Burkert Type 8694 - Manual (Page 15)

15
Fluidinstallation
8. FLUID INSTALLATION
8.1. Safety instructions
DANGER!
Risk of injury from high pressure!
• Before dismounting pneumatic lines and valves, turn off the
pressure and vent the lines.
Risk of electric shock!
• Before reaching into the device or the equipment, switch off the
power supply and secure to prevent reactivation!
• Observe applicable accident prevention and safety regulations
for electrical equipment!
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.
8.2. Installing the process valve
Thread type and dimensions can be found in the corresponding data
sheet.
→
Connect the valve according to the operating instructions for the
valve.
8.3. Pneumatic connection of the
positioner
DANGER!
Risk of injury from high pressure!
• Before dismounting pneumatic lines and valves, turn off the
pressure and vent the lines.
Procedure:
→
Connect the control medium to the pilot air port (1)
(3 – 7 bar; instrument air, free of oil, water and dust).
→
Attach the exhaust air line or a silencer to the exhaust air port (3)
and, if available to the exhaust air port (3.1) (see “Fig. 8”).
Keep the adjacent supply pressure always at least 0.5 – 1
bar above the pressure which is required to move the actuator
to its end position. This ensures that the control behavior is
not extremely negatively affected in the upper stroke range on
account of too little pressure difference.
During operation keep the fluctuations of the pressure supply
as low as possible (max. ±10 %). If fluctuations are greater,
the control parameters measured with the
X.TUNE function
are not optimum.
english
Type 8694