KROHNE BM 702 EN - Manual (Page 19)

Installation and operating instructions BM 702 (06/04) 19
5 Maintenance, error handling
Replacement of the signal converter
Before commencing, note the parameters of the BM 702 and switch off the power supply!
1.
Disconnect all cables from the terminals in the terminal compartment.
2. Remove the 4 Allen screws M (Allen key size 5 mm) and lift off the signal converter.
The flange unit (incl. waveguide window) will remain tight even with pressurized tanks.
Caution
On pressurized tanks, do not on any account remove the 4 screws H connecting the
waveguide window to the BM 702 flange! DANGER!
3. Fit the new BM 702 converter.
4. Reconnect all cables in the terminal
compartment, as described in Section
3.
5. Check against the enclosed report on
settings whether the factory-set
parameters are correct for your
application. If not, reset.
6. Record the empty spectrum,
see Section 4.
distance piece
(for hightemperature
version up to 250°C (482°F)
O-ring
BM70
connecting flange
signal converter
M
H
Returning a BM 702
The party returning a device is obligated to check and ensure that all cavities in the device
are free from dangerous substances (toxic, caustic, flammable, water-endangering), and
that a certificate is enclosed with the device confirming that it is safe to handle.
Error display during measurement (only for versions with local display)
When function 3.2.5 "ERROR. MSG." is set to YES, any error occurring during measurement
is indicated in the display and alternates with the measured value for as long as the error is
present.
In addition, all errors are stored. Press the keystroke combination
↵ ↑ → → to get into
the error list. You can page through the list with key
→ , and acknowledge the errors at the
end - if required - by "QUIT YES". Press key
↵ twice to return to the measuring mode.
Fatal errors (FATAL ERROR), that are detected when the device is started up, render
operation of the BM 702 impossible.