XAS185 CD7 Compressors 1. Scott Ellinger.
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Transcript of XAS185 CD7 Compressors 1. Scott Ellinger.
XAS185 CD7 Compressors
Scott Ellinger
PRODUCT FEATURES
Hard Hat VersionMade from polyethylene material that does not dent or rust
Removable side and end panels for easy service
Rear mounted controls and discharge valves
The only metal part is the front baffle
Standard VersionSteel construction
Removable side and end panels for easy service
Same rear mounted control panel
Product nomination and grouping Principle data Compressor systems:
Compressor running conditions:
Electrical system Instrument panel
XAS 185 CD7
Air systemOil systemRegulating systemElectrical system
UnloadLoadBlow-down
Product Nomination Oil Injected CompressorsNomination and
grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
X A S 185 C d
Product rangeX : Oil injected portable compressor
Working principleA : Single stage compressorR : Two stage compressor
Working pressure
: standard pressure 102psiT : “ten” pressure 150psiH : high pressure 175psi
Silencing : Un-silencedS : Silenced
Capacity (FAD)Liter/secCFM (US-version)
Engine supplierC : CaterpillarD : DeutzJ : John DeereY : YanmarK : Kabota
Prime moverd : diesel engineE : electric motor
Principle DataNomination and
grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Principle DataNomination and
grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Compressor Systems
4 major systems Air system Oil system Regulating system Electrical system
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Air system
Air System
Air filter
Unloading valve
Compressor element
Check valve
Air receiver
Minimum pressure nozzle
Air outlet valve
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Air Filter
Air inlet Centrifugal separation
Dust
Filter element
to compressor element
Vacuum indicator1310 0348 91
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Air Filter
Filtration of the inlet air in 2 stages :– Centrifugal dust separation– Paper filter element– Optional safety element– Air filter vacuum indicator
– Safety Filter XAS 185 1310 0343 81 Comp1310 0303 10 Eng
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.
Valve is controlled by the regulating pressure.
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Unloading Valve
Valve
Spring loaded
Regulating pressure Air inlet
Integrated blow-down valve
Vent Hole
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Compressor Element
Oil
Oil
Air/Oil
Air inlet
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Check Valve
Check valve is integrated in the unloader for Series 7 compressors.
Closed when the compressor is stopped.
The air receiver is pressurized, which would result in a reverse air flow. the check valve prevents this.
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Check Valve
LOAD
Check valve
SHUT-DOWN
Receiver pressureWhen compressor is shut-
down
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Valve Part # 1615 7667 82
Air Receiver
Air/Oil
Centrifugal Separation
Air outlet
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
SeparatorElement
Minimum Pressure Nozzle
Guarantees a minimum pressure in the receiver tank (approx. 45 – 60 psi)
Minimum pressure is required to guarantee a continuous oil supply to the element.
NOZZLE
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
OIL SYSTEM
Oil System (old style)
Air receiver
Oil cooler
Oil filter
Compressor element
Oil separator
Scavenge line
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Oil System (new style with TBV)
Air receiver
Oil cooler
Oil filter/TBV
Compressor element
Oil separator
Scavenge line
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Air Receiver
Oil flow
Pressure
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Oil Cooler
Warm Oil
Cooling air
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Cool Oil
Oil Temp Should Have A 40 F (22C) Drop Through The Cooler
* Use Proper Oil and Filters
º
Oil Filter
Dirty Oil Filtered Oil
By-pass valve
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Part # 2914 5050 00
By pass valve opens at 36psi
Ensures sufficient lubrication and cooling even if the filter gets clogged
Compressor Element
Oil Air/Oil
Lubrication to the bearingsAir inlet
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Scavenged oil
Oil Separator & Scavenge Line
Air/Oil
Centrifugal separation
Separator Element
Oil
Scavenge line
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
When changing the separator element the retainer must be cleaned
Also works as ground
•Centrifugal force removes about 85% of the oil
•Change of direction, about 99% of the oil
•Separator element, less than 3 ppm oil content
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 Part Number 2911 0068 00
REGULATING SYSTEM
Regulating System
Regulating valve
Unloading valve
Speed regulator
Blow-down valve
Safety valve
Regulating Valve
Unloading Valve
Speed RegulatorSafety Valve
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Regulating Valve
Regulates the effective pressure in the air receiver
Provides regulating pressure to :– unloading valve
=> regulates the air inlet according the air requirements
– speed regulator=> regulates the engine speed to reduce fuel consumption
Regulating Valve Part Number 1615 7664 80
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Regulating Valve
LOAD UNLOAD
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Receiver Pressure
Pressure Gauge
Adjusts Unload Pressure:
*with outlet valve closed to 115psi Control
Pressure
To speed regTo unloading valveTo blow down
valveScavenge line
Unloading Valve
Opens and closes the air inlet to the compressor element.– Open position when running loaded
=> Air requirements– Closed position at no load condition
=> No air requirements
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Unloading Valve
LOADUNLOAD
Reg
ulat
ed p
ress
ure
Air inlet
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Air Inlet
Unloading Valve – Cut Away
Speed Regulator
Regulates the engine speed in relation to the required air flow
Unit will adjust the engine speed to match air demand
Load condition : maximum engine speed
Unload condition : minimum engine speed (Idle Speed)
Speed Regulator Actuator part number 1310 0305 73
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Speed RegulatorNomination and
grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Orifice
Control air
Speed regulator extends to provide maximum throttleRetracts under no load to reduce throttle and save fuel
Blow Down Valve
Integrated in the unloading valve
Blows off the air receiver pressure once the compressor has shut-down=> this is to depressurize the receiver tank
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Blow Down Valve
LOAD / UNLOAD BLOW-DOWN
Blow-off receiver pressure
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Receiver PressureReceiver pressure
blow-down valve
Safety Valve
Protects the compressor and engine.
Blows off the air receiver pressure when it exceeds the preset value.
XAS 185 CD - 150 PSI
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Compressor Running Conditions
Major running conditions :
– UNLOADReceiver tank pressurized, no air being used
– LOADReceiver tank pressurized, air is being used
– BLOW-DOWNMachine stopped, blow-off of receiver pressure
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Electrical System
Electrical System
12 Volts Dc Alternator has built in voltage regulator
– B+ Positive to recharge battery– B- Ground– W Frequency for tachometer (if equipped)– D+ Ground when alternator is turning less than
650RPM12 Volts when turning more than 650RPM
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Electrical System
Starting system– cuts-out starter motor when engine is running
Safety shut-downs– Compressor :
Compressor element outlet temperature (248ºF/120 C)– Engine :
Coolant temperature (221ºF/105 C) Oil pressure (17psi) Low fuel level (5%) Alternator not charging Fail safe as a loose wire will result in a shut-down
Good electrical contacts are important
Nomination and grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Electrical System / Std UnitNomination and
grouping Principle data Compressor systems Running conditions Electrical system Instrument panel
Control Panel
Comp Temp LampGeneral Alarm Lamp
Ignition Switch
Control panel isMounted at therear of the unit
More visible and user friendly
Control Panel
Fuel GageWorking
Pressure Compressor
temp
General alarm
Ignition Switch
Hour Meter
Test /
Cold Start
10 AMP Circuit Breaker Behind Control Panel
Service Kits
XAS 185 CD
Kit number Designation– 2911 0051 00 Unloader– 0665 0999 54 Piston Seal– 2911 0068 00 Oil separator
Preventive Maintenance Kits
MaintenanceDAILY Check engine oil level
Check compressor oil level
Check air filter vacuum indicator
Empty air filter dust trap
Maintenance
50 HOURS
Check battery terminals and charge
Check tire pressure / re-torque wheel lug nuts
Check drawbar bolts
Check for leaks in the air, fuel, and oil system
Check engine minimum / maximum speeds
Lubricate door hinges / locks / etc.
Maintenance
250 HOURS Perform 50 hour maintenance plus:
Change engine oil and filter Clean the oil cooler / radiator Clean fuel tank
Change fuel filters
Maintenance
500 Hours/Annually
Perform the 250 hour maintenance plus:
Change compressor oil and filter
Replace the air filter elements
Maintenance
1000 Hours/Annually Perform 500 hour maintenance plus:
Adjust valves on engine
Replace Air oil separator Test safety valve
Test operation of engine and compressor safety switches and relays
Repack or Grease wheel bearings
Special Torque values
Wheel nuts 59 lb.ft (+7-0) Axle - beams 59 lb.ft (+/-7)Drawbar - axle 59 lb.ft (+/-7)Drawbar - bottom 59 lb.ft (+/-7)Towing eye - drawbar 59 lb.ft (+/-7)Lifting eye - flywheel housing 151 lb.ft (+15/-0)Engine - drive housing (M12) 59 lb.ft (+/-7)Engine - drive housing (M14) 92 lb.ft (+/-7)Compressor - drive housing 59 lb.ft (+/-4)Safety switches 26 lb.ft (+/-4)
61
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.