6
SERVICE
16
OPTISWIRL 5080
www.krohne.com
07/2020 - 4008054001 - AD OPTISW5080 Exd Gb-Db en R01
6.1 Maintenance
Maintenance work of a safety-relevant nature within the meaning of explosion protection may
only be carried out by the manufacturer, his authorised representative or under the supervision
of authorised inspectors.
Fluids containing abrasive particles and flowing at high rates can cause significant wear to pipes.
If these conditions exist, check the flowmeter periodically for wear.
If the flow rate signal appears to have a calibration shift or goes to zero, check the flowmeter for
corrosion or wear.
For systems in hazardous areas, regular checks are required in order to maintain the proper
condition.
The following checks are recommended:
•
Check the housing, the cable entries and the feed lines for corrosion and/or damage.
•
Check the measuring unit and the piping connections for leakage.
•
Check the measuring unit and the indicator for dust deposits.
•
Include the flowmeter in the periodic pressure test of the process line.
6.2 Dismantling
Exchanging the built-in equipment
The dismantling and installation is within the responsibility of the operator.
Due to the modular design of the vortex flowmeters, from a safety perspective, the electrical
equipment built into the signal converter can be replaced with identical spare parts. To do so,
remove the housing cover. Close the housing cover immediately after the spare parts are
exchanged. Ensure that the cover seal is tight.
General notes
Only identical parts or components from the manufacturer may be used.
If replacing parts, do not use parts made of other materials or parts that in any other way change
the device as described in the model code on the nameplate.
The device must be de-energised, if it is absolutely necessary to open the flameproof enclosure
or the dustproof electronics compartment in the presence of a potentially explosive atmosphere.
Before connecting or disconnecting the electrical connection cables of the device, make sure
that all cables leading to the signal converter are isolated from the ground of the hazardous
area.
Process fluid
If process containing parts which need to be disassembled:
1. Make sure that process fluid is not under pressure or at high temperature.
2. Take proper precautions concerning leakage or spillage of any toxic or otherwise dangerous
fluid. Follow any material safety data sheet (MSDS) recommendations.
