SERVICE
5
25
OPTIWAVE X500
www.krohne.com
06/2017 - 4005809801 - AD ATEX OPTIWAVE x500 R01 en
5.1 Periodic maintenance
5.2 Keep the device clean
Obey these instructions:
•
Keep the thread of the terminal compartment cover clean.
•
If dirt collects on the device, clean it with a damp cloth.
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:
•
Before you open the flameproof or dustproof terminal compartment, de-energize the device.
For more data, refer to
How to open the terminal compartment
on page 17.
•
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.
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 ia electronic block with a different block that is from a device which does
not have an intrinsically-safe barrier.
Do not use connectors in the signal converter housing or open the cover to change the device
configuration when there is an explosive atmosphere. Maintenance can only be carried out by
"Personnel trained in explosion protection".
INFORMATION!
For more data about regular inspections and maintenance procedures for devices with Ex and
other approvals, refer to the related supplementary instructions.
WARNING!
The device contains a PEEK boundary wall between the process and the signal converter. If the
PEEK part is not resistant to corrosion by your cleaning agents, do not clean the device with
them.
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.
