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XAS 1800 CD7 Compressors

Scott Ellinger

Committed tosustainable productivity

XAS 1800 CD7 IT4 Machine Specifications

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XAS 1800 CD7 IT4 Specifications (cont)

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Systems Overview XAS 1800 CD

Product Designation Oil Injected Compressors

X A S 1800 C D

Product rangeX : Oil injected portable compressor

Working principleA : Single stage compressorR : Two stage compressor

Working pressure

: std pressure 102psiM : 125psiT : 150psiH : 175psiV : 200psi

Silencing : Un-silencedS : Silenced

Capacity (FAD)Liter/secCFM (US-version)

Engine supplierC : CaterpillarD : DeutzJ : John DeereY : YanmarK : Kubota

Prime moverD : diesel engineE : electric motor

Compressor systems

Four major components :

– Air system

– Oil system

– Control system

– Electrical system

Air system

Air filter

Filtration of the inlet air in 3 stages :

– centrifugal dust separation

– paper filter element

– safety cartridge

Vacuum indicator gives an indication when the pressure drop over the filter element is too high filter element needs to be replaced

Air filter

Air inlet Centrifugal separation

Dust

Filter element

to compressor element

Vacuum sensor

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REGULATING SYSTEM REG VALVE

Spring loaded

Adjusting receiver pressureby changing spring tension

• to pressure gauge and loading valve

• to speed regulator• to unloading valve

Regulating pressure:

Receiver pressure

The air receiver pressure can be set to another value by adjusting the spring tension of the regulating valve. This is done by turning the handle on top the valve. Increasing the spring tension, by turning in, will increase the regulating pressure and consequently the pressure inside the vessel. Turning out will decrease the pressure.

In order to regulate the pressure inside the reciever tank of our compressor, the air intake and the engine speed have to be controlled. This is done pneumatically. For that reason, we need regulating pressure. The regulating valve reduces the pressure inside the tank, thus providing the regulating pressure. This regulating pressure is then supplied to the unloader valve and the speed regulator or RPS.

Unloading valve

Opens and closes the air inlet to the compressor element.

– Open position at load condition=> Air consumption

– Closed position at no load condition=> No air consumption.

Control of the valve by regulating pressure.

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Unloading Valve or Air System Inlet Valve

Air intake pneumatically regulated by regulating air at back of piston

Closes by regulating air Opens by vacuum from

element inlet Some air taken in during

unload through calibrated hole in piston

Unloading valve includes blow down valve

Unloading valve service kit – 2911 0169 00

No-Load Condition Load Condition

Unloading valve Regulating valve Regulating valve

Load solenoidMin Press valve

Unloading valve

Load solenoidMin Press valve

Unload Condition Blow- Down Condition

Regulating valve Regulating valveUnloading valveUnloading valve

Min Press valve Load solenoid Min Press valve Load solenoid

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Maintains a minimum pressure

of 58 PSI for oil flow

Also contains the final check

valve

AIR SYSTEM MINIMUM PRESSURE VALVE

Oil System

Oil System

Air receiver

Oil cooler

Oil filter/TBV

Compressor element

Oil separator

Scavenge line

Oil stop valve

Oil separator

Air/Oil

Centrifugal separation

Separator element

Oil

Scavenge line

Oil Separator filter element should be replaced

Every 1,000 hours or yearly.

Oil Separator

Classic Reasons For Oil Carryover– Over filled receiver

– Plugged scavenge line

– Wrong type of oil (no anti foam agent)

– Shut down with air outlet valves open

– Scavenge tube installed improperly

Separator Element Service Kit – 2911 0169 00

Checking compressor oil level

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With compressor turned off and level, check the oil level in the receiver tank

The pointer of the oil level gauge should read at the top edge of the green range

Be sure to relieve all air pressure by opening an air outlet valve before removing the oil filler plug

Output pressure adjustment

Be careful not to touch hot parts when the machine doors are open

Loosen the lock nut on the regulating valve

Release regulating valve

With outlet valves closed, adjust the regulating valve until the pressure is 29 PSI above the nominal pressure desired

Lock the regulating valve by tightening the lock nut

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Control System

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Type of controllers

Xc 3003– Is replacing the former S2 controller

– No oiltronix, no airXpert

– AC Part number: 1626 6000 00

Xc 4003– Is replacing the former S2 Drillair controller

– Including the Oiltronix and or AirXpert modules

– AC Partnumber Oiltronix: 1626 6002 00

– AC Part number Oiltronix + AirXpert: 1626 6004 00

Electrical System

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Wiring Diagram (1)

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Wiring Diagram (2)

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Maintenance

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Maintenance – XAS 1800 CD IT4

Daily:

Drain water from fuel filter

Drain condensate and water from frame or catch basin

Empty air filter vacuator valves

Check engine and compressor oil levels

Check coolant level and operation of coolant heater (if equipped)

Check/fill fuel

Check control panel

Check electrical system cables for wear or damage

Check any abnormal noises

Maintenance – XAS 1800 CD IT4

Initial Service at 50 Hours

Check for leaks in engine, compressor, air, oil, and fuel systems

Check torque on critical bolt connections

Check electrolyte levels and terminals of batteries

Check engine minimum and maximum speeds

Replace compressor oil filters

Inspect/adjust fan belt

Atlas Copco recommends an oil sample/analysis be done every 250 hours.

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Maintenance – XAS 1800 CD IT4500 Hour service

Check for leaks in engine, compressor, air, oil, fuel systems

Check electrolyte levels and terminals of batteries

Check engine minimum and maximum speeds

Replace fan belt

Drain/clean fuel tank water/sediment

Inspect/replace hoses and clamps

Replace engine oil, filter, fuel filters

Clean flow restrictor in oil scavenge line

Clean oil coolers, radiator, intercooler, aftercooler (if equipped)

Inspect starter, turbo, water pump, engine protection

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Maintenance – XAS 1800 CD IT41000 Hour service

Perform 500 hour service tasks

Check torque on critical bolt connections

Check function of regulating valve and safety valve

Replace bleed-off valve unloader

Check rubber flexibles

Replace DD/PD/QD filters (if equipped)

Clean oil stop valve

Change compressor oil

Clean fuel cooler

Clean crankcase breather filter

Replace air filter elements

Check external fuel connections

Inspection by an Atlas Copco service technician

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Maintenance – XAS 1800 CD IT42000 hour service

Perform 1000 hour service tasks

Adjust engine inlet and outlet valves

Inspect alternator

Replace spring check valve

Replace crankcase breather filter

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Contact Numbers

•Main Number Atlas Copco Technical Support 800-732-6762 Option 3

•Ed Kukfisz – Compressors – Supervisor 281-542-2562 direct & 832-385-4697 mobile

•Andrew Stevenson – Compressors: Low Pressure720-479-2486 direct & 404-751-6717 mobile

•Andrew Calendar – Compressors: High Pressure720-479-2487 direct & 404-242-6203 mobile

•Scott Ellinger – Compressors720-479-2476 direct & 720-375-1795 mobile

•Robert Walsh – Generators – Supervisor 803-487-0256 direct (mobile)

•Will Hudson – Generators/Compressors 800-732-6762 Ext. 12920 & 832-454-8123 mobile

•Brandon Hobbs – Hydraulic Attachments /Handheld Construction Tools – Supervisor 303-287-8822 direct & 913-424-4039 mobile

•Al Eckenfels – Hydraulic Attachments/Handheld Construction Tools800-760-4049

Committed tosustainable productivity.