minutes above.
With increasing inlet pressure resulting in higher purge ow the pre-purging time gets less.
WARNING
Absence of ammable gases
Always ensure the absence of ammable gases inside the GA700 wall housing before powering
on the GA700 device.
Attach air supply or inert gas to air inlet (2). Take care that the purging gas supplied is clean,
dry and regulated to 2200 hPa relative +- 10 % at the air inlet (2). Ensure a stable pressure at
the inlet.
Always ensure a constant ow higher than 1 Nl/min.
To do so, with closed enclosure and active purging, turn the ow control (3) counter-
clockwise until system status indication (1) turns red, which indicates insucient ow. Now
turn the ow control (3) back clockwise until system status indication (1) turns green,
indicating a ow of > 1NL/min.
You will nd the information relevant for installation and operation of the Ex p
safety equipment with the wall-mounted device in the corresponding manufacturer
documentation.
Better: Also, observe operating instruction of Z Purge Control System D712, ML 466.
Series 6, purging unit FM (Class I Div 2)
Classication Class I Division 2
FM certicate Certicate of compliance
1X8A4.AE / 0B3A3.AE
Reaction upon failure of pressure Opening of switching contact, and alarm via signal indicator
(red display)
System type MiniPurge complete system
Operation mode Continuous purging
Type of enclosure Reinforced polycarbonate
Enclosure surface RAL 7035 gray with transparent cover
Pressure supply Dry, oil-free air or inert gas with regulated pressure of approx.
2000 hPa (30 psi) at inlet of MiniPurge
Supply connections Pressure via ¼ BSPP connection, pressure hose at least ½" or 12
mm
Display (signal indicator) Pneumatically driven color signal: green/red
Switching contact Via SPCO switch approved for Class I Division2
Settings min. 0.5 hPa corresponding to min. purging gas ow of 1 to 2
l/min.
Prepurging time Dened by operator, and controlled manually
Ex pz safety equipment
C.1Ex pz safety equipment
SIPROCESS GA700 rack and wall mounted devices
116 Compact Operating Instructions, 06/2023, A5E35134047-AB
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