PolyScience LM, MM Operating Manual

Operator’s Manual

LM-Series & MM-Series Compact Chillers

110-471 09.01.11

Table of Contents

Table of ContentsTable of Contents

Introduction

Introduction ................................

IntroductionIntroduction General Information

General Information ................................

General InformationGeneral Information

General Safety Information............................................................................................................................................................. 2

Safety Recommendations............................................................................................................................................................... 3

Unpacking Your Chiller.................................................................................................................................................................... 3

Regulatory and Compliance Testing.............................................................................................................................................. 3

Contents............................................................................................................................................................................................ 3

Controls and Components

Controls and Components ................................

Controls and ComponentsControls and Components Installation and Startup

Installation and Startup ................................

Installation and StartupInstallation and Startup

Site Requirements............................................................................................................................................................................ 5

Ambient Temperature and Relative Humidity.......................................................................................................................... 5

Location......................................................................................................................................................................................... 5

Clearance....................................................................................................................................................................................... 5

Electrical Power................................................................................................................................................................................ 5

Optional RS232 Serial Output ........................................................................................................................................................ 5

Plumbing............................................................................................................................................................................................ 6

Process Piping.............................................................................................................................................................................. 6

Fluid Filter..................................................................................................................................................................................... 6

Reservoir Drain............................................................................................................................................................................. 6

Closed System or Cooling Coil Setup............................................................................................................................................. 6

Startup............................................................................................................................................................................................... 7

Process Coolant............................................................................................................................................................................ 7

Electrical Power............................................................................................................................................................................ 8

Starting Process Fluid Flow........................................................................................................................................................ 8

Normal Operation

Normal Operation ................................

Normal OperationNormal Operation

Selecting the Temperature Unit (°C or °F) ................................................................................................................................... 9

Displaying and Adjusting the Set Point......................................................................................................................................... 9

Setting Operational Parameters .................................................................................................................................................... 9

High Temperature Limit (H-##) ................................................................................................................................................10

Low Temperature Limit (L-##)..................................................................................................................................................10

Auto-Refrigeration Temperature (A ##)..................................................................................................................................10

Specific Heat (P.##) ...................................................................................................................................................................10

Communications Baud Rate (PC##).........................................................................................................................................10

Temperature Calibration (C #.#)................................................................................................................................................ 11

Password (Pd00)..........................................................................................................................................................................11

Enabling/Disabling the Local Lockout (LLO).................................................................................................................................11

Display, Alarm and Error Messages

Display, Alarm and Error Messages ................................

Display, Alarm and Error MessagesDisplay, Alarm and Error Messages Routine Maintenance and Troubleshooting

Routine Maintenance and Troubleshooting................................

Routine Maintenance and TroubleshootingRoutine Maintenance and Troubleshooting

Routine Maintenance ...................................................................................................................................................................... 13

Condenser, Air Vents and Reusable Filter ...............................................................................................................................13

Fluid Level.................................................................................................................................................................................... 13

Temperature Calibration............................................................................................................................................................ 13

Cleaning Exterior Surfaces ........................................................................................................................................................13

Troubleshooting...............................................................................................................................................................................14

Technical Information

Technical Information ................................

Technical InformationTechnical Information

Model LM61 60Hz Compact Chiller Specifications......................................................................................................................15

Model LM62 Hz Compact Chiller Specifications..........................................................................................................................16

Model MM71 60Hz Compact Chiller Specifications ..................................................................................................................... 17

Model MM72 50Hz Compact Chiller Specifications....................................................................................................................18

General Information & Specifications...........................................................................................................................................19

RS232 Serial Communication (Optional).....................................................................................................................................20

Equipment Disposal (WEEE Directive)

Equipment Disposal (WEEE Directive) ................................

Equipment Disposal (WEEE Directive)Equipment Disposal (WEEE Directive) Service and Technical Support

Service and Technical Support................................

Service and Technical SupportService and Technical Support Replacement Parts and Accessories

Replacement Parts and Accessories ................................

Replacement Parts and AccessoriesReplacement Parts and Accessories PolyScience Chiller Fluids

PolyScience Chiller Fluids ................................

PolyScience Chiller FluidsPolyScience Chiller Fluids Warranty

Warranty................................

WarrantyWarranty

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110-471 1

110-471 2

Introduction

IntroductionIntroduction

LM-Series and MM-Series Compact Chillers provide cooling power for demanding applications and serve as economical alternatives to tap water cooling systems. They feature a microprocessor-based controller, digital temperature display (°C or °F), and simple operation and maintenance.

To optimize cooling efficiency and performance, these sophisticated Chillers also feature a modulated refrigeration system. As a result, temperature stability is greatly enhanced and compressor life extended.

LM-Series and MM-Series Chillers are equipped with a magnetic drive centrifugal pump. Wetted parts within the recirculation system are brass, copper, stainless steel, EPDM rubber, Alcryn, nylon, PVC, and polyethylene.

General Information

General InformationGeneral Information

General Safety Information

General Safety InformationGeneral Safety Information

When installed, operated, and maintained according to the directions in this manual and common safety procedures, your Chiller should provide safe and reliable heat removal. Please ensure that all individuals involved in the installation, operation, or maintenance of this unit read this manual thoroughly prior to working with the unit.

This symbol alerts you to wide range of potential dangers.

This symbol advises you of danger from electricity or electric shock.

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 Switch 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

Read all instructions pertaining to safety, set----up, and operation.

Read all instructions pertaining to safety, setRead all instructions pertaining to safety, set

Proper operation and maintenance is the user’s responsibi

Proper operation and maintenance is the user’s responsibility.

Proper operation and maintenance is the user’s responsibiProper operation and maintenance is the user’s responsibi

up, and operation.

up, and operation. up, and operation.

lity.

lity.lity.

110-471 3

Safety Recommendations

afety Recommendations

afety Recommendationsafety 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:

• Always connect the power cord on this unit to a grounded (3-prong) power outlet. Make certain that the

outlet is the same voltage and frequency as your unit.

• Never operate the unit with a damaged power cord.

• Always turn the unit OFF and disconnect Mains power before performing any maintenance or service.

Unpacking Your Chiller

Unpacking Your ChillerUnpacking Your Chiller

Your Chiller 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 immediately.

CAUTION:

CAUTION: Keep unit upright when moving. Be sure to follow your company’s procedures and practices

CAUTION:CAUTION: regarding the safe lifting and relocation of heavy objects.

Regulatory

Regulatory and Compliance Testing

RegulatoryRegulatory

and Compliance Testing

and Compliance Testing and Compliance Testing

CSA UL (60Hz units)

CSA UL (60Hz units)CSA UL (60Hz units)

CAN/CSA C22.2 No. 61010-1-04 — Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, Part I: General Requirements.

CAN/CSA C22.2 No. 61010-010-04 — 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 Std No. 61010-1 — Electrical Equipment for Laboratory Use, Part I: General Requirements.

UL Std No. 61010A-2-010 — Electrical Equipment for Laboratory Use, Part 2: Particular Requirements for Laboratory Equipment for the Heating of Materials.

CE (50Hz units)

CE (50Hz units)CE (50Hz units)

EC Low Voltage Directive 2006/95/EC

EC Electromagnetic Compatibility Directive 2004/108/EC IEC 61010-1-2001 IEC 61326:2005 / EN 61326 : 2006

Contents

Contents Contents

The following items have been included with your Chiller:

• Operator’s Manual

• IEC Power Cord

• Two sets of Inlet/Outlet Adapters: ½ inch NPT to ½ inch hose barb;

½ inch NPT to 5/8 inch hose barb

110-471 4

Controls and C

Reservoir Cap

Up & Down

Temperature

Units LEDs

Heating &

Temperature

Set Button

Air Filter

Fluid Level

On/Off Button

dentification Label

IEC Power

Circuit Breaker /

Drain

Fluid Inlet

Fluid Outlet

RS232

Controls and Components

Controls and CControls and C

Cooling LEDs

Display

omponents

omponentsomponents

Arrow Buttons

Indicator

Connection

Power Switch

Compartment

Connection

(optional; not

shown)

NOTE:

NOTE: When controlling at the set point temperature, it is not uncommon for both the heating and cooling

NOTE:NOTE: LEDs to be lit simultaneously.

110-471 5

Installation and Startup

Installation and StartupInstallation and Startup

WARNING:

WARNING: Be sure all power is off before proceeding.

WARNING: WARNING:

SSSSite Requirements

ite Requirements

ite Requirementsite Requirements

Ambient Temperature and Relative Humidity

Ambient Temperature and Relative HumidityAmbient Temperature and Relative Humidity

The Chiller is designed for indoor installation in ambient temperatures between 5° and 35°C (41° and 95°F); relative humidity should not exceed 80% (non-condensing).

Location

LocationLocation

The Chiller should be installed on a strong, level surface. It should be located as close to possible to the process requiring cooling. It should not be installed closer than 1.4 meters (4 feet) to a heat-generating source, such as heating pipes, boilers, etc. If possible, the Chiller should be located near a suitable drain to prevent flooding in the event of leaks. Do not place it where corrosive fumes, excessive moisture, excessive dust, or high room temperatures are present.

NOTE:

NOTE: The Chiller may be located at a level below that of the equipment being cooled. As long as

NOTE:NOTE:

the process remains closed, overflow will not occur when adding cooling fluid to the Chiller reservoir.

Clearance

ClearanceClearance

Adequate clearance should be allowed on the front, sides, top, and rear of the Chiller for access to connections and components. The front and side vents of the Chiller must be a minimum of 21 cm (8 inches) away from walls or vertical surfaces so air flow is not restricted.

Electrical Power

Electrical Power Electrical Power

An IEC power cord is provided with the Chiller. It should be attached to the receptacle on the rear of the enclosure. Make sure that the power outlet used for the Chiller is properly grounded and matches the voltage and frequency indicated on the identification label on the back of the Chiller.

To help prevent voltage drops, position the Chiller as close as possible to the power distribution panel. Avoid voltage drops by using a properly grounded power outlet wired with 14 gauge or larger diameter wire.

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 Chiller.

WARNING:

WARNING: DO NOT plug the Chiller into the electrical outlet until the unit is ready for Startup.

WARNING: WARNING:

Optional RS232 Serial Output

Optional RS232 Serial OutputOptional RS232 Serial Output

This option allows you to remotely control the Chiller and/or output temperature readings to an external recorder or other auxiliary device. The maximum communications distance for Chillers equipped with the RS232 option is 15 meters (50 feet). A 9-pin D-connector is provided on the rear of the instrument enclosure for this connection. See the

Technical Information s

ection for the RS232 serial communication protocol.

110-471 6

Plumbing

Plumbing Plumbing

Process Piping

Process PipingProcess Piping

The Chiller has two internally threaded (0.5 inch ID NPT) fittings on the rear of the instrument housing for the process fluid connections. Two sets of 90° barbed hose adapters (0.5 inch and 5/8 inch) are supplied with the unit for connecting these fittings to the process piping.

To maintain a safe workplace and avoid leaks, special care should be taken when choosing hoses and connectors for the Chiller. It is the user’s responsibility to ensure that the tubing and fittings connected to the Chiller are compatible with the fluid, temperature, and pressure being used.

• Pressure Ratings — Hoses should be able to withstand the largest pressure that they will encounter.

• Flexible Tubing — Avoid tubing that will expand and take up fluid volume when operating at the desired

pressure.

• Hose Diameter — Process piping/hosing with a diameter smaller than 0.5 inch ID can be used if desired.

However, keep in mind that using smaller diameter hosing increases pressure and reduces flow in the circulating system and may result in a flow alarm. The minimum recommended tubing size is 3/8 inch ID.

• Couplings and Clamps — The use of screw-tightened hose clamps is necessary on all joints to insure

good, tight connections. Quick connectors are not recommended as they have the potential for restricting flow rate.

Fluid Filter

Fluid FilterFluid Filter

If particulate matter may be present in the fluid, the installation of a 50 micron filter on the chiller inlet is recommended.

50 micron fluid filter: Part number 510-519

Reservoir Drain

Reservoir DrainReservoir Drain

A 0.5 inch NPT connection is provided for the reservoir’s gravity drain. It should be piped to a drain or receptacle positioned below the bottom of the drain. If a receptacle is used, be sure it is of sufficient volume to hold all the water in the reservoir, process, and process lines.

Closed System or Cooling Coil Setup

Closed System or Cooling Coil SetupClosed System or Cooling Coil Setup

Connect the Chiller’s inlet and outlet to the external apparatus with hoses or pipes. The direction of the flow through the system can be controlled by the way the connections are made. Fluid is drawn into the Chiller through the “Inlet” connection; fluid is pumped out of the Chiller through the “Outlet” connection.

NOTE:

NOTE: If the Chiller is connected to an external apparatus with a built-in shutoff, an external bypass loop

NOTE:NOTE: assembly may be needed. This bypass assembly continues flow circulation to and from the pump even though the main flow to the external apparatus has been blocked.

External bypass loop assembly: Part number 510-147

110-471 7

Startup

StartupStartup

Process Coolant

Process CoolantProcess Coolant

Suitable Fluids

WARNING:

WARNING: Only use fluids that will satisfy safety, health, and equipment compatibility requirements.

WARNING: WARNING: Caustic, corrosive, or flammable fluids must never be used.

The Chiller is designed to accommodate a variety of coolant fluids (water, glycol mixtures, etc). For most applications above 20°C (68°F), distilled water is satisfactory. For operation at or below 20°C (68°F), the Chiller must be protected with an antifreeze solution. Ethylene glycol (laboratory grade) and distilled water in a 50/50 mixture is satisfactory from +20° to -15°C (68° to 5°F). Select a fluid that is compatible with the Chiller’s wetted parts (brass, copper, stainless steel, EPDM rubber, Alcryn, nylon, PVC, and polyethylene).

WARNING:

WARNING: Do not use caustic, corrosive, or flammable fluids.

WARNING: WARNING:

WARNING:

WARNING: Operation below 20°C (68°F) requires antifreeze in the circulation fluid.

WARNING: WARNING:

To prevent algae growth in the system, shield tubing from light. Insulation around the tubing will suffice. Use an algaecide in the cooling water to minimize algae growth.

WARNING:

WARNING: Do NOT use chlorine bleach as an algaecide.

WARNING:WARNING:

WARNING

WARNING:

WARNINGWARNING

: Do not use the following fluids

Do not use the following fluids

: :

Do not use the following fluidsDo not use the following fluids

• 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

• Glycerin

• 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 can hasten deposit build up.

Filling the Reservoir

Unscrew the reservoir cap and carefully fill the reservoir with fluid. Leave the cap off and add additional fluid as instructed under Starting Process Fluid Flow, below.

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