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Systems Overview XAS 750 CD
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XA(T,V)S 650-750-850 CD7 Compressors
Scott Ellinger
Committed tosustainable productivity
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Systems Overview XAS 750 CD
Product Designation Oil Injected Compressors
X A T S 750 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 indicator
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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.
Regulating valve service kit 2911 0111 00
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
Opens by intake suction
Control Air closes the inlet
LegendReceiver PressureFrom Pressure Regulator right now very low to zero pressure
Unloading valve service kit – 2911 0110 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 MIN PRESS VALVE
Oil System
Oil System
Air receiver
Oil cooler
Oil filter/TBV
Compressor element
Oil separator
Scavenge line
Compressor element
Oil
Oil
Air/Oil
Lubrication to the bearings
Air inlet
Oil separator
Air/Oil
Centrifugal separation
Separator element
Oil
Scavenge line
Oil Separator filter element should be replacedEvery 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 0112 00
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Oil Filters Remove contamination from compressor oil
–2 filters in parallel–Bypass opens at 36 psi
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Thermostatic Valve
Start of opening Completely open Part number Used in104 °F 140 °F 1619 7560 00 Size 1,5140 °F 167 °F 1202 5869 02149 °F 176 °F 1202 5869 03158 °F 185 °F 1202 5869 01 Size 2, except XRVS167 °F 194 °F 1202 5869 04176°F 203 °F 1615 9720 00 XRVS
Size 1 ½
(XAS 650-750-850)
Size 2
(XAS 1800, XRVS 1000-1350)
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Position of valve & spring = critical! !
Thermostatic Valve
When valve is fitted improperly, oil will be continuously cooled, creating a lot of condensate
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Oil Stop Valve/Check Valve assembly
Oil stop valve and check valve integrated into one assembly
Check valve prevents reverse flow of air
Oil stop valve prevents flooding of oil at shutdown
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Oil Stop Valve
Spring loaded valve
Prevents element from flooding with oil after shut down
Closed by spring force and oil pressure
Opens by discharge air from element
Drain : lowest point of element
Oil from filters
To compressor element
Oil & air mixture
Control System
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Control Panel
XC2002 Status
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XC2002 Menus
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Basic Operations
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Shutdown
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XC2002 Service Timer Reset
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Scroll through the controller menu to “Parameters” (on some units “Parameters” may be a submenu under “Extra Views”)
Press Enter to select Parameters
Scroll to ST1 Reset or ST2 Reset as needed (ST1 = 500 hours, ST2 = 1000 hours)
Press Enter to select to reset the appropriate timer
Prompt for Password: change to 2003 and press Enter
Center option will highlight; scroll to change to “Yes” and press Enter
Service timer is reset
XC2002 Alarms
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XC2002 AlarmsIf an Alarm occurs, a pop-up window will display for as long as the alarm is active, in any view. The flashing red Alarm LED will light up.
The Alarm icon(s) will be shown with an acknowledgement check box. Push the Enter button to acknowledge the alarm. An acknowledged Alarm will mark the check box and light the red Alarm LED.
An Alarm should always be acknowledged before solving the cause of the Alarm.
The Alarm display can be left by pushing the Back button.
If more than one Alarm occurs, the Up and Down arrows may be used to scroll through the list. Newest Alarms will be at the bottom of the list.
If a Shutdown occurs, the Shutdown Display will be shown.
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XC2002 Event Log
XC2002 keeps an event log of the last 15 events.
Shutdowns
Warnings
Service timer resets
Unit type changes
Running hours at time of event logged37
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Engine Faults
Compressor Faults
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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 – XA(T,V)S 650-750-850 CD IT4
Daily:
Check engine oil level
Check compressor oil level
Check coolant level
Drain water from fuel filter
Empty air filter vaccuator valve
Check tire pressure
Maintenance – XA(T,V)S 650-750-850 CD IT4
Initial Service at 50 Hours
Check electrolyte level and terminals of battery
Check for leaks in Air, Oil, and Fuel systems
Check wheel nut torque
Check and adjust brakes
Check and adjust fan belts
Replace compressor oil filters (spin-on)
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Maintenance – XA(T,V)S 650-750-850 CD IT4500 Hour service (typical 6 months)
Perform 50 hour service tasks
Clean oil cooler, radiator, intercooler
Grease door hinges
Grease towing eye shaft or ball coupling and shaft
Analyze coolant
Replace engine oil and filter
Replace fuel primary filter and prefilter
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Maintenance – XA(T,V)S 650-750-850 CD IT41000 Hour service (typical 12 months)
Perform 500 hour service tasks
Test safety valve and shut down switches
Check rubber flexibles
Replace air filters and separator element
Replace compressor oil and filter
Replace bleed off valve unloader
Clean oil stop valve and fuel tank
Replace filter element from regulating valve
Clean flow restrictor in oil scavenge line
Inspection by Atlas Copco service technician
Check/adjust engine valves every 2000 hours or per Caterpillar
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IT4 EXHAUST AFTERTREATMENT
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Tier 4: DOC and DPF
Diesel Oxidation Catalyst (DOC)
Diesel Particulate Filter (DPF)
CEM- Cleaning Emission Module
XC2002 DPF Status Indicators
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Xc2002 – DPF Information
Regeneration functionsRegeneration functions• ParameterParameter
• DPF – Diesel Particulate filter – can DPF – Diesel Particulate filter – can change from AUTO to ON or turn OFF change from AUTO to ON or turn OFF completely (not recommended!)completely (not recommended!)
• STATION REGEN. – Stationary STATION REGEN. – Stationary (manual) Regeneration – OFF or ON(manual) Regeneration – OFF or ON
• Both need to be set to “ON” for manual Both need to be set to “ON” for manual regenerationregeneration
• Both are password protectedBoth are password protected
• Unit will auto regenerate when soot level Unit will auto regenerate when soot level reaches ~70% with unit in auto modereaches ~70% with unit in auto mode
Procedure: Stationary/Forced DPF Regeneration Atlas Copco recommends that the DPF configuration be left in the
AUTO mode at all times however in the event that a stationary or forced regeneration in desired the following process should be followed.
Unit will not auto regenerate until soot level is above 70%– Go to the "STATION REGEN" screen. For normal operation this
should be in OFF mode. Press the enter button (1), a password window will appear.
Enter 1968 and press the enter button. Use the up or down (2) arrow to change the selection to ON
and press the enter button. – Go to the "DPF" screen. For normal operation this should be in
the AUTO mode. Press the enter button (1) Use the up or down (2) arrow to change the selection to ON
and press the enter button.
This will set the unit up for regeneration, after a few moments the regeneration icon should appear confirming the unit is regenerating. – The stationary/forced regeneration can take in excess of 3
hours to complete.
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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.
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