Burkert Type 2300 Manuel d'utilisateur Page 29

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29
Maintenance, cleaning
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!
Maintenance may be performed by authorised technicians only!
To screw on or unscrew valve body or actuator, use an open-
end wrench, never a pipe wrench, and observe tightening
torques.
Risk of injury from unintentional activation of the system and
an uncontrolled restart!
Secure system from unintentional activation.
Following maintenance, ensure a controlled restart.
WARNING!
For control function I – Danger if pilot pressure fails!
For control function I control and resetting occur pneumatically.
If the pressure fails, no defined position is reached.
To ensure a controlled restart, first pressurize the device with
pilot pressure, then switch on the medium.
Risk of injury from moving parts in the device!
Do not reach into openings.
10.2. Maintenance work
Actuator:
The actuator of the angle-seat control valve is maintenance-free
provided it is used according to these operating instructions.
Wearing parts of the angle-seat control valve:
Parts which are subject to natural wear:
Valve seat
Control cone
Seals
If leaks occur, replace the particular wearing part with an appro-
priate spare part.
(For spare-part sets see chapter entitled “12. Replacement
parts”).
The replacing of the wearing parts is described in chapter
“10.3. Replacing the wearing parts”.
english
Type 2300
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