USER'S GUIDE____________________________________________________________________
60 __________________________________________________________________ M210474EN-B
Paper machine application
Typically, a paper machine contains two or three separate lubrication
systems. Usually, one is located at the wet end and the other at the dry
end. There is a certain amount of free moisture constantly present
which means that there is a risk of this moisture becoming into contact
with the machine bearings. The most common reasons for the entrance
of water are an inadequate sealing of the housing and cleaning with
high pressure. However, accidental leakages from oil coolers and
other equipment may also cause damage. In paper machines, the oil
should absorb water while lubricating the bearings and then release
this water when collected into the reservoir. It is to be noted that
bearings should never be exposed to oils that have a high water
content; this is especially important during standstill because the risk
for corrosion process increases as the oil temperature decreases. It is
essential to monitor the water content and keep it on a suitable level.
When measuring the water content of oil in paper machines, it would
be useful to measure the water activity before an oil reservoir and
from a pressure line flow. This way, the performance of dehumidifiers
can be kept under control to ensure that no free water reaches the
bearings.
Summary of Contents for HUMICAP MMT310
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