Maintenance / Cleaning - Burkert 2080 Manuel D'utilisation

Setting the intermediate position:
→
attach a suitable flow measuring device (measuring
cup, flow meter, etc.),
→
loosen the lock nut,
→
connect pilot air to X and Y,
→
open the medium supply,
→
set the required flow on the adjusting spindle
stroke range = 0 to 2.5 mm (rotating the spindle
clockwise reduces the flow),
→
switch off the pilot air,
→
tighten the lock nut.
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9.2. maintenance / cleaning

The bellows situated between the medium compartment and
actuator ensure that the valve switches reliably and protect
the medium from contaminants coming from the actuator
side. These bellows are subject to symptoms of fatigue. If the
bellows are defective, medium will escape out of the leakage
detection opening. To prevent them from being destroyed,
the bellows should be changed prophylactically at regular
intervals (see instructions on changing the bellows). The valve
interior has no gaps and the inner compartment and bellows
have been designed with very smooth contours (surface
roughness max. 0.8 µm). The valve is CIP compatible (CIP =
cleaning in process) and SIP compatible (SIP = sterilization
in process).
9.3. changing the bellows
Removing the actuator
→
Provide the required spare parts and a size 7 open-
ended wrench,
→
Interrupt the pilot air supply, vent and disconnect the
lines,
→
Interrupt the medium supply and vent the lines,
→
Loosen both fastening screws,
→
Remove the actuator.
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9. mainTenance,
malfuncTiOns
9.1. safety instructions
Danger!
Danger – high pressure in the equipment!
There is a serious risk of injury when reaching into the
equipment.
• Before loosening the lines and valves, turn off the
pressure and vent the lines.
Warning!
Danger due to improper maintenance work!
Improper maintenance may result in injuries as well as
damage to the device and the surrounding area.
• Maintenance work may be carried out by authorised
technicians only and with the appropriate tools!
Danger due to unintentional activation of the equipment!
Unintentional activation of the equipment during maintenance
and repair work may result in injuries and/or damage.
• Take appropriate measures to prevent the equipment
from being unintentionally activated.
Changing the bellows
→
Unscrew the bellows from the spindle,
→
Clean the inner compartment of the body,
→
Manually screw the new bellows onto the spindle and
tighten them hand-tight.
Attaching the actuator
→
Clean the O-ring 25 x 2 FKM 70 in the body, check
whether it can be re-used and, if required, replace it
with a new O-ring
→
Place the actuator with new bellows on the body;
ensure that the bores in the actuator are correctly
aligned with the thread in the body
→
Attach the actuator to the body with the fastening
screws (tightening torque from 2 to 2.2 Nm).
Restarting the bellows valve
→
Connect the pilot air line,
→
Open the pilot air,
→
Open the medium supply,
→
Conduct a function and leak test,,
→
If the valve functions reliably, it can be restarted.
Type 2080
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