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Gardner Denver AirSmart VS20A User Manual

Gardner Denver AirSmart VS20A
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13-18-604
Version: 10
April 6, 2010
VARIABLE SPEED
SINGLE STAGE
STATIONARY BASE-MOUNTED
COMPRESSOR
AIRSMART CONTROLLER
VS20A
20kW
60HZ
OPERATING AND
SERVICE MANUAL

Table of Contents

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Gardner Denver AirSmart VS20A Specifications

General IconGeneral
TypeRotary Screw
Motor Power20 HP
Drive TypeDirect Drive
ControlAirSmart Controller
Max Pressure125 psi
Voltage208-230/460V
Dimensions48 inches

Summary

Ordering Repair Parts and Remanufactured Airends

Mandatory Label Information and Prohibitions

Danger Hazard Identification

Explains DANGER symbols and their meaning for high-risk hazards.

Warning Hazard Identification

Caution Hazard Identification

Explains CAUTION symbols and their meaning for low-risk hazards.

Prohibited Actions and Mandatory Requirements

General Safety Precautions

Danger Safety Precautions

Details critical safety measures to prevent severe injury or death.

Warning Safety Precautions

Outlines precautions to prevent equipment damage and serious injury.

General Information

Compression Principle

Explains the helical rotor compression process and its stages.

Air Flow in Compressor System

Details the path of air from intake to discharge.

Lubrication, Cooling, and Sealing System

Describes how oil is used for lubrication, cooling, and sealing.

Installation

General Installation Checks

Checks for damage upon receipt and reporting of issues.

Unit Lifting and Transport

Proper methods for lifting and transporting the compressor package.

Installation Location Requirements

Guidelines for selecting an optimal installation site with proper ventilation.

Foundation and Mounting

Requirements for the compressor base and mounting.

Oil Reservoir Drain Procedure

Steps for draining oil from the reservoir.

Auxiliary Air Receiver Requirements

Capacity guidelines for auxiliary air receivers.

Moisture Separator and Trap Installation

Instructions for piping the moisture separator and drain.

Inlet Line Configuration

Notes on the air filter assembly and enclosure integration.

Discharge Service Line Connection

Details on connecting the discharge service line and check valves.

Blow Down Valve Piping

Information on the blow down valve and its venting.

Electrical Wiring and Connections

Guidance on connecting power supply and wiring the unit.

Electrical Wire Sizing Recommendations

Criteria for selecting appropriate electrical wire sizes.

Line Reactor Requirements

When a line reactor is required for power supply conditioning.

Grounding Requirements

Ensuring proper grounding according to electrical codes.

Motor Lubrication Guidelines

Information on motor bearing lubrication for satisfactory operation.

Starting and Operating Procedures

Pre-Start Up Checks

Essential checks and servicing before initial compressor operation.

Compressor Oil Level Check

Procedure for checking and adding compressor oil.

Air Filter Inspection and Replacement

How to inspect and replace the air filter element.

Shaft Coupling Inspection

Checking the coupling element for signs of wear.

Electrical Wiring Verification

Ensuring correct wiring of the unit and components.

Grounding Verification

Confirming proper grounding for controller function.

Motor Rotation Check

Verifying correct rotation direction for electric motors.

System Pressure Settings

Instructions for setting target, unload, and load pressures.

Setting the Target Pressure

Procedure to adjust the compressor's operating target pressure.

Setting Unload and Load Pressure

Adjusting the pressure points for unloading and loading the compressor.

Unit Starting Procedures

Step-by-step guide for starting the compressor.

Unit Stopping Procedures

How to safely stop the compressor and its associated systems.

Controls and Instrumentation

General System Description

Overview of the compressor package components and systems.

AirSmart Controller Functions

Details the integration and functions of the AirSmart controller.

Main Drive Motor and VFD

Explanation of the variable frequency drive and motor operation.

Piping and Instrumentation Illustration

Diagram showing system piping and instrument connections.

Wiring Diagram - 460 Volt

Electrical schematic for 460-volt configurations.

Wiring Diagram - 200/230 Volt

Electrical schematic for 200/230-volt configurations.

Wiring Diagram - 575 Volt

Electrical schematic for 575-volt configurations.

Compressor Lubrication, Separation, Filtration and Controls

Compressor Oil System Operation

How lubricating oil absorbs heat, lubricates parts, and seals clearances.

Recommended Lubricant and Specifications

Details on AEON 9000SP lubricant and its properties.

Lubricant Specifications

Properties of AEON 9000SP lubricating coolant.

Moisture in the Oil System

Avoiding water vapor condensation and identifying valve malfunctions.

Oil Sight Glass Level Check

Checking and adjusting the oil level using the sight glass.

Adding Oil Between Changes

Procedure for replenishing oil level as needed.

Oil Change Interval

Recommended intervals for changing the compressor lubricant.

Draining and Cleaning the Oil System

Steps for draining and cleaning the oil system.

Refilling the Oil System

Procedure for refilling the system after draining.

Compressor Oil Filter Maintenance

Importance and replacement intervals for the oil filter.

Oil Mixing Valve (Electronic) Function

How the valve mixes oil to control discharge temperature.

Normal Package Operation

How the oil mixing valve operates during normal conditions.

Low Air Demand Operation

Adjusting auto timer for low demand cycles to prevent condensation.

Oil Separation Reservoir and Coalescing Element

Functions of the oil/air separation system and coalescing element.

Oil Separation Performance

Expected oil carryover levels and factors affecting performance.

Coalescing Element Monitoring

Controller tracking of pressure differential for element service.

Oil Coalescing Element Service

Procedures for replacing or inspecting the coalescing element.

Heat Exchangers (Oil, Air)

Oil/Air Heat Exchanger Function

How heat exchangers reject compression heat using air or water.

Air-Cooled Heat Exchanger Maintenance

Cleaning procedures for air-cooled cores to maintain efficiency.

Water Separator and Drain

Function and servicing of the water separator.

Air Filter

Air Filter Function and Importance

How the air filter cleans incoming air for efficient operation.

Filter Element Inspection and Replacement

Steps for inspecting and replacing the air filter element.

Shaft Coupling

Shaft Coupling Function and Design

Description of the motor and compressor drive coupling.

Coupling Element Service

Procedures for inspecting and replacing the coupling element.

Interference-Fit Coupling Hub Service

Handling coupling hubs with transitional interference fits.

Coupling Hub Installation

Steps for mounting and installing coupling hubs.

Coupling Hub Removal

Procedure for removing coupling hubs, including interference fits.

Minimum Pressure/Check Valve

Minimum Pressure/Check Valve Function

Maintains reservoir pressure and prevents backflow.

Minimum Pressure Valve Inspection

Steps for inspecting the minimum pressure/check valve assembly.

Inlet Control Valve

Inlet Control Valve Function

Allows compressor readiness and quick response to air demand.

Inlet Control Valve Inspection

Checking valve seals for wear and tear.

Pressure Relief Valve

Pressure Relief Valve Function

Protects components from over-pressurization.

Pressure Relief Valve Testing

Procedure for testing the pressure relief valve annually.

Ventilation Filters (Electrical Enclosure)

Ventilation Filter Importance

Ensuring electronics operate efficiently by keeping filters clean.

Ventilation Filter Inspection and Cleaning

Steps for inspecting and cleaning ventilation filter elements.

Motor Lubrication

Motor Lubrication Procedure

Recommended grease, re-greasing intervals, and procedure.

Main Motor Grease Specifications

Details on recommended grease for the main motor.

Motor Regreasing Intervals

Lubrication intervals based on service type and operating conditions.

Maintenance Schedule

Service Check List

Daily, weekly, and periodic maintenance tasks.

1000 Hour Maintenance

Tasks to perform every 1000 hours of operation.

8000 Hour Maintenance

Tasks to perform every 8000 hours or as per oil analysis.

Yearly Maintenance Checks

Annual checks including heat exchangers, relief valve, and couplings.

Troubleshooting

Troubleshooting: Compressor Fails to Start

Possible causes and remedies for a compressor that won't start.

Troubleshooting: Stops After Short Time

Causes and remedies for premature compressor shutdown.

Troubleshooting: Unload/Load Issues

Causes and remedies for problems with unloading or loading.

Troubleshooting: Excessive Cycling

Causes and remedies for rapid load/unload cycles.

Troubleshooting: Slow Start

Causes and remedies for slow compressor startup.

Troubleshooting: Low Delivery Pressure

Causes and remedies for reduced air output and pressure.

Troubleshooting: Excessive Oil Consumption

Causes and remedies for high oil usage.

Troubleshooting: High Discharge Temperature

Causes and remedies for high air and oil temperatures.

Troubleshooting: VFD Overheat Shutdown

Causes and remedies for VFD shutdown due to overheating.

Troubleshooting: Oil at Intake Filter

Causes and remedies for oil found in the intake filter area.

Troubleshooting: Oil Carryover

Causes and remedies for oil being carried over with the air.

Warranty Information

General Warranty Provisions

General terms, conditions, and exclusions of the product warranty.

Warranty Periods

Specific warranty durations for different components.

Airends Warranty Details

Warranty coverage for airends, including shaft seals.

Major Package Components Warranty

Warranty for controller, VFD, motor, and other major parts.

Warranty Disclaimer

Exclusions and limitations of warranties provided.

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