Bearing Bracket - Grundfos NK Serie Montage- Und Betriebsanleitung

7.8 Bearing bracket

7.8.1 Bearing bracket with grease lubrication
Fig. 19 Bearing bracket with grease nipples
Relubricate the bearings by means of a grease gun. See section
11.2.1 Grease-lubricated bearings
lubricating intervals.
Fig. 20 Bearing bracket with automatic grease lubricators
The lubricators are supplied separately. Remove the grease
nipples, fit the grease lubricators on top of the bearing bracket
and set them to empty within 12 months according to the
instructions supplied with the lubricators.
7.8.2 Bearing bracket with constant-level oiler
Fig. 21 Bearing bracket with constant-level oiler
Caution
There is no oil in bearing bracket when it is delivered.
Fit the constant-level oiler on the bearing bracket
Note before filling oil into the bearing bracket. See
instructions on the label on the reservoir.
20
to get recommended re-
Filling of oil
Fig. 22 Filling of oil
Step Action
1 Remove the filling plug.
Hinge down the constant-level oiler, and pour the oil
2 through the filling hole until the oil reaches level in the
connection elbow. See 1 in fig. 22.
Fill the reservoir of the constant-level oiler with oil, and
snap it back into operating position. Now oil will be filled
3 into the bearing bracket. Air bubbles can be seen in the
reservoir during this process. Continue until the correct
oil level is reached. See 2 in fig. 22.
When no bubbles appear in the reservoir, refill the
4 reservoir, and snap it back into operating position. See
3 in fig. 22.
5 Fit the filling plug.
Filling plug
Full constant-
level oiler
Oil level in
constant-level oiler
when being filled
with oil
Drain plug
Fig. 23 Filling of oil
The oil level in the bearing bracket must always be
as shown in fig. 23.
Caution
Check the oil level regularly during operation, and
add oil, if necessary. The oil level must always be
visible in the sight glass.
Checking the oil level
The oil level in the bearing bracket will be correct as long as the
function of the constant-level oiler is correct. To check the
function of the constant-level oiler, slowly drain oil through the
drain plug until the constant-level oiler starts to operate, i.e. until
air bubbles can be seen in the reservoir.
Correct oil level in
bearing bracket
with constant-level
oiler during
operation
Oil level when
filling