Bitzer 2N-7.2Y Series

Betriebsanleitung
Operating Instructions
Instruction de service
Halbhermetische
Hubkolbenverdichter
• 2HL-1.2(Y) .. 2N-7.2(Y)
• 4VC-6.2 .. 4NC-20.2(Y)
• 4Z-5.2(Y) .. 8FC-70.2(Y)
• 44J-26.2(Y) .. 66F-100.2(Y)
Inhalt Seite
1 Sicherheit 1
2 Anwendungsbereiche 3
3 Montage 4
4 Elektrischer Anschluss 12
5 In Betrieb nehmen 16
6 Betrieb / Wartung 22
7 Außer Betrieb nehmen 23
1 Sicherheit
Diese Kältemittel-Verdichter sind zum
Einbau in Maschinen entsprechend
der EU-Maschinenrichtlinie
98/37/EG vorgesehen. Sie dürfen nur
in Betrieb genommen werden, wenn
sie gemäß vorliegender Anleitung in
diese Maschinen eingebaut worden
sind und als Ganzes mit den entspre-
chenden gesetzlichen Vorschriften
übereinstimmen (anzuwendende
Normen: siehe Herstellererklärung).*
Autorisiertes Fachpersonal
Sämtliche Arbeiten an Verdichtern
und Kälteanlagen dürfen nur von
Fachpersonal ausgeführt werden,
das in allen Arbeiten ausgebildet
und unterwiesen wurde. Für die
Qualifikation und Sachkunde des
Fachpersonals gelten die jeweils gülti-
gen Richtlinien.
Semi-hermetic Recipro-
cating Compressors
• 2HL-1.2(Y) .. 2N-7.2(Y)
• 4VC-6.2 .. 4NC-20.2(Y)
• 4Z-5.2(Y) .. 8FC-70.2(Y)
• 44J-26.2(Y) .. 66F-100.2(Y)
Content Page
1 Safety 1
2 Application ranges 3
3 Mounting 4
4 Electrical connection 12
5 Commissioning 16
6 Operation / Maintenance 22
7 De-commissioning 23
1 Safety
These refrigeration compressors are
intended for installation in machines
according to the EC Machines
Directive 98/37/EC. They may be put
to service only, if they have been in-
stalled in these machines according
to the existing instruction and as a
whole agree with the corresponding
provisions of legislation (standards to
apply: refer to Manufacturers Declara-
tion).*
Authorized staff
All work on compressor and refrigera-
tion systems shall be carried out only
by refrigeration personnel which has
been trained and instructed in all
work. The qualification and expert
knowledge of the refrigeration person-
nel corresponds to the respectively
valid guidelines.
Compresseurs hermétiques
accessibles à pistons
• 2HL-1.2(Y) .. 2N-7.2(Y)
• 4VC-6.2 .. 4NC-20.2(Y)
• 4Z-5.2(Y) .. 8FC-70.2(Y)
• 44J-26.2(Y) .. 66F-100.2(Y)
Sommaire Page
1 Sécurité 1
2 Champs d’application 3
3 Montage 4
4 Raccordement électrique 12
5 Mise en service 16
6 Service / Maintenance 22
5 Mise hors service 23
1 Sécurité
Ces compresseurs frigorifiques sont pré-
vus pour être incorporés dans des machi-
nes conformément à la Directive CE
Machines 98/37/CE. Leur mise en servi-
ce est uniquement autorisée s’ils ont été
incorporés dans des machines conformé-
ment à la présente instruction et si ces
machines répondent dans leur totalité
aux réglementations légales en vigueur
(les normes qu’il faut utiliser: voir la
Déclaration du Constructeur).*
Personnel spécialisé autorisé
Seul un personnel spécialisé ayant été
formé et initié est autorisé à réaliser
l'ensemble des travaux sur les compres-
seurs et installations frigorifiques. Les
directives en vigueur à cet effet sont vala-
bles pour la qualification et la compéten-
ce du personnel spécialisé.
* Hinweis gilt für Länder der EU * Information is valid for countries of the EC * Indication valable pour les pays de la CE
KB-110-6

Bitzer 2N-7.2Y Series Specifications

General

Model	2N-7.2Y
Number of Cylinders	2
Protection class	IP54
Type	Semi-hermetic
Refrigerant	R134a, R404A, R507A
Cooling Capacity	Depends on refrigerant and operating conditions
Oil charge	1.0 dm³
Motor voltage	220-240V / 380-415V
Voltage	220-240V / 380-415V
Frequency	50 Hz

Summary

Safety and Authorized Personnel

Safety Precautions

Information on how to avoid hazards and general safety instructions.

Authorized Personnel Qualifications

Details on who is qualified to perform work on compressors and refrigeration systems.

Residual Hazards and Safety Instructions

Understanding Residual Hazards

Information about unavoidable residual hazards from the compressors.

Adhering to Safety References

Instructions intended to prevent hazards and must be stringently observed.

Safety Warnings and Application Ranges

Equipment Damage Warnings

Personal Hazard Warnings

Instructions to prevent possible severe hazard to persons.

Immediate Danger Warnings

Instructions to prevent an immediate risk of severe hazard to persons.

Start Unloading and Capacity Control Systems

Start Unloading (SU) System

Capacity Control (CR) System

Electrical Connection Guidelines

General Electrical Safety Compliance

Compliance with EC directives and safety standards for electrical installations.

Terminal Box and Wiring Precautions

Motor Starting Methods and Wiring

Part-Winding Start Motor Details

Star-Delta Motor (Option) Operation

Motor Protection Devices and Sensors

Motor Protection Device Types

Description of SE-B1, SE-B2, and INT389 motor protection devices.

Discharge Gas Temperature Sensor Installation

Compressor Monitoring and Control Devices

Differential Oil Pressure Switch Function

Pressure Limiters (HP & LP) Purpose

Crankcase Heater Function

CIC System and Commissioning Safety

Commissioning Safety Precautions

Instructions for pressure testing, leak testing, and avoiding hazards during commissioning.

Commissioning: Pressure, Tightness, and Evacuation

Strength Pressure Test Procedure

Procedure for testing the pressure resistance of the refrigerant circuit.

Tightness Test Procedure

Procedure for checking the tightness of the refrigerant circuit.

System Evacuation Procedure

Steps for evacuating the system using a vacuum pump.

Refrigerant Charging and Pre-Start Checks

Refrigerant Charging Procedure

Guidelines for charging permitted refrigerants, including oil level checks.

Pre-Start Oil Level Checks

Start-up Procedure and Oil Checks

Lubrication and Oil Check

Checking lubrication and oil level immediately after starting.

Start-up Sequence Checks

Special Recommendations for Safe Operation

Expansion Valve and Superheat Guidelines

Advice on expansion valve operation, sensor placement, and superheat.

Stable Operation and Refrigerant Management

Ensuring stable operation, bubble-free refrigerant, and avoiding refrigerant migration.

Regular Maintenance Checks

Routine Inspection Points

Oil Change and Filter Cleaning

Oil Change Intervals

Compressor De-commissioning and Disposal

Standstill Procedures

Compressor Dismantling and Safety

Steps for closing valves, pumping off refrigerant, and safe handling during dismantling.

Proper Compressor Disposal