For Dust Atmospheres; Setting Up The System - Pepperl+Fuchs Bebco EPS 5500 Series User Manual

5500 S M  i
erieS anual nSTallaTion and
3.1.2

For Dust Atmospheres

If the protective enclosure has been opened or has been subjected to the hazardous
atmosphere, the enclosure must be manually cleaned of all combustible dust, closed,
and pressurized before supplying power to the enclosure. For dust atmospheres, a
higher pressure is required for pressurization and is reflected in the pressure range
within the 5500 programming setup.
3.1.3

Setting up the System

Instructions
1.
Ensure that the system meets all electrical, mechanical, and pneumatic connections
before operation. Refer to this manual and standards for explanation of requirements.
2.
Apply power to the 5500 Series system.
3.
Program the 5500 Series system using the user interface display on the front of the
5500 control unit. See Chapter 4 for programming instructions.
Note
This step is for initial setup of the 5500 system. This procedure can be skipped if the
5500 control unit has been programmed for the application in which it will be used.
4.
Make sure the control valve is closed before applying pressure to the system.
5.
Use a regulated pressure source to the valve. Set the regulated pressure to 30 psig
(2 bar) or lower. Do not exceed the maximum pressure for the valve and tubing used
in the setup.
6.
The pressure should be below 0.1 in wc (0.25 mbar). Slowly open the needle valve on
the control valve system so that the pressure is above P1. If one of the 5500-MAN...
manifolds is being used, the solenoid valve will energize for purging above P1.
7.
Check the EPV vent to make sure air is coming out of it. If not, check for any
obstructions or improper installation.
8.
The system is ready to operate.
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