Flowserve DS User Manual

Page 27

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DS USER INSTRUCTIONS ENGLISH 71576283 - 02/13

02

Page 27 of 36

flowserve.com

TIME

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REGULAR GREASE CHANGE:
Change the grease every 4000 operating hours.

COMPLETE CLEANING DURING A MAJOR
OVERHAUL:
a) Remove bearing housing from the rotor

assembly.

b) Brush bearing housing with hot kerosene (100-

115 °C) [(212-239 °F)] or other non-toxic
solvent.

c) Flush out the housing with a light mineral oil.

d)

Do not use waste oil to clean the

housing.


To clean the bearings:

a) Wipe off as much grease as possible with clean

nonlinting cloth.

b) Brush bearings with hot kerosene (80-90 °C)

[(176-194 °F)] while gently spinning the outer
bearing ring.

c) Spin each ball to insure that it is clean.

To remove badly oxidized grease, which refuses to
come off:
a) Support rotor in vertical position and immerse

bearing in hot kerosene or a mixture of alcohol
and light mineral solvent.

b) Gently spin bearing outer ring.
c) Reflush bearing with clean light oil and force

fresh grease into it.

6.2.4 Oil lubricated anti friction bearings
The bearing housing is filled with oil to a defined
level, which is maintained during operation by a
constant level oiler. A breather filter connects the
housing space with the atmosphere. The correct oil
level is very important.

At too low oil level the bearing will run dry and wear
out fast. At too high oil level the bearing may run hot
and oil will leak past the V-rings.

The bearing housing is provided with a constant
level oiler. It feeds enough oil to maintain the
required level. The control operates on the liquid
seal principle, feeding only when the level is lowered
and breaks the liquid seal at the shank end, thus
permitting air to enter the bottle. It will not feed as
long as the oil covers the hole in the shank end.

The constant level oiler has a fixed level, which is 7
mm (0.28 in.) above connection centerline. If it is
replaced by another model make sure that this
distance is maintained. As long as oil is visible in the
glass dome there is no need to refill.

IF OIL NEEDS TO BE REFILLED:
a) Turn the dome out at its hinge.
b) Screw the glass dome off.
c) Fill the glass dome with oil.
d) Screw it back and swing the dome in upward

operating position.

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