SERVICE
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OPTIWAVE X400
www.krohne.com
10/2017 - 4006413501 - AD NEPSI OPTIWAVE x400 R01 en
5.3 How to remove the device
The installation and removal of the device or the signal converter is a task for approved
personnel (operator, fitter, electrician etc.). If you must change the signal converter or all of the
device, refer to the procedures in the handbook.
If you must do work in a hazardous location:
•
Ex ia-approved devices:
Ex ia-approved devices:
Ex ia-approved devices:
Ex ia-approved devices: Before you open the terminal compartment, de-energize the device.
For more data, refer to
How to open the terminal compartment
on page 18.
•
Devices with other Ex protection concepts:
Devices with other Ex protection concepts:
Devices with other Ex protection concepts:
Devices with other Ex protection concepts: Do not open the terminal compartment in a
potentially explosive atmosphere.
•
Before you remove the device from the process connection, make sure that the tank is not
pressurized. A pressurized tank can cause injury to persons when they do work on it.
•
Make sure that all electrical wires are isolated from the ground. This is also applicable to
Protective Earth (PE), Functional Earth (FE) and equipotential bonding conductors.
•
Apply grease to dry housing cover seals after you open the terminal compartment. Use a
multi-purpose grease (e.g. UNIMOLY
®
C 220).
•
Close the housing cover immediately after maintenance. Make sure that the housing is
sealed.
5.4 OPTIWAVE 6300: Replacement of the signal converter
You can replace the signal converter of an OPTIWAVE 6300 level transmitter that has an
Ex approval that agrees with certificate of conformity GYJ091178, GYJ091179, GYJ14.1229X or
GYJ14.1230X. But do the checks that follow:
If you replace the signal converter, the data (temperature, voltage etc.) given in these
supplementary instructions agrees with the new device configuration.
DANGER!
Devices with Ex i approvals:
Devices with Ex i approvals:
Devices with Ex i approvals:
Devices with Ex i approvals: Make sure that you use an intrinsically-safe barrier and electrical
wires with the correct parameters. This data is given on the device nameplate of the new
converter. Make sure that the signal converter was not installed in Zone 0 or Zone 20.
