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Qnergy CAP3F CAP3M and CAP3L from OilPro


In our last article we discussed the CAP3-F remote power configuration in detail. In this article we’ll focus on the CAP3-M configuration and why you might consider it for your remote power needs.

Introducing Compressed Air Pneumatics (CAP3)

This is the second in a series of three articles discussing the Qnergy Compressed Air Pneumatics (CAP3) remote power solution distributed by OilPro across Canada.

We’ll discuss all three solutions to consider. In this second article we’ll focus on the CAP3-M. It’s a less-expensive model with similar performance as the CAP3-F Walk-in Shelter with auxiliary equipment space and the higher electrical output. The smaller air output Nano CAP3 model is also available which we’ll discuss next in the third and final article on CAP3 configurations.

The Compressed Air Pneumatics product line first came to light when OilPro profiled its prototype at the Global Energy Show in 2019.  The product evolved significantly since as you now have three product lines to choose from which now include HMI’s and world class integrated SCADA integration and monitoring of genset and air systems.

Let’s focus on the CAP3-M for this article and why you might choose it over the CAP3-F and CAP3-Nano options.

Why choose CAP3-M for your remote power needs?

  • Same performance as F-model but in reach-in enclosure
  • Lower cost due to reduced enclosure size and no personnel entry requirements such as LEL and gas detection
  • Site design can accommodate items like custom RTU’s etc. in other available enclosures.
  • GHT option available

Qnergy CAP3-M standard features from OilPro


Area class rating General purpose
Temp rating -40°C to 40°C (45°C option) (-40°F to 104°F (113°F option)
Skid DIMS (with PowerGen) 94”W x 115.4”L x 65.7”H 2.43mW x 2.93mL x 1.66mH
Cabinet DIMS (standalone) 45”W x 115.4”L x 62.7”H 1.14mW x 2.93mL x 1.59mH
Weight Full Skid Weight: 2550 lbs CAP3 M Cabinet weight: 1500 lbs (excluding PowerGen and skid)
Heating 1250 W Electric Gravity louvre with air filter
Ventilation Filtered Intake
Exhaust fan Forced Air with rain hood
Enclosure insulation R12
Warranty 1 year CAP / 3 yr FPSE (Free Piston Stirling Engine)
Certification SPE1000 / cETLus


Generator (PowerGen Option)

Generator tech Free Piston Stirling Engine
Generator power 5650 W
Generator voltage 120/240 VAC 60Hz
Fuel consumption (NG) 1300-3964 SCF/d / 38-112 m3/d
Gas conditioning unit Heat Traced liquid KOP



Control Micro PLC / 7” HDMI with UV rated cover
PowerGen communications Smartview / Modbus TCP


Instrument Air System Specifications

  Standard High Pressure (HP) High Temperature (HT)
Compressor Duplex oil-free Duplex oil-free Duplex oil cooled
Compressor CFM 15.2 @ 100 psi 12.5 @ 145 psi  
Maximum pressure 116 psi 145 psi 150 psi
Maximum temperature 40°C 40°C 45°C
Dry tank capacity 80 gallon (303 l) 80 gallon (303 l) 132 gallon (500 l)

Air tank capacity: Desiccant Dryer – minimum 25°C dew point suppression

Air meter: Thermal Mass Flow Sensor

Maintenance interval: Once per year

Emergency power: Manual Transfer Switch

System Operations Specifications

  Standard Configuration 120/240VAC High Flow 3-phase, 240VAC  High Power
Operating pressure range 80-100 psig 80-100 psig 80-100 psig
Dry air capacity (duplex operation) 10.5 SCFM (18 SCFM) 12 SCFM (24 SCFM) 5.8 SCFM
Auxiliary power 1kW @ 120VAC 1kW @ 220VAC 2.4kW @ 120VAC



The federal government in Canada gives oil & gas firms incentives to reduce emissions with initiatives like the Emissions Reduction Fund – Onshore Program. CAP3 instrument air systems are an excellent solution.

You can also learn more about reducing your carbon footprint by clicking here.

Want to learn more? 

Contact OilPro at +1 403 215 3373 or contact us by email at [email protected]. We’ll help you learn more about how a Compressed Air Pneumatic system combining a low-maintenance scroll compressor with a virtually zero maintenance Qnergy Stirling engine, battery charging and a storage system will not only help your operations team comply but increase runtime while reducing freeze-ups caused by power outages or pneumatic line blockages.


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