EQUIPMENT DESCRIPTION
NP-eVENT-16_10-2018 7
2. EQUIPMENT DESCRIPTION
1. PRESSURE - output air pressure gauge (accuracy ± 5%)
2. HUMIDITY - humidity indicator (performance)
3. Cooling failure indicator
4. Power indicator
5. Hour meter
6. Main input, power switch, primary fuses
7. Equipotential (ground) pin
8. Socket for the electrical cord
9. WALL - inlet air coming from an outside compressed air source
10. OUT - output air from compressor
11. Air tank
12. Suction filter
13. Pressure regulator with filter
14. Filter and water trap
15. Cooler
16. Control electronics
17. Safety valve
18. Internal back cover
19. Tube for supporting equipment
The equipment consists of an oil-free piston compressor driven by a single-
phase electric motor, filtering and drying equipment, an air tank and a
pressure regulator. The compressor is placed in a box lined with noise
absorbing insulation. The equipment produces filtered compressed air
without any traces of oil with reduced water content (dry air).
The air compressor has an input air connector labeled WALL (9) that allows
the connection of an outside air source. When an outside compressed air
source is connected to the WALL inlet fitting supplies air above the adjusted
output pressure, the compressor will not be activated even though the power
switch is in the ON position. Instead, the air from the outside source will be
directed to the compressor's air output. When the outside air source pressure
is less than the adjusted output pressure (or is not connected) and the power
switch is in the ON position, the compressor is activated and supplies
compressed air through the air output.
The compressor pulls in atmospheric air through the suction filter (12).
Compressed air is cooled in the cooler (15), continues to the filter (14) and
condensed liquid from the water trap is automatically released to the
evaporation tray. The air continues through the check valve to the air tank
(11) and through the pressure regulator with the output filter (13) to the OUT
connector (10). Fans operate during compressor operation and when not
operating when the temperature in the cabinet is over 40°C (104°F). If the
temperature in the cabinet is over 80°C (176°F), a cooling failure is signaled
by the red indicator (3) and an acoustic alarm. Control electronics (16) control
compressor operation based on the pressure in the air tank (11). A safety
valve (17) ensure the maximum allowed tank pressure is not exceeded.
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