Included and separately quoted: compressor frame, oil system, capacity control, motors and factory documents versus site piping, refrigerant charge, commissioning and SAT logging.

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Independent machinery sourcing · Handover

refrigeration compressor

Refrigeration Compressor Sourcing is an independent sourcing partner for US buyers who need a refrigeration compressor selected at a named refrigerant and operating temperatures rather than ranked by housing size. Share refrigerant, evaporating and condensing conditions, architecture (screw or reciprocating), quantity and destination so we can request comparable factory wholesale quotes. This site does not sell from warehouse stock and does not claim original-equipment identity. Catalog displacement in cubic metres per hour at 50 Hz or 60 Hz is not cooling duty until the selection sheet names the same evaporating temperature, condensing temperature, superheat and subcooling. Adjacent chillers, freezer rooms and complete plant packages belong on their dedicated sites; this cluster covers compressor frames and the oil-management hardware that ships with them.

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Product changeover questions

A refrigeration compressor changeover is a refrigerant, oil and control question, not a paint-color swap. When the process load, condensing media or part-load band changes, the same housing can still sit outside the published envelope. Write those changes into the brief so factories do not reuse a previous selection sheet.

What changes between products?

Refrigerant family, evaporating and condensing temperatures, capacity-control method (slide valve, inverter, cylinder unloading) and whether the duty is transcritical CO2. A compact screw family used with HFC blends is not evidence that the same rotor set accepts R744; public compact-screw notes and transcritical reciprocating notes describe separate envelopes.

What must be cleaned or replaced?

Oil charge, oil filters, suction strainers, coupling or motor if voltage changes, and any capacity-control hardware that is not listed as included. Replacement after a burnout also needs a cleanliness method; matching flange size does not clear acid or debris from the circuit.

How is the first good output verified?

Record suction and discharge pressure, oil temperature, delivered kW and electrical input at an attainable test condition, with a written method for evaluating any difference from the design point. FAT at the supplier and SAT with plant loads running belong to whoever the purchase order names; this desk does not witness those runs by default.

Replacement versus new installation for a refrigeration compressor

Existing process

Many inquiries start because a frame failed, not because a new plant is being laid out. Matching suction and discharge connections is not a drop-in specification. The existing model, motor data, oil type, operating history and the system conditions that led to the failure still have to travel with the RFQ. Continue with the replacement-package article.

Ask which oil, protection, control and mounting components accompany the quoted unit, and keep compressor supply separate from refrigerant handling and plant acceptance.

Questions buyers ask before requesting a refrigeration compressor

Which procurement scope is covered by refrigeration compressor?

Defined specification

If refrigerant, evaporating and condensing temperatures, architecture, quantity and destination are already written, send that package so refrigeration compressor manufacturers quote the same duty. Ask them to name oil management, capacity control and motors as included or extra.

Send requirements

Selection still open

If screw versus reciprocating, or HFC versus R744, is still undecided, start with sourcing steps so bidders do not mix a compact-screw catalog sheet with a transcritical reciprocating selection. Public ECOLINE pages identify displacement at a stated frequency; that number is not refrigeration capacity.

Review sourcing steps

Which responsibilities remain with the equipment supplier and buyer?

The buyer supplies process loads, site condensing media and the quality method for SAT. The named supplier confirms architecture, oil arrangement, service access, lifting requirements and what is excluded from interconnecting refrigerant piping. Refrigeration Compressor Sourcing coordinates comparable replies; it does not accept SAT on behalf of the plant. Read displacement notes before treating m3/h as cooling duty.

Write refrigerant and temperatures before ranking compressor frames

Discuss Your Requirements

Include with your enquiry

What changes between products?

Refrigerant, evaporating and condensing temperatures, screw versus reciprocating architecture, and the required control range. Those items change oil systems and SAT scripts even when the family name looks familiar.

What must be cleaned or replaced?

Oil, filters, strainers and any motor that does not match site voltage and frequency. List them as included or extra so they do not hide inside a lump sum.

How is the first good output verified?

Record pressures, oil temperature, delivered kW and electrical input at a named condition. Do not convert catalog displacement into capacity without the supplier selection sheet.

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Procurement requirement

Include product and process (refrigerant, evaporating and condensing temperatures, screw or reciprocating architecture, required control range); required cooling duty in kW and its test conditions, not only catalog displacement in m3/h at 50 Hz or 60 Hz; electrical supply (voltage, phase and frequency); utilities such as cooling water, oil cooling, work envelope, footprint and suction/discharge interfaces; quantity, destination and required delivery window; acceptance sample, inspection scope, commissioning and spare parts; optional budget with currency and per-unit or whole-order basis; optional supplier preference (high-end, mid-range, budget or undecided). For CO2 duty, name the dedicated pressure envelope and oil-management arrangement. Drawings can be sent after we reply; this form has no upload field.

Add specification, quantity, destination and timing before sending.

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JavaScript is off. Write optional target budget (currency and per-unit or whole-order basis) and supplier preference (high-end, mid-range, budget-friendly, or not sure) directly in the procurement requirement box so they travel with the original fields.