Compressors for bus air-conditioning 4UFC..6NFC (IP units) KP-545-4
Compressors for bus air-conditioning 4UFC..6NFC (IP units) KP-545-4
- Models: 4UFC(Y) to 4NFC(Y) and 6UFC(Y) to 6NFC(Y).
- Speed Range: 500 to 3500 RPM.
- Optimized for refrigerant R134a, with options for other refrigerants upon request.
- Compact design with low weight and high efficiency.
- Dimensions: Slimmest in class with widths of 12.09 inches or 14.45 inches.
- Patented shaft seal with secondary oil barrier to minimize leakages.
- Dynamic mass balance for smooth operation with low friction losses.
- Exchangeable and wear-resistant cylinder liners.
- Integrated pressure relief valve and optional capacity control.
- Four compressors with different capacities but identical external dimensions.
- Belt drive with an electro-magnetic clutch, adaptable to other drive types.
- High reliability and recognized BITZER quality.
- Performance is measured at a return gas temperature of 65°F without liquid subcooling, at a compressor speed of 1750 RPM.
- Cooling capacity varies with saturated suction and discharge temperatures.
- Maximum speed should not exceed 3500 RPM.
- Additional cooling or limited suction superheat may be required under certain conditions.
- Capacity control, electro-magnetic clutch, and crankcase heater.
- Compressors are designed for easy access and maintenance.
- Exchangeable position of the suction shut-off valve for optimal mounting in tight spaces.
This document provides detailed specifications for standard shut-off valves, including various connection positions and dimensions. The document lists metric screw sizes such as M8, M10, and M22, and provides measurements for different components.
The document outlines the positions for high pressure (HP) and low pressure (LP) connections, discharge gas temperature sensors, oil fill plugs, crankcase heaters, oil drains, magnetic screws, oil dryers, oil pressure connections, and sight glasses. It notes that other valve positions are available upon request.
Details are provided for the fixation of magnetic clutches, including shaft end specifications and the use of Woodruff keys. Specific models such as LINNIG LA16 and LA26 are mentioned, with associated dimensions and screw sizes.
The document includes contact information for Bitzer Kühlmaschinenbau GmbH, located in Sindelfingen, Germany, along with their phone and fax numbers, and website.
The document is subject to change, and modifications are reserved.
Catalog excerpts
Prospekt KP-545-4 12.01.2006 10:45 Uhr Seite 1 Compressors for bus air-conditioning Compresseurs pour climatisation de bus Compresores para sistemas de aire acondicionado para autobuses 4UFC(Y) .. 6NFC(Y) 4UFC(Y) .. 6NFC(Y) 4UFC(Y) .. 6NFC(Y) KP-545-4 IP Units
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Prospekt KP-545-4 12.01.2006 10:45 Uhr Seite 2 Los compresores 4UFC(Y) hasta 4NFC(Y) y 6UFC(Y) hasta 6NFC(Y), con rango ampliado de velocidad de giro, se han desarrollado especialmente para su uso en vehículos. The new compressor series 4UFC(Y) to 4NFC(Y) and 6UFC(Y) to 6NFC(Y) have been developed especially for the operation in an extended speed range. Les compresseurs 4UFC(Y) à 4NFC(Y) et 6UFC(Y) à 6NFC(Y) ont été spécialement développés pour fonctionner sur les véhicules avec un régime de vitesse de rotation étendu. With the new Aluminium compact compressors BITZER presents technical progress...
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Prospekt KP-545-4 12.01.2006 10:45 Uhr Seite 3 ❏ Combined roller and sleeve bearings of the excentric shaft ● without axial clearance – independent of housing temperature and operating conditions ● designed for extreme loadings at high speed ❏ Lubrication by reversible oil pump ❏ Minimum oil carry over rate due to internal oil separator ❏ Oil drier as option ❏ Dynamic working valves ● flapper valves made of impact resistant spring steel for highest reliability – matching the entire speed range ● high efficiencies through optimized geometry and dynamic characteristics of the working valves ❏ Integrated...
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Performance data relating to 65°F return gas temperature; without liquid subcooling, compressor se referant, sans sous-refroidissement de liquide, vitesse de compresseur 1750 min-' referidos a una temperatura del gas aspira- Velocidad de giro del compresor 1750 min-1 Conversion actor Facteur de conversion Factor de conversion Speed / Vitesse /Velocidad [RPM] application with vehicle engine at variable speed. Do not exceed maximum speed (3500 RPM) even at high idle speed (no-load operation) of vehicle engine. Les compresseurs sont optimises pour 'utilisation avec un moteur auto-mobile a vitesse...
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Technical data Caracteristiques techniques Datos tecnicos Volume balaye Pipe connections Discharge line Suction line Counduite de refoul. Counduite d'aspir. CIR cubic inch per revolution CFH cubic feet per hour O The compressors are otimised for the appli- cation with vehicle engine at variable speed Do not exceed maximum speed (3500 rpm) even at high idle speed (no-load operation) © Other clutches upon request Application limits Compressor speed CIR pouce cubique par revolution CFH pied cubique par heure © Les compresseurs sont optimises pour I'utili- sation avec un moteur auto-mobile a Vitesse...
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Dimensional drawings Croquis cotes Shut-off valves standard position Dibujos acotados Vannes d'arret arrangement standard Valvulas de cierre posicion estandar Shut-off valves standard position Vannes d'arret arrangement standard Valvulas de cierre posicion estandar M8, M10 and M22: Metric screws / vis metriques / tornilos metricos Connection positions 1 High pressure connection (HP) 2 Discharge gas temp, sensor (HP) 5 Crankcase heater (option) 6 Oil drain / magnetic screw (oil filter) Other valve positions possible upon 1 Raccord de haute pression (HP) 3 Raccord de basse pression (LP) 4 Bouchon...
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Prospekt KP-545-4 12.01.2006 10:45 Uhr Seite 7 Fixing for magnetic clutch Fixation pour accouplement magnétique Fijación para acoplamiento electromagnético Shaft end Bout de l'arbre Extremo de eje Woodruff key / Clavette disque Chaveta Woodruff 5x9 DIN 6888 4.37 2.09 3.54 5.38 1.57 M12 0.20 1.97 3.94 M10 (4x) 5.12 6.69 M8 (4x) LINNIG LA16: 4UFC(Y) .. 6TFC(Y) LINNIG LA26: 6PFC(Y) .. 6NFC(Y) 0.64 0.64 0.51 6.73 7.68 0.51 8.43* 8.27 7.99* 0.75 8.70 0.75 7.48 7.68 M8, M10 and M22: Metric screws / vis métriques / tornilos métricos * Effective diameter / Diamètre primitif / Diámetro efectivo KP-545-4...
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12.01.2006 10:45 Uhr Seite 8 Bitzer Kühlmaschinenbau GmbH Eschenbrünnlestraße 15 71065 Sindelfingen, Germany fon +49 (0) 70 31 932-0 fax +49 (0) 70 31 932-146 & -147 www.bitzer.de • [email protected] Subject to change / Toutes modifications résérvées / Modificaciones reservadas 12.05 Prospekt KP-545-4
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