Table of Contents
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INSTRUCTION MANUAL
OIL-FLOODED
ROTARY SCREW AIR COMPRESSOR
Air-Cooled Type
OSP-55VAN
OSP-75VAN
Prior to operation of this air compressor,
ensure that all operators read and
understand this INSTRUCTION MANUAL
completely, thereby operating it safely
and properly.
Place the INSTRUCTION MANUAL near
the air compressor to make it available
at any time, and refer to it as the need
arises.
NEXT T
NEX
● T his INSTRUCTION MANUAL explains in detail
the important items that require attention;
observed as the following:
● A lways observe notations of WARNING, CAUTION
and IMPORTANT, as they indicate considerable
risks to safety.
GRAPHIC DESCRIPTIONS:
： T his is a warning. If handled improp-
WARNING
erly, death or severe injury could
result.
CAUTION
： T his is a caution. If handled improper-
ly, injury and/or physical damage
could result.
： T his graphic is for items that need
IMPORTANT
attention, other than WARNING and
CAUTION.
： T his graphic is a page number reference.
series
series
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Table of Contents
Related Manuals for Hitachi HISCREW V PLUS OSP-75VAN
Summarization of Contents
Characteristics of this Manual
Model Number Nomenclature
Explains the structure and meaning of the air compressor model numbers.
International System of Units (SI)
Details the use of SI units and conversion formulas within the manual.
TO USE IN SAFETY
1. TO USE IN SAFETY
General safety instructions, warnings, and precautions for operating the air compressor.
Caution for the DCBL motors
Specific safety warnings and precautions related to DCBL motors and their magnetic properties.
PARTS DESCRIPTION AND THEIR FUNCTIONS
2.1 Appearance
Identifies and describes the external parts of the air compressor.
2.2 Main Component Units and their Functions
Explains the function of major internal components of the air compressor.
HOW TO OPERATE
3.1 Air Compressor Instrumentation
Details the buttons, lights, and indicators on the instrument panel.
3.2 How to Use the Digital Monitor and its Controls
Guides on navigating and interpreting the digital monitor display and its data.
3.3 Initial Start-Up
Step-by-step instructions for the initial startup procedure of the air compressor.
3.4 How to Set Control Functions
Instructions for adjusting various control functions like pressure and capacity settings.
3.5 Daily Operation
Outlines the procedures for daily checks and operation of the air compressor.
DAILY CHECK
4.1 Daily Operation Management
Instructions for recording daily operation status and managing maintenance logs.
4.2 Control of Condensate
Explains how to check and drain condensate that may form under certain operating conditions.
4.3 Lubricant Management
Details procedures for checking, replenishing, and managing the compressor's lubricant.
TROUBLESHOOTING
5.1 When ALARM or SHUTDOWN is Displayed
Procedures for responding to alarm and shutdown indications on the instrument panel.
5.2 SHUTDOWN/ALARM Indications on the Instrument Panel
A table detailing causes, actions, and resets for various alarm and shutdown codes.
5.3 A List of SHUTDOWNS Not Displayed on Instrument Panel
Identifies symptoms, causes, and solutions for shutdowns not indicated on the instrument panel.
SYSTEM OF EACH COMPONENT
6.1 Compressed Air and Oil Subsystems
Describes the interconnected systems for compressed air and oil circulation within the compressor.
6.2 Capacity Control System
Explains the different modes of capacity control (V, I, P) and their operation.
INSTRUCTIONS FOR INSTALLATION
7.1 Verification of Components
Lists components to verify upon receiving the compressor unit.
7.2 Instructions When Conveying
Guidelines for safely transporting and moving the compressor unit.
7.3 Instructions When Installing
Safety warnings and general guidance for the installation process of the compressor.
7.4 Instructions When Piping
Details on proper piping connections for air receiver, discharge, and parallel operations.
7.5 Compressor Room Ventilation
Requirements and recommendations for adequate ventilation in the compressor installation room.
7.6 Instructions on Electrical Wiring
Comprehensive guide for electrical wiring, including power sources, circuit breakers, and grounding.
PERIODIC MAINTENANCE
8.1 Periodic Maintenance for Compressor
Introduces typical maintenance standards and selection criteria based on operating hours.
8.2 Typical Maintenance Standard (A) of Air Compressor
Details maintenance tasks for less than 6,000 annual operating hours.
8.3 Typical Maintenance Standard (B) of Air Compressor
Details maintenance tasks for less than 3,000 annual operating hours.
8.4 Performance Check of Relief Valve
Procedures for checking the operational performance of the relief valve.
8.5 Performance Check of Capacity Control System
Explains how to verify the correct functioning of the capacity control system.
8.6 Replacement of Oil Filter Element
Step-by-step guide for replacing the oil filter element.
8.9 Inspection and Replacement of Minimum Pressure/Check Valve
Instructions for inspecting and replacing the minimum pressure/check valve.
8.8 Cleaning of Cooler
Procedures for cleaning the cooler to ensure efficient heat exchange.
8.10 Replacement of Oil Separator Element
Detailed instructions for removing and replacing the oil separator element.
8.11 Greasing of Motor
Guidelines for greasing the motor bearings on the load side.
8.12 Cleaning of DCBL Motor Cooling Fins
How to clean the cooling fins of the DCBL motor to maintain performance.
8.13 Servicing of DCBL Controller and Fan Inverter
General servicing and inspection procedures for the DCBL controller and fan inverter.
8.14 Cleaning of DCBL Controller and Fan Inverter Cooling Fins
Instructions for cleaning cooling fins on the DCBL controller and fan inverter.
8.15 Service Life of DCBL Controller and Fan Inverter Cooling Fins
Information on the service life of capacitors and cooling fins for controllers/inverters.
WHEN IT IS NOT USED FOR LONG TIME
9. WHEN IT IS NOT USED FOR LONG TIME
Procedures for storing and preparing the compressor for long-term inactivity.
LIMITED WARRANTY AND AFTER-SALES SERVICE
Limited Warranty
Details the warranty period and limitations for Hitachi products.
After-Sales Service
Provides information on how to obtain after-sales service and required details.
PARTS LIST
Compressor Air End
Illustrated list of parts for the compressor air end assembly.
Motor
Illustrated list of parts related to the compressor motor.
Cooler and Cooling Fan
Parts breakdown for the cooler and cooling fan components.
Instrumental Panel
Lists the various parts of the instrument panel.
Suction Throttle Valve
Illustrated parts list for the suction throttle valve assembly.
Minimum Pressure / Check Valve
Exploded view and parts list for the minimum pressure/check valve.
Oil Separator
Illustrated parts for the oil separator tank and related components.
Control Piping
Parts list for the control piping system of the compressor.
Oil Piping
Lists parts associated with the oil piping system.
Discharge Air Piping
Illustrated parts for the discharge air piping.
Air Intake Duct & Air Exhaust Duct
Lists components for the air intake and exhaust duct systems.
Enclosure
Parts list for the various enclosure panels and covers.
Starter Panel
Lists components and parts of the starter panel assembly.
OPERATION RECORD LOGBOOK
12. OPERATION RECORD LOGBOOK
A template for recording daily operation data, maintenance, and remarks.
STANDARD SPECIFICATION
Compressor Specification
Technical specifications for the OSP-55VAN and OSP-75VAN compressor models.
DCBL Controller Specification
Specifications for the DCBL controller and associated motors.
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