IECEx (Zone 2 and 22 purging system
installation)
GasEye Cross Duct
Operating instructions, 05/2021
239
Figure 223. Grounding terminals central unit Single Gas.
13. Close both GasEye and purging system enclosures. Make sure that all of the
system glands are well sealed.
14. Make sure that the gas source is NOT connected into 6 mm gas input, before
next step.
15. Make sure the system 24VDC power cable (8) wires are isolated and not
directly exposed in the hazardous zone.
16. Energize the purging controller (5) by connecting external power supply
(24VDC / 1.5A) into supply cable (8).
17. Get into parameters menu on purging controller by holding “SET” button and
enter the password “0000” by pushing “SET” button. Make sure that
corresponding parameters on purging controller menu are set as follows before
executing next step:
-
P1 pressure: 0.7 mbar / 0.3 in/H2O
-
P2 pressure: 1.3 mbar / 0.52 in/H2O
-
P3 pressure: 2.0 mbar / 0.8 in/H2O
-
P4 pressure: 10 mbar / 4.0 in/H2O
-
Leakage HYST: 0.5 mbar / 0.2 in/H2O
-
Purging Time: 7 min
-
Purge Program: Program 3
-
Other parameters: default
18. Set the “working” state on the purging controller menu by holding the “SET”
button. “On work!” text will be visible on the display. After that, the display will
show actual pressure difference between enclosure and ambience air.
19. Connect the purging gas source (with regulated pressure) into 6 mm gas input
pipe (12) and slowly rise the input pressure to about 1.7 bar(g). Do not exceed
system maximum input pressure (2 bar(g)).
