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BOCK FK 4
Assembly instructions
09716-03.2025-Gb
Translation of the original instructions
FK40/390 N
FK40/390 K
FK40/470 N
FK40/470 K
FK40/560 N
FK40/560 K
FK40/655 N
FK40/655 K
FK40/755 K
FKX40/390 N
FKX40/390 K
FKX40/470 N
FKX40/470 K
FKX40/560 N
FKX40/560 K
FKX40/655 N
FKX40/655 K
FKX40/755 K
BOCK
®
0
FK40/390 K1
FK40/470 K1
FK40/560 K1
FK40/655 K1
FK40/755 K1
FKX40/390 K1
FKX40/470 K1
FKX40/560 K1
FKX40/655 K1
FKX40/755 K1
FK40/390 TK
FK40/470 TK
FK40/560 TK
FK40/655 TK
FKX40/390 TK
FKX40/470 TK
FKX40/560 TK
FKX40/655 TK
colour the world
of tomorrow

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Table of Contents
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Summarization of Contents

About these instructions
Manufacturer Information
Company details and address.
Contact Details
Contact phone, fax, and email addresses.
Safety
Safety Instruction Identification
Defines safety symbols (DANGER, WARNING, CAUTION, INFO).
Personnel Qualifications
Specifies required qualifications for compressor work.
Operational Fault Dangers
Warns about dangers from extreme running noise or capacity loss.
General Safety Instructions
General precautions for handling pressurized machines and refrigerants.
Intended Use and Prohibitions
Defines the compressor's intended application and prohibited uses.
Product description
Brief Description of Designs
Describes different designs (N, K, TK) and their applications.
Name Plate Explanation
Explains information found on the compressor's nameplate.
Type Key Interpretation
Explains how to interpret the compressor's type designation.
Areas of application
Compatible Refrigerants
Lists approved refrigerants (HFC/HFKW).
Factory Oil Specification
Specifies factory-filled oil and ester oil marking.
Operating Limits
Details maximum temperatures, switching frequency, and running time.
Compressor assembly
Setting Up and Handling
Instructions for handling, storage, and mounting the compressor.
Maximum Permissible Inclination
Specifies permissible inclination angles for operation.
V-Belt Drive Considerations
Warnings on belt drive design, tensioning, and load.
Main Bearing Load Limits
Details force limits for the belt drive to protect the main bearing.
Electromagnetic Clutch Assembly
Steps for mounting and connecting an electromagnetic clutch.
Pipe Connections
Guidance on pipe connection diameters and soldering methods.
Pipes and System Components
Requirements for pipe cleanliness, layout, and pressure loss.
Shut-Off Valve Operation
Procedures for opening and closing shut-off valves.
Service Connection Operation
Explains how to operate lockable service connections.
Suction Pipe Filter
Recommendation for using and renewing suction pipe filters.
K1 Special Housing Characteristics
Details on M10 threads for mounting and bracing the compressor.
Commissioning
Preparations for Start-up
Notes on pressostats, factory testing, and transport damage.
Pressure Strength Test
Information on factory testing and system pressure tests.
Leak Test Procedure
Safety warnings and procedure for leak testing with nitrogen.
Evacuation Process
Steps for evacuating the system and compressor.
Refrigerant Charge
Safety advice and procedure for charging refrigerant.
Oil Level Check
Guidance on checking oil level, especially after replacement.
Shaft Seal Information
Information on normal oil leakage and shaft seal maintenance.
Avoiding Liquid Shocks
Points to observe to prevent liquid slugging and compressor damage.
Maintenance
Maintenance Preparation
Safety precautions before starting maintenance work.
Routine Maintenance Tasks
Recommendations for oil changes and reservoir emptying.
Shaft Seal Oil Reservoir Management
Procedure for emptying the oil reservoir and reasons for shaft seal failure.
Recommended Spare Parts & Accessories
Lists maintenance sets and recommends original parts.
Integrated Decompression Valve
Notes that the valve is maintenance-free but may need checking.
Lubricants and Oils Guide
Recommends Bock lubricants and provides a table for refrigerants.
Compressor Decommissioning
Steps for safely decommissioning the compressor.
Accessories
Capacity Regulation System
Details on capacity regulation, operational advice, and accessories.
Thermal Protection Thermostat
Technical data for the thermal protection thermostat.

Table of Contents