Thermo Scientific NESLAB RTE Instruction Manual

No part of this publication may be reproduced or reprinted except for personal use without the prior permission of Thermo Electron.

NESLAB RNESLAB R

NESLAB R

NESLAB RNESLAB R

Refrigerated BathRefrigerated Bath

Refrigerated Bath

Refrigerated BathRefrigerated Bath

Thermo Manual P/N U00694 Rev. 07/13/05

Installation-Operation-Installation-Operation-

Installation-Operation-

Installation-Operation-Installation-OperationBasic ServiceBasic Service

Basic Service

Basic ServiceBasic Service

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Product Service Information, Applications Notes, MSDS Forms, e-mail.

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Voice Info: (800) 258-0830

Table of Contents

Preface

Compliance ..............................................................................................................2

WEEE Compliance...................................................................................................2

Unpacking ................................................................................................................2

Warranty................................................................................................................... 2

After-sale Support ....................................................................................................3

NES-care Extended Warranty Contract...................................................................3

Copyright .................................................................................................................3

Feedback ................................................................................................................. 3

Section I Safety

Warnings..................................................................................................................4

Section II General Information

Quick Reference Operating Procedures................................................................. 6

Description...............................................................................................................7

Specifications...........................................................................................................7

Section III Installation and Operation

Site .........................................................................................................................11

Electrical Requirements......................................................................................... 12

Plumbing Requirements ........................................................................................14

Fluids ..................................................................................................................... 16

Filling Requirements..............................................................................................17

Controller (Digital One/Digital Plus) ......................................................................17

St art Up/Shut Down................................................................................................19

Setup/Tuning Loop ................................................................................................21

Controller (Digital Plus) .........................................................................................22

Computer Setup Loop .......................................................................................... 24

Timer Setup Loop ..................................................................................................25

Offset Setup Loop ..................................................................................................26

Analog A I/O Port - Optional...................................................................................27

High Temperature Cutouts.....................................................................................28

Nitrogen Purge.......................................................................................................29

Accessories............................................................................................................29

Section IV Basic Maintenance

Reservoir Fluid ......................................................................................................33

Reservoir Cleaning ................................................................................................33

Algae ......................................................................................................................33

Condenser Cleaning ..............................................................................................33

Internal Temperature Sensor (rtd1) Calibration .................................................... 34

External Temperature Sensor (rtd2) Calibration ...................................................35

Optional Analog Port/Calibration - Optional..........................................................36

Section V T roubleshooting

Error Codes ...........................................................................................................37

External Sensor Connector ...................................................................................38

Checklist.................................................................................................................39

Service Assistance.................................................................................................40

PID V alues..............................................................................................................40

BOM Decoder ........................................................................................................41

Displaying Software Version Number ....................................................................41

Appendix A Fluids Appendix B NC Serial Communications Protocol Appendix C International Quick Reference Operating Procedures W ARRANTY

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Compliance

WEEE Compliance

Preface

UL Listed to UL3101-1 (UL61010A-1)

Certified to CSA C22.2 No. 1010.1

Complies with IEC/EN 61010-1

Products tested and found to be in compliance with the requirements defined in the EMC standards defined by 89/336/EEC as well as Low Voltage Directive (LVD) 73/23/EEC can be identified by the CE label on the rear of the unit. The testing has demonstrated compliance with the following directives:

LVD, 73/23/EEC EN 610010-1:1993 EMC, 89/336/EEC EN 61326-1:1998 For any additional information, refer to the Letter of Compliance that shipped

with the unit (Declaration of Conformity).

This product is required to comply with the European Union’s Waste Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is marked with the following symbol:

Unpacking

Warranty

Thermo Electron has contracted with one or more recycling/disposal companies in each EU Member State, and this product should be disposed of or recycled through them. Further information on Thermo Electron’s compliance with these Directives, the recyclers in your country, and information on Thermo Electron products which may assist the detection of substances subject to the RoHS Directive are available at: www.thermo.com/WEEERoHS

Retain all cartons and packing material until the unit is operated and found to be in good condition. If the unit shows external or internal damage contact the transportation company and file a damage claim. Under ICC regulations, this is your responsibility.

Units have a warranty against defective parts and workmanship for 24 months from date of shipment. See back page for more details.

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After-sale Support

Thermo Electron Corporation is committed to customer service both during and after the sale. If you have questions concerning the unit operation, contact our Sales Department. If your unit fails to operate properly, or if you have questions concerning spare parts or Service Contracts, contact our Service Department.

Before calling, please obtain the following information:

- unit BOM number_________________________________

- unit serial number ________________________________

- unit software version ______________________________

- voltage of power source ____________________________

The unit’s BOM number and serial number are printed on the name plate label located on the rear of the unit. See page 41 for instructions on how to decode your unit's BOM number. See page 41 for instructions on how to display the software version.

NES-care Extended

Warranty Contract

S/N: 101039026

• Extend p arts and labor coverage for an additional year.

• Worry-free operation.

• Control service costs.

• Eliminate the need to generate repair orders.

• No unexpected repair costs.

Other contract options are available. Please contact Thermo for more information.

Feedback

We appreciate any feedback you can give us on this manual. Please e-mail us at neslabmanuals@thermo.com. Be sure to include the manual part number and the revision date listed on the front cover.

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Warnings

Section I Safety

Warnings are posted throughout the manual. These warnings are designated by an exclamation mark inside an equilateral triangle and text highlighted in bold. Read and follow these important instructions. Failure to observe these instructions can result in permanent damage to the unit, significant property damage, or personal injury or death.

The lightning flash with arrow symbol, within an equilateral triangle, is intended to alert the user to the presence of non-insulated "dangerous voltage" within the unit's enclosure. The voltage may be of significant magnitude to constitute a risk of electrical shock.

This label, engraved into the front of the tank lip, indicates the presence of hot surfaces.

Make sure you read and understand all instructions and safety precautions listed in this manual before installing or operating your unit. If you have any questions concerning the operation of your unit or the information in this manual, contact our Sales Department.

Performance of installation, operation, or maintenance procedures other than those described in this manual may result in a hazardous situation and may void the manufacturer's warranty.

Transport the unit with care. Sudden jolts or drops can damage the refrigeration lines. The units weigh approximately: RTE 7, 60 pounds (27 kilograms); RTE 10, 68 pounds (31 kilograms); RTE 17, 71 pounds (32 kilograms); RTE 740, 87 pounds (39 kilograms). Units should be transported with equipment designed to lift these weights.

Observe all warning labels. Never remove warning labels. Never operate damaged or leaking equipment. Never operate the unit without bath fluid in the bath. The user is responsible for the fluid used. Never use pure ethylene

glycol as a bath fluid, the flash point of 100% ethylene glycol is 111°C. 100% ethylene glycol may produce flammable vapors that can be ignited by an open flame or an ignition source. When mixed with water, ethylene glycol is not flammable. Also, at high temperatures pure ethylene glycol may produce hazardous vapors.

Always turn off the unit and disconnect the line cord from the power source before performing any service or maintenance procedures, or before moving the unit.

Always empty the bath before moving the unit. Never operate equipment with damaged line cords. Refer service and repairs to a qualified technician.

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Indicates heater status. See page 17.

General Information

Section II General Information

Press to start/stop the unit. See page 17.

Indicates refrigeration system status. See page 17.

Indicates the controller is displaying the setpoint. Press the arrow buttons to change the value. See page 18.

Press to mute the alarm. See page

22. Digital Plus controller only.

Press to select external sensor. See page 22. Digital Plus controller only.

Indicates the controller is displaying the unit's low temperature alarm setpoint. Press the arrow buttons to change the value. See page 18.

Press to select the serial communication mode. See page 22. Digital Plus controller only.

Controller. See page 17.

Press to select the timer function. See page 23 Digital Plus controller only.

Press to change the displayed value. See page 17.

Press to sequence through the three indicators and accept the displayed value. See page 17. NOTE: None of the three setpoint indicators are visible unless this key is pressed.

Press to select the

temperature offset mode. See page 23.

Digital Plus controller only.

Indicates the controller is displaying the high temperature alarm setpoint. Press the arrow buttons to change the value. See page 18.

Condenser Access Panel. See page 33.

Reservoir. See page 16.

High Temperature Cutout. See page 28.

Autorefill connection. See page 29.

RS-232/RS-485 connections. See Appendix B. Digital Plus controller only.

1/8"OD Autorefill fluid connection. See page 29.

1/*4" MPT Pumping

Supply Connection. See page 14.

Drain. See page 14.

Optional External Sensor Connector. Digital Plus controller only.

Analog Output Connector. Digital Plus controller only. See page 27.

Circuit Breaker(s).

Power connection. See page 12.

1/8"OD N2 Nitrogen Purge. See page 29.

1/4" MPT Pumping Return Connection. See

page 14.

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Quick Reference Operating Procedures

Installation

Locate the unit on a sturdy work area. Ambient temperatures should be inside the range of +50°F to +104°F (+10°C to +40°C). The maximum operating relative humidity is 80%.

Never place the unit in a location where excessive

General Information

heat, moisture, or corrosive materials are present. The unit has an air-cooled refrigeration system. Air

is drawn through the front panel and discharged through the rear panel. The unit must be positioned so the air intake and discharge are not impeded. A minimum clearance of 12 inches (30 centimeters) at the front and rear of the unit is necessary for adequate ventilation. Inadequate ventilation will reduce cooling capacity and, in extreme cases, can cause compressor failure.

Excessively dusty areas should be avoided and a periodic cleaning scheduleshould be instituted.

The unit will retain its full rated capacity in ambient temperatures up to approximately +75°F (+24°C).

Make sure the voltage of the power source meets the specified voltage, ±10%.

The pump connections are located at the rear of the pump box and are labelled and . These

connections are angled upward so the recirculating fluid will drain back into the reservoir when the hoses are disconnected. Both connections are capped with stainless steel serrated plugs.

The pump lines have ¼" MPT for mating with standard plumbing fittings. For your convenience stainless steel adapters, ¼" FPT to 3/8" O.D. serrated fitting, are provided.

The bath work area has a high and low level marker to guide filling. The markers are 1 inch horizontal slits located in the center of the stainless steel baffle separating the work area and the pump assembly. The correct fluid level falls between these two markers. The unit will not start if the fluid level is below the lower slit.

Operation

Before starting the unit, double-check all electrical and plumbing connections. Make sure the bath is properly filled with fluid.

To start the unit, press . To turn the unit off

press

The illuminates to indicate the heater is on.

The LED indicates the status of the refrigeration system. It illuminates to indicate the refrigera-

tion system is removing heat from the cooling fluid.

Temperature Adjustment

To display the temperature setpoint, press on the controller. The indicator will illuminate and

the display will flash the current setpoint value. To adjust the temperature setpoint, press the arrow buttons until the desired temperature setpoint is

indicated. Press again to confirm the change. The display will rapidly flash the new value for a

short time and then return to the recirculating fluid temperature.

Periodic Maintenance

Periodically inspect the reservoir fluid. If cleaning is necessary, flush the reservoir with a cleaning fluid compatible with your application.

The reservoir fluid should be replaced periodically. Frequency depends on the operating environment and amount of usage.

Before changing the reservoir fluid ensure it is at a safe handling temperature.

Periodic vacuuming of the condenser fins is necessary. The frequency of cleaning depends on the operating environment. We recommend a monthly visual inspection of the condenser after initial installation. After several months, the cleaning frequency will be established.

again.

LED indicates the status of the heater. It

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Description

General Information

The NESLAB RTE Refrigerated Bath/Circulators are designed to provide temperature control for applications requiring a fluid work area or pumping to an external system. Units consist of a non-CFC air-cooled refrigeration system, circulation

pump, seamless stainless steel bath, work area cover, and a microprocessor temperature controller.

Specifications

Temperature Range

Temperature Stability

Cooling Capacity

RTE 7 RTE 10 RTE 17 RTE 740

-25°C to +150°C -22°C to +150°C -40°C to +200°C ±0.01°C

1100

1000

900 800

700 600 500 400 300

Heat Removal (Watts)

200 100

-40-30-20-10 0 10 20 30 40 5060 70 80 90100

A=115/60 RTE-740 units B=230/50 RTE-740 units C=RTE-7, 10, 17

Temperature °C

Pump Capacity

Meters Feet

4.9 16

3.7 12

r P

2.4 8

1.2 4

0.8 1.6 2.4 3.2 4.0 Gpm 3691215Lpm

Flow

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Time to Temperature

115V/60 Hz units

General Information

230V/50 Hz units

RTE-740 units

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Heater (Watts)

115V/60 Hz Models 230V/50 Hz Models

100V/50-60Hz Models

Refrigerant

RTE 7 RTE 10 RTE 17 RTE 740

800 1600 800

2000 2000 2000

800 1200 800

R134a (6 ounces)

R404a (8 ounces)

General Information

Bath Work Area

(W x L x D)

Inches

Centimeters

Bath Volume

Gallons

Liters

Air Flow Requirements

SCFM

Weight

Pounds

Kilograms

65/8 x 7¼ x 6

16.8 x 18.3 x 15.2

1.9

7.2

8¾x 9 3/8 x 6

22.4 x 23.9 x 15.2

2.6

9.8

8¾ x 9 3/8 x 9

22.4 x 23.9 x 22.9

4.5

17.0

65/8 x 7¼ x 6

16.8 x 18.3 x 15.2

1.9

7.2

200170

27.2

1. Specifications subject to change.

2. Baths are tested at temperatures below freezing with denatured alcohol. This fluid is HIGHLY flammable and is not recommended by Thermo. Above 80°C, baths are tested at with silicone oil. This fluid is known to release a formaldehyde vapor (which is carcinogenic) above 150°C.

3. 20°C ambient. 20°C bath temperature using water. Sea level. Measured at the center of the work area, work cover on, no external flow, stable ambient, full refrigeration (RTE-740 in Energy Saving Mode). For some applications, agitation and stability above ambient may be improved by connecting a small length of hose between the pump connections on the rear of the unit.

4. 20°C ambient. 20°C bath temperature using water. Pump fully loaded. Sea level.

5. See next page for unit dimensions.

6. Add approximately 3 pounds (1.4 kilograms) for shipping weight.

30.8

32.2

39.5

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Unitl Dimensions (inches)

General Information

30°

3¼

15/8

Rear View Side View

Unit Dimensions

105°

17/8

1½

RTE 7 RTE 10 RTE 17 RTE 740

Dimension A

Dimension B

Dimension C

Dimension D

Dimension E

Crate Dimensions (D x W x H)

23 5/8 23 5/8 26 5/8 26 5/8

9 1/4 11 3/8 11 3/8 11 3/8

19 20 1/8 20 1/8 20 1/8

17 3/8 17 3/8 20 3/8 20 3/8

10 5/8 10 5/8 10 5/8 12 3/8

26½ x 18 x 33½

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Site

Section III Installation and Operation

Locate the unit on a sturdy work area. Ambient temperatures should be inside the range of +50°F to +104°F (+10°C to +40°C). The maximum operating relative humidity is 80%.

Never place the unit in a location where excessive heat, moisture, or corrosive materials are present.

The unit has an air-cooled refrigeration system. Air is drawn through the front panel and discharged through the rear panel. The unit must be positioned so the air intake and discharge are not impeded. A minimum clearance of 12 inches (30 centimeters) at the front and rear of the unit is necessary for adequate ventilation. Inadequate ventilation will reduce cooling capacity and, in extreme cases, can cause compressor failure.

Excessively dusty areas should be avoided and a periodic cleaning schedule should be instituted (see Section IV, Condenser Cleaning).

Using 20°C water as a bath fluid, 115/60 units will retain their full rated capacity in ambient temperatures up to +20°C. Reduce the cooling capacity approxi- mately 15 watts for every 1°C above +20°C, to a maximum ambient temperature of +40°C. For 230/50 units, reduce the cooling capacity approximately 18 watts for every 1°C. Lower reductions in cooling capacity occur as the bath fluid temperature increases.

Installation and Operation

- 11 -

Electrical

Requirements

Installation and Operation

The unit construction provides protection against the risk of electrical shock by grounding appropriate metal parts. The protection may not function unless the power cord is connected to a properly grounded outlet. It is the user's responsibility to assure a proper ground connection is provided.

We recommend the use of a dedicated outlet.

Refer to the serial number label on the rear of the unit to identify the specific electrical requirements of your unit. Ensure the voltage of the power source meets the specified voltage, ±10%.

The RTE-7 is not designed to be used beyond the voltage range or have momentary power interruptions. Install an “un-interruptible power supply” or a line loss detection method.

All units are:

Pollution Category 2

Overcurrent Protection II

The following power options are available:

Unit Amps

Breaker Power Inlet

RTE 7 115/60/1 12 15A IEC 320-C-13

100/50-60/1 12 15A IEC 320-C-13

230/50/1 12 15A IEC 320-C-19

RTE 10 115/60/1 12 15A IEC 320-C-13

100/50-60/1 12 15A IEC 320-C-13

230/50/1 12 15A IEC 320-C-19

RTE 17 115/60/1 16 20A IEC 320-C-19

100/50-60/1 16 20A IEC 320-C-19

230/50/1 12 15A IEC 320-C-19

RTE 740 115/60/1 16 20A IEC 320-C-19

100/50-60/1 16 20A IEC 320-C-19

230/50/1 12 15A IEC 320-C-19

1. Average Amp draw.

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Unit Type

115/60/1 15 NEMA 5-15 115/60/1 20 NEMA 5-20

Amperage Plug Type

100/50-60/1 15 NEMA 5-15 100/50-60/1 20 NEMA 5-20 230/50/1 All Country Specific

1. Power cord length, if supplied, is 2 meters.

Power Cord Set

230 Volt, 50 Hertz units do not come with a power cord set. To select the proper power cord, follow these guidelines:

The cord set must consist of a plug, cable and receptacle. If the unit is rated greater than 12 Amps, use a cord set rated for 20A. If the unit is rated less than 12 Amps, use a cord set rated for 15A. The cord set must be approved by local electrical authority or other

acceptable agency.

Ensure the plug is compatible with your local outlets and receptacles.

Installation and Operation

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Plumbing Requirements

Ensure the unit is off before connecting tubing to the unit.

To prevent damage to the plumbing lines, always support the fittings while installing/removing the pumping caps and lines.

Hose Connections

The pump connections are located at the rear of the pump box and are labelled

(pump outlet) and (pump inlet). These connections are bent upward

so the recirculating fluid will drain back into the reservoir when the hoses are disconnected. Both connections are capped with stainless steel serrated plugs.

The pump lines have ¼" MPT for mating with standard plumbing fittings. For your convenience stainless steel adapters, ¼" FPT to

/8" O.D. serrated fitting, are provided. (To assure proper fit, they should be installed using 1½ turns of Teflon® tape around the threads.)

Installation and Operation

Drain

Make sure all tubing connections are securely clamped. Avoid running tubing near radiators, hot water pipes, etc. If substantial lengths of tubing are necessary, insulation may be required to prevent loss of cooling capacity. Tubing and insulation are available from Thermo. Contact our Sales Department for more information (see Preface, After-sale Support).

It is important to keep the distance between the unit and the external system as short as possible, and to use the largest diameter tubing practical. Tubing should be straight and without bends. If diameter reductions must be made, make them at the inlet and outlet of the external system, not at the unit.

If substantial lengths of cooling lines are required, they should be pre-filled with bath fluid before connecting them to the unit. This will ensure that an adequate amount of fluid will be in the bath once it is in operation.

Ensure the bath fluid is at a safe handling temperature before draining the unit.

The unit is equipped with a drain located at the back of the unit labelled . To drain the reservoir attach a hose to the barb and loosen the fitting.

The fitting has a stop to prevent it from coming off.

Pumping

The pump is designed to deliver a flow of 15 liters per minute (4 gallons per minute) at 0 feet head. To prevent external circulation, the pump inlet and outlet lines on the rear of the unit are capped. The caps must be removed when external circulation is required.

To properly secure external hose connections to the unit, wrap Teflon® tape around the pipe line threads before installation. Once the hose connections are made, the hoses must be properly plumbed to an external system. It is

important the bath is not in operation until all plumbing is complete.

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Circulating to an open container

Outlet

Inlet

Levelling Device

Installation and Operation

Bath (Rear View)

Open Container

A stainless steel leveling device is available to aid circulation to an open vessel. Contact our Sales Department for more information (see Preface).

Support the leveling device over the open container with a ringstand. Stagger the tubes in the leveling device so one tube is submerged in the vessel fluid, and the other tube is level with the fluid surface. Connect the deeper tube to the pump outlet and the shorter tube to the pump inlet.

Adjust the flow rate using the accessory flow control valve connected to the pump outlet, or by partially restricting the outlet tubing. When properly adjusted, the pump inlet will draw an occasional air bubble to prevent over flow, and the pump outlet will force fluid through the submerged tube to prevent aeration of the vessel.

To avoid siphoning the bath work area when the unit is shut off, lift the leveling device out of the vessel and above the level of the unit.

Circulating through two closed-loops

Pump Box

Bath

Work Area

Bath (Top View)

System #1

System #2

The pump can be used to circulate through two closed-loop systems. Connect the shortest practical length of flexible tubing from the pump outlet to the inlet of external system #1. Connect the outlet of system #1 directly into the bath work area. Connect tubing from the bath work area to the inlet of system #2. Connect the outlet of system #2 to the pump inlet.

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