- Contact Person : Ms. Huang Cindy
- Company Name : Shanghai Electrical Machinery Group Import And Export Co., Ltd.
- Tel : 86-21-63090848
- Fax : 86-21-63090548
- Address : Shanghai,Shanghai,Room 1012-1013,No 1717,Sichuan(N)Road,Shanghai,China
- Country/Region : China
- Zip : 200080
Screw air compressor GA 11+ -30
Screw compressor GA 11+ -30
Air system:
Air intake filter
Heavy duty, dry type air inlet filter.
Premium filtration efficiency: 99.9% for particles above 3 micron
Air intake valve
Aluminum check valve that closes the inlet when the compressor stops
Compression element
State of the art compression element using the high efficiency rotor profiles
Non return valve
Cast iron check valve to prevent back flow into the compression element
Air/oil separator vessel and oil separator
The welded oil vessel separates the oil from the compressed air. Immediately downstream the oil vessel an ultra fine oil separator filter is mounted to limit the oil consumption and increase the running time.
Minimum pressure valve
Cast iron check valve that opens at 4 barg. It prevents blow back into the oil vessel and maintains oil pressure for reliable operation.
Aftercooler
Aluminum block type air aftercooler to cool the compressed air.
Water separator
The water separator removes the condensate from the air. The condensate is discharged by a mechanical float type drain valve.
Lubrication system:
Lube oil
Atlas Copco’s lube oils are tested for extreme conditions and explicitly qualified for high performance and long lifetime expectations.
Oil cooler
Aluminum block type air - oil cooler. The coolers remove the heat generated in the oil during the compression and to optimize the element temperature for efficient operation.
Thermostatic bypass valve
A cast iron valve integrated in the oil filter housing to assure that the compressor reaches its optimal temperature immediately after start-up.
Oil filter
An oil filter is screwed onto the thermostatic valve housing. The oil filter cleans the oil continuously from particles bigger than 30 micron in order to protect the lubrication quality and health of the rotating components.
Drive system
The GA 15 -22 compressors are driven by Siemens TEFC, IP 55 squirrel cage induction motors. The motors boost the efficiency of the compressor package, they are rated according to the efficiency 1 standard (50Hz) or the NEMA Epact standard (60Hz).
Control system
GA 15 -22 compressors are equipped with a control cubicle containing:
¢ Fan motor overload relay(s)
¢ Motor star-delta starter with overload relay
¢ Transformers
¢ Plexiglass screen protection (in case copper bars are exposed)
¢ Start-stop button and isolator switch
¢ Elektronikon control, regulation, safety and indication panel
¢ All wiring
Regulation System
GA 15 -22 compressors are equipped with the power conscious, efficient, automatic full-load / no-load regulation system.
The Elektronikon regulation is equipped with the delayed second stop feature (DSS) for the main motor which significantly cuts the energy costs.
Elektronikon regulator module
The regulating system includes the Elektronikon module to regulate, control and monitor compressor operation. All GA 15 -22 series Elektronikon control modules display and monitor the following:
1. Compressor Status Indication
¢ Voltage on
¢ Automatic operation
¢ Compressor loaded
¢ Compressor unloaded
2. Temperature, numerical readouts
¢ Delivery air
3. Pressure, numerical readouts
¢ Delivery air
4. Compressor Control
¢ Start / Stop
¢ Load / unload
¢ Emergency stop
¢ Reset / Test
5. Hourmeters
¢ Total running hours
¢ Total loading hours
6. Compressor safety - warning indications
¢ High element outlet temp.
¢ Service needed
¢ Sensor error
7. Compressor safety - shutdown indications
¢ High element outlet temp.
¢ Drive motor overload
¢ Emergency stop
8. Digital output relais for remote monitoring (voltage free)
¢ Automatic operation / Manual operation
¢ General warning
¢ General shutdown
Screw air compressor GA 11+ -30