Description

Chicago Pneumatic QRS 7.5 145 TM 7.5 HP Rotary Screw Air Compressor, 60-Gallon Tank - PN 4152054783

Quiet, Continuous-Duty Compressed Air in a Compact Tank-Mounted Package

The Chicago Pneumatic QRS 7.5 145 TM Rotary Screw Air Compressor, part number 4152054783, combines dependable rotary screw performance with a factory-mounted 60-gallon air receiver in a compact package designed for automotive, commercial, and light-industrial applications.

Powered by a 7.5 HP industrial motor, this fixed-speed rotary screw compressor delivers 25.3 CFM at 145 PSI. Its tri-voltage motor can be configured for 208, 230, or 460-volt three-phase electrical service, providing installation flexibility for a wide range of facilities.

The QRS 7.5 uses an advanced oil-injected rotary screw airend to provide smooth, consistent airflow with less vibration and pressure pulsation than a traditional reciprocating compressor. Its continuous operating capability makes it an excellent choice for businesses that rely on compressed air throughout the workday.

A sound-reducing enclosure limits operating noise to approximately 66 dBA, helping create a more comfortable working environment and allowing the compressor to be installed closer to active work areas when proper ventilation and service clearances are provided.

The included 60-gallon ASME/CRN air receiver tank provides valuable compressed-air storage, stabilizes system pressure, supports short periods of increased demand, and helps reduce frequent compressor starts and stops.

Manufacturer Part Number: 4152054783

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Key Features and Benefits

25.3 CFM at 145 PSI

Provides dependable airflow for automotive tools, tire-service equipment, woodworking machinery, maintenance tools, light fabrication equipment, and other appropriately sized pneumatic applications.

7.5 HP Rotary Screw Compressor

The advanced rotary screw airend delivers smooth, consistent compressed air with reduced vibration and pressure pulsation.

Tri-Voltage Three-Phase Motor

The industrial TEFC motor can be configured for:

• 208 volts, three phase
• 230 volts, three phase
• 460 volts, three phase
• 60 Hz operation

Final voltage configuration and electrical installation should be completed by a qualified electrician.

60-Gallon ASME/CRN Air Receiver Tank

The included receiver provides compressed-air storage while helping stabilize pressure, reduce frequent compressor starts and stops, and support short periods of increased demand.

Continuous Operating Capability

The QRS 7.5 is designed for extended operation throughout the workday. Unlike many piston compressors, it does not require frequent cooling periods between operating cycles when properly sized, installed, and maintained.

Quiet Enclosed Package

The sound-reducing enclosure limits compressor noise to approximately 66 dBA, making it substantially quieter than many open-frame reciprocating compressors.

Complete Tank-Mounted Design

The compressor is factory mounted on the receiver tank, reducing installation complexity and eliminating the need to purchase and pipe a separate air receiver.

Advanced High-Efficiency Screw Airend

The QRS 3-10M platform uses an updated screw airend designed to provide improved airflow and energy efficiency compared with its predecessor.

IE3 Efficiency Motor

The industrial IE3 motor supports continuous operation while helping reduce energy consumption compared with less-efficient motor designs.

Smooth, Pulse-Free Air Delivery

Rotary screw compression provides a steady supply of compressed air with less pulsation than a reciprocating compressor, supporting more consistent pneumatic-tool and production-equipment performance.

Low Oil Carryover

The QRS platform is designed for oil carryover below 5 ppm, helping provide cleaner compressed air than many traditional lubricated piston compressors.

Start/Stop Operation

The QRS 7.5 uses straightforward start/stop control to manage compressor operation according to system pressure.

Spin-On Service Components

Spin-on oil-filter and air-oil separator components help simplify scheduled preventive maintenance.

Vibration-Isolated Assembly

Internal vibration isolation helps reduce vibration transferred to the receiver tank, surrounding floor, and connected compressed-air piping.

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Standard Features

• 7.5 HP oil-injected rotary screw compressor
• 25.3 CFM at 145 PSI
• 208-230/460V three-phase electrical configuration
• 60-gallon ASME/CRN air receiver tank
• Tank-mounted design
• Fixed-speed operation
• Continuous operating capability
• Approximately 66 dBA sound level
• Sound-reducing enclosed canopy
• Advanced high-efficiency rotary screw airend
• IE3 efficiency motor
• Smooth, pulse-free compressed-air delivery
• Start/stop operation
• Air-cooled design
• Spin-on oil filter
• Spin-on air-oil separator
• Low oil carryover
• NEMA 1 electrical protection
• Vibration-isolated assembly
• UL, cUL, and CSA-approved control panel
• Compact workshop-friendly footprint
• Easy-access service components

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Technical Specifications

Dimensions and weight are approximate and may vary with the final factory configuration.

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Recommended Applications

The Chicago Pneumatic QRS 7.5 145 TM is well suited for:

• Automotive repair shops
• Tire-service facilities
• Fleet-maintenance shops
• Automotive dealerships
• Motorcycle and powersports repair
• Woodworking shops
• Cabinet shops
• Maintenance departments
• Light manufacturing
• Small fabrication operations
• Pneumatic assembly equipment
• Packaging equipment
• General workshop air
• Air-operated pumps and controls
• Small production facilities
• Commercial compressed-air systems

Total operating demand should be calculated using the tools and equipment that may operate simultaneously.

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Benefits of the 60-Gallon Receiver Tank

The included 60-gallon receiver provides stored compressed air that helps the system respond to short periods of increased demand.

Potential benefits include:

• Stabilizes compressed-air system pressure
• Provides stored air for intermittent demand
• Reduces frequent compressor starts and stops
• Supports short bursts of higher air consumption
• Allows compressed air to cool before entering the piping system
• Encourages condensate separation
• Reduces pressure fluctuations at pneumatic equipment
• Simplifies installation compared with a separate receiver

The receiver tank does not increase the compressor’s continuous airflow capacity. Sustained air consumption must remain within the compressor’s rated output of 25.3 CFM at 145 PSI.

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Why Choose a Rotary Screw Compressor?

Longer Operating Hours

Rotary screw compressors are designed for extended operation and do not require the frequent cooling periods associated with many reciprocating compressors.

Lower Sound Levels

At approximately 66 dBA, the enclosed QRS 7.5 is substantially quieter than many open-frame piston compressors.

Smoother Air Delivery

Rotary screw technology produces a steady flow of compressed air with less pulsation and vibration.

Cleaner Compressed Air

Low oil carryover helps protect pneumatic tools and downstream equipment from excessive lubricant contamination.

Compact Installation

The compressor and receiver are combined into one space-saving package that simplifies installation.

Reduced Vibration

The rotary screw design and vibration-isolated assembly help reduce vibration transferred to the floor and connected piping.

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Air Treatment Recommendations

This compressor does not include an integrated refrigerated air dryer.

Atmospheric air contains water vapor that becomes concentrated during compression. As compressed air cools inside the receiver and piping system, that moisture can condense into liquid water.

Depending on the application, the system may require:

• Refrigerated compressed-air dryer
• Moisture separator
• Automatic receiver-tank drain
• Coalescing air filter
• Particulate air filter
• Activated-carbon filter
• Pressure regulator
• Oil-water separator
• Point-of-use air treatment

Automotive painting, CNC equipment, instrumentation, and moisture-sensitive production applications normally require a properly sized refrigerated dryer and appropriate downstream air treatment.

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Installation Considerations

The compressor should be installed indoors on a level, structurally adequate surface with adequate ventilation and service access.

Before installation:

1. Confirm that the facility has 208, 230, or 460-volt three-phase electrical service.
2. Verify that the electrical panel has sufficient capacity for the compressor motor.
3. Confirm that total air demand is within the compressor’s 25.3 CFM capacity.
4. Verify that piping and downstream equipment are rated for the operating pressure.
5. Provide adequate ventilation around the compressor.
6. Prevent heated discharge air from recirculating into the cooling-air intake.
7. Keep all cooling and ventilation openings clear of obstructions.
8. Install the required electrical disconnect and overcurrent protection.
9. Use properly sized compressed-air piping.
10. Install a flexible connection between the compressor and rigid piping.
11. Install and test an automatic condensate drain on the receiver tank.
12. Route oily condensate to an approved oil-water separator or disposal system.
13. Maintain the manufacturer’s recommended service clearances.
14. Confirm proper motor rotation before placing the compressor into service.
15. Confirm all electrical and mechanical connections before operation.

Electrical installation should be completed by a qualified electrician according to the equipment instructions and applicable local codes.

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Routine Maintenance

Proper preventive maintenance helps protect airflow, operating efficiency, temperature control, and compressor life.

Typical maintenance includes:

• Check the compressor lubricant level.
• Inspect and replace the intake air filter as needed.
• Replace the oil filter at the recommended interval.
• Replace the air-oil separator when required.
• Use approved rotary screw compressor lubricant.
• Clean the oil cooler and ventilation surfaces.
• Keep the cooling-air intake and discharge areas clear.
• Inspect hoses, fittings, valves, and electrical connections.
• Check the receiver tank and condensate drain.
• Inspect the compressed-air system for leaks.
• Monitor the compressor for abnormal sound or vibration.
• Follow all maintenance intervals listed in the operating manual.

Maintenance requirements may vary according to operating hours, ambient temperature, humidity, dust levels, and installation conditions.

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Warranty Information

1-Year Standard Warranty

Eligible for up to 5 years of warranty coverage. Terms and conditions apply.

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Basic Troubleshooting

Compressor Cannot Maintain Pressure

Check for compressed-air leaks, an open condensate drain, a restricted intake filter, incorrect pressure settings, or downstream demand exceeding the available 25.3 CFM.

Compressor Starts and Stops Frequently

Check for compressed-air leaks, rapidly changing air demand, incorrect pressure settings, or an open condensate drain.

Compressor Runs Hot or Shuts Down

Inspect room ventilation, cooler cleanliness, lubricant level, intake restrictions, ambient temperature, and the possibility of heated cooling air recirculating into the compressor.

Compressor Does Not Start

Check the electrical disconnect, incoming voltage, circuit protection, emergency stop, pressure settings, and any active fault condition.

Compressor Rotation Is Incorrect

Three-phase electrical connections may need to be corrected to achieve proper motor rotation. Disconnect power and have a qualified electrician correct the phase rotation before operating the compressor.

Excessive Moisture Downstream

Check the receiver-tank drain and condensate-removal equipment. Install a properly sized refrigerated dryer when dry compressed air is required.

Excessive Pressure Drop

Inspect compressed-air piping, isolation valves, regulators, hoses, and downstream air-treatment components for restrictions.

Excessive Oil Downstream

Check the lubricant level, separator condition, operating temperature, maintenance history, and whether the compressor is operating for extremely short periods.

Unusual Noise or Vibration

Shut down the compressor and inspect for loose panels, damaged isolation mounts, loose fittings, worn bearings, or other mechanical issues.

Electrical repairs, internal pressure-system repairs, airend service, and major compressor repairs should be performed by qualified personnel.

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Frequently Asked Questions

How much air does the Chicago Pneumatic QRS 7.5 145 TM produce?

The three-phase QRS 7.5 produces 25.3 CFM at a maximum working pressure of 145 PSI.

What is the manufacturer part number?

The manufacturer part number is 4152054783.

What size air receiver tank is included?

This compressor is mounted on a 60-gallon ASME/CRN air receiver tank.

Does this compressor require three-phase power?

Yes. This configuration requires three-phase electrical service.

What voltages can this compressor use?

The motor can be configured for 208, 230, or 460-volt three-phase power.

Does this compressor include a refrigerated dryer?

No. This configuration does not include an integrated refrigerated air dryer.

Can the QRS 7.5 operate continuously?

Yes. The QRS 7.5 is designed for continuous operating capability when properly sized, installed, ventilated, and maintained.

How loud is the Chicago Pneumatic QRS 7.5?

The QRS 7.5 has an approximate sound rating of 66 dBA.

Is this compressor suitable for an automotive repair shop?

Yes. It is well suited for automotive repair, tire service, maintenance, and workshop applications when total simultaneous demand remains within 25.3 CFM.

Can it operate multiple air tools?

Yes, provided the combined consumption of all tools operating simultaneously does not exceed the compressor’s available airflow.

Can this compressor operate an automotive lift?

Most automotive lifts use compressed air only for safety-lock release and consume relatively little air. Suitability depends on the combined demand of the lift and other tools operating at the same time.

Is it suitable for a tire machine and wheel balancer?

Yes, for many smaller tire-service shops. Final sizing should account for tire changers, bead blasters, impact tools, and other equipment that may operate simultaneously.

Can this compressor be used for painting?

It can supply air for appropriately sized paint applications, but a refrigerated dryer and suitable downstream air treatment are normally required.

Does the 60-gallon receiver increase the compressor’s CFM?

No. The receiver provides stored compressed air but does not increase the compressor’s continuous airflow capacity.

Why choose this instead of a piston compressor?

The QRS 7.5 provides continuous operating capability, quieter performance, smoother airflow, lower vibration, and reduced oil carryover compared with many traditional piston compressors.

What warranty is included?

This compressor includes a one-year standard warranty and may be eligible for up to five years of warranty coverage. Terms and conditions apply.

How do I determine whether 25.3 CFM is enough?

Add the CFM requirements of all tools and equipment that may operate at the same time. Include additional capacity for compressed-air leaks, peak demand, and future growth.

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Our team can help determine whether the Chicago Pneumatic QRS 7.5 145 TM provides the correct airflow, pressure, electrical configuration, storage capacity, and air quality for your application.

When you need dependable equipment backed by real-world compressed-air knowledge, Compressed Air Advisors Online is your compressed-air partner.

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