SERVICE
5
23
MS15 - MS40 SERIES
www.krohne.com
06/2020 - 4007717401 - AD ATEX MS15-MS40 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).
If it is necessary to lubricate the threaded cover of the MS15 series with grease, apply only
Molykote
®
HP-300 grease after you clean the cover.
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
5.3.1 General notes
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 about MS15 series limit
switches, refer to
How to open the terminal compartment
on page 15. For more data about
MS40 series limit switches, refer to
How to open the terminal compartment
on page 17.
•
Ex d-approved devices:
Ex d-approved devices:
Ex d-approved devices:
Ex d-approved devices: De-energize the device and then disconnect the electrical wires. For
more data about MS15 series limit switches, refer to
How to open the terminal compartment
on page 15.
•
Make sure that all electrical wires are isolated from the ground.
WARNING!
Do not try to repair flameproof joints. If it is necessary to repair a flameproof joint, speak or write
to your supplier.
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 silicone housing gasket,
the cable gland and the electrical cable. 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.
