JUMO 406060, Operating Manual

Page: 36 / 116

6 Commissioning
36
6 Commissioning
6.1 Safety instructions
CAUTION
Risk of burns due to hot measuring media
The device surface temperature may exceed 70 °C (158 °F),
depending on the measuring medium temperature!
• Before starting work on the device, make sure that it has
cooled sufficiently.
Aggressive or corrosive media may lead to the damage of wetted
parts of the sensor. As a result, measuring medium under
pressure can leak out.
Wear to the flange gasket or process connection gaskets
(e.g. pipe fitting, Tri-clamp, etc.) may caused a pressurized
measuring medium to escape.
When using internal flat gaskets, they can become brittle through
CIP- / SIP processes.
If pressure surges above the permissible nominal pressure of the
device occur permanently during operation, this may affect the
service life of the device.
If there is a chance that safe operation is no longer possible, take
the device out of operation and secure it against unintended
startup.
6.2 Write-protection switch, service LED and
local operator interface
1
Write-protection switch
2
Service LED
3
Local operator interface
Figure 44: Write-protection switch, service LED, local operator interface
Write-protection switch
With write protection activated, device parameter settings cannot
be modified via the local operator interface or the local display.
Turn the write-protection switch clockwise to deactivate write
protection and turn it counterclockwise to activate write
protection.
Service LED
The service LED that indicates the operating state of the device is
located in the terminal box for the sensor.
Service LED Description
Flashing rapidly (100 ms) Start-up procedure in progress; device is not ready
for operation
Permanently lit Device is running; no critical error
Flashing slowly (1 second) No critical error has occurred; see Diagnosis /
error messages on page 68