Instruction Manual
W32- Series Medium-Vertical Compressors
Page I - 6.
I – 5. P&I (Process & Instrument) Diagram
The following process and instrument diagrams are
prepared with the drawing of the physical components
rather than pneumatic symbols, in order to facilitate the
understanding of the system by users who are not
specifically trained to understand pneumatic symbols.
Some compressors are designed to operate at a “
single
pressure
” (see P & I diagram
drwg#7862-1
). This is,
when the compressed air is used to fill all the cylinders to
that single pressure. On some other systems there
might be different cylinders that need to be filled to
two different pressures. For instance some cylinders
are filled to 3200 psi, and others to 4500 psi. In
such applications “
dual pressure
” controls are used
to operate the compressors to the selected pressure
between the two available set pressures see P & I
diagram
drwg#7862-2
).
The following P & I diagram refers to a compressor that operates at single pressure
0
0
0
0
400
400
400
400
bar
bar
bar
bar
100
300
200
400
0
P
A
R
6014
C
ALKIN
COMPRESSORS®
Menderes-IZMIR-TURKEY
TEL: 0090 232 78 222 90
FAX: 0090 232 78 222 89
Application Field
Drawing Number
Title
Page
Pg.
Edited
Date
Date
Name
Name
Check
Norm
1
1
Modification
Material
Surface
Scale
Weight
Resp.
13.07.2002
R/K
W32 SERIES 3 STAGES
BREATHING AIR COMPRESSORS
SINGLE PRESSURE P&I DIAGRAM
7862-1
A
NEXT ASS'Y
Oil
1st stg.
2nd stg. 3rd stg.
Minimum
Pressure Pressure Pressure Pressure
Pressure
Pressure Switch
Gage
Gage
Gage
Gage
Valve
Gage
1st stg.
2nd stg.
IC (2-3)
AC
3rd stg.
Oil Pump
Oil Pump
2nd stg.
3rd stg.
3rd stg.
IC(1-2)
Particle
Condansate
IC (1-2) : 1st stg.-2nd stg intercooler
IC (2-3) : 2nd stg.-3rd stg intercooler
AC
: Aftercooler
Condansate
Check
Drain Pilot
Drain
Drain
Purifier
Safety
Priority
Filling
Safety
Safety
Removal
Separator
Collector Tank
Valve
Solenoid
Yoke
Valve
Valve
Valve
Valve
Valve
Valve
Filter
7702
www.alkincompressors.com
Fig. 3 P&I diagram (single pressure)
