Burkert Type 2731 - Manual (Page 23)

12 repairs
12.1 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.
12.2 replacing the diaphragm
required spare part
• Diaphragm
fastening types
Orifice dn
(diaphragm
size) fastening types for diaphragms
ptfe
epdm / fkm
65
Diaphragm with bayonet
catch
Diaphragm screwed in 80
100
Tab. 10: Fastening types for diaphragms
DaNger!
risk of injury from discharge of medium and pressure!
It is dangerous to remove a device which is under pressure due to
the sudden release of pressure or discharge of medium.
▶ Before removing a device, switch off the pressure and vent the
lines.
23
Repairs
english
Type 2730 / 2731 DN 65-100