15
Maintenance, malfunctions
Type 2080
8
MainTenance, MalfuncTiOns
Danger!
▶
Danger due to high pressure in the system.
Acute risk of injury when intervening in the system.
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Before loosening lines and valves, turn off the pressure and vent the lines.
Risk of injury from discharge of pressure and escaping medium.
Dismantling a device that is under pressure is hazardous due to a sudden discharge of pressure or
escaping medium.
▶
Before disassembly, shut off the pressure and vent all lines.
▶
Empty the lines completely.
Warning!
Risk of injury through improper maintenance.
Improper maintenance may result in injuries as well as damage to the device and its surroundings.
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Maintenance work may only be carried out by authorised specialist personnel and with suitable tools.
Danger due to unintentional operation of the system.
Unintentional restarting of the unit during maintenance and repair work can lead to injuries and damage to
property.
▶
Take appropriate measures to prevent the system from being operated unintentionally.
8.1
Maintenance / cleaning
The bellows between the medium chamber and the actuator enables functionally reliable switching of the valve
and protects the medium from contamination from the actuator side.
This bellows is subject to fatigue. If the bellows is defective, medium leaks out of the opening for leakage control.
To avoid damage, the bellows should be replaced preventively on a regular basis (see chapter “8.2 Change
bellows”).
The valve is designed without gaps on the inside and with very smooth contours on the interior as well as on the
bellows (surface roughness max. 0.8 µm).
The valve is CIP-capable (CIP = cleaning-in-place) and SIP-capable (SIP = sterilisation-in-place).
8.2
Change bellows
Disassemble actuator
→
Have the necessary spare parts and an open-end wrench SW 7 ready.
→
Observe safety instructions!
→
Loosen fastening screws
→
Remove actuator.
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