Operation - Pepperl+Fuchs Bebco EPS 5500 Series User Manual

3.2. Operation

Operating the System
1.
Follow the preceding instructions for setting up the system.
2.
For Flush Programs 1 through 4 (hazardous gas environments), purging is required.
a. Seal the pressurized enclosure.
b. Set enclosure pressure to a value above P1.
c. When using the 5500-MAN... manifold, the manifold valve is connected to the
d. Adjust the regulated pressure so that enclosure pressure is above
e. For the 5500-MAN manifold, after purging, the needle valve can be re-adjusted
3.
For Flush Program 5 (hazardous dust environment), purging is not required.
a. The inside of the enclosure must be cleaned of all combustible dust.
b. The enclosure is sealed.
c. Adjust the enclosure pressure above P1. The minimum for P1 is 0.65 in wc
4.
If enclosure pressure is above P1, power to the enclosure will be energized.
5.
If enclosure pressure drops below P1, power must be disconnected. If power is to
remain on, an alarm must be initiated and located near an operator.
6.
To energize the pressurized enclosure again, repeat the above sequence.
DANGer!
All 5500 pressurization systems require ePV-5500... vents for pressure relief.
SV output. When the enclosure pressure is greater than P1, SV energizes the
solenoid valve for purging. For manual or other valves, initiate the purging valve.
P3 (purging starts).
to the user's desire, but it must be above the P1 value.
(1.6 mbar) for hazardous dust environments.
5500 S M  i
erieS anual nSTallaTion and
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PeraTion
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