Operating Instructions ET-xx8 / MT-xx8
Maintenance, overhaul and repair
Page 48 of 84
R. STAHL HMI Systems GmbH / OI_ET_MT-xx8_en_V_01_02_03.docx / 10.03.2021
12 Maintenance, overhaul and repair
Explosion hazard due to damaged seal or leaking of filling
material !
Non-compliance may result in fatal or serious injuries !
In case of damage or changes to the factory state immediately
decommission the device.
Contact manufacturer.
If the device leaks filling material (small glass beads) it must be
decommissioned immediately !
Explosion hazard due to incorrect maintenance or repair !
Non-compliance may result in fatal or serious injuries !
Ensure the atmosphere is non-explosive.
Make sure that the device is not damaged.
Do not open the enclosure.
If the device is connected to the mains:
o
Disconnect the device from the power supply.
o
Isolate supply and all Ex e circuits and wait 5 minutes before
opening the terminal boxes.
Hot surfaces !
Non-compliance may result in minor burns !
In ambient temperatures exc45 °C the surface of the device
may heat up.
Do not touch the device.
Additional for MT-xx8 HMIs:
Do not open, service or repair in an area where an explosive atmosphere may be present.
12.1 Changing the battery
The internal battery must only be replaced by the manufacturer.
12.2 Servicing
The enclosure is sealed and cannot be opened.
When servicing the device, check the following points in addition to those stipulated in the national
regulations:
Damage to seals: cracks or other visible damage to the device enclosure and / or the
protective enclosure.
All cables and conductors securely connected: cables tightly clamped
All cables and conductors undamaged
Compliance with permitted temperature range
Mounting fits securely, all screws tightened fast
Ensure the device is used as intended
CAUTION
DANGER
WARNING
