Laird Nextreme Series User manual

Nextreme Recirculating Chiller
Specification and User Manual Part Number 387004848

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www.lairdthermal.com
Any
information furnished by Laird and its agents, whether in specifications, data sheets, product catalogues or otherwise, is believed to be (but is not warranted as being) accurate and
reliable, is provided for information only and does not form part of any
contract with Laird. All specifications are subject to change without notice. Laird assumes no responsibility and
disclaims all liability for losses or damages resulting from use of or reliance on this information. All Laird products are s
old subject to the Laird Terms and Conditions of sale (including Laird’s
limited warranty) in effect from time to time, a copy of which will be furnished upon request.
© Copyright 2020 Laird Thermal Systems GmbH. All Rights Reserved. Laird, Laird Technologies, Laird Therm
al Systems, the Laird Logo, and other word marks and logos are trademarks or
registered trademarks of Laird Limited or an affiliate company thereof. Other product or service names may be the property of
third parties. Nothing herein provides a license under any Laird
or any third party intellectual property rights.

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Table of Contents
Revision History.................................................................................................................................... 6
Introduction ........................................................................................................................................... 7
Safety Precautions................................................................................................................................ 8
Guidelines for Safe Operation............................................................................................................. 8
Prevent Hazards ............................................................................................................................. 8
Personal Protective Gear ................................................................................................................ 8
Guidelines Regarding Electrical Equipment.................................................................................... 9
Inadmissible Operating Conditions ................................................................................................. 9
Specialized Knowledge ................................................................................................................... 9
Safety and Signaling Equipment Included in the Unit.......................................................................10
Guards...............................................................................................................................................11
In Case of Accidents .........................................................................................................................11
Model Number Description ................................................................................................................ 13
Specifications...................................................................................................................................... 14
Component Locations ........................................................................................................................ 17
Labels and Markings........................................................................................................................... 19
Optional System Features.................................................................................................................. 20
Coolant Filter Kit................................................................................................................................20
Flow Control Kit.................................................................................................................................21
Flow Control Kit with Filter ................................................................................................................ 23
Transport, Packaging and Storage ................................................................................................... 25
Safety ................................................................................................................................................ 25
Checking the Delivery Condition.......................................................................................................25
Symbols on the Packaging................................................................................................................25
Packaging..........................................................................................................................................26
Unpacking .........................................................................................................................................26
Handling the Unit While in the Packaging......................................................................................... 28
Transportation on casters ................................................................................................................. 29
Storing the Unit ................................................................................................................................. 29
Preparing the Unit for Further Transport...........................................................................................29
Installation Requirements .................................................................................................................. 31
Installation Procedure ........................................................................................................................ 32
Connect Hoses.................................................................................................................................. 32
Disconnect Hoses ............................................................................................................................. 33
Connecting Power............................................................................................................................. 34
Adding Coolant and Priming Unit...................................................................................................... 34
Chiller Operation ................................................................................................................................. 36
Wiring Diagram.................................................................................................................................... 38
Plumbing & Refrigeration Diagram ................................................................................................... 40
Performance Graphs........................................................................................................................... 41

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Thermal Performance ...................................................................................................................41
Pump Performance .......................................................................................................................42
Chiller Dimensions.............................................................................................................................. 44
Controller Display Panel Functions .................................................................................................. 46
Startup Screen .................................................................................................................................. 46
Main Screen ......................................................................................................................................46
Running the Pump ........................................................................................................................47
Choosing the Coolant Setpoint .....................................................................................................47
Running the system ......................................................................................................................47
Sleep Screen..................................................................................................................................... 48
Information Screen............................................................................................................................ 48
Alarms Display Screen...................................................................................................................... 49
Acknowledging Alarms.................................................................................................................. 49
Settings Screen ................................................................................................................................. 50
Setting Units ..................................................................................................................................50
Choosing the Coolant.................................................................................................................... 50
Customer Configurable Alarms..................................................................................................... 51
Flow Settings.................................................................................................................................52
Troubleshooting.................................................................................................................................. 54
Alarms .................................................................................................................................................. 55
Communications Interface................................................................................................................. 59
Instructions for Setup ........................................................................................................................ 59
Commands and responses: .............................................................................................................. 59
Command entry format ................................................................................................................. 59
Source ID ...................................................................................................................................... 59
Command Structure Examples .....................................................................................................59
System Maintenance and Service ..................................................................................................... 61
Safety ................................................................................................................................................ 61
Maintenance Schedule...................................................................................................................... 62
Preparing the Unit for Maintenance ..................................................................................................63
Verification of Safe State after Maintenance.....................................................................................63
Draining Procedure ...........................................................................................................................64
Coolant Maintenance ........................................................................................................................65
Replace filter: ................................................................................................................................ 65
Cleaning the Heat Exchanger ........................................................................................................... 65
Spare Parts .......................................................................................................................................... 66
Declaration of Conformity.................................................................................................................. 69
Decommissioning and Disposal........................................................................................................ 70
Temporarily Placing Out of Operation............................................................................................... 70
Returning the Unit to Service After Decommissioning...................................................................... 70
Final Decommissioning or Disposal..................................................................................................70

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Disposal of Operating Materials........................................................................................................70
Disposal of Refrigerant...................................................................................................................... 71
Return of the Unit to Laird .................................................................................................................71
Return Procedure................................................................................................................................ 72
List of figures ...................................................................................................................................... 73

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Revision History
REV
DATE
DESCRIPTION
A 05/22/19 Initial Draft for EMC Testing
B
10/16/2019
Manual for UL IEC Testing
C 05/06/2020 Initial release for customer

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Introduction
The Nextreme Recirculating Chiller is a refrigeration-based chiller designed for precise and reliable
temperature control of equipment. It can be used in several user applications such as Medical,
Analytical Instrumentation, Industrial and Semiconductor. This family of chillers offer different
configurable options for pumps selection, coolant flow control, supply pressure monitoring and
filtering. This chiller also uses a semi-closed system for low coolant maintenance.
This user manual provides necessary information to the customer for proper installation, operation,
communication and maintenance of the chiller.

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Safety Precautions
This section provides an overview of all the important safety aspects for optimal protection of
personnel as well as safe and trouble-free operation of the equipment.
The operating manual and warning instructions specified herein should be reviewed completely by all
personnel prior to operating the unit. Disregarding instructions within this manual may result in
considerable danger.
Guidelines for Safe Operation
Prevent Hazards
Hazards can be prevented by safety-conscious and anticipatory behavior of staff. Individuals working
with the unit should keep the following in mind:
Always keep a complete and legible copy of this operating manual (or the location at which it can
be found) available at the installation site of the unit.
Use personal protection equipment.
Unit personnel must be familiar with all operating elements of the unit before starting work on the
unit.
Only use the unit for its intended purpose.
Conduct inspections on a regular basis and ensure the unit is operational and free of damage.
All unit warning and information signs must be kept in legible condition. If a warning or
information sign is lost or illegible, it must be replaced.
Unit repairs may be carried out by qualified personnel only.
Any disruption or recognizable change concerning the unit should be reported to the responsible
person.
Adhere to the accident prevention regulations as well as any regional regulations.
Personal Protective Gear
To minimize health hazards, wearing personal protective gear is required when handling the unit. The
following personal protective gear must always be worn when handling the unit:
Protective footwear
For protection from falling parts and to prevent slipping.
When cleaning or performing maintenance or repair work on the unit, the following specific personal
protective gear is required:
Protective gloves
To protect the hands from rubbing, abrasions, cuts, or more serious injuries. To prevent burns when
touching hot coolant.
Protective eyewear
To protect the eyes against flying parts or splashing coolant.

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Guidelines Regarding Electrical Equipment
DANGER
Electrical danger
Work on electrical installations must be carried out only by trained and authorized
electricians.
Observe all regional regulations when connecting electrical equipment to mains. Be
aware of the connection diagram information (Refer to Wiring Diagram).
Electrical shock hazards exist if the electrical installations are defective or the
insulation fails during operation.
Switch off and disconnect the unit from the electrical mains and follow Lockout-Tagout
procedures whenever conducting service work.
Ensure continuity to ground and isolation from power lines.
Any changes regarding the operation of the unit can have an influence on safe
operation. All intended changes should be authorized by the manufacturer prior to
implementation.
Keep unauthorized persons away from the working area.
Inadmissible Operating Conditions
Operating the unit under improper conditions is not permitted as the operator’s safety cannot be
guaranteed. Some operating conditions not permitted are the following:
Using the unit for a purpose other than its intended use
Using of the unit when any part of it is damaged, not working properly, the electrical installation is
not correct, or the electrical insulation is damaged
Protective or safety equipment is non-functional, defective, improperly installed, or missing
The unit or operating parameters were modified without consulting the manufacturer
Operation in areas exposed to explosion hazards
Operation without a cooling media not recommended by the manufacturer
Any equipment connected to RS232 must be certified to IEC 61010-1/ IEC 60950-1/ IEC 62368-
1 should be connected to the DB-9 port.
Only Laird approved cable must be used to connect Flow meter to the unit. Refer to Spare Parts
to order this cable.
High Temperature Limit on Coolant Return - The maximum allowable coolant return (inlet) is
50°C. It is the responsibility of the customer to ensure that this limit is not exceeded. Laird
Thermal Systems recommends a thermal shutoff be used in conjunction with the equipment
being connected to the Recirculating Chiller. Methods include:
oA method to turn off the heat load from injecting additional heat into the coolant. This
will allow the Recirculating Chiller to reduce the temperature of the coolant further
until stable.
oA method that stops or restricts the coolant flow into the Recirculating Chiller. This will
result in a Coolant High Pressure alarm, which will shut down the system for safety.
oA method that interrupts the power to the Recirculating Chiller.
If any of these methods are activated, please reference the Alarms section.
NOTE
The manufacturer is not liable for damage occurring when using the unit in a way it was not
intended. This also voids Laird Thermal Systems’ warranty.
Specialized Knowledge
NOTE
Authorized persons
Servicing the unit is limited to individuals with adequate knowledge and training pertaining to the
required area of service. In some circumstances licensed
professionals are required to perform the
required service work.

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The activities listed Table 1 in may only be performed by personnel with specialized knowledge.
Table 1: Activities and specialized knowledge
Activities
Qualifications
Working on mechanical and / or
hydraulic installations
Industrial technician or sufficiently instructed personnel who can work on
the unit under the guidance of the manufacturer’s technical support or
installation instructions
Working on electrical installations
and equipment Skilled and licensed electrician
Working on refrigeration
components and systems Skilled and licensed refrigeration technician
Safety and Signaling Equipment Included in the Unit
The unit is equipped with the following safety equipment:
The maximum pump pressure is limited by a ‘coolant supply high pressure’ alarm condition.
When the coolant supply pressure exceeds a pre-set value, the entire unit is turned off by the
controller. In addition to this, there is a secondary customer configurable maximum pump
pressure alarm. This alarm alerts the customer once the pressure reaches a pre-set value, it
doesn’t turn off the unit. This secondary pressure alarm is ‘Off’ by default.
The maximum current drawn by the pump is limited by a pump overcurrent switch. If the pump
consumes more than allowable limit continuously, the switch opens the circuit and cuts power to
the pump.
The minimum coolant level in the system is detected by a ‘low fluid level’ alarm condition
triggered by an optical level switch. When the coolant level drops below the LOW” level marking
on the front of the chassis, the controller shuts off the entire unit.
Coolant leakage out of the system is detected by the ‘low coolant pressure’ alarm condition.
When the coolant supply pressure sensor detects a pressure below the pre-set value, this alarm
condition is triggered, and the controller shuts off the entire unit
Refrigerant leakage from the unit is detected by a ‘low refrigerant suction pressure’ alarm in the
unit. When the refrigerant suction pressure falls below the pre-set value, the controller shuts off
the entire unit
The maximum pressure in the refrigeration system is limited by a refrigerant high-pressure
switch. This switch is located on the compressor discharge line and switches power from the
main controller to power board. This in turn opens and closes power to the compressor. This
switch opens when the pressure reaches 29.3 bar (425 psi). The switch closes again when the
refrigerant pressure falls below 22.4 bar (325 psi) pressure.
Controller has a freeze protection incorporated into the LCD. The default temperature selection
that can be made is only 10C to 40C, when the coolant selected by the customer is water
(default). Depending on the other coolant options selected the setpoint temperature can be
selected to below 10C value. More details are given under Choosing the Coolant
The coolant supply temperature is monitored by the controller. There are two temperature delta
alarms monitoring this. The low temperature delta alarm alerts the customer if the coolant supply
temperature is not within certain pre specified temperature delta below the temperature set point
in a specified amount of time, after starting the unit or changing the set point. Similarly, the high
temperature delta alarm alerts the customer if the coolant supply temperature is not within certain
pre-specified temperature delta above the temperature set point in a specified amount of time
after starting the unit or changing the set point.
The compressor current drawn is limited by a 30A fuse on NRC1200 and NRC2400 models.
Refer to spare parts for a replacement fuse.
Optional alarm with flow sensor kit option: The circulated coolant flow rate is monitored by a flow
sensor. If the coolant flow rate falls below a pre-specified value by the customer, then the
controller shuts off the entire unit.

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Guards
Direct access to hazardous parts or areas of the unit is prevented by the unit cover. The unit cover
may only be removed for maintenance or repairs. It must be closed prior operating the unit. Note:
warranty conditions before opening the guards.
Figure 1 Guards
In Case of Accidents
Should you or another person be injured when working with the unit, do the following:
Stay calm
Perform first aid
Always call the company’s first aid personnel
If necessary, call the applicable emergency number
First Aid at Accidents with R513A
The unit contains the refrigerant R513A in a closed-circuit system. If the system is damaged, the
cooling fluid can spill and cause hazard including but not limited to the following occurrences:
Fast vaporizing fluids can lead to frostbite.
Vapor is heavier than air and can lead to asphyxiation in enclosed, poorly ventilated or low-lying
areas.
Misuse or intentional inhalation abuse may cause death without warning symptoms, due to
cardiac effects and may also cause arrhythmia.
Always adhere to manufacturer safety regulation when handling spilled refrigerant.
Environmental Issues
Environmentally conscious and anticipatory behavior of staff helps avoid environmentally hazardous
events. The following apply for environmentally conscious behavior:
Environmentally hazardous substances must be stored in appropriate containers to avoid
releasing them into the soil or drainage systems.
Environmentally hazardous substances must be used or disposed of according to regional
regulations.
When dealing with working fluids, always be aware of the safety data sheet of the corresponding
manufacturer.

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Refrigerant R513A
The refrigerant used in the unit is classified to be slightly dangerous to groundwater and contains
fluoridated greenhouse gas.
Do not release into canalization or waters.
Do not release into atmosphere.
Storage only in approved containers.
Waste disposal only by qualified contractors.
Always adhere to manufacturer safety requirements when handling operating supplies.

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Model Number Description
NRC2400-A1-20-ST1-_ _ _
Basic
Model No.
Cooling
Engine
Electrical
Configuration
Pump
Options
System
Options
NRC1200
1,200 Watts
NRC2400
2,400 Watts
NRC5000
5,000 Watts
A1
Air Cooled /
R513A
W1
Water Cooled
/ R513A*
10
100-120V~, 1ph,
50/60Hz †
20
220-230V~, 1ph,
50/60Hz
SC1
Stainless,
Centrifugal
Pump ††
SC2
Stainless,
Centrifugal
Pump ††
ST1
Stainless,
Turbine Pump
H
DI Water Compatible
(High Purity)
Notes:
System option codes are added to the end of the model number in alphabetical order.
* Only available with NRC2400 and NRC5000 models.
† only available with NRC1200.
†† Only available with NRC5000 model.
See Laird Thermal Systems Online Wizard Configurator for Manufacturer’s Part Number.
www.lairdthermal.com

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Specifications
TECHNICAL SPECIFICATIONS
Model
NRC1200 (120V or 230V)
Performance
Cooling Capacity1
1,200 Watts
(4,095 BTU/hr)
Setpoint Range
-10°C to 40°C
(14°F to 104°F)
Temperature Stability ±0.1°C (±0.2°F)
Nominal Flow Rate1 (50Hz / 60Hz)
15 lpm @ 1.5 bar / 15 lpm @ 2.6 bar
(3.9 gpm @ 22 psi) / 3.9 gpm @ 38 psi)
Maximum available pressure 5.3 bar (77 psi)
Refrigerant R 513A
Storage
Temperature, w/o coolant
-25°C to 70°C
(-13°F to 158°F)
Humidity 5% to 95%, non-condensing
Operation
Coolant Water or Water/Glycol
Temperature2
15°C to 40°C
(59°F to 104°F)
Relative Humidity 30% to 80%
Altitude
2,000 meters
(6,560 feet)
Input
Voltage 100 – 120 VAC or 220-230 VAC
Frequency 50/60 Hz
Physical
Dimensions, W x D x H
45 X 52 x 67 cm
(17.7 x 20.5 x 26.4 in)
Weight (w/o coolant) 48 kg (106 lbs)
Coolant Capacity 5 L (1.3 gal)
Couplings 1/2” NPT
Compliance
•UL Mark for Laboratory Equipment
(ANSI / UL / CSA / IEC EN 61010-1 Edition 3)
1. Nominal capacity rating is given at a 20°C (68°F) setpoint, 20°C (68°F) ambient temperature, sea level, and 60Hz
operation.
2. For ambient conditions outside this range, please contact Laird Thermal Systems.

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TECHNICAL SPECIFICATIONS
Model
NRC2400
Performance
Cooling capacity1
2,400 Watts
(8,190 BTU/hr)
Setpoint Range
-10°C to 40°C
(14°F to 104°F)
Temperature Stability
±0.1°C (±0.2°F)
Nominal Flow Rate1(50Hz / 60Hz)
15 lpm @ 1.6 bar / 15 lpm @ 2.7 bar
(3.9 gpm @ 23 psi / 3.9 gpm @ 39 psi)
Maximum available pressure
5.3 bar (77 psi)
Refrigerant
R 513A
Storage
Temperature, w/o coolant
-25°C to 70°C
(-13°F to 158°F)
Humidity
5% to 95%, non-condensing
Operation
Coolant
Water or Water/Glycol
Temperature2
15°C to 40°C
(59°F to 104°F)
Relative Humidity
30% to 80%
Altitude
2,000 meters
(6,560 feet)
Input
Voltage
220-230 VAC
Frequency
50/60 Hz
Physical
Dimensions, W x D x H
48 X 52 x 75 cm
(18.9 x 20.5 x 29.5 in)
Weight (w/o coolant)
54 kg (119 lbs)
Coolant Capacity
5 L (1.3 gal)
Couplings
1/2” NPT
Compliance
•UL Mark for Laboratory Equipment
(ANSI / UL / CSA / IEC EN 61010-1 Edition 3)
1. Nominal capacity rating is given at a 20°C (68°F) setpoint, 20°C (68°F) ambient temperature, sea level, and 60Hz
operation.
2. For ambient conditions outside this range, please contact Laird Thermal Systems.

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TECHNICAL SPECIFICATIONS
Model
NRC
50
00
Performance
Cooling Capacity1
5,000 Watts
(17,060 BTU/hr)
Setpoint Range
-10°C to 40°C
(14°F to 104°F)
Temperature Stability
±0.1°C (±0.2°F)
Nominal Flow Rate1(50Hz / 60Hz)
15 lpm @ 1.7 bar / 15 lpm @ 2.8 bar
(3.9 gpm @ 25 psi / 3.9 gpm @ 41 psi)
Maximum available pressure
5.3 bar (77 psi)
Refrigerant
R 513A
Storage
Temperature, w/o coolant
-25°C to 70°C
(-13°F to 158°F)
Humidity
5% to 95%, non-condensing
Operation
Coolant
Water or Water/Glycol
Temperature
2
15°C to 40°C
(59°F to 104°F)
Relative Humidity
30% to 80%
Altitude
≤2,000 meters
≤(6,560 feet)
Input
Voltage
220-230 VAC
Frequency
50/60 Hz
Physical
Dimensions, W x D x H
63 x 59 x 91 cm
(24.8 x 23.2 x 35.8 in)
Weight (w/o coolant)
100 kg (220 lbs)
Coolant Capacity
5 L (1.3 gal)
Couplings
1/2” NPT
Compliance
•UL Mark for Laboratory Equipment
(ANSI / UL / CSA / IEC EN 61010-1 Edition
3)
1. Nominal capacity rating is given at a 20°C (68°F) setpoint, 20°C (68°F) ambient temperature, sea level, 60Hz operation,
and the ST1 pump.
2. For ambient conditions outside this range, please contact Laird Thermal Systems.

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Component Locations
Figure 2 Isometric Views of Unit
Figure 3 Top View

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Figure 4 Front View Figure 5 Rear View
Figure 6 Side View

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Labels and Markings
Figure 7 Marking on Unit
Figure 8 Labels on Unit
1 – Coolant level low marking
2 – Coolant level high marking
3 – Refrigerant information label
4 – Laird serial number label
5 – Coolant return label (to the unit)
6 – Coolant supply label (to the unit)
7 – Caution hazardous voltage label:
This label indicates location on the
unit on the unit where power
connections need to be made by the
user. Caution labels on the unit such
as this must always be easily
readable. Illegible caution labels must
be immediately replaced.
8 – Caution label: temperature of the
coolant into the system must not
exceed 50°C
9 – QR code for information on chiller

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Optional System Features
Coolant Filter Kit
The Coolant filter is hot swappable with a bypass valve. When filter cartridge change is required, the
Filter can be put in bypass mode in order to change the cartridge without affecting flow. Note: For
assembling the fittings, use PTFE thread sealant tape provided with the kit to ensure a tight seal and to
prevent leakage
Figure 9 Coolant Filter Kit Part List
Figure 10 Bypass mode of Filter/Coolant Filter Kit assembled on Unit
Bypass Mode