Burkert Type 2731 - Manual (Page 25)

10 MainTenance, cleaning
10.1 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 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 maintenance, ensure a controlled restart.
10.2 Maintenance work
10.2.1 actuator
The actuator of the diaphragm control valve is maintenance-free
provided it is used according to these operating instructions.
10.2.2 Wearing parts of the diaphragm
control valve
Parts which are subject to natural wear:
• Seals
• Diaphragm
→
If leaks occur, replace the particular wearing part with an appro-
priate spare part (see chapter “12 Replacement parts”).
A bulging PTFE diaphragm may reduce the flow.
The replacing of the wearing parts is described in chapter
“11 Repairs”.
10.2.3 inspection intervals
→
Check diaphragm for wear after maximum 10 5 switching cycles.
Muddy and abrasive media require correspondingly shorter
inspection intervals!
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Maintenance,cleaning
english
Type 2730 / 2731 / 2731K