Maintenance/Inspection; Checking Instructions; Lubrication - KSB AU Manuel D'instructions

automatic circuit breaker, etc.) or the start-up batteries
(disconnect operating energy).
The pump is free of pumped fluid, cleaning it
internally with appropriate liquid whenever it is a
hazardous fluid (hot, contaminant...)
7.2

Maintenance/inspection

7.2.1

Checking instructions

During the first minutes of operation:
In cases of mechanical seal
- There may be a brief large leak during start up. Should
this leak persist, shutdown the group and determine the
cause. The causes may be, amongst others, dirt in the
pumped area or dry operation due to incomplete
discharge of the pump air.
In cases of packing seal:
- There is no leak; immediately loosen the gland to obtain
small dripping.
- Excessive fluid leak; leave to settle for 10 minutes; tighten
the gland by turning 1/6th and leave for 5 minutes.
Repeat the process until between 20 and 60 drops per
minute are achieved.
After a few hours operation:
Check the bearing temperature at the point in
Note
the bearing
temperature can reach up to 40°C above environmental
temperature, but must never exceed 90°C.
Observe the possible anomalies shown in point 8 of this
manual.
The reserve pumps should be started up and shutdown once
a week, in order to ensure they are always in service
conditions.
The failure of one or both sides of the seal may lead to
excess heating. This can be corrected by following the
instructions of the seal manufacturer, both with regards to its
assembly and the maintenance of the auxiliary seal devices,
where appropriate. Alternatively, the pump may be fitted with a
monitoring device if the purchaser has so specified.
7.2.2

Lubrication

The type of lubrication of the bearings of the pump depends
on its size and construction:
SIZE Construction
AU-M-1,5 Monobloc
AU-M-2 Monobloc
AU-M-3 Monobloc
AU-M-50 Monobloc
AU-1,5 Bearing bracket
AU-2 Bearing bracket
AU-3 Bearing bracket
AU-50 Bearing bracket
AU-65 Support
AU-80 Bearing bracket
AU-100 Bearing bracket
AU-150 Support
AU-200 Support
12
location area. Normal
LUBRICATION
Not applicable
Not applicable
Not applicable
Not applicable
Lifelong
Lifelong
Lifelong
Oil
Lifelong
Grease
Oil
Grease
Oil
Before lubricating the pump, ensure that:
The pump is shutdown and cannot be started up
accidentally.
The bearing support temperature is less than 40ºC,
in order to prevent burns to the hands. To do this,
measure the temperature with a thermocouple.
The absence of oil/grease in the bearing support may lead to
a lack of lubrication of the Shaft seal rings, which will come
into dry contact with the shaft. This contact may lead to a high
shaft temperature which might cause ignition. To prevent this,
regularly check the oil/grease level in the bearings support.
BEARINGS:
Lubricated with grease.
NIPPLES:
The pump has special bearings, with dual closure and grease
in the interior, capable of working without outer grease
maintenance. The pump does not, therefore, have grease
nipples in the support.
Special attention must be paid to the type of
Note
bearing when this is replaced, which must be
of the same type (2RS).
Lubricated with grease PUMP WITH GREASE NIPPLES:
st
1 re-lubrication
The pump leaves the factory with the bearings greased for
approximately 1000 hours of operation. After this time (or one
year, whatever may occur first) proceed to first re-lubrication.
Check re-lubrication quantity in each greaser in the attached
chart
Subsequent re-lubrications
The periodicity for subsequent re-lubrications should be 4000
hours of operation or once a year (whatever may occur first).
Check re-lubrication quantity in each greaser in the attached
chart
Pump size
AU-80
AU-150
Grease change (re-filling)
Change grease after approx. 8000 hours of operation or once
every two years (whatever may occur first).
For complete grease change it is necessary first to dismantle
the bearings and carefully clean their positions in the support
in order to remove old grease.
Afterwards proceed to re-filling of grease up to approx. 75% of
the free space in the bearing and approx 40% of the free
space at bearing cover.
Type of grease:
We recommend using lytic-based lubrication grease with
antioxidant additives, of consistency 2, in line with DIN-51502
K2K.
Pumps lubricated with oil
The pump leaves the factory without oil in the bearings
support. Once installed, proceed to fill it.
Oil filling
- Release the support upper cap.
PUMP WITHOUT
AMOUNT OF GREASE [g]
6
25
AU
GREASE