1. XAS 1800 CD7 Compressors Committed to sustainable productivity
Scott Ellinger
Committed to sustainable productivity

2. XAS 1800 CD7 IT4 Machine Specifications

3. XAS 1800 CD7 IT4 Specifications (cont)

4. Systems Overview XAS 1800 CD

5. Product Designation Oil Injected Compressors
Engine supplier
C : Caterpillar
D : Deutz
J : John Deere
Y : Yanmar
K : Kubota
Working principle
A : Single stage compressor
R : Two stage compressor
Product range
X : Oil injected
portable compressor
Silencing
: Un-silenced
S : Silenced
Prime mover
D : diesel engine
E : electric motor X A S
1800 C D
Capacity (FAD)
Liter/sec CFM (US-version)
Working pressure
: std pressure psi
M : psi
T : psi
H : psi
V : psi

6. Compressor systems Air system Oil system Control system
Four major components :
Air system
Oil system
Control system
Electrical system

7. Air system
The following slides explain how the regulating system of the XA(H)S works. They will give you an overview of the different parts and their function.

8. Air filter centrifugal dust separation paper filter element
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

9. Air filter Centrifugal separation Air inlet Vacuum sensor
Filter element
Dust
to compressor element

10. REGULATING SYSTEM REG VALVE
Spring loaded
Adjusting receiver pressure
by changing spring tension
to pressure gauge and loading valve
to speed regulator
to unloading valve
Regulating pressure:
Receiver 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.
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.

11. Unloading valve Open position at load condition => Air consumption
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.

12. 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 –

13. No-Load Condition Load Condition
Unloading valve
Regulating valve
Unloading valve
Regulating valve
Min Press valve
Load solenoid
Min Press valve
Load solenoid

14. Unload Condition Blow- Down Condition
Unloading valve
Regulating valve
Unloading valve
Regulating valve
Min Press valve
Load solenoid
Min Press valve
Load solenoid

15. AIR SYSTEM MINIMUM PRESSURE VALVE
Maintains a minimum pressure
of 58 PSI for oil flow
Also contains the final check
valve

16. Oil System
The following slides explain how the regulating system of the XA(H)S works. They will give you an overview of the different parts and their function.

17. Oil System Air receiver Oil cooler Oil filter/TBV Compressor element
Oil separator
Scavenge line
Oil stop valve
The following slides explain how the regulating system of the XA(H)S works. They will give you an overview of the different parts and their function.

18. Oil separator Scavenge line Separator element Centrifugal separation
Oil Separator filter element should be replaced
Every 1,000 hours or yearly.
Centrifugal separation
Oil
Air/Oil

19. Oil Separator Separator Element Service Kit – 2911 0169 00
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 –

20. Checking compressor oil level
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

21. 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

22. Control System

23. Type of controllers
Xc 3003
Is replacing the former S2 controller
No oiltronix, no airXpert
AC Part number:
Xc 4003
Is replacing the former S2 Drillair controller
Including the Oiltronix and or AirXpert modules
AC Partnumber Oiltronix:
AC Part number Oiltronix + AirXpert:

24. Electrical System

25. Wiring Diagram (1)

26. Wiring Diagram (2)

27. Maintenance

28. 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

29. 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.

30. Maintenance – XAS 1800 CD IT4 500 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

31. Maintenance – XAS 1800 CD IT4 1000 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

32. Maintenance – XAS 1800 CD IT4 2000 hour service
Perform 1000 hour service tasks
Adjust engine inlet and outlet valves
Inspect alternator
Replace spring check valve
Replace crankcase breather filter

33. Contact Numbers Main Number Atlas Copco Technical Support
Option 3
Ed Kukfisz – Compressors – Supervisor
direct & mobile
Andrew Stevenson – Compressors: Low Pressure
direct & mobile
Andrew Calendar – Compressors: High Pressure
direct & mobile
Scott Ellinger – Compressors
direct & mobile
Robert Walsh – Generators – Supervisor
direct (mobile)
Will Hudson – Generators/Compressors
Ext & mobile
Brandon Hobbs – Hydraulic Attachments /Handheld Construction Tools – Supervisor
direct & mobile
Al Eckenfels – Hydraulic Attachments/Handheld Construction Tools

34. Committed to sustainable productivity.