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Chapter 1 - Description
A - General Information
The Chicago Pneumatic Compressors air compressor CPF, CPVS
model, constitute a central compressed air which is fully equipped
and tested, driven by an electric motor and enclosed by a sound-
proof cover, necessary to keep the entire apparatus cool.
The compression element is a single-stage, oil-refrigerated, rotary
screw compressor. The oil is stored in a vertical tank, which is
fitted with an oil separator.
The compression element and the motor are fixed to the frame
using silent blocks.
B - Respect of the environment and
prevention of pollution
1 - Maintenance of the machine
Make sure that the used components of the machine (waste oil,
oil and air filters, oil separators, etc.) are disposed of according
to national and local regulations.
2 - Condensate bleed pipe (optional)
Make sure that the condensates (water, oil) are drained and treated
according to national and local regulations.
3 - Water cooled machines
For this type of machine, when the cooling circuit is made of an
open circuit, a hydrocarbons filter is recommended after passing
through the cooler, particularly for installations located in
ecologically sensitive areas.
4 - End of life of the machine
Make sure that the machine as a whole is disposed of according
to national and local regulations. ( Refer Chapter 7 - M )
C - Standard equipment
In its standard version, the covered unit includes:
- Operating components:
1. A twinned screw-type compressor.
2. An electric motor: 1500 rpm, short-circuit rotor, 460 V
voltage according to the model.
3. Star-Delta starting (or inverter).
4. Gear drive with elastic coupling linking the motor to the
compressor.
5. Air and oil tank in compliance with applicable legislation
ASME.
6. Flow rate control by cut-off of suction.
7. A greasing system using the circuit's differential pressure,
thus avoiding the need for an oil pump.
8. An oil separation system by oil separator filter.
9. A heat evacuation system :
- forced-air ventilation for air-cooled units,
- heat exchanger for water-cooled units.
10. A dry air filter.
11. Oil filters.
12. A command and control electronic board.
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- Safety devices:
1. A safety valve mounted on the oil receiver.
2. An thermal protection device for the motor, situated in the
starting box, to protect the motor from excessive over-load.
3. An air temperature sensor that stops the compressor when
the temperature rises abnormally or during an oil cooling
defect.
- Control devices:
1. A minimum pressure valve located at the oil tank outlet,
just beyond the oil separator, which guarantees minimum
pressure in the lubrication circuit.
2. Automatic draining allowing the unit to be exposed to the
atmosphere when stopping to thus ensure empty start up
which relieves the motor,
3. An oil level indicator situated on the front side of the tank
( see fig. 21).
4. An electronic controller including:
–
a control keyboard,
–
the main safety and control indications.
5. The pressure sensor ensures control over the compressed
air flow.
The CP compressed air unit has been designed, produced and
tested in accordance with the following recommendations, codes
and standards :
- machine safety: European Directive 98/37/CE, 91/368/CEE and
93/68/CEE.
- pressure vessels: European Directive for simple pressure vessels
n° 87/404/CEE.
- electrical equipment:
• electrical equipment: European Directive Low tension
73/23/CEE.
• electromagnetic compatibility European Directive: 89/336/CEE,
92/31/CEE.
- performance levels: ISO 1217 : 1996.
- noise level : PNEUROP PN 8 NT C2.
- European Directive 97/23/EC
" Pressure Equipment Directive ".
D - Definition of the pictograms
Typical examples of pictograms valid for CP compressors:
1. Water outlet
2. Manual condensation water draining
3. Water inlet
4. Automatic condensation water draining
5. Unplug and decompress the compressor
before maintenance
1
2
3
4
E - Electronic board
See the specific instructions for a description of the electronic
controler, together with operating instructions:
Notice N° 62 305 516 99 for version Standard
Notice N° 62 305 517 99 for version CPVS
5
Chicago Pneumatic Compressors
62 305 799 65
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