Burkert Type 8791 - Manual (Page 25)

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Fluid connection
9. fluiD connecTion
9.1. connection of devices for the
hazardous area
When connecting devices in the hazardous area, observe the
“Additional information for use in the hazardous area“ enclosed with
the Ex-devices.
9.2. safety instructions
Danger!
risk of injury from high pressure in the equipment!
• Before dismounting pneumatic lines or valves, turn off the pres-
sure and vent the lines.
Warning!
risk of injury from improper installation!
• Installation may be carried out by authorized technicians only
and with the appropriate tools!
risk of injury from unintentional activation of the system and
an uncontrolled restart!
• Secure system from unintentional activation.
• Following installation, ensure a controlled restart.
Working connection 2
(connection: A2)
Supply pressure connection
1.4 – 7 bar (connection: P)
Working connection 1
(connection: A1)
Deaeration connection
Fig. 16: Fluid installation / Location of the connections
procedure:
→
Apply supply pressure (1.4 – 7 bar) to the supply pressure con-
nection P.
for single-acting actuators (control function a or B):
→
Connect one working connection (A1 or A2, depending on
required safety position) to the chamber of the single-acting
actuator.
Safety positions see chapter “9.3. Safety positions”.
→
Seal a working connection which is not required with a plug.
english
Type 8791