Section III - Installation
14
Quincy Compressor
1
Dryer service panel
5
Condensate drain
2
Service panel
6
Manual drain
3
Supply cable
7
Automatic drain
4
Minimum area to be reserved for ser
-
vicing purposes
Recommendations
1. Install the compressor on a level horizontal industrial floor, suitable for taking the
weight of the compressor. The location must be frost-free and preferably low dust
location. The compressor unit must be installed on a level floor.
2. Delivery pipe. The pressure drop in the delivery pipe can be calculated from:
Δ
p = (L x 450 x Q
C
1.85
) / (d
5
x P), with
d = inner diameter of the pipe in mm
Δ
p = 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
Qc = free air delivery of the compressor in l/s
3. Ventilation: the inlet grids and ventilation fan should be installed in such a way that
any recirculation of cooling air to the compressor 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). The maximum air temperature
at the compressor intake opening is 40 ˚C (104 ˚F).
Take care that the temperature of the ambient air and the cooling air may never be
lower than 0 °C (32 °F) to avoid freezing of condensate.
The required ventilation capacity to limit the compressor room temperature can be
calculated from:
• Q
V
= 1.06 N/
Δ
t for compressors without integrated dryer.
• Q
V
= (1.06 N + 0.2)/
Δ
t for compressors with integrated dryer.
with
Q
V
= required ventilation capacity in m
3
/s
N = shaft input of the compressor in kW
Δ
t = temperature increase in the compressor room in °C
4. Air receiver: an optional air receiver can be necessary to limit the cycle frequency.
Recommended maximum is 20 starts per hour.
5.
Optional filters can be installed in the pressure line downstream the air outlet valve,
e.g.:
• A DD
+
filter for general purpose filtration. The filter traps solid particles down to 1
micron.
• A PD
+
filter for filtration down to 0.01 micron. A PD filter must always be installed
downstream a DD filter.
6. Control cubicle with monitoring panel.
7. Compressor and dryer cooling air outlet
