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CXH0 - Compact twin screw compressors

CXH0 - Compact twin screw compressors
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CXH0 - Compact twin screw compressors

Product catalog summary
Overview: The document details the technical specifications and features of the CXH series compact twin screw compressors by FRASCOLD SpA, emphasizing their innovative design, operational features, and electronic protection systems.
Key Features:
  • Innovative screw profile design with a 5:6 ratio for efficient operation.
  • Optimized electric motor cooling using FDM fluid-dynamic simulation.
  • Easy access to the oil filter with optional operational condition monitoring.
  • High-efficiency PWS electric motor with integrated PTC sensors.
  • Compact dimensions for easy installation and quiet operation due to double interspace screw housing.
  • Specific design available for R134a applications.
  • Heavy-duty bearings with calibrated lubrication.
Capacity Control: The CXH compressors feature a step capacity control device, allowing for 25%-50%-75%-100% capacity levels, with an optional stepless system for continuous control from 25% to 100%.
Electronic Protection: The compressors include integral protection compliant with DIN44081, featuring PTC thermistors in the motor stator connected to a KRIWAN electronic control module. This system monitors maximum winding and discharge temperatures and provides phase and voltage failure protection.
Standard Equipment:
  • Lubricant charge and discharge service valve with check valve.
  • Suction connection with flange and solder sleeve.
  • Electronic oil heater with temperature control.
  • PTC sensors for motor protection and maximum discharge temperature.
  • Oil filter and equalization valve for parallel compressor applications.
  • Connection for liquid injection or economizer fittings.
Accessories: A full range of available accessories is listed on the last page of the document.
Technical Data: The document includes detailed electrical data for various compressor models, specifying maximum input power, operating current, and locked rotor current for different configurations and conditions.
Technical Document Summary:
1. Specifications: Detailed specifications for various compressor models, including motor power, volumetric capacity, weight, oil charge, and connection dimensions.
2. Capacity Control: Standard capacity control with steps at 25%, 50%, 75%, and 100% capacity for efficient power regulation.
3. Performance Data: Performance data for different operating conditions, including tables showing refrigerating capacity and power input across various temperatures.
4. Application and Motor Type: Compatibility with refrigerants like R134a, R404a, R507, and R407c, and motor types categorized by voltage and frequency.
5. Performance Conditions: Detailed performance data and application limits, including the use of oil coolers or liquid injection.
6. Designation and Drawing: Compressor models designated with specific codes indicating range model, power, displacement, motor type, and application type, with referenced drawings for installation and operation.
7. Key Data Extraction: Tables provide critical data on refrigerating capacity and power input at various temperatures, highlighting efficiency and performance under different conditions.
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Catalog excerpts

CXH0 - Compact twin screw compressors-1

COMPACT TWIN SCREW COMPRESSORS CXH TM

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CXH0 - Compact twin screw compressors-2

2 FCAT21-06 Ref: FCAT21-06 Edizione: Marzo 2009 sostituisce: FCAT21-05 Ottobre 2008 Realizzazione: FRASCOLD SpA • FRASCOLD SpA si riserva il diritto di modifi care i dati e le caratteristiche contenute nel presente catalogo, senza obbligo di preavviso. • FRASCOLD SpA reserves the right to change at any time, specifi cations or design without notice and without incurring obligations. • FRASCOLD SpA se réserve le droit de modifi er sans préavis les données et les caractéristiques contenues dans cette notice. • FRASCOLD SpA behält sich das Recht vor Spezifi kationen oder Ausführungen jederzeit ohne...

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CXH0 - Compact twin screw compressors-3

3 FCAT21-06 Caratteristiche salienti • profi lo innovativo delle viti, del tipo "a rotolamento" con rapporto 5:6 • raffreddamento del motore elettrico studiato e ottimizzato mediante l'impiego di software fl uidodinamici FDM • progetto generale che prevede il concetto "lato operatore" • filtro dell'olio facilmente sostituibile e con monitoraggio delle condizioni operative (a richiesta) • lubrifi cazione calibrata delle viti • dispositivo per il controllo della capacità frigorifera di semplice utilizzo, affi dabile ed effi ciente • valvola di non ritorno di concezione innovativa • motore elettrico...

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CXH0 - Compact twin screw compressors-4

4 FCAT21-06 25%-50%-75%-100%. Protezione elettronica I compressori serie CXH vengono forniti completi di protezione integrale, conforme alla norma DIN44081, costituita da una catena di termistori PTC inseriti nello statore del motore elettrico e collegati a un modulo elettronico di controllo KRIWAN. Il dispositivo di protezione svolge le seguenti funzioni: • controllo della massima temperatura del motore elettrico (+120°C) mediante sei termistori di tipo PTC inseriti negli avvolgimenti dello statore • controllo della massima temperatura di compressione (+120°C) tramite un sensore di tipo PTC...

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CXH0 - Compact twin screw compressors-5

5 FCAT21-06 CXH Vista in trasparenza Transparent view Vue en transparence Transparente Ansicht

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20 FCAT21-06 temperatura di condensazione - condensing temperature température de condensation Verfl üssigungstemperatur temperatura di condensazione - condensing temperature température de condensation Verfl üssigungstemperatur temperatura di condensazione - condensing temperature température de condensation Verfl üssigungstemperatur temperatura di condensazione - condensing temperature température de condensation Verfl üssigungstemperatur senza economizzatore - without economizer sans economiseur - ohne Economizer R407c R134a Limiti di impiego Application limits Champs d'application Anwendungsgrenzen...

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CXH0 - Compact twin screw compressors-21

21 FCAT21-06 Performance data shown from page 6 application limits are based on the following conditions: without economizer - suction gas overheating 10K - without liquid subcooling with economizer - suction gas overheating 10K - liquid subcooling = tm +10K R134a - compressors with motor A for utilisation with evaporation between -15/+12.5°C and condensation 65°C. Compressors with motor B for utilisation with evaporation between -15/+20°C and condensation 70°C R404a - The use of this refrigerant requires, for specific operating conditions, the installation of an additional oil separator on the...

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CXH0 - Compact twin screw compressors-22

22 FCAT21-06 Dimensioni di ingombro Dimensional drawing Plans cotés Mass Zeichnungen Disegno / Drawing / Dessin / Zeichnung 1 Standard senza rubinetto di aspirazione Standard without suction shut off valve Standard sans robinet de aspiration Standard ohne Saugabsperrventil Con rubinetto opzionale di aspirazione With optional suction shut off valve Avec robinet facultatif de aspiration Mit zusätzlichem Saugabsperrventil

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CXH0 - Compact twin screw compressors-23

23 FCAT21-06 Dimensioni di ingombro Dimensional drawing Plans cotés Mass Zeichnungen Disegno / Drawing / Dessin / Zeichnung 2 500 450 285 317 653 668 20 197 213 652 143 93 Ø 17 767 50 1506 764 Standard senza rubinetto di aspirazione Standard without suction shut off valve Standard sans robinet de aspiration Standard ohne Saugabsperrventil Con rubinetto opzionale di aspirazione With optional suction shut off valve Avec robinet facultatif de aspiration Mit zusätzlichem Saugabsperrventil

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CXH0 - Compact twin screw compressors-24

24 FCAT21-06 Dimensioni di ingombro Dimensional drawing Plans cotés Mass Zeichnungen Disegno / Drawing / Dessin / Zeichnung 3a Standard senza rubinetto di aspirazione Standard without suction shut off valve Standard sans robinet de aspiration Standard ohne Saugabsperrventil Con rubinetto opzionale di aspirazione With optional suction shut off valve Avec robinet facultatif de aspiration Mit zusätzlichem Saugabsperrventil Disegno / Drawing / Dessin / Zeichnung 3b

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CXH0 - Compact twin screw compressors-25

25 FCAT21-06 1 attacco di alta pressione high pressure connection connexion haute pression Druckseiteanschluß " NPT 2 attacco di bassa pressione low pressure connection connexion basse pression Saugseiteanschluß " NPT 3 attacco di bassa pressione low pressure connection connexion basse pression Saugseiteanschluß " NPT 4 attacco di bassa pressione low pressure connection connexion basse pression Saugseiteanschluß ¼" SAE x ¼" SAE 5 attacco di alta pressione high pressure connection connexion haute pression Druckseiteanschluß ¼" SAE x ¼" SAE 6 tappo carico olio oil charge plug bouchon charge d'huile...

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CXH0 - Compact twin screw compressors-26

26 FCAT21-06 Controllo di capacità Capacity control Régulation de puissance Leistungsregelung LP SV HP OL V3 75% V2 50% V1 25% OL LP SV HP OL V2 decrease V1 increase OL Y V1 V3 time capacity Y set off on increase constant decrease Ä Y HP gas mandata discharge gas gas de refoulement Druckgas LP gas aspirazione suction gas gas aspiré Sauggas OL olio oil huile Öl SV valvola di parzializzazione slide valve tiroir Schieber V1 valvola elettromagnetica solenoid valve electrovanne Magnetventil V2 valvola elettromagnetica solenoid valve electrovanne Magnetventil V3 valvola elettromagnetica solenoid valve...

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