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Semi-hermetic Reciprocating Compressors 2-stage (60Hz, IP-Units) KP-155-3

Semi-hermetic Reciprocating Compressors 2-stage (60Hz, IP-Units) KP-155-3
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Semi-hermetic Reciprocating Compressors 2-stage (60Hz, IP-Units) KP-155-3

Product catalog summary
Overview: This document provides an in-depth analysis of BITZER's 2-stage semi-hermetic reciprocating compressors, specifically designed for low-temperature applications. These compressors belong to the .2-Generation, which is known for enhanced performance and efficiency, especially when using alternative refrigerants such as HCFC R22, HFC R404A, and R507A.
Key Specifications:
  • Power range: 4 to 44 kW.
  • Engineered for high efficiency and robust performance.
  • Optimized for low-temperature operations with specialized gas ports and working valves.
  • Compatible with chlorine-free HFC refrigerants and HCFCs.
Design Features:
  • Incorporates short gas canals and large suction connections to minimize heat exchange.
  • Features a solid valve plate design with impact-resistant spring steel reeds.
  • Compact dimensions requiring minimal space.
  • Ensures quiet operation with 4 and 6-cylinder designs for optimized mass balance.
Performance and Efficiency:
  • Delivers high refrigerating capacity with minimal energy consumption.
  • Equipped with wear-resistant drive gear and surface-hardened components.
  • Utilizes pressure oil lubrication via a reversible gear pump.
  • Includes a large volume built-in motor, gas-cooled for maximum efficiency.
Additional Features:
  • Offers electronic motor protection with thermal monitoring and optional discharge gas protection.
  • Integrated differential pressure relief valve.
  • Provides liquid injection for intermediate cooling, available with mechanical or electronic systems.
Accessories and Options:
  • Includes mounted liquid subcooler and discharge gas temperature protection.
  • Features a motor protection device with additional functions (INT389).
  • Comes with a crankcase heater and oil pressure switch.
Application Limits: Performance data are based on a 65°F return gas temperature at 60 Hz. The document outlines application limits for saturated suction and condensing temperatures.
Type Designation Explanation: The document provides a detailed explanation of the type designation, which includes the construction type, number of cylinders, motor size, and other specifications.
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Catalog excerpts

Semi-hermetic Reciprocating Compressors 2-stage (60Hz, IP-Units) KP-155-3-2

2-stage Semi-hermetic Reciprocating Compressors 4 to 44 kW .2 Generation Compresseurs à piston 2 étages hermétiques accessibles de 4 à 44 kW, Génération .2 Compresores a pistón semi-herméticos de 2 fases de 4 a 44 kW, Generación .2 BITZER sets standards in technology and performance with the 2-stage compressors of the .2-Generation for extended low temperature applications. Avec ces compresseurs 2-ètages de la génération .2 BITZER oriente les choix technologiques pour les applications basse température. Con los compresores de 2 fases de la Generación .2, BITZER marca las pautas en técnica y potencia...

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Semi-hermetic Reciprocating Compressors 2-stage (60Hz, IP-Units) KP-155-3-3

❏ High refrigerating capacity and minimal energy requirements q Highly efficient working valves q Minimal dead space q Efficient, large volume motor ❏ Wear resistant drive gear q Surface hardened eccentrics and crank shafts q Sealed main bearing and generously sized oil pump q Patented oil return system to ensure extremely low oil carry over q Low friction bearings and aluminium pistons q Hard chrome plated piston rings q Special wrist pin bearings ❏ Pressure oil lubrication q by means of reversible gear pump ❏ Large volume built-in motor q gas cooled q with optimized rotor and stator sections...

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Semi-hermetic Reciprocating Compressors 2-stage (60Hz, IP-Units) KP-155-3-4

Application limits Limites d'application R404A s R507A Límites de aplicación R22 140 140 SCT [°F] SCT [°F] 1 120 120 100 100 80 80 RGT = 65°F RGT = 65°F 60 40 -100 SST RGT SCT 1 60 -80 -60 -40 Saturated suction temperature (°F) Return gas temperature (°F) Saturated condensing temperature (°F) Partly additional limits see BITZER Software. SST [°F] SST RGT SCT 1 0 40 -60 Température d'évaporation (°F) Température de gaz aspiré (°F) Température de condensation (°F) Partiellement restrictions additionelles voir BITZER Software. -50 -40 SST RGT SCT 1 -30 -20 SST [°F] 0 Temperatura de evaporación (°F)...

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Semi-hermetic Reciprocating Compressors 2-stage (60Hz, IP-Units) KP-155-3-5

2-stage system with liquid subcooler – interstage cooling by mechanical TX valve 13 Circuit 2 étages avec sousrefroidisseur de liquide – refroidissement intermédiaire avec détendeur thermostatique 12 11 Sistema de 2 fases con subenfriador de líquido – refrigeración intermedia con válvula mecánica TX 9 10 TC 8 14 3 2 1 5 7* 6 * Position de montage verticale 2-stage system with liquid subcooler – interstage cooling by electronic ® system 13 * Posición de montaje vertical Circuit 2 étages avec sousrefroidisseur de liquide – refroidissement intermédiaire ® avec système * Vertical mounting position...

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Semi-hermetic Reciprocating Compressors 2-stage (60Hz, IP-Units) KP-155-3-11

Dimensional drawings Croquis cotés Dibujos acotados S66J-32.2(Y) .. S66F-60.2(Y) 16 M20x1,5 SL ~20.47 9.65 DL ~10.35 8 3/8"-18 NPTF 5 1/4"-18 NPTF SL 57.91 ~3.07 8.74 14 (MP) 1/8"-27 NPTF 4c 1/8"-27 NPTF 17 HP LP ~25.43 ND MP MP 3.15 0.31 1.38 ~20.59 18 0.47 3.54 12.01 18.31 15.00 16.54 0.51 ~5.04 18.50 6.73 52.83 22.13 ~64.02 Connection positions 1 High pressure connection (HP) 2 Discharge gas temperature sensor (HP) 3 Low pressure connection (LP) 4 system: spray nozzle (operation without liquid subcooler) 4a sensor (HP) 4b sensor (MP / operation with liquid subcooler) 5 Oil fill plug 6 Oil...

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Semi-hermetic Reciprocating Compressors 2-stage (60Hz, IP-Units) KP-155-3-12

Technical data Compressor type Caractéristiques techniques Displacement with 1750 RPM LP 1 Number of cylinders Oil charge Weight HP Pipe connections SL DL Discharge line Suction line inch mm inch Motor connection Electrical Data Rated load Max. Locked Amps RLA power con- rotor Amps. sumption LRA mm 3 Nombre de cylindres Compresseur type Volume balayé à 1750 min-1 1 Tipo de compresor Volumen desplazado 1750 min-1 1 LP Datos técnicos Charge d'huile Poids Caractéristiques électriques Raccords Raccordement Courant Puissance Courant de SL DL de service de moteur absorbée démarrage Conduite Conduite...

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