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NuAir B3800B-PRO/200 FM4 UK - Stationary Piston Compressor, 3 kW, 200 Litre, 10 Bar, 230V
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Sealey CPO1S Compressor Oil ISO68/SAE20W - 1 Litre
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Sealey AHFC15 Air Hose High-Vis 15m x 8mm 1/4
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Technical Specification
PRODUCT NUMBER S-N4LN601FPS171S-N7LN701FPS0442092360208138022453152092292
Warranty 12121212
Capacity (L) 200200200200200200
Max Pressure (psi) 1010
Maximum Pressure (bar) 1010
Power (kW) 34
Weight (kg) 40015115210798

Q 1. What is the NuAir B3800B-PRO/200 FM4 UK designed for?

A. The B3800B-PRO/200 FM4 is a stationary belt-driven piston compressor on a 200-litre receiver, aimed at heavier-duty workshop and trade applications.

Q 2. How powerful is the FM4 version's electric motor compared with FM3?

A. This FM4 variant uses a more powerful 3kW, 4Hp 230V single-phase motor with overload protection, offering increased airflow for demanding users.

Q 3. What displacement airflow does the B3800B-PRO/200 FM4 provide?

A. It provides 495 L/min displacement, around 18 cfm, enabling the use of higher-consumption air tools or multiple tools in a busy workshop.

Q 4. What maximum pressure rating does the B3800B-PRO/200 FM4 achieve?

A. Like the FM3, the FM4 version operates up to 10 bar, or 145 psi, covering most automotive, agricultural and general workshop air requirements.

Q 5. What noise level can users expect from the B3800B-PRO/200 FM4?

A. The compressor is rated at 72 dB(A) and uses the low-noise B38B lubricated pump, making it relatively quiet for its output and receiver size.

Q 6. What are the key benefits of the B38B compressor pump on this unit?

A. The B38B single-stage lubricated pump offers low noise, robust airflow and reliable long-term operation when correctly maintained and lubricated.

Q 7. How does the NuAir FM4 manage cooling during extended operation?

A. Its advanced cooling system channels airflow across the head, valves and after-cooler, reducing heat build-up and supporting longer duty cycles.

Q 8. Why is belt drive important on the B3800B-PRO/200 FM4 compressor?

A. Belt drive allows the pump to run at reduced speed, lowering noise, vibration and mechanical wear compared with similarly sized direct-drive compressors.

Q 9. What receiver capacity does the FM4 model use and to what standard?

A. The compressor sits on a 200-litre air receiver built to CE standards, ensuring safe air storage and consistent performance for workshop use.

Q 10. What electrical supply and protection does this compressor require?

A. It runs from a 230V single-phase 1/50Hz supply, and the 3kW motor includes full overload protection to guard against electrical faults.

Q 11. What warranty supports the B3800B-PRO/200 FM4 pump assembly?

A. NuAir offers a five-year warranty on the compressor pump, subject to adherence to the recommended maintenance schedule.

Q 12. Which users are best matched to the B3800B-PRO/200 FM4?

A. Busy garages, workshops and small manufacturing sites needing higher airflow from a 230V single-phase supply are ideal users for this model.

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