Connection Diagrams; Maintenance Work - Siemens SIPROCESS GA700 Compact Operating Instructions

Ex px safety equipment
B.1 Overview
⑨
Exhaust air outlet. If appropriate connection of a 1" line,
max. length 20 m
⑪
Ex power relay SR853
⑬
Electrical line connection wall-mounted device
Figure B-1 Ex p safety equipment, Gönnheimer Elektronik GmbH
Mounting instructions: When not in use, liquid gasket is applied to the purging gas outlet
You will find the information relevant for installation and operation of the Ex p safety
equipment with the wall-mounted device in the corresponding manufacturer documentation.
The connection diagram shown refers to the example of the pressurized enclosure system
"F870S-HD" distributed by Gönnheimer Elektronik GmbH:
If you are using safety equipment from other manufacturers, contact your Siemens service
partner, if applicable.
Note
Exhaust air outlet
The connection to the exhaust air outlet provides a G 3/4" female thread. If appropriate attach
1" line via tubing adapter from G3/4" female to G1" female. Max. length of the line shall not
exceed 20m for straight laying.
B.1.1

Connection diagrams

B.1.1.1

Maintenance work

Accumulation of potentially flammable gases
Explosion hazard
Potentially flammable gases can accumulate in the enclosure during maintenance work.
• Purge the enclosure with protective gas once maintenance work is complete.
Note
Optical signaling of the maintenance mode
To recognize the enabled maintenance mode (Bypass) of the Ex p safety equipment, we
recommend connecting an optical signaling on site.
108
WARNING
⑩
Electrical line connection customer
⑫
FS870S.702 mounting plate
⑭
Electrical connections I/O customer
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB
⑦
.