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Chiller with Screw CompressorsGEA Grasso BluAstrum

Product Information (Translation of the original text)L_621011_3

COPYRIGHTAll Rights reserved.No part of this publication may be copied or pub-lished by means of printing, photocopying, microfilmor otherwise without prior written consent of

• GEA Refrigeration Germany GmbHherein after called manufacturer. This restrictionalso applies to the corresponding drawings and dia-grams.

LEGAL NOTICEThis product information is a part of the documenta-tion for the Grasso scope of delivery and serves asproduct presentation and customer advisory service.It contains important information and technical dataregarding the product.The product information makes the technical, prod-uct related and commercial information available tothe customer in detail before the sale of the product.This product information serves as a support andtechnical advisory service for our partners and cus-tomers as well as for the marketing team. Apart fromserving as the medium for transfer of product know-how, it also forms the basis for product demonstra-tions, the organisation and conduction of technicalseminars as well as the technical support at tradefairs.This product information should be supplementedwith the information about the industrial safety andhealth related regulations at the site of installation ofthe product. The regulations vary form place to placeas a result of the statutory regulations applicable atthe site of installation of the product and are there-fore have not been considered in this product infor-mation.In addition to this product information and the acci-dent prevention regulations applicable for therespective country and area where the product isused, the accepted technical regulations for safe andprofessional work must also be observed.This product information has been written in goodfaith. However, GEA Refrigeration Germany GmbHcannot be held responsible for any errors that thisdocument may contain or for their consequences.GEA Refrigeration Germany GmbH reserves theright to make technical changes during the course offurther development of the equipment covered bythis product information.Illustrations and drawings in this product informationare simplified representations. As a result of theimprovements and changes, it is possible that the

illustrations do not exactly match the current devel-opment status. The technical data and dimensionsare subject to change. No claims can be made onthe basis of them.

Product Information | GEA Grasso BluAstrumChiller with Screw Compressors

2 GEA Refrigeration Germany GmbH | L_621011_3 | Generated 05.03.2015

PREFACEThe figure on the front page shows the chiller withhousing (optional equipment feature).


GEA Refrigeration Germany GmbH | L_621011_3 | Generated 05.03.2015 3

TABLE OF CONTENTS1 SERIES OVERVIEW 9

1.1 Chiller with screw compressors - BluGenium series 102 TECHNICAL SPECIFICATIONS 123 SCOPE OF DELIVERY 144 CASING 155 OPERATION LIMITS 166 DESCRIPTION OF DESIGN AND FUNCTION 18

6.1 Design, applications 186.2 Mode of operation 196.3 Main components 19

6.3.1 Compressor 196.3.2 Compressor drive motor 206.3.3 Coupling 206.3.4 Evaporator 206.3.5 Condenser 216.3.6 Oil separator 216.3.7 Oil cooler 226.3.8 Suction filter combination SFC 22

6.4 Safety devices 237 CONTROLLER 24

7.1 Low-voltage installation with control unit 247.2 TouchPanel 257.3 Monitoring and display of process values 267.4 Input signals and output signals 28

8 DIMENSIONS, WEIGHTS, FILL QUANTITIES AND CONNECTIONS 298.1 Series BluAstrum 500 ... BluAstrum 1800 298.2 Refrigerant and oil filling quantities 31

9 PERFORMANCE CHARACTERISTICS 329.1 Performance characteristics BluAstrum 500 ... BluAstrum 1800 32

10 SOUND PRESSURE LEVEL 3311 MANUFACTURER INFORMATION 34



TABLE OF FIGURESfig. 1 BluAstrum, front view 9fig. 2 Housing, view 15fig. 3 Arrangement of the compressor 19fig. 4 Arrangement of the compressor drive motor 20fig. 5 Arrangement of the coupling, 20fig. 6 Arrangement of the evaporator 20fig. 7 Position of the condenser 21fig. 8 Arrangement of the oil separator 21fig. 9 Arrangement of the oil cooler 22fig. 10 Arrangement of the suction filter combination SFC 22fig. 11 Communication options (interfaces) 24fig. 12 General screen layout 25fig. 13 Input signals and output signals for a GEA Grasso BluAstrum 28fig. 14 BluAstrum 500 ... BluAstrum 1800 29



1 SERIES OVERVIEW

fig.1: BluAstrum, front view

Capacity range 550 - 1730 kW12/ 6°C (coolant temperature) / 30/ 35°C (cooling medium temperature)

Grasso screw compressors Grasso SC Series, types G, H, L, M, N, RVth = 570 ... 1590 m³/h

Screw compressor package Grasso SP1

Chiller BluAstrum

Evaporator type Fully welded plate heat exchanger with integrated separator

Working principle flooded evaporation

Liquid separator integrated

Condenser type Fully welded plate heat exchanger

Condenser version(R)

air cooled condenser or evaporative condenser(not included in scope of delivery)

Transport 1 part


Series overview


1.1 Chiller with screw compressors - BluGenium series

BluAstrum Chiller series

9 Nominal chiller capacity (kW) related to cold water operation 12°C/ 6°C

Y Condenser version

BluAstrum = Chiller series

9 Nominal chiller capacity 4500 min-1 kW related to cold water operation 12°C / 6°C

Compressor type Nominal capacity in kW

G 500

H 800

L 900

M 1000

N 1500

R 1800

(Yy) = Condenser version

(W)Water/liquid-cooled plate heat exchanger (fully welded),Chiller for indoor installation

(Wx)Water/liquid-cooled plate heat exchanger (fully welded),Chiller for outdoor installation

Series overview Product Information | GEA Grasso BluAstrumChiller with Screw Compressors


(R)Evaporation or air cooled condensers (not in the scope of delivery for GEARefrigeration Germany),Chiller for indoor installation

(Rx)Evaporation or air cooled condensers (not in the scope of delivery for GEARefrigeration Germany),Chiller for outdoor installation

Naming example

BluAstrum 1000 (W) Chiller with screw compressor, flooded evaporation with integrated separator(BluAstum)Nominal capacity of the chiller 1000 kW (1000)Evaporator and condenser designed as fully welded plate heat exchanger,Chiller for indoor installation (W)


Series overview


2 TECHNICAL SPECIFICATIONS

Hint!

The BluAstrum is manufactured and delivered according to technical specifications. On thebasis of the standard equipment, optional equipment variants can be considered.

Standard equipment

Operating pressure: max. 28 bar

Intended environment: closed machine rooms

Ambient temperatures: +5°C to +40°C(+5°C to +32°C with housing)

High above sea level: ≤ 1000m above sea level

Secondary refrigerant outlet tem-perature1:

-15°C/ 6°C/ 15°C

Electric motor: scope of delivery

Refrigerant: R717

Type of oil: highly refined mineral oils, e.g. CPI1009-68 or approved Polyalphaolefinoil (PAO) like Klüber Summit R100 or Klüber Summit R200

Caution!

Please contact the manufacturer in case of other types ofoil.

Oil cooling: liquid cooled (internal piping)refrigerant cooled (condenser design type (R) only)

Oil heating: scope of delivery

Oil filter: single stage filter

Spare oil filter: without

Oil level switch: without

Pressure sensors: directly in the pipe

Separate pressure switch: without

Overflow valve: scope of delivery

1 Temperature difference secondary refrigerant maximum 10K/ standard 5K

Technical specifications Product Information | GEA Grasso BluAstrumChiller with Screw Compressors


Standard equipment

Safety valve HP / LP: double safety valve with change-over valve

Flow monitor: mechanical

Controller: GSC TP

Power panel and frequency con-verter: scope of delivery, cable entry from below

Colour: RAL 5014 (dove grey)

Housing: without

Vibration isolators: without

Approval pressure equipment: CE-PED, Module H (piping)

Documentation: 2x hard copy + 1 CD ROM

Optional equipment

Spare oil filter: can be delivered

Housing: can be delivered, colour: RAL 7035 (pebble grey)

Communication: Profibus DPModbus RTUModbus TCP

Electric motor: customer specific design possible on request

Flow monitor: electronic

Vibration isolators: can be delivered

Approval pressure equipment: CE-PED, Module H1 (complete chiller)


Technical specifications


3 SCOPE OF DELIVERY

The chillers of the BluAstrum series consist of thefollowing components:

– Screw compressor,

– Evaporator with integrated separator

– Condenser(design type (R): not included in scope of deliv-ery),

– Electric motor with coupling and flange,

– Oil supply system with oil separator,

– Oil cooler,

– Oil filter,

– Suction filter

– Check valves on the suction and dischargesides,

– Speed-dependent capacity control,

– Monitoring and safety devices,

– Frequency converter

– Low-voltage installation with control device GSCTP,

– HP-receiver (for condenser design type (R)only).

All components are fully mounted. Low-voltageinstallation with frequency converter and controldevice are wired.The oil separator is arranged horizontally and moun-ted on the steel bearings bolted to the base frame.The oil is cooled in a water or refrigerant cooled oilcooler or in the heat recovery unit (for condenserdesign type (R)).By default, a rigid installation on the foundation isintended. An installation with vibration isolators isavailable optionally.All connections are closed tight.

Service fluidsThe BluAstrum chillers are supplied without refriger-ant and without refrigerating machine oil; they are fil-led with dry nitrogen (approx. 0,2 bar ... 0,5 bar over-pressure).When commissioning a start-up or a factory accept-ance test (FAT) the refrigerating machine oil is inclu-ded in the scope of delivery.

Insulation

Specification without soundproof housing:The insulation is done using polyurethane foam withaluminium cladding 50 mm.Specification with soundproof housing:The insulation is done using Armaflex 18 mm.PaintingThe painting is done with 2 component EP paint RAL5014 with a coating thickness of 120 µm.

ApprovalAfter acceptance, the chillers of the BluAstrum ser-ies get a CE label in accordance with the PressureEquipment Directive 97/23/EC.

DocumentationEach chiller of the BluAstrum series is deliveredwith user documentation. The user documentationcontains:

– Drawings and part lists,

– Safety Instructions,

– Operating manual(with the description of the refrigerant and oil cir-cuits, the instructions for installation, start-up andmaintenance),

– Documentation of the main components (electri-cal motor, control),

– Maintenance schedule

– Acceptance certificate for components requiringacceptance

Scope of delivery Product Information | GEA Grasso BluAstrumChiller with Screw Compressors


4 CASING

fig.2: Housing, view

As an additional option GEA Refrigeration Germany offers sound insulation for your machine room using a newlydeveloped casing.The double-walled and down-closed housing construction with insulating material reduces the sound pressurelevel measured outside by around 5 dB(A) and thereby achieves a significant noise reduction.In addition the housing also serves as protection against physical contact.An ventilation system keeps the temperatures in the interiors within limits and simultaneously prevents heat los-ses on the unit.Individual wall elements can be quickly and easily dismantled, so that the access for maintenance work isensured. Alternatively the entire housing can be removed completely by loosening a few screws in the baseframe.Last but not the least, the filigree design combines the functional requirements with modern, high-quality optics.


casing


5 OPERATION LIMITS

The Grasso BluAstrum chillers (flooded evaporation) can be operated under the most varied operation condi-tions within the given limits of application according to the requirements involved. The limits of application listedbelow are based on the operational principle of the Screw Compressor, thermodynamic relations, used vesselsand safety devices and practical operating conditions. The appropriate Compressor model design should beselected for the particular operating conditions.

Refrigerant NH3

Speed n min-1 min 1000

max 4500

Suction pressure p0 bar (a) minmax

1.97.3

Outlet temperature of water as sec-ondary refrigerant

tWA °C minmax

+ 2.5+ 15

Outlet temperature with frost-resist-ant secondary refrigerants

tWA °C minmax

- 15+ 15

Discharge pressure p bar (a) minmax

7.319.3

Condenser inlet temperature ofcooling medium

tKwe °C minmax

1240

Condensing temperature t °C minmax

1554

Discharge temperature at compres-sor outlet

t1 °C minmax

50100

Pressure ratio (p/p0) π - min > 1.5

Pressure difference (p-p0) 1 Δp bar min 3 2

Notes

1. When considering a specific application, all theconditions specified in the table must be takeninto account and adhered to.

2. If the specified limits are exceeded for a specificapplication, the manufacturer must be consulted.

3. In addition to the operation limits given in thetables, consider the operating conditions whichmust be observed for the compressor (e.g. start-

up regime, oil pressure, oil quantity, type of oiletc.).

4. The oil temperature at the compressor inlet mustbe least 18°C.

5. The specified data refer to the operating condi-tions of a cooling or air-conditioning system.During downtime or start-up, the limiting valuesmay be exceeded or fallen short of for a short(never //long-term) period of time.

Operation limits Product Information | GEA Grasso BluAstrumChiller with Screw Compressors


1 The given pressure difference ensures reliablecompressor operation. Furthermore, allowance mustbe made for the pressure difference necessary forthe control valves fitted in the refrigerating plant.2 To comply with the minimum pressure difference,we recommend customer to provide a water-side 3-way valve.


Operation limits


6 DESCRIPTION OF DESIGN AND FUNCTION

6.1 Design, applications

The BluAstrum Chiller Programme provides provencomponents as complete refrigeration systems formedium and large refrigeration and/or air condition-ing requirements.Main fields of application:

– cold water for air conditioning

– cold brine for air conditioning with combined icestorage operation

– cold water for industrial processes

– cold brine for industrial processes

– (cold) and warm water for heat pump operationIn principle, these refrigeration systems use ammo-nia as refrigerant which is characterized by a highrefrigeration capacity, low energy consumption and afavourable price and are completely neutral towardsthe environment.Equipped with the screw compressor series, theBluAstrum chillers cover the refrigeration range of600 to 1800 kW for cold water.The output ranges are defined by 6 sizes of thescrew compressor series.The BluAstrum chillers work with flooded evapora-tor systems on the basis of gravity recirculation andcan be fitted with a variety of condenser types.The chillers have a modular design and comprise thefollowing main modules:

• Standard screw screw compressor package

• Heat exchanger subassembly with integrated liq-uid separator and de-oiling system

• Low-voltage installation with frequency converterand control device

The modular construction of the chillers is modelledon the construction of the screw compressor pack-ages. The oil separator and the integrated liquid sep-arator are arranged horizontally. The arrangement ofthe components ensures the extremely compactdesign of the chillers.Only flat plate evaporators with integrated separatorare used as evaporators.On the condenser side, the following versions areused:

• Plate type condenser

• evaporative condenser (R)

• air-cooled condenser (R)The BluAstrum chillers are supplied, as a standard,ready for connection, fully piped and wired.The BluAstrum (R) chillers are supplied in such acomplete state that on site only the air cooled con-denser or the evaporative condenser has to be inte-grated.The heat exchangers are designed according to theparameters of a project, taking into account a maxi-mum energy efficiency on the evaporator and thecondenser side.

Hint!

Ensure a separate condenser is instal-led for each BluAstrum in case of anoperation with external condenser(version BluAstrum (R))! It is not per-mitted to operate multiple BluAstrumwith only one common condenser.

The standard version of the chillers is equipped witha freely programmable control.All operating and fault signals as well as the processvariables can be read from a display.The control device is operated via a Touch Panel.The chillers are supplied without refrigerant and with-out refrigerating machine oil; they are filled with drynitrogen (approx. 0,2 bar ... 0,5 bar overpressure).When commissioning a start-up or a factory accept-ance test (FAT) the refrigerating machine oil is inclu-ded in the scope of delivery.Each chiller is supplied with user documentation con-taining a description of the refrigeration cycle, com-missioning instructions, an operating manual and themaintenance instructions.Separate assembly instructions are provided fordetailed information about the screw compressors.

Description of Design and Function Product Information | GEA Grasso BluAstrumChiller with Screw Compressors


6.2 Mode of operation

The screw compressor draws refrigerant gas fromthe liquid separator and compresses it to condensa-tion pressure.The refrigerant liquefies as it is cooled and is expan-ded in the liquid separator.In the liquid separator, the refrigerant vapour and liq-uid are separated.The liquid is led through the evaporator by gravitycirculation (thermosiphon principle). As result of liq-uid refrigerant absorbing heat (flooded evaporation)the refrigerant evaporates and the secondary refrig-erant is cooled down.During the operation of the screw compressor, oil isinjected into the working chamber and then separa-ted again from the refrigerant in the discharge sideoil separator.The oil which has heated up in the compressor iscooled in an oil cooler to reach the inlet temperatureand passes an agglomerator.Despite the highly effective oil separation system, oilpenetrates to the low pressure side of the chiller.A special automatic and maintenance-free oil return-ing system developed by GEA Refrigeration Ger-many GmbH returns the oil from the liquid separatorback to the screw compressor.This is a basic precondition for a fault-free operationof the evaporator system.The capacity of the screw compressor is controlledusing the frequency converter of the compressordrive motor in a step-less manner. Thus the coolingcapacity can be maximum optimized on the effec-tively required cooling capacity in the range 22% to100% (depending on the application area).The Vi capacity slide is hydraulically adjusted andactivated using 2 solenoid valves. The position of theVi control slide is displayed on the compressor con-trol.

6.3 Main components

6.3.1 Compressor

fig.3: Arrangement of the compressor

The screw compressor is characterized by a com-pact design, a high reliability, high quality compo-nents and the ease of maintenance.Screw compressors are dual rotor positive displace-ment machines that run according to the principleand are operate by oil injection.The screw compressor is operated with ammonia(NH3, R 717) as the refrigerant. CPI1009-68 is rec-ommended as the refrigerating machine oil.Various series and sizes of screw compressors areavailable for different fields of application.The screw compressor is driven directly by the com-pressor drive motor via a coupling.

Hint!

The documentation of the screw com-pressor (installation instructions, partlists, drawings) is a part of the productdocumentation.


Description of Design and Function


6.3.2 Compressor drive motor

fig.4: Arrangement of the compressor drive motor

Standard: The compressor is driven by an air-cooled 2-pole electric motor IP23 with an operatingvoltage of 400 V; 50 Hz using a coupling.The speed of the electric motor is controlled using afrequency converter (1000 min-1 ... 4500 min-1) andis designed as a flange mounted motor with base,IMB35 configuration.Optional: Other protection types and operating vol-tages on request.

Hint!

The documentation of the electricmotor (operating manual) is a part ofthe product documentation.

6.3.3 Coupling

fig.5: Arrangement of the coupling,

The coupling helps in transmission of torquebetween compressor and compressor drive motor.The non-clutch design of the coupling brings aboutthe neutralisation of the otherwise disturbing influen-ces such as axial or radial forces, vibrations or offset.Speed fluctuations and speed shocks are dampedand cushioned, torsional vibrations are reduced.

Hint!

The documentation of the coupling(operating manual) is a part of theproduct documentation.

6.3.4 Evaporator

fig.6: Arrangement of the evaporator

In the evaporator heat is absorbed from the secon-dary refrigerant (which is thereby cooled) by way ofevaporation of the refrigerant. The evaporator worksby the principle of overflowed evaporation.Liquid drops are effectively separated in the liquidseparator integrated into the evaporator.In the case of external condensing systems (RemoteVP and Remote LP), a maximum level indicator isinstalled in the liquid separator to provide additionalprotection against overfilling. The suction pressureand secondary refrigerant outlet temperature aremonitored to provide reliable protection againstfreezing.Design, manufacture and acceptance of the evapo-rator with integrated liquid separator comply with therequirements of the Pressure Equipment Directive.



Hint!

The documentation of the evaporator(operating and maintenance instruc-tions, acceptance certificate) is a partof the product documentation.

6.3.5 Condenser

fig.7: Position of the condenser

In the condenser the compressed refrigerant vapouris desuperheated and liquefied by dissipating theenergy absorbed in the evaporator and compressorto the cooling medium (heating).Design, manufacture and acceptance of the con-denser comply with the requirements of the PressureEquipment Directive.

1. Condenser designed as a plate heat exchanger(included in the scope of delivery)

Hint!

The documentation of the condenser(operating and maintenance instruc-tions, acceptance certificate) is a partof the product documentation.

2. Condenser design type (R):Client-provided air-cooled condenser (not a partof scope of delivery)Client-provided evaporative condenser (not apart of scope of delivery)

Hint!

Ensure a separate condenser is instal-led for each BluAstrum in case of anoperation with external condenser(version BluAstrum (R))! It is not per-mitted to operate multiple BluAstrumwith only one common condenser.

6.3.6 Oil separator

fig.8: Arrangement of the oil separator

The design of the oil separator is standardised and itis characterised by less oil carry-over.The oil separator is installed horizontally.

Hint!

The documentation of the oil separator(operating and maintenance instruc-tion, acceptance certificate) is a part ofthe product documentation.




6.3.7 Oil cooler

fig.9: Arrangement of the oil cooler

The oil cooler is used for cooling the oil heated in thecompressor in order to ensure sufficient oil viscosityfor supplying to the compressor. The oil temperatureis unregulated.The minimum possible oil inlet temperature issecured by a 3-way valve in the oil circuit.The oil cooler is complete piped on water side.

Hint!

The documentation of the oil cooler(operating manual, acceptance certifi-cate) is a part of the product documen-tation.

6.3.8 Suction filter combination SFC

fig.10: Arrangement of the suction filter combination SFC

The suction filter combination SFC contributes sub-stantially to the high working reliability of the compo-nents and the overall product.

The suction filter combination SFC prevents dirt par-ticles entrained in the intake stream from enteringthe screw compressor unit. The flow through the suc-tion filter element is from the inside to the outside. Itis designed so that monitoring is not required. The fil-ter element can be cleaned.

Hint!

The documentation of the suction filtercombination SFC (operating manual,acceptance certificate) is a part of theproduct documentation.



6.4 Safety devices

The chiller is equipped with a comprehensive soft-ware safety chain preventing too high pressures,temperatures and the hazard of freezing.A suction as well as discharge pressure control anda rated current limitation control cause the Vi controlslide to move towards the minimum position when-ever the adjustable limit values are exceeded.Due to the applicable laws and regulations, variouscertifying bodies require a vast range of auxiliaryequipment with independent safety devices.Following safety equipment is included if the chiller isdelivered with CE label according to EN 378.

– Overflow valve (on the compressor) from dis-charge to suction side

– Double safety valve with pressure relief connec-tion

Hint!

The contractors must guarantee thatthe pressure relief connection is safelyoperated to the outside.

– Safety pressure limiter (2 independent switchingpositions with manual internal and external reset)

– Pressure relief device for each vessel, whichmight be contain liquid refrigerant (true for allvessels with a diameter > 152 mm and a volume> 100 litres). This is not valid for oil separatorsand oil filters.

The scope of delivery for the chiller does not includethe following safety devices in relation to escapingammonia:

– Protective equipment (health and industrialsafety)

– Gas warning device

In case of delivery according to EN 378 with CElabel, all parts of the documentation mentioned in theregulation are also delivered in the national languageof the place where the chiller is installed.All other approvals have to be agreed upon sepa-rately.




7 CONTROLLER

7.1 Low-voltage installation with controlunit

The low voltage installation with control device con-sists of the control unit with operating and displayunit, indicator lights for ”Running”, ”Warning”and ”Fault”, emergency stop button, coupling ele-ments as well as the housing.In the standard version, the low voltage installationwith control device is mounted directly on the BluAs-trum.

The low voltage installation with control deviceusually performs the following functions:

– Display of all important physical and technicalparameters, e.g. pressure, temperature, motorcurrent, capacity, number of operating hours,operating mode and status signals

– Automatic start up and shut down of the BluAs-trum as well as capacity regulation depending onthe water (brine) outlet temperature.

– Monitoring of all operating parameters

– Compressor capacity limitation, in case themeasured discharge pressure, suction pressure,secondary refrigerant temperature or motor cur-rent indicate overload

– Fault memory with date and time

– Wire failure detection for all analogue input sig-nals

– Password protection for preventing unauthorisedaccess to important parameters

– Non-volatile saving of program

– Possibility of communication with higher-rankingcontroller via MPI(optionally via Profibus-DP, Modbus RTU orModbus TCP)

– Remote access (optional via Ethernet)

Hint!

The communication guideline offersdetailed information about communi-cation of the GSC TP. The communica-tion guideline can be made availablebefore a planned installation.

fig.11: Communication options (interfaces)

Controller Product Information | GEA Grasso BluAstrumChiller with Screw Compressors


7.2 TouchPanel

The TouchPanel is the interface between the manand the machine.All switching, operating and control actions are car-ried out via this TouchPanel.The TouchPanel is available in different languages.

fig.12: General screen layout

1 Information bar

2 Navigation bar with "Pull down" menus

3 Main display with selection areas

4 Function key bar


Controller


7.3 Monitoring and display of process values

The following operating parameters are continuously monitored and displayed by the control:

Name Remark

Suction pressure Suction pressure in bar (a) and the corresponding evaporation temperature in°C

Discharge pressure Discharge pressure in bar (a) and the corresponding condensation temperaturein °C

Oil pressure Oil pressure in bar(a)

Oil diff. pressure Oil differential pressure in bar

Oil filter pressure 1 Oil filter pressure in bar (a)

Oil filter differential pressure1 Oil filter differential pressure in bar

Suction temperature Suction temperature in °C

Discharge temperature Discharge temperature in °C

Oil temperature Oil temperature in °C

External temperature Secondary refrigerant outlet temperature in °C

Secondary refrigerant inlettemp. 1

Secondary refrigerant inlet temperature in °C

PS position 1 Position of the control slide in %

Motor current Motor current in A

Motor speed Motor speed in rpm

Heating agent inlet tempera-ture 1

Cooling medium inlet temperature into the condenser in °C

Heating agent outlet temper-ature 1

Cooling medium outlet temperature from the condenser in °C

Run hours Running hours

Slide to minimum Slide to minimum time in sec, remaining time for slide for reaching the minimumposition

Auto start delay Remaining time for auto start delay in sec.



Name Remark

Auto stop delay Remaining time (auto) for auto stop delay in sec.

Start to start Start to start, remaining time between two starts of the compressor in sec.

Stop to start Stop to start timer, remaining time in sec.

External temperature 1 External temperature in °C

1 optional


Controller


7.4 Input signals and output signals

The following graphic shows the input signals and output signals using the example of a GEA Grasso BluAstrum

fig.13: Input signals and output signals for a GEA Grasso BluAstrum



8 DIMENSIONS, WEIGHTS, FILL QUANTITIES AND CONNEC-TIONS

8.1 Series BluAstrum 500 ... BluAstrum 1800

Hint!

The data is applicable to the following standard conditions:

1. Temperature of the secondary refrigerant +12°C / +6°C

2. Temperature of the refrigerant +30°C / +35°CDeviant data can be the result of other conditions.

fig.14: BluAstrum 500 ... BluAstrum 1800

Characteristics

Code BluAstrum Chiller

5001 8001 9001 1000 15001 18001

A Length mm 4700 5100 5100 5100 6500 6800

B Width mm 1000 1000 1000 1000 1200 1200

C Height mm 2100 2100 2100 2100 2400 2400

EPortCold water IN

DN 80 80 100 100 125 125

FPortCold water OUT

DN 80 80 100 100 125 125

GPortCooling water IN

DN 80 80 100 100 125 125


Dimensions, weights, fill quantities and connections


Characteristics

Code BluAstrum Chiller

5001 8001 9001 1000 15001 18001

HPortCooling water OUT

DN 80 80 100 100 125 125

Connection of blow-offline to safety valve DN 25 25 25 25 25 25

Weight without charg-ing kg 5500 6000 6500 7000 8000 8500

Operating weight kg 5820 6370 6950 7450 8150 8800

1 subject to technical changes

Dimensions, weights, fill quantities and connections Product Information | GEA Grasso BluAstrumChiller with Screw Compressors


8.2 Refrigerant and oil filling quantities

Type Application Refrigerant filling quan-tity (kg) Oil filling quantity (l)

BluAstrum 500

for climate conditions

50 80

BluAstrum 800 57 90

BluAstrum 900 65 90

BluAstrum 1000 78 100



The data refer to 12/7°C // 30/35°C


Dimensions, weights, fill quantities and connections


9 PERFORMANCE CHARACTERISTICS

9.1 Performance characteristics BluAstrum 500 ... BluAstrum 1800

Cold water inlet temperature = 12°CCold water outlet temperature = 6°CQ0: refrigeration capacity

Pe: driving power

Qc: Condenser capacity at cooling water inlet / outlet temperatures = 30/35℃

Type Q0

in kWPe

1

in kWQc

2

in kW

BluAstrum 500 550 110 660

BluAstrum 800 740 153 893

BluAstrum 900 880 172 1052

BluAstrum 1000 1100 217 1317

BluAstrum 1500 1450 266 1716

BluAstrum 1800 1730 323 2053

1 including motor / frequency converter power losses2 including oil cooling capacity

Performance characteristics Product Information | GEA Grasso BluAstrumChiller with Screw Compressors


10 SOUND PRESSURE LEVEL

Measuring-surface sound-pressure levelAt a distance of 1 m from the machine surface (A-close range sound level at oper air conditions on reflectingsurface) for chillers (1 compressor and 1 drive motor).Determining the measured values:

• Without secondary sound insulation.

Caution!

Measuring-surface sound-pressure level strongly depends on the chiller type and especiallyon the type of the drive motor (manufacturer, type, protection type).Because of this the values are guide values, which have to be confirmed by the technicalspecifications of the project.

Measuring-surface sound-pressure level (without housing)

Motor Chiller

at 40°CPe in kW

BluAstrum500

BluAstrum800

BluAstrum900

BluAstrum1000

BluAstrum1500

BluAstrum1800

160 83 83 - - - -

200 - 84 84 84 - -

250 - 86 86 86 - -

315 - - 88 88 89 -

355 - - - 90 91 92

400 - - - - 92 93

500 - - - - - 96

The values in the table are verified by actual measurement. If no values are specified, these are not yet availableor not applicable for the chiller size.

Hint!

Reduce the measuring-surface sound-pressure level (1m) by 4 dB(A) for BluAstrum withsound insulation housing.


Sound pressure level


11 MANUFACTURER INFORMATION

GEA Refrigeration Germany GmbH is a companywithin GEA Refrigeration Technologies, the Refriger-ation Technology Segment of the GEA Group andprovides its customers around the world with high-quality components and services for refrigeration andprocess technology applications.

Locations:

GEA Refrigeration Germany GmbHHolzhauser Str. 16513509 Berlin, GermanyPhone: +49 30 43592-600Fax: +49 30 43592-777Web: www.gearefrigeration.deE-Mail: [email protected]

GEA Refrigeration Germany GmbHWerk HalleBerliner Straße 13006258 Schkopau/ OT Döllnitz, GermanyPhone: +49 345 78 236 - 0Fax: +49 345 78 236 - 14Web: www.gearefrigeration.deE-Mail: [email protected]

Manufacturer information Product Information | GEA Grasso BluAstrumChiller with Screw Compressors



Manufacturer information


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