Nidec LEROY-SOMER FLSES 100 L, Руководство по пусконаладке и техническому обслуживанию

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Maintenance and service guide - LSPX-FLSPX ZONE 21 - Ex tb – LSES-FLSES ZONE 22 - Ex tc
5725 en - 2020.02 / c
INSTALLATION AND MAINTENANCE - LSPX-FLSPX ZONE 21 - Ex tb – LSES-FLSES ZONE 22 - Ex tc
10.6 - IP Leak tightness of motor
whenever removed during preventative maintenance
replace seals (shaft passages, bearing housing recesses,
terminal box cover etc.) using new seals with the same
characteristics after cleaning the components. Shaft passage
seals must be fitted using the same type of grease as the
bearings.
After every removal of drain plugs, refit them to
ensure the IP degree of protection plated on the
motor. Replace the seals that are removed using new
seals with the same characteristics. Clean the orifices
and plugs before refitting them.
After removal of the terminal box cover, replace the
seal using a new seal of the same type after cleaning
the components if its condition no longer guarantees the
required degree of protection. Stick it either to the
terminal box body or on the cover, and check that the
cover fixing screws are correctly tightened. Repeat this
operation for the terminal box body if it has been
removed.
10.7 - Group III paints
IEC EN 60079-0 §7.4 reminder:
Preventing electrostatic charge development on an item of
equipment:
Maximum thickness of non-metallic layer (paint):
Group IIB = 2 mm ; Group IIC = 0.2 mm ; Group III = no limit.
The instructions must provide users with recommendations for
reducing the risk of electrostatic discharges to as great an
extent as possible.
Physical effects:
• Paint gives rise to electrostatic risks due to friction: during
cleaning for example.
• Charges suspended in the air may be attracted by the
paint and thus give it an electrostatic charge: charge by
influence.
Leroy Somer recommendations:
• Earth continuity between the various metallic parts must
be ensured: frame, bearing housings, fan cover etc.
• The equipment must be permanently connected to earth.
• The motor must be cleaned using a damp cloth or using
means which do not cause friction on the paint: using an
ionised air-gun, for example.
• Users must prevent the paint gaining an electrostatic
charge. For example: by making motor operation
dependent on the level of humidity in the place it is
located or by ionising the surrounding air.
Users must carry out an assessment of the electrostatic risks
in order to meet the requirements of guide IEC/TS 60079-32-1.