlet pressure is measured in pounds per square inch (PSI) at no flow.
3. Water was used as the circulation fluid. W ater has a viscosity of one centistoke. High viscosity or low-density
fluids will change these figures.
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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,
they should be connected using the tubing provided with the unit in order to optimize fluid mixing
within the reservoir.
Picture 1: Inlet to outlet connection. When bath is not circulating with an external
device, the tubing provided with the unit should be used as shown above.
The nylon barbed tubing adapter fittings supplied with the unit are intended for temperature control
from -40° to 93°C. For controlling temperature 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.
IT IS THE USER’S RESPONSIBILITY TO ENSURE THAT THE TUBING AND FITTINGS
CONNECTED TO THE CIRCULATOR ARE COMPATIBLE WITH THE BATH FLUID AND
TEMPERATURE RANGE BEING USED.
NOTE: The use of quick-connect fittings will restrict flow rate. Therefore a high or maximum pump
speed should be used.
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Connect the pump inlet and outlet to the external apparatus (See Picture 2 below). 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 bath pump.
Picture 2: Flow Connections: Small Sample Adapter (shown), DIN
and UL Adapters, or Cone and Plate Viscometers
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 ±0.2°C while the temperature variation in the
viscometer may be only ±0.1°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.
BATH
INLET
BATH
OUTLET
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The duplex 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.
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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 pressure 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.
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The maximum fill level for the Circulating bath is one inch
(25mm) below the top of the reservoir. A liquid level that fully
covers the heater coil, pump, over-temperature sensor, and at
least one inch (25mm) of the temperature sensor must be
maintained. For optimum cooling efficiency, the bath fluid level in
Refrigerating/Heating Circulators should be kept above the
cooling coils at all times.
Upon start-up, it may be necessary to add fluid to compensate
for the fluid required for external circulation. If the proper fluid
level is not maintained, the heater coil may become exposed and possibly damaged.
Minimum fill
level
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When operating at low temperatures, atmospheric moisture tends to migrate into the reservoir and
condense. The 1/8 inch OD Reservoir Purge tube allows you to inject inert gas into the Circulating
Bath to prevent the build-up of condensation.
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Front View Rear View
1. Select / Set Knob 10. Identification Label
2. LCD Display 11. Reservoir Purge
3. Safety Set Indicator Knob 12. Pump Inlet
4. Safety Set Reset Button 13. Pump Outlet
5. Timer Button 14. AC Input
6. Escape Button 15. External Probe Connection
7. Power On/Off Button 16. RS232 Interface
8. Heating Light 17. Circuit Breaker / AC Power Switch
9. Cooling Light1
1
Functional on Refrigerating/Heating Circulating Baths only
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1
10
8
9
7
6
16
17
14
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1. Temperature Sensor
2. Pump Shaft and Impeller
3. Over-Temperature Sensor
4. Heater Coils
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2
1
4
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Model TC-102P TC-202P TC-502P TC-602P TC-900P
Temperature Range
Cooling Tap Water* Tap Water* Refrigerated Refrigerated Refrigerated
Reservoir Capacity 6.0 liter 10 liter 6.0 liter 6.0 liter 13.0 liter
Temperature Stability ±0.01°C
Controller / RS232 Yes
External Temperature Probe Functional on Programmable models / optional external probe required
Readout Accuracy Graphic LCD, °C or °F, ±0.25°C
Heater 1100W – 115V, 2200W – 240V
Pressure Flow Rate 15.7 to 30 LPM (60Hz); 15 to 22 LPM (50Hz)
Suction Flow Rate 11 to 22 (60Hz); 10 to 15 LPM (50Hz)
Over-Temperature Protection
Low-Liquid Protection Yes
Pump Speeds Variable
Pump Inlet and Outlet ¼ inch FPT rear discharge. (M16, Male - 50Hz Models Only)
Dimensions in.
(l x w x h) cm
Unit Weights 22 lbs (10.0 kg) 28 lbs (12.7 kg) 63 lbs (28.6 kg) 68 lbs (30.9 kg) 145 lbs (66 kg)
-20° to 200°C -20° to 150°C -20° to 200°C -20° to 200°C -40° to 200°C
Yes, user-adjustable Safety Set Point
143/4 x 81/4 x 14
37.5 x 13.3 x 35.6
131/4 x 141/4 x 131/
33.7 x 36.2 x 33.7
153/4 x 183/4 x 17
4
40 x 47.6 x 43.2
153/4 x 81/4 x 221/
40 x 21 x 57.1
17 x 15½ x 24¾
2
43.2 x 39.4 x 62.9
Reservoir Volumes 6.0 liters 10.0 liters 6.0 liters 6.0 liters 13.0 liters
Power Requirement 11A @
115V / 1 / 60Hz
(105V - 125V)
9.8A @
240V / 1 / 50Hz
(200V - 260V)
NOTE: Performance specifications determined at ambient temperature of 20°C (68°F).
* For use at lower temperatures, use the built-in tap water cooling, or use model TC-351 Cooler for control to -20°C
11A @
115V / 1 / 60Hz
(105V - 125V)
9.8A @
240V / 1 / 50Hz
(200V - 260V)
12A @
115V / 1 / 60Hz
(105V - 125V)
9.9A @
240V / 1 / 50Hz
(200V - 260V)
12A @
115V / 1 / 60Hz
(105V - 125V)
9.9A @
240V / 1 / 50Hz
(200V - 260V)
14A @
115V / 1 / 60Hz
(105V - 125V)
9.9A @
240V / 1 / 50Hz
(200V - 260V)
Environmental Conditions:
! Indoor Use Only ! Over Voltage: Category ll
! Maximum Altitude: 2000 meters ! Operating Ambient: 5° to 30°C
! Relative Humidity: 80% for temperatures to 30°C ! Pollution Degree: 2
! Class 1: Residential, Commercial, Light Industrial ! Class 2: Heavy Industrial
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Locate the Circulator on a level surface, free from drafts and out of direct sunlight. Do not place it
where corrosive fumes, excessive moisture, high room temperatures, or excessive dust are present.
Refrigerating/Heating Circulators must be a minimum of four inches (102mm) away from walls or
vertical surfaces so air flow around the unit is not restricted.
To help prevent voltage drops, position the Circulator as close as possible to the power distribution
panel and a properly grounded outlet. The use of an extension cord is not recommended.
Warning: These units are equipped with over-temperature protection (Safety Set). A low liquid
level or failure to set the Safety Set and properly immerse the heater may result in heater burnout
and triac failure. While operating, do not allow the heater to contact any potentially flammable
materials, such as plastic racks or the sides of plastic tanks, as a fire hazard may result.
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Fill the reservoir with the appropriate bath fluid. The liquid level should be sufficient to cover the
heating coils, pump, over-temperature sensor, and at least one inch (25mm) of the temperature
sensor.
After filling the reservoir with fluid, you must set the Safety Set and the Limit High value as well as
your desired control set point temperature.
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The Programmable Controller is designed to accommodate an optional remote temperature probe.
The probe (order p/n DVP-94Y) attaches with an adapter (order p/n TC-54Y), to the 9-pin male
D-connector on the rear panel of the Controller.
The Controller will automatically sense the presence of the external probe when main power (rear
panel circuit breaker/power switch) is turned On. To control temperature using the external probe,
“External” must be selected via the Controller’s software. You must also set a Maximum Setpoint
Differential value. See Section 4.11 – Setting Operational Parameters and Functions - Selecting the
Temperature Probe.
To attain better temperature uniformity when using the external temperature probe in a jacketed or
air-filled vessel, stirring the external fluid with pumps or mixing air with fans is recommended. Expect
only ±1.0°C stability with air or any medium that does not conduct heat well. Insulate and cover the
entire set-up to remove temperature gradients; the Controller cannot compensate for external
chamber or component temperature gradients.
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Programmable Controllers incorporate an RS232 interface to provide remote data-logging and
control capability. The 9-pin female RS232 connector is located on the rear panel of the Controller.
The RS232 interface should be connected to a serial communication port on a remote PC using an
appropriate cable (RSS-E1) supplied with the bath. Information on the RS232 command and
communication protocol can be found in Section 8.2 – RS232.
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An IEC power cord is provided with the Circulator. This power cord should be plugged into the IEC
receptacle on the rear of the Controller and then plugged into a properly grounded outlet. Make sure
that the power outlet is the same voltage and frequency indicated on the identification label on the
back of the Controller.
The use of an extension cord is not recommended. However, 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 Circulator.
Once the unit has been connected to an appropriate electrical outlet, place the Circuit
Breaker/Power Switch on the rear of the Controller in the ON position. The unit will run through a
self-test.
The first time power is applied to the Controller, the following display will appear. This display allows
you to select the language that will be used for all subsequent displays. The instructions for selecting
a language will be briefly displayed in each available language.
NOTE: The language selection display only appears the first time the Controller is powered up. See
Section 6 – Troubleshooting for information on recalling this display.
When the language selection display appears, rotate the Select/Set Knob until the desired language
is highlighted and then press the Select/Set Knob. The Controller will continue with the start-up
sequence and then display “Standby” on the LCD.
DO NOT place the Power Switch on the front of the Controller ON until the Safety Set has been
adjusted to the desired temperature (see Section 4.6 below).
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The Safety Set feature automatically disconnects Controller power to the heater and pump in the
event that the reservoir liquid level drops too low or the sensed temperature exceeds the Safety Set
temperature. The Safety Set is user-adjustable between approximately 40° and 210°C. It should be
set at least 5°C higher than the desired bath temperature.
Use a flat blade screwdriver to rotate the Safety Set Indicator Knob to the desired temperature.
Do not force the knob beyond the stops at either end of the temperature value range.
If the Safety Set temperature is exceeded during normal operation, a fault message will flash on
the display and power to the heater and pump will be disrupted. To reset the fault, correct the
problem (low liquid level, incorrect Safety Set temperature, etc.), press the Safety Set Reset Button,
and then the ESC Button. Normal operation will resume.
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Once the Safety Set temperature has been set, turn power to the Controller ON by pressing the
Power Switch on the front of the Controller. The following message will appear briefly on the display:
The pump will begin operating; the display will show the current bath temperature and the set point
temperature (Setpoint). If an external probe is connected, both the internal and external bath
temperatures will be displayed. The temperature probe selected to control bath temperature (internal
or external) will be displayed in larger numerals.
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NOTE: If the external temperature probe is selected to control bath temperature, but the temperature
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difference between the set point temperature and the internal bath temperature exceeds the
Maximum Setpoint Differential setting, the heating/cooling rate will be controlled using the internal
bath temperature until the set point/internal bath temperature difference is within the Maximum
Setpoint Differential value. The word Internal will be highlighted on the display to indicate that the
internal sensor is controlling bath temperature. See Selecting the Temperature Probe in Section
4.11 – Setting Operational Parameters and Functions for more information.
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This enables the user to lock all controls on the controller. While the feature is activated, the unit will
remain running at the current settings.
To activate the local lockout feature, press and hold the Select/Set Knob for 10 seconds. Once
locked, “LocalLock” will appear in the upper left corner of the display. The controller menus may still
be viewed when Local Lockout is active, but no changes may be made.
Press and hold the Select/Set Knob again for 10 seconds to unlock the
controls. Once unlocked, “LocalLock” will disappear and the menu
settings can once again be modified.
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Press and release the Select/Set Knob. The “whole” numbers in the set point temperature will be
highlighted. Rotate the Select/Set Knob clockwise to increase the displayed value; rotate the knob
counter-clockwise to decrease the displayed value.
Press the Select/Set Knob to accept the new value. The decimal value in the set point temperature
digits will be highlighted. Rotate the Select/Set Knob clockwise to increase the displayed value;
rotate the knob counter-clockwise to decrease the displayed value. Press the Select /Set Knob to
accept the new value.
NOTE: Increasing/decreasing the decimal value past “0” will cause a corresponding change in the
“whole” number value. For example, if the current set point value is 24.8 and the desired value is
25.2, it is not necessary to change the 24 to a 25; increasing the decimal value from .8 to .2 will
automatically increase the 24 to 25.
The Controller will not allow you to enter a set point value above the Limit High setting or below the
Limit Low setting. Should you attempt to do so, the set point value will stop increasing/decreasing
when the Limit value is reached and a Warning message will appear on the display. You must either
change the set point or change the Limit value. See Section 4.11 – Setting Operational Parameters
and Functions – Setting High/Low Temperature Limits and Alarms.
NOTE: Programmable Controllers can also be operated using a programmed Time/Temperature
profile. See Entering/Modifying a Temperature Program and Running a Temperature Program in
Section 4.11 – Setting Operational Parameters and Functions for more information.
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