Brookfield TC-351 User Manual

Operators Manual

Flow-Through Cooler

Model TC-351

110-120

rev. A

Table of Contents

Section 1. General Information

1.1 Unpacking

1.2 Package Contents

1.3 Description of Cooler

1.4 Specifications

Section 2. Operation

2.1 Location

2.2 Power

2.3 Safety Overload Warning

2.4 Choice of Fluids

2.5 Operation

Section 3. Maintenance

3.1 Required Maintenance

Section 4. Troubleshooting

4.1 Problem / Solution Chart

Section 5. Service and Technical Support

Section 6. After-sale Support

Section 7. Warranty

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Section 1. General Information

Thank you for your Flow-Through Cooler purchase. We are confident it will serve you a long time.

1.1 Unpacking

Your Flow-Through Cooler 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.

1.2 Package Contents

— Flow-Through Cooler Unit
— Operators Manual
— Warranty Card

1.3 Description of Cooler

The Flow-Through Coolers are designed to be used in conjunction with circulators or other controlled
heating and pumping devices. They are built with a copper tube-within-a-tube heat exchangers. The
fluid to be cooled is circulated through the space between the tubes while the refrigerant, evaporated
to produce cooling, is inside the inner tube. The fluid contact with the cold evaporator inner tube
produces very efficient heat removal from the fluid.

1.5 Specifications

Model Flow-Through Cooler

HP
Temperature Range -20° to +40°C
Cooling Capacity 200 Watts @ -10°C 575 Watts@+20°C
Inlet/Outlet
Dimensions (h x d x w) 14 x 14 x 17 in.
Unit Weight 59 lbs (26.8 kg)
Power Requirements 120V, 60 Hz, 5 Amps (Operating Range 105V -125V)

Section 2. Operation

2.1 Location

Locate your cooler on a level surface free from drafts and direct sunlight. Avoid areas with corrosive
fumes, excessive moisture, high room temperatures, or excessive dust. Refrigerated circulators must
be at least four inches away from walls or obstructions so air flow is not restricted.

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/4hp

3

/8in. FPT

240V, 50 hz, 2.5 Amps (Operating Range 200V -260V)

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2.2 Power

Plug the unit into a properly grounded outlet with the same voltage and frequency indicated on the
identification label (rear of unit). 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 avoid low line voltage problems.

2.3 Safety Overload Warning

The compressor in these units is equipped with an internal safety overload switch. If the unit is turned
off, wait 10 minutes before restarting, allowing internal pressure and temperature to stabilize. If the unit
is turned on before stabilization, the compressor may not operate. If this happens, turn the unit off
again and wait 10 minutes before restarting.

2.4 Choice of Fluids

To select a fluid for low temperature use, the viscosity and freezing point must be considered.
Common fluids used are: a 50/50 mixture of methanol and water, or a 50/50 mixture of ethylene or
propylene glycol and water. The chart below will help in selecting a fluid for your application.

You are responsible for proper selection and use of the fluids.

Extreme range operation should be avoided.

FLUID DESCRIPTION SPECIFIC HEAT NORMAL EXTREME

@25°C RANGE RANGE

Water 1.00 10°C — 90°C 2°C — 100°C
Ethylene Glycol 30% / Water 70% .90 0°C — 95°C -15°C — 107°C
Ethylene Glycol 50% / Water 50% .82 -20°C — 100°C -30°C — 100°C
Ethylene Glycol 100% .62 50°C — 125°C 0°C — 125°C*
Dynalene-HC 50™ .76 -50°C — 60°C -62°C — 60°C
DC510 50 cs Silicone Oil .39 50°C — 150°C 5°C — 270°C*
DC550 125 cs Silicone Oil .42 100°C — 200°C 80°C — 315°C*

*WARNING - Fluid’s flashpoint temperature.
DC fluids are manufactured by Dow Corning

. Dynalene HC is a registered TM of Advanced Fluid Technologies, Inc.

DO NOT use the following fluids:

1. Automotive antifreeze with additives*

2. Hard tap water*

3. Deionized water with a specific resistance > 1 meg ohm

4. Any flammable fluids

5. Concentrations of acid or bases

6. Solutions with halides: chlorides, fluorides, bromides, iodides or sulfur

7. Bleach (Sodium Hypochlorite)

8. Solutions with chromates or chromium salts

* At temperatures above 40°C, additives or mineral deposits can adhere to the heater. If allowed to build up, the heater
may overheat and fail. Higher temperatures and higher concentrations of additives will cause a faster deposit build up.
If buildup occurs see Section 5.1 Maintenance - Heater.

WARNING: Do not use a flammable liquid as a fire hazard may result.

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Circulator

Device to be

operated at

controlled

temperature

Flow-Through Cooler

Input

Fig. A - Interconnection of the flow-through cooler,

circulator and device at a controlled temperature

Output

APPLICATION NOTES

At fluid's low temperature extreme:

1. Presence of ice or slush adversely affects temperature stability.

2. Viscosity above 10 centistokes adversely affects temperature uniformity.

3. High fluid viscosity and high speed pumping generates heat in the fluid.

Circulator

Flow-Through Cooler

Output

Input

Fig. B - Interconnection of the flow-through cooler and

circulator when tempering samples in the circulator

2.5 Operation

1. Depending on your application, connect the unit as shown in Figure A or B. When connecting
tubing to the fittings at the back of the unit, use the lower fitting as the inlet for the circulated fluid.

2. First, fill the circulator with fluid and power on circulator.

3. Set the circulator's temperature. After the circulator's temperature stabilizes, turn the cooler on.

APPLICATION NOTES

1. Your application may require fluid to be pumped through one or more external systems as in Fig. A.
The limitations are: the pump capacity; the unit's cooling capacity; and it must be a closed system.

2. The circulator must have adequate heating capacity in order to overcome the cooling effect of the
cooler. If the heating is insufficient, the fluid will continue to be cooled below the set temperature
and lack of control will result.

3. Fluid may need to be added to the circulator reservoir to compensate for fluid pumped into tubing,
the cooler and the external device.

Section 3. Maintenance

3.1 Required Maintenance

The refrigeration condenser fins are located just behind the side grill holes. Dust that accumulates
reduces the amount of cooling power available. The dust should be blown out periodically with
compressed air. All other items are permanently lubricated and need no attention.

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Section 4. Troubleshooting

4.1 Problem / Solution Chart

The following chart outlines a few problems that may arise. The solutions are listed in order of priority.

Problem Solution

Does not run 12, 4
No cooling 6, 7, 1, 2, 4, 10, 8
Insufficient cooling power 3, 5, 7, 6, 10, 2, 4, 11, 8
Runs 5 minutes, compressor shakes or stalls, restarts 5 minutes later 5, 2, 1, 8, 4
Compressor will not start. Clicks about every 30 seconds 1, 2, 4, 8
Gradual loss of cooling 3, 10, 11
Condenser fan not running or making loud noises 4
Fluid gets too cold 9
Stops cooling when fluid is cold 6, 7, 5, 10, 11

Solutions

1. Compressor may be cycling on overload. Shut off power for at least 10 min. Then restart.

2. Improper line voltage, frequency, or both. Insufficient power supply during starting. Check
voltage at power source during start cycle. Voltage must be within 10% of rated voltage. Avoid
extension cords which can cause voltage drops.

3. See Section 3.1, Required Maintenance. Check for air flow exiting the back of unit. Air vents
should not be closer than four inches from wall. Unit should not be placed in cabinet. Place
where exiting warm air will not return to the intake, or near warm air from other sources. High room
temperature reduces cooler's capability.

4. Unplug unit, remove cover. Check that condenser fan blade moves freely. If not, check fan
bracket or blade for misalignment.

5. Fluid too hot for the cooler to continuously cool. Check specifications for heat removal. At less
than 0°C, heat loss to the room may be excessive. Containers and tubing should be insulated
where condensation or frost occur. High power pumps can introduce excessive heating.

6. Fluid viscosity too high or freezing at desired temperature. Unit may freeze internally and block
the flow. Freezing point of fluid should be 10° to 20°c lower than desired temperature. See
Section 2.3, Choice of Fluids

7. Insufficient fluid flow rate to provide cooling. Quick connectors or tubing less than 3/8 in, diameter
may restrict flow. Flow should be 3 to 15 lpm.

8. Compressor may be overcharged with refrigerant. If compressor does not start and all other
possibilities checked, compressor may be defective.

9. Coolers are intended to connect to other systems that pump, heat and control temperature.
coolers do not have thermostats and will only reduce temperature to as low as they can go.

10 Possible refrigerant leak. A licensed refrigeration service person should recover refrigerant, find &

repair leak, evacuate and recharge.

11.After many years, compressor valves may produce high pitch buzzing sound.

12.Check power. Unit's power switch should be illuminated.

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Section 5. Service and Technical Support

If you have followed the troubleshooting steps and your circulator fails to operate properly, contact the
distributor or manufacturer from whom the unit was purchased. Have the following information available
for the customer service person:

— Model and Serial Number
— Voltage (from back panel label)
— Date of purchase and your purchase order number
— Suppliers' order number or invoice number
— A summary of your problem

Section 6. After-sale Support

All instruments requiring warranty repair must be returned to Brookfield Engineering Laboratories, Inc.
or the Brookfield dealer from whom it was purchased. Transportation is at the purchaser's expense.

For repair or service in the United States, return to:

Brookfield Engineering Labs., Inc.
11 Commerce Boulevard
Middleboro, MA 02346 USA
Telephone: [phone]
Fax: [phone]
URL: www.brookfieldengineering.com
[e-mail]

For repair or service outside the United States

or the dealer from whom you purchased the instrument.

, consult Brookfield Engineering Laboratories, Inc.

For repair or service in the United Kingdom, return to :

Brookfield Viscometers Limited
1 Whitehall Estate
Flex Meadow
Pinnacles West
Harlow, Essex CM19 5TJ, United Kingdom
Telephone [phone]
Fax: [phone]
[e-mail]

For repair or service in Germany, return to:

Brookfield Engineering Labs. Vertriebs GmbH
Barbarossastrasse 3
D-73547 Lorch, Germany
Telephone: [phone]
Fax: [phone]
[e-mail]

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Section 7. Warranty

Thank you for your purchase. We are confident it will serve you for a long time. Our warranty to you is
as follows:

The manufacturer agrees to correct for the original user of this product, either by repair, or at the
manufacturer’s election, by replacement, any defect which develops after delivery of this product within
the period as stated on the warranty card. In the event of replacement, the replacement unit will be
warranted for 90 days or warranted for the remainder of the original unit’s parts or labor warranty
period, whichever is longer.

If this product should require service, contact the manufacturer/suppliers’ office for instructions. When
return of the product is necessary, a return authorization number will be assigned and the product
should be shipped, transportation charges pre-paid, to the indicated service center. To insure prompt
handling, the return authorization number should be placed on the outside of the package and a
detailed explanation of the defect enclosed with the item.

This warranty shall not apply if the defect or malfunction was caused by accident, neglect,
unreasonable use, improper service, or other causes not arising out of defects in material or
workmanship. There are no warranties, expressed or implied, including, but not limited to, those of
merchantability or fitness for a particular purpose which extends beyond the description and period set
forth herein.

The manufacturer’s sole obligation under this warranty is limited to the repair or replacement of a
defective product and the manufacturer 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. You may also have other rights which vary from
state to state.

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