Empire Abrasive Equipment Company
1.6 Compressed Air Connection
IMPORTANT
To operate properly, your ProFormer
TM
system requires clean, dry air. Moisture
or oil in the compressed air supply can contaminate the abrasive, which can
prevent it from flowing freely and cause inefficient blasting. Though your
system is equipped with a general-purpose filter to remove small amounts of
condensed water and oil from compressed air supply, this filter is not designed
to clean grossly contaminated air.
Step 1:
Using the following two charts, determine the proper air volume needed for
your ProFormer
™
system.
Step 2:
The volume of air required for efficient operation of your system depends on
the size of the nozzle you are using and the desired blast pressure. The chart lists the
minimum air requirements in SCFM for various nozzles and pressures.
AIR REQUIREMENTS (SCFM) FOR SUCTION BLAST
40 psi
60 psi
80 psi
100 psi
¼” nozzle, 1/8” air jet
12
17
21
26
5/16” nozzle*, 5/32” air jet
19
27
34
42
3/8” nozzle, 3/16” air jet
29
39
50
62
7/16” nozzle, 7/32” air jet
38
52
66
80
AIR REQUIREMENTS (SCFM) FOR PRESSURE BLAST
40 psi
60 psi
80 psi
100 psi
1/8” nozzle
10
14
17
20
3/16” nozzle*
22
30
38
45
¼” nozzle†
41
54
68
81
* Standard nozzle
† 3/4” blast hose option is recommended to reduce blast hose wear.
Step 3:
Use the chart below as a guide to determine the size of the compressed air line
needed for your ProFormer
™
system. Even when there is sufficient compressed air
available, the supply air line to the system must be large enough to prevent friction
losses that create pressure drops which will reduce blast pressure and efficiency.
Step 4:
The customer is to provide and install an air supply shut off valve. This
should be a three-way valve that will bleed off all trapped down stream compressed air
from the cabinet. The valve must also be able to be locked when closed.
Line Size (in)
Length of Air Line (ft)
Air Volume (SCFM)
¾
Up to 95
13 to 38
1
95 to 190
38 to 59
1-1/4
190 to 350
59 to 85
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