Thermo Scientific Neslab Dimax User Manual

NESLAB DIMAX

DI Maximum Cooler

Thermo Manual P/N U00858 Rev. 12/28/05

Installation-Operation-
Basic Service

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Statement of Copyright

Copyright © 2007 Thermo Fisher Scientific. All rights reserved.

This manual is copyrighted by Thermo Fisher Scientific.

Users are forbidden to reproduce, republish, redistribute, or resell any materials from this
manual in either machine-readable form or any other form.

DIMAX DI MAXIMUM COOLER

PREFACE

SECTION I

Safety

SECTION II

General Information

SECTION III

Installation

SECTION IV

Operation

Compliance ............................................................................................ 3

Unpacking .............................................................................................. 3

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

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

Description ............................................................................................. 5

Specifications ......................................................................................... 6

Site ......................................................................................................... 7

Facility Water Requirements................................................................... 7

Electrical Requirements .......................................................................... 7

Field Wiring Requirements ...................................................................... 7

Plumbing Requirements .......................................................................... 9

Fluids ..................................................................................................... 10

Filling Requirements ............................................................................... 10

Microprocessor Controller ....................................................................... 11

LEDs ...................................................................................................... 11

Fault Messages ...................................................................................... 16

SECTION V

Maintenance

Start Up .................................................................................................. 17

Flow Transducers ................................................................................... 18

Low Fluid Level Safety ............................................................................ 18

Autorefill ................................................................................................. 18

Emergency Off (EMO) ............................................................................ 18

Remote Interface .................................................................................... 19

Resistivity Sensor ................................................................................... 20

DeviceNet ............................................................................................... 20

DeviceNet Interface ................................................................................. 21

DeviceNet Messaging ............................................................................. 22

MODULE STATUS LED .......................................................................... 23

NETWORK STATUS LED ....................................................................... 23

Service Contracts ................................................................................... 25

Deionizing Cartridge ................................................................................ 25

Cleaning ................................................................................................. 25

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SECTION VI

Service & Troubleshooting

Algae ...................................................................................................... 26

Checklist ................................................................................................ 26

Service Assistance ................................................................................. 27

SECTION VII

Diagrams

Flow Diagram .......................................................................................... 28

Wiring Diagrams ..................................................................................... 29

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Compliance

Unpacking

Preface

Listed to:

UL 61010-1 2nd Edition
CSA C22.2 #61010.1 2nd Edition

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 Mark on the rear of the unit. The
testing has demonstrated compliance with the following directives:

LVD, 73/23/EEC Complies with IEC/EN61010-1
EMC, 89/336/EEC IEC/EN61326-1
For any additional information, refer to the Declaration of Conformity that

shipped with the unit.

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, or does
not operate properly, contact the transportation company and file a damage
claim. Under ICC regulations, this is your responsibility.

After-sale Support

Thermo Electron Corporation is committed to customer service both during and
after the sale. If you have questions concerning the operation of your unit,
contact our Sales Department. If your unit fails to operate properly, or if you
have questions concerning spare parts or Service Contracts, contact our
Customer Service Department. Before calling, please obtain the following
information from the unit's serial number label:

- BOM number _________________________

- Serial number _________________________

- Software version (see page 14)____________

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Warnings

Section I Safety

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 (see After-sale Support).

Observe all warning labels.

Never remove warning labels.

Never operate damaged or leaking equipment.

Never operate the unit without cooling fluid in the reservoir.

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

Always empty the reservoir before moving the unit.

Always turn off the unit and disconnect the line cord from the power
source before moving the unit.

Additional safety warnings are posted throughout the manual. These warn­ings are designated by an exclamation mark inside an equilateral triangle with
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.

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Description

Section II General Information

The DIMAX Liquid to Liquid Heat Exchanger is designed to remove heat
loads from liquid-cooled instruments. The unit uses facility cooling or tap
water as the secondary cooling medium to remove heat from the primaryfluid
in the closed recirculation loop.

The unit consists of a plate heat exchanger, recirculation pump, stainless
steel reservoir, built-in replaceable deionizing cartridge, and a microprocessor
controller. The controller monitors temperature, controls resistivity and
displays all fluid flows.

The unit has 11 return lines. The flow rate in 8 of these lines as well as the
facility flow line is monitored by flow transducers. The unit also has fluid level
sensors designed to protect the unit's pump and your application. A resistivity
sensor monitors resistivity and sends a signal to the controller when replace­ment is necessary.

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Specifications

Temperature Range

Pumping Capacity

Facility Water

Requirements

1

25

20

15

10

Pressure PSI

5

20

15

+20°C to +30°C

10 20 30 40 50 60

Flow rate (gallons per minute)

Reservoir Volume

Gallons

Liters

Unit Dimensions

(H x W x D)

Inches

Centimeters

10

Pressure PSI

5

10 20 30 40 50

Flow rate (gallons per minute)

68.0
257

55 x 32½ x 32½

139.7 x 82.6 x 82.6

1. Lower limit determined by facility water temperature.

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Site

Facility Water

Requirements

Section III Installation

The unit should be placed in a location with easy access to a facility cooling
water and a drain.

For proper ventilation, a minimum clearance of 6 inches ( 15 centimeters) at
the rear of the unit is necessary.

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

For the unit to operate at its full rated capacity, the facility water flow rate must
be at least 50 gallons per minute and the facility water temperature must be
between 17°C to 22°C. If the facility water does not meet these requirements,
the cooling capacity will be reduced.

Facility water supply should not exceed 100 psi and the maximum pressure
differential between facility water supply and return should not exceed 65 psi.

Electrical

Requirements

Field Wiring

Configuration

Refer to the serial number label on the rear of the unit for the specific
electrical requirements of your unit.

For high-voltage 380-415/480V units only, ensure the voltage selector
switch is in the correct position to meet the power source rating. The
switch is located behind the main circuit breaker panel on the right­hand side of the unit.

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

Make sure an adequate ground connection is provided.

The configuration is a 3 phase, 4 wires with PE. Remove the circuit breaker
panel cover to access the DIMAX main circuit breaker (CB1). The Circuit
Breaker is rated for Ring Lugs (RL).

The copper wires of the multi-conductor flexible power cable are terminated
with ring lugs with #10 holes at both ends. Crimp the ring lugs.

One terminal is connected to the branch circuit breaker, and the other to CB1.

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