●
Cable entries, cable glands, plugs etc. have to be checked for correct tightness
and sealing. Consider torques according to manufacturer's details. If required,
replace the components. Only use components which have an own EC type
examination certificate.
●
Check whether Ex connections are fastened correctly.
●
Take care of possible discolouration of the terminals and wires. This would in-
dicate an increased temperature.
●
For Ex housings, pay special attention to a possible collection of water. This
may originate from “breathing” due to severe temperature variations (e. g.
change of night and day), from damaged seals etc. Remove any water immedi-
ately.
●
Check the flame path gaps of flameproof enclosures for dirt and corrosion.
●
Since the dimensions of all flameproof joints are strictly defined and inspected,
no mechanical work (such as grinding) shall be performed on them. The joint
surfaces have to be cleaned chemically (e. g. with Esso-Varsol).
●
Prior to fitting, preserve joint surfaces with an acid-free corrosion protection
agent (e. g. Esso Rust-BAN 397).
●
Ensure that all housing covers are handled carefully and that the seals are
checked.
●
All cable and motor protection components have to be checked.
●
If defects impairing the safety are detected during maintenance, repair measures
have to be initiated without delay.
●
Any kind of surface coating for the joint surfaces is not permitted.
●
When exchanging parts, seals etc. only original spare parts shall be used.
12.4.
Disposal and recycling
Our devices have a long lifetime. However, they have to be replaced at one point in
time. The devices have a modular design and may, therefore, easily be separated
and sorted according to materials used, i.e.:
●
electronic scrap
●
various metals
●
plastics
●
greases and oils
The following generally applies:
●
Greases and oils are hazardous to water and must not be released into the
environment.
●
Arrange for controlled waste disposal of the disassembled material or for sep-
arate recycling according to materials.
●
Observe the national regulations for waste disposal.
70
SQEx 05.2 – SQEx 14.2 / SQREx 05.2 – SQREx 14.2 Control unit: electronic (MWG)
Servicing and maintenance
ACExC 01.2 Non-Intrusive Modbus TCP/IP
Summary of Contents for SQEx 05.2
Page 91: ...91 AUMA worldwide...
