Burkert Type 2000 - Manual (Page 8)

8
Assembly
7. aSSembly
Danger!
risk of injury from high pressure in the system.
• Before loosening lines or valves, turn off the pressure and vent
the lines.
preparatory work
→
Observe flow direction (see type label).
→
Clean pipelines (sealing material, swarf, etc.).
devices with welded body
Remove the actuator from the valve body:
→
Clamp the valve body into a holding fixture.
note!
damage to the seat seal or the seat contour!
→
Open the valve for control functions A and I: Pressurize the
lower pilot air port with compressed air (5 bar).
→
Place a suitable open-end wrench on the wrench flat of the nipple.
→
Unscrew the actuator off the valve body.
devices with threaded body:
→
Only disassemble the actuator if required by the customer.
7.1. installation
Warning!
risk of injury from improper installation!
Damaged parts or incorrect tightening torques can cause leaks on
the equipment.
• Use an open-end wrench for the assembly.
• Observe the tightening torque (see torque table).
devices with approval in accordance with din en 161
In accordance with DIN EN 161 "Automatic Shut-off Valves for Gas
Burners and Gas Appliances", a strainer must be installed upstream
of the valve to prevent a 1 mm test pin from penetrating.
7.1.1. installing the body
Welded body:
→
Weld valve body in pipeline system.
other body designs:
→
Connect body to pipeline.
7.1.2. installing the actuator (welded body)
→
Check graphite seal and, if required, replace. Fully remove any
residue when replacing the seal.
Warning!
danger due to lubricants that contaminate the medium!
In oxygen applications there is a risk of an explosion!
• Only use approved lubricants for specific applications, such as
oxygen or analytical applications.
english
Type 2000