Product description
2.2
Function description
Page 10
BOGE Operating instructions for C 10 L...C 20 L series screw compressors
Technical data for C 10 L...C 20 L compressor assembly, part 2
2.2 Function description
Function principle
of the air end
The air end operates according to the displacement principle. In the housing,
the main and secondary screws are driven by means of an electric motor.
Both screws have screw-shaped profiles, intermeshing without contact.
Together with the housing wall, these screws form chambers which gradually
reduce in size, seen in air flow direction.
Rotation of the rotors causes the air taken in to be compressed to the final
pressure in the chambers.
During compression oil is continuously injected into the air end. This having a
cooling, sealing and lubricating function.
Type
C 10 L
C 15 L
C 20 L
Oil filling quantity
Total oil filling quantity
[gallon]
2.12
2.12
2.12
Oil topping up quantity
between min. + max.
[gallon]
0.264
0.264
0.264
Intake air temperature
– min.
[°F]
+ 41
+ 41
+ 41
– max.
[°F]
+ 104
+ 104
+ 104
Cooling air requirement
– free-standing installation
[cfm]
1765
2825
2825
Operating pressure values
1
)
(factory settings)
1)
Compressors for other operating pressures p
min
= p
max
– 15 psig.
– p
max
= 115 psig: Switch-off press. p
max
[psig]
–
115
–
Switch-on press. p
min
[psig]
–
100
–
– p
max
= 150 psig: Switch-off press. p
max
[psig]
150
–
150
Switch-on press. p
min
[psig]
135
–
135
Safety valve
Activation pressure at:
– p
max
= 115 psig
[psig]
–
160
–
– p
max
= 150 psig
[psig]
160
–
160