Atlas Copco 1622001710 Scavenge Line

Nom de la pièce: Scavenge Line (Oil Separator Oil Return Copper Tube / Metal Return Line Assembly)

Related adjacent part: 1622001700 (Scavenge Line of the same series)

1. Informations de base

Numéro de pièce.: 1622001710

Description: Scavenge Line (oil-injected screw air compressor oil return pipeline)

Matériel: Metal copper tube assembly with fittings

Applicable units: Atlas Copco GA series oil-injected screw air compressors (widely used for GA22)

Fonction: Residual oil collected at the bottom of the oil separator element flows back to the compressor main rotor chamber through this line under pressure difference, also known as oil separator return oil pipe.

2. Principe de fonctionnement

After oil-gas separation inside the oil separator tank, separated residual oil returns to the main rotor chamber of the compressor via the 1622001710 scavenge line by pressure difference.

If the pipeline is blocked, cracked or the fitting leaks, the following faults will occur:

1. High oil content in compressed air, excessive oil consumption / oil carryover
2. Abnormal liquid level in oil separator tank
3. Insufficient lubrication for airend, increasing risk of airend wear
4. Diagnostic des pannes & Notes de remplacement
5. Common failures: Copper tube cracking, thread stripping on fittings, carbon deposit clogging inside pipeline, aging and oil leakage of O-rings
6. Pre-replacement steps: Shut down and relieve pressure, confirm zero pressure inside oil separator tank; clean carbon deposits inside pipeline; inspect O-rings at both ends, seal parts are recommended to be replaced together.
7. Installation: Do not forcibly bend the copper tube to avoid stress cracking; control tightening torque to prevent fitting deformation.
8. Alternative & Customs Declaration Information

Alternatives nationales: Many aftermarket copies available with identical external dimensions, but differences exist in material, pressure resistance and aging resistance compared with OEM parts. OEM is preferred for continuous heavy-duty working conditions.

Référence du code SH: 84149090 (spare parts for air compressors)

5. Related Spare Parts Reference

Oil separator insert: 2903087100

Alternative scavenge line: 1622001700

Matching sealing O-rings: Refer to part explosion drawing as required

Difference between 1622001700 et 1622001710 Scavenge Line

Both are scavenge line copper tube assemblies for GA series oil-injected screw compressors, oil separator tank secondary oil return. Same thread specification at ports, NOT DIRECTLY INTERCHANGEABLE. Core difference lies in tube length, bending angle and installation routing, for different power / different generation GA units.

✅ 1622001700

Applicable units: GA15 / GA18 / GA22 (older fixed speed models, produced approx. 2000~2008 with original cabinet structure)

Profil: Shorter copper tube with small bending radius, compact installation space

Installation route: From bottom of oil separator element to air inlet side of airend, short-distance oil return

Caractéristiques: Standard part for early fixed-speed GA22; narrow internal cabinet layout with limited space for pipe routing

Remarque: Part explosion drawing of some old GA22 lists this part number.

✅ 1622001710

Applicable units: GA22 VSD variable speed models + later revised fixed-speed GA22 (cabinet upgraded after 2008)

Profil: Longer copper tube with an extra bend; routing to avoid VSD module and cooling air duct inside cabinet

Installation route: Outlet from bottom of oil separator tank, bypassing the VSD housing with longer pipe routing

Common pitfall: Same GA22 nameplate, but pre-revision fixed-speed machines use 1622001700; GA22 VSD and revised GA22 use 1622001710

Tableau de comparaison

⚠️ Critical Selection Reminders

1. Do NOT select only based on GA22 power rating! Verify by machine serial number / explosion drawing

Even with identical GA22 nameplate, part number of scavenge line changes before and after cabinet revision, which is the most common cause of wrong spare part purchase.

2. On-site quick verification method:

Shut down and remove side panel, compare length and bending route of old pipe. Short pipe with simple bend = 1622001700; longer pipe with extra bend to bypass VSD =1622001710.

3. Risk of wrong installation: Copper tube sustains continuous vibration stress, resulting in copper crack and oil leakage / oil carryover in short operation time.

Supplément

Both share identical O-ring sealing specification. O-rings at both ends are recommended to be replaced together regardless of part number.

Complete OEM Maintenance & Service Kit List for GA22 (VSD model fitted with 1622001710 scavenge line)

Note: Kit numbers for GA15/GA18/old GA22 (1622001700 scavenge line) vary slightly. Below covers 4000hr minor service kit, 8000hr major service kit, special valve / airend overhaul kit, plus individual filter part numbers.

1. 4000 Hour Service Kit (Routine Annual Maintenance)

2901086601｜FILTER KIT GA/X15-22

Contents:

1. Air filter 1622007900
2. Oil filter 1622002400
3. Oil separator insert 2903087100

En vigueur: GA15/GA18/GA22 fixed speed & GA22 VSD; 4000hr replacement, complete 3-filter set.

2901194802｜4000hr Air + Oil Filter Kit for VSD models (without oil separator insert)

Contents:

1. Air filter 1622007900
2. Oil filter 1622002400

Remarque: Oil separator insert is normally replaced every 8000 heures, may be replaced earlier under severe working conditions.

2. 8000 Hour Major Preventive Maintenance Kit (2901120300)【Key】

KIT PREV.MAINT. GA15-22/-13BAR, 8000hr full preventive maintenance kit

Included components:

1. 2901086601 3-filter kit (air filter, oil filter, oil separator insert)
2. Thermostatic valve service kit (60℃ thermostatic element + seals)
3. Non-return valve service kit including seals and valve disc
4. Full set of relevant O-ring seals (for oil separator tank and pipe fittings)

En vigueur: GA15/GA18/GA22 13bar models (vitesse fixe & VSD); 8000hr deep maintenance, replace thermostat and non-return valve besides filters.

3. Special Service Kits (Soupape, Moteur, Airend Overhaul Kits)
4. Inlet Valve Service Kit 2902016100

For GA22, includes inlet valve diaphragm, piston, springs and full set of sealing O-rings; typical faults: failure to load, no unloading, air leakage, pressure build-up failure.

2. Motor Overhaul Kit 2901195200 KIT MOTOR OVERHAUL GA11+22

Motor bearings, oil seals, grease; for abnormal motor noise and bearing wear replacement.

3. Airend Shaft Seal Service Kit 2901500500

Main shaft oil seal and dust seal of airend; dedicated kit for oil leakage at airend shaft end.

4. Minimum Pressure Valve Service Kit 2901000100

MPV valve core, spring and seals; typical faults: échec de rétention de pression, sudden pressure drop at startup.

4. Loose Spare Parts List (Matching Spares for Above Scavenge Line)

Scavenge Line: 1622001710 (GA22 VSD / revised GA22) / 1622001700 (old fixed-speed GA22)

Oil separator insert: 2903087100

Air filter: 1622007900

Oil filter: 1622002400

Thermostatic valve element: 1622002700

Minimum pressure valve assembly: 1622000400

Non-return valve assembly: 1622001900

5. Approvisionnement & Notes de sélection
6. Pressure rating distinction: Kits above default for 13bar. If machine is 7/8bar, part numbers remain same but internal spring of valves differ. Always verify by machine serial number.
7. GA22 VSD: Confirm internal cabinet structure. 8000hr kit is compatible for machines fitted with 1622001710 scavenge line; motor overhaul kit and inlet valve kit unchanged.
8. Working condition selection suggestion

Normal environment: Remplacer 3 filters every 4000h; full maintenance kit every 8000h

Environnement poussiéreux: Inspect and replace air filter within 2000h

Oil carryover fault: Check oil separator insert 2903087100 + scavenge line 1622001710 + minimum pressure valve kit with priority.

6. Quick Fault-to-Spare Parts Index

High oil content in compressed air: Prioritize oil separator insert 2903087100 + scavenge line 1622001710 + minimum pressure valve kit

High oil temperature & high temp shutdown: Thermostatic valve kit + oil filter + cooler cleaning

Loading malfunction: Inlet valve service kit 2902016100

Poor pressure retention: Minimum pressure valve service kit

Special Valve + Airend Overhaul Kit Details for GA22 (1622001710 scavenge line model)

1. Inlet Valve (Unloading Valve) Service Kit 2902016100

Contents:

1. Main rubber inlet valve diaphragm (aging-prone consumable)
2. Piston assembly and piston spring
3. Full set of O-rings and sealing gaskets
4. Fixing bolts, washers and retaining rings
5. Lubricating grease and service manual

Applicable faults: Insufficient loading, failure to unload, air leakage at shutdown, pressure build-up failure.

2. Minimum Pressure Valve (MPV) Service Kit 2901000100

Contents:

1. Valve core / valve disc assembly
2. Main pressure spring
3. Full set of O-rings, gaskets and retaining rings
4. Non-return sealing components

Fonction: Maintain minimum pressure inside oil separator tank and prevent air backflow from pipeline at shutdown; typical faults: pressure cannot be held, sudden pressure drop on startup.

3. Airend Shaft Seal Service Kit 2901500500 (Airend Oil Seal Kit)

Contents:

1. Main PTFE skeleton oil seal (core component)
2. Dust seal
3. Matching O-rings and static sealing gaskets

For oil leakage at airend output shaft. Does NOT include rotor or bearings, only shaft-end sealing components.

4. Motor Overhaul Kit 2901195200 KIT MOTOR OVERHAUL GA11+22

Contents:

1. Devant & rear motor bearings
2. Motor oil seals and dust sealing rings
3. Special lubricating grease
4. Gaskets and fasteners

Applicable for abnormal motor noise, bearing wear and oil leakage at motor end cover.

5. Non-Return Valve Service Kit 2901107700

Contents:

1. Non-return valve core and valve disc
2. Ressort de rappel
3. O-ring sealing kit

Works with scavenge line to prevent oil-gas backflow, cooperating with 1622001710 scavenge line.

6. Thermostatic Valve Service Kit

Contents:

1. Thermostatic element (temperature sensing component)
2. Full set of O-rings and sealing gaskets

Défauts: High oil temperature / oil carryover at low temperature, thermostat sticking.

7.【Complete Airend Overhaul Kit (Element overhaul kit 2901070900, heavy overhaul)】

This is full airend rotor overhaul kit, different from shaft seal kit, heavy maintenance spare part

Contents:

1. Main bearings and thrust bearings of airend
2. Shaft seal assembly (same as 2901500500)
3. Rotor shim set
4. Full set of sealing gaskets and O-rings
5. Dowel pins and fasteners

Application: Abnormal airend noise, excessive bearing clearance, rotor wear, used for complete airend disassembly overhaul. Coût élevé, purchased only for severely damaged airend.

Guide de sélection rapide

Shaft end oil leakage only: 2901500500 (shaft seal kit)

Loading failure / inlet valve air leakage: 2902016100

Poor pressure retention / air backflow after shutdown: 2901000100 (MPV service kit)

Motor bearing abnormal noise: 2901195200

Airend rotor wear / bearing damage overhaul: 2901070900 Airend rotor overhaul kit