Atlas Copco GA 11 VSD, Инструкция

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Text on drawings
(1) Ventilation proposals
(2) Minimum free area to be reserved for the compressor installation
(3) Compressor
(4) Front
(5) Top view
Description
1. Install the compressor unit on a solid, level floor suitable for taking the weight. The
recommended minimum distance between the top of the unit and the ceiling is 900 mm (35
in). The air receiver must not be bolted to the floor. The minimum distance between the wall
and the back of the compressor must be 150 mm (5.9 in).
2. Position of the compressed air outlet valve.
Close the valve.
Connect to the air net.
3. The pressure drop over the air delivery pipe can be calculated as follows:
Δp = (L x 450 x Q
c
1.85
) / (d
5
x P), with
d = Inner diameter of the pipe in mm
Δp = Pressure drop in bar (recommended maximum: 0.1 bar (1.5 psi))
L = Length of the pipe in m
P = Absolute pressure at the compressor outlet in bar
Q
c
= Free air delivery of the compressor in l/s
4. Ventilation: the inlet grids and ventilation fan should be installed in such a way that any
recirculation of cooling air to the compressor or dryer is avoided. The maximum air velocity
through the grids is 5 m/s (16.5 ft/s).
The maximum allowable pressure drop over the cooling air ducts is 30 Pa (0.12 in wc)
If it is greater than this value, a fan is needed at the outlet of the ducts. Consult Atlas Copco.
For alternatives 1 and 3, the required ventilation capacity to limit the compressor
room temperature can be calculated as follows:
• Q
v
= 1.16 N/ΔT for units without optional dryer
Q
v
= Required ventilation capacity in m
3
/s
N = Shaft input of compressor in kW
ΔT = Temperature increase in the compressor room in °C
For alternatives 2 and 4: the fan capacity should match the compressor fan capacity at a
pressure head equal to the pressure drop across the air ducts.
5. The drain pipes to the drain collector must not dip into the water of the drain collector. Atlas
Copco has oil/water separators (type OSD) to separate the major part of the oil from the
condensate to ensure that the condensate meets the requirements of the environmental
codes.
6. Position of control panel.
7. Mains cable.
• To preserve the protection degree of the electric cubicle and to protect its components
from dust from the environment, it is mandatory to use a proper cable gland when
connecting the supply cable to the compressor.
• Always disconnect the power supply before working on the electrical circuit!
Instruction book
API161475 47