5
SERVICE
54
OPTIFLEX X200
www.krohne.com
09/2018 - 4006564001 - AD IECEX OPTIFLEX x200 R01 en
5.1 Periodic maintenance
In normal operational conditions, no maintenance is necessary. Only the manufacturer can
repair the device and replace components. If it is necessary, maintenance must be done by
approved personnel (the manufacturer or personnel approved by the manufacturer).
5.2 Keep the device clean
Obey these instructions:
•
Keep the device clean to prevent dust contamination. Do not blow dust with compressed air.
Clean the device with a damp cloth.
5.3 How to remove the device
If you must do work in a hazardous location:
•
Ex i-approved devices:
Ex i-approved devices:
Ex i-approved devices:
Ex i-approved devices: Disconnect the electrical wires. For more data, refer to
How to open
the terminal compartment
on page 38.
•
Devices with other Ex protection concepts:
Devices with other Ex protection concepts:
Devices with other Ex protection concepts:
Devices with other Ex protection concepts: De-energize the device. If necessary, only open
the terminal compartment after the time shown on the device label. For more data, refer to
How to open the terminal compartment
on page 38. Disconnect the electrical wires.
•
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.
CAUTION!
Do not try to repair flameproof joints. If it is necessary to repair a flameproof joint, speak or write
to your supplier.
Do not replace an Ex i electronic block with a different block that is from a device which does not
have an intrinsically-safe barrier.
Maintenance can only be carried out by "Personnel trained in explosion protection".
DANGER!
If dirt collects on the device, clean it with a damp cloth.
Do not use cleaning agents which can cause damage to the paint, the boundary wall (the PTFE,
single ceramic or double ceramic process seal options), the silicone housing gaskets and the
process connection gaskets (EPDM, FKM/FPM, Kalrez
®
etc.). Also make sure that the cleaning
agent does not remove the data printed on the nameplate.
If you use the incorrect cleaning agent (i.e. the device is not resistant to corrosion by your
cleaning agent), do not use the device in a hazardous location. If aid is necessary, speak or write
to the supplier.
