SEW-Eurodrive M1 N Series, Руководство по сборке и эксплуатации

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7
Inspection/maintenance
Changing the oil
Assembly and Operating Instructions – M1..N Series Single-Stage Helical Gear Units
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7.6 Changing the oil
7.6.1 Notes
Observe the following when changing the oil.
WARNING
Risk of burns due to hot gear unit and hot gear unit oil.
Serious injury.
• Let the gear unit cool down before you start working on it.
• Remove the oil drain plug very carefully.
NOTICE
Improper oil change can damage the gear unit.
Possible damage to property.
• Observe the following information.
• Perform the oil change quickly after you have switched off the gear unit to prevent
solids from settling. If possible, drain the oil while it is still warm. Avoid oil tempera-
tures well above 50 °C.
• Always fill the gear unit with the same oil grade as before. Mixing oils of different
grades and/or manufacturers is not permitted. Synthetic oils in particular must not
be mixed with mineral oils or other synthetic oils. When switching from mineral oil
and/or when switching from synthetic oil of one basis to synthetic oil of another
basis, thoroughly flush the gear unit with the new oil grade.
Refer to the lubricant table for information on the permitted oil of the various lubri-
cant manufacturers.
• Oil grade and oil viscosity are listed on the nameplate of the gear unit. The oil
quantity specified on the nameplate is an approximate quantity. The mark on the
oil dipstick or oil level glass is the decisive indicator of the correct oil quantity to be
filled in.
The required oil fill quantity is higher when additional attachments are mounted to
the gear unit, such as an oil supply system. Observe the operating instructions of
the oil supply system.
• When changing the oil, flush the interior of the gear unit thoroughly with oil to re-
move oil sludge, oil residue, and abrasion. Use the same oil grade as for operating
the gear unit. Fill in fresh oil only after all residues have been removed.
• For the position of the oil level plug, the oil drain plug, and the breather, refer to the
order documents.
• An oil level above the max. marking might indicate that foreign liquids (e.g. water)
have entered. An oil level below the min. marking might indicate a leakage. Find
out and eliminate the cause before you fill in new oil.
• If required, empty accessories e.g. filters and pipes.
• Replace any damaged seals on the oil drain plug.
• If present, clean the magnetic oil drain plug and the oil dipstick with magnet tip.
• Empty the oil-bearing system of gear units with circulation lubrication and oil sup-
ply systems according to the manufacturer's maintenance instructions.
• Elements for controlling the oil level, oil drain, and oil fill openings are indicated by
safety symbols on the gear unit. 29203856/EN – 03/2020