Siemens Flender H2NV Series - General Oil­service Lives; Description of Maintenance and Repair Works; Examine Water Content of Oil, Conduct Oil Analyses

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BA 5060 EN 04/2011
Measures RemarksPeriods
Clean the oil filter Simultaneously with oil change See item 10.2.3.
Replace wet-air filter As required See item 10.2.4.
Clean fan and gear unit Depending on requirements,
at least every 2 years
See item 10.2.5.
Type with oil-dam pipe: recharge
with grease
Every 5000 operating hours
or at least every 10 months
See item 10.2.6.
Refill Taconite seals with grease Every 3000 operating hours
or at least every 6 months
See item 10.2.7.
Check the hose lines Yearly See item 10.2.8.
Change the hose lines 6 years from the manufacturing date
impressed
See item 10.2.8.
Check tightness of fastening bolts After approx. 400 operating hours,
thereafter every 2 years
See item 10.2.10.
Replacing backstop Every 10 000 operating hours See item 5.7.
Inspection of the gear unit. Every 2 years See item 10.4.
The coating must not carry an electrostatic charge!
The operator must ensure that highly effective mechanisms which can set up a charge
in the coating are safely avoided.
10.1.1 General oilservice lives
According to the oil manufacturers, the following are the expected periods during which the oils can be
used without undergoing any significant change in quality. They are calculated on the basis of an average
oil temperature of 80 °C:
─ for mineral oils, biologically degradable oils and physiologically safe (synthetic esters) oils 2 years
or 10 000 operating hours (does not apply to natural esters, such as rape seed oils).
─ for poly-α-olefins and polyglycols, 4 years or 20 000 operating hours.
The actual service lives may differ. The general rule is that an increase in temperature of 10 K
will halve the service life and a temperature decrease of 10 K will approximately double the
service life.
10.2 Description of maintenance and repair works
10.2.1 Examine water content of oil, conduct oil analyses
More information about examining the oil for water content or conducting oil analyses is obtainable from
your lubricant manufacturer or our customer service.
• For reference purposes, a fresh sample of the operating lubricating oil used must be sent with the used
oil sample to the analysing institute for analysis.
• The oil sample must be taken downstream of the filter of the oilsupply system while the gear unit is
running. A suitable connection point is normally located upstream of the gear unit input (e.g. oildrain
cock in the pressure line).
• A special sample container should be filled with the specified quantity of oil.
If there is no such sample container available, at least one litre of oil must be put in a clean,
transportworthy, sealable vessel.