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Refcomp S.r.l.

SP Series – Semi-hermetic Single-Stage Piston Compressor (SP2 / SP4 / SP6 / SP8 sub-families)

Refcomp S.r.l. SP Series – Semi-hermetic Single-Stage Piston Compressor (SP2 / SP4 / SP6 / SP8 sub-families) — Commercial and industrial refrigeration; air-conditioning at medium/low evaporating temperatures (down to -40 °C with R404A/R507/R22, up to +80 °C condensing with R134a).

Components & Design

Component data being added…

Technical Data

power kW 2.2–52 kW (3–70 HP); 34 models total
airflow m3h Displacement 17.5–222 m³/h at 50 Hz
speed rpm 1450 rpm (50 Hz) / 1750 rpm (60 Hz)
cylinders 2, 4, 6 or 8
refrigerants R22, R407C, R134a, R404A, R507
max working pressure bar 28

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Common failures & inspection points

Check valve plates and valve reeds for wear, cracking or carbon deposits; replace at manufacturer-recommended intervals

Check valve plates and valve reeds for wear, cracking or carbon deposits; replace at manufacturer-recommended intervals

Inspect and change crankcase oil at prescribed intervals; verify correct oil type (POE or mineral) and check oil level sight glass

Inspect and change crankcase oil at prescribed intervals; verify correct oil type (POE or mineral) and check oil level sight glass

Verify crankcase heater function before startup and after extended shutdowns to prevent refrigerant migration and liquid slugging

Verify crankcase heater function before startup and after extended shutdowns to prevent refrigerant migration and liquid slugging

Check suction and discharge pressure and compare against expected values for operating conditions; investigate deviations promptly

Check suction and discharge pressure and compare against expected values for operating conditions; investigate deviations promptly

Inspect shaft seals and gaskets for refrigerant leaks using electronic or UV leak detection methods

Inspect shaft seals and gaskets for refrigerant leaks using electronic or UV leak detection methods

Check motor winding resistance and insulation resistance (Megger test) to detect moisture ingress or incipient winding failure

Check motor winding resistance and insulation resistance (Megger test) to detect moisture ingress or incipient winding failure

Inspect and clean suction strainer / filter to prevent contamination ingress into cylinder bores and valve gear

Inspect and clean suction strainer / filter to prevent contamination ingress into cylinder bores and valve gear

Verify oil differential pressure protection (oil pressure switch) is functional and set within manufacturer specification

Verify oil differential pressure protection (oil pressure switch) is functional and set within manufacturer specification

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #151956 · ✓ still in production