User Manual

7 SERVICE
82
OPTIWAVE 7400-24 C
www.krohne.com 12/2015 - 4004901901 - MA OPTIWAVE7400-24 R01 fr
7.4.2 Replacement of the OPTIWAVE 7300 signal converter with the OPTIWAVE 7400
signal converter
Equipment needed:
• 5 mm Allen wrench (not supplied)
• Slotted-tip screwdriver (not supplied)
• Wrench for housing cover
• Yellow / blue magnet
• OPTIWAVE 7300 C radar level meter
• OPTIWAVE 7400 signal converter (without process connection and antenna)
• Handbooks for all devices
Procedure 1: Record the offset value (OPTIWAVE7300 radar level meter)
1 Energize the device.
i The device is in operation and in normal mode.
2 Push [^
^^
^] to go to the SERVICE menu.
i The display screen shows the text "Code 2".
3 Give the password for the SERVICE menu. If you do not have the password, speak to the sup-
plier.
4 Push [>
>>
>], [

] and [>
>>
>] to go to menu item 4.2.1 Offset. Record the offset value.
5 Push 4 × [^
^^
^]. Push [

] or [

] for the selection of the save option (Store No, Store Yes or Re-
turn). Set to "Store No" to cancel the changes to the device settings.
6 Push [^
^^
^] to confirm.
i The device is in normal mode.
7 De-energize the device.
8 Remove the electrical cables.
9 Attach the signal converter cover.
INFORMATION!
Complete the 5 procedures that follow in numerical sequence.
To get the passwords for the OPTIWAVE 7300 and OPTIWAVE 7400 Service menus, speak to the
supplier.
CAUTION!
Make sure that you also record device configuration data. This data includes basic configuration
(tank height, blocking distance etc.), output, application, display and strapping table data. You
can find this data in the Supervisor menu.
INFORMATION!
If you cannot start the device, record the serial number on the device nameplate and contact the
supplier. The supplier will give you the offset value.