Atlas Copco 1623711700 Cooler

Description

In an oil-injected screw compressor the hottest point sits at the compression stage, and one of the oil’s jobs is to carry that heat away from the rotors. The 1623711700 is a cooler recorded in the Atlas Copco parts system for that heat-removal duty, listed under the S3A Cooler rate group with Sweden as its origin. It is a compact heat exchanger, and the number is what a workshop quotes when the original unit comes out of a machine.

Because the record gives the part simply as a cooler, the surrounding circuit decides whether it handles lubrication oil or compressed air. That distinction is settled by the compressor model and serial, not by the size of the exchanger. Seadweer checks the 1623711700 against the build record before the order is placed, so the 1623711700 goes back into the position its parts list names.

What a cooler removes from a compressor

Compression generates more heat than any other stage of the screw cycle. Lubricating oil absorbs that heat at the rotors, and when internal temperature runs too high the oil degrades and can no longer do its job, which leads to compressor failure. The 1623711700 belongs to the class of exchangers that closes this loop by passing the heat to a cooling medium.

The same compressor also produces hot compressed air that carries water vapour. Cooling that air is a separate task from cooling the oil, and a single machine can carry more than one exchanger for the two duties. Which of those duties the 1623711700 serves is read from the parts list for the serial, and the 1623711700 is fitted to that position rather than to a guessed one.

Oil coolers, aftercoolers and intercoolers

Three exchanger types appear across Atlas Copco compressor packages, and each one works on a different stream. An oil cooler handles the lubrication oil that leaves the gears, bearings and rotors hot. An aftercooler cools the hot compressed air while removing condensation, preventing moisture buildup in the pipe system. The 1623711700 is one number within this family of heat-exchange parts.

An intercooler sits between the stages of a multi-stage machine, while the aftercooler works after the final stage; only multi-stage packages use an intercooler. An aftercooler is normally fitted with a water separator and an automatic drain and mounted close to the compressor. Keeping these three roles apart is the reason the 1623711700 is ordered by number and serial rather than by appearance.

Air-cooled and water-cooled circuits compared

An air-cooled package uses forced ventilation inside the compressor. The constantly running fan raises energy use but keeps the circuit cleaner, with fewer contaminants passing through the machine. A cooler such as the 1623711700 sheds heat to the air stream pushed across its fins by that fan.

A water-cooled package removes about 90 percent of the heat produced and places far less demand on room ventilation. Open systems draw from an external supply or a cooling tower, while a closed system circulates pure softened water between the compressor and an external heat exchanger. Where surrounding air does the cooling, antifreeze is required and the 1623711700 flow has to be recalculated for the changed heat capacity.

Neither layout changes how the 1623711700 is identified. The cooling side belongs to the machine, and the part number belongs to the exchanger, so the build record for the serial is what joins them. Scale in hard water, or dust on a finned surface, reduces heat transfer in either arrangement and is dealt with as a condition of the circuit.

Recorded identification and build data

The parts record lists the 1623711700 under the description COOLER with the product group code PMZA and the rate group S3A Cooler. Its country of origin is recorded as Sweden, and the tariff code for the unit is 84195080. These fields travel with the part through ordering and customs documentation.

Quoting the number from the old unit is the shortest route to the correct record. Where the label has worn away, the compressor nameplate supplies the model and serial that locate the same line in the parts list. Seadweer uses both references to confirm the 1623711700 before the order is placed.

Dimensions and weight

Each 1623711700 measures 35 cm in length, 11 cm in width and 8 cm in height, with a recorded weight of 4.61 kg. The shallow 8 cm profile and the narrow 11 cm face suit a tight bay where a larger exchanger would not clear the surrounding pipework. These figures come from the item record for the part.

Size is worth checking before a replacement is ordered, because coolers in the same rate group can share a name while occupying different envelopes. Comparing the 35 × 11 × 8 cm figure against the unit being removed is a quick field check. The 1623711700 goes back into the original mounts when it is the line the parts list names.

Where a compact cooler sits in the machine

A cooler of this size works inside the package rather than as a floor-standing unit. It sits in the oil or air line with its ports meeting the existing connections, and its face is presented to the cooling air or water path. The 1623711700 is handled as the production exchanger for that position, not as a resized substitute.

On water-cooled packages the oil cooler and the aftercooler can sit in the same cooling-water circuit, with the water passing through the tube stacks of both exchangers before leaving the machine. A thermostatic bypass valve holds oil away from the oil cooler while it is cold and opens fully once the oil reaches its working band. That is system behaviour of the package, and the 1623711700 is identified from its parts list rather than from that behaviour.

Keeping cooling performance over time

A cooler loses efficiency when its surfaces pick up dust or its water side collects scale. On an air-cooled unit, clearing surface dirt and keeping the cooling air free of debris restores performance. On a water-cooled unit, flushing the circuit and refilling it with treated water addresses the deposits that lower heat transfer in the 1623711700 and its neighbours.

Inspection follows the condition of the circuit rather than a fixed hour count. A rise in operating temperature, a drop in cooling-water flow, or a visible build-up on the fins are the signals that call for attention to the 1623711700. Winter shutdowns on water systems call for draining or frost protection, and a closed loop is filled with pure softened water before it returns to service.

Reading high temperature as a cooling fault

A compressor that runs hot gives a short list of cooling-related causes to work through. Restricted cooling air, a low oil level, a dirty cooler surface and an obstructed exchanger appear together on the troubleshooting chart for high outlet temperature. On water-cooled machines, high inlet water temperature, low flow and a scaled circuit join that list for the 1623711700.

Working down the list in order keeps the diagnosis simple, because a dirty or restricted cooler is more common than a failed internal component. Once the exchanger is clean and the air or water path is restored, the machine returns to its designed temperature band. The 1623711700 is checked at that stage against the ports and mounts it came from.

Confirming the part before replacement

Replacement starts with reading the number on the cooler being removed, then noting the model and serial from the compressor nameplate. The parts record for that serial names the exchanger built into its circuit, so the fitment is confirmed rather than guessed. The 1623711700 is the line booked against when that record returns this number.

Plants that run a mixed fleet keep the model, the serial and the cooler number together in one record per machine. That record turns the next renewal of the 1623711700 into a single confirmed message, and it keeps the 35 × 11 × 8 cm envelope with the part number for the next fitter. A clean record also avoids ordering a cooler from a neighbouring rate group by mistake.

FAQ

What does the 1623711700 cooler do in a compressor?

It removes heat from the oil or the air circuit so the machine holds its designed temperature band. Which of those streams the 1623711700 serves is settled by the parts list for the serial. The number is the reference Seadweer checks before the order is placed.

Is the 1623711700 an oil cooler or an aftercooler?

The item record gives the description COOLER without naming the stream. An oil cooler handles lubrication oil, while an aftercooler cools compressed air and removes condensation. Quote the number on the old unit with the model and serial, and the 1623711700 fitment is confirmed from the build record.

What are the recorded dimensions and weight?

Each 1623711700 measures 35 cm in length, 11 cm in width and 8 cm in height, with a weight of 4.61 kg. The compact envelope suits a tight bay inside the package. Compare those figures with the unit being removed before the order is raised.

Which cooling medium does the 1623711700 use?

That is set by the machine the 1623711700 is built into, not by the item record alone. Air-cooled packages use forced ventilation, while water-cooled packages use a circulating water circuit. The parts list for the serial settles which one applies.

What makes a cooler lose efficiency?

Dust on an air-cooled surface and scale on a water-cooled circuit both reduce heat transfer. Restricted cooling air, low water flow and a low oil level can produce the same high-temperature symptom on the 1623711700. Cleaning follows the condition of the circuit rather than a fixed interval.

How do I confirm the 1623711700 is the right part?

Quote the number on the cooler you removed and add the model and serial from the nameplate. A worn or unreadable label is no obstacle, since the build record for that serial identifies the exchanger by position. Seadweer checks the 1623711700 match before the order is placed.

Genuine supply from Seadweer

When you need a 1623711700, send the machine model and serial so the fitment is checked against the build record before the order is placed. The nameplate carries everything needed for that check, because each serial has its own parts list. The 1623711700 ordered this way is the correct exchanger for the circuit it is built into, with the origin and tariff recorded as supplied.

A confirmed part number also keeps a mixed fleet record accurate, because the cooler arrives as the item the planned service calls for. The 1623711700 is the genuine Atlas Copco cooler for the machines whose parts list names it, supplied with the description, rate group, origin and tariff recorded exactly as the parts system lists them. Send the number with the model and serial, and the 1623711700 is checked against that record first.

More Coolers We Can Supply

Other Atlas Copco coolers are available upon request. Please check the table below or contact us for details.