Burkert Type 2731 - Manual (Page 26)

10.2.4 service life of the diaphragm
The service life of the diaphragm depends on the following factors:
• Diaphragm material
• Medium, Medium pressure, Medium temperature
• Actuator size
• Pilot pressure for CFB.
protecting the diaphragm
→
For CFA match the actuator size (actuator force) to the medium
pressure to be actuated. If required, select the actuator with
reduced spring force EC04.
→
For CFB try and select the pilot pressure not higher than is
required to actuate the medium pressure.
10.2.5 cleaning
Commercially available cleaning agents can be used to clean the
outside.
noTe!
avoid causing damage with cleaning agents.
▶ Before cleaning, check that the cleaning agents are compatible
with the body materials and seals.
Follow instructions for use in the Ex area!
See chapter “3.1”
.
11 repairs
11.1 safety instructions
Danger!
danger – high pressure in the equipment!
▶ Before loosening the lines and valves, turn off the pressure and
vent the lines.
risk of injury due to electrical shock!
▶ Before reaching into the system, 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 maintenance!
▶ Installation may be carried out by authorised technicians only
and with the appropriate tools!
▶ Observe the tightening torques.
▶ On completion of the work check valve for leaks and function.
risk of injury from unintentional activation of the system and
an uncontrolled restart!
▶ Secure system from unintentional activation.
▶ Following maintenance, ensure a controlled restart.
26
Repairs
english
Type 2730 / 2731 / 2731K