Model lsn, Recommended spare parts, spare pumps, Faults - causes and solutions – Xylem LSNIH User Manual
Page 21: 1 spare parts, 2 stand-by pumps
Installation, Operating and Maintenance Instruction
Model LSN
LSN 100-english
page 19
Revision 01
Article No 771076024
Issue
01/2010
(161) should be checked after mounting the
impeller (230) and tightening the impeller nut (922)
(see chapter 8.7.1).
After the mounting of the back pull out assembly,
and its assembly into the volute casing, turn the
shaft and control the free moving of the pump in
this way. The shaft sealings will cause slightly
resistance when turning, but there must not be
any contact between metal parts.
Before starting the pump check alignment of the
coupling. This can be dropped on pumps with
spacer coupling, if pump casing and motor were
not disassembled.
Before starting the pump do not forget to fill in
oil!
Before starting the pump do not forget to install
and connect all security devices.
9. Recommended Spare Parts, Spare Pumps
9.1 Spare Parts
Spare parts should be selected to last for two-years
continuous operation. If no other guidelines are
applicable, we recommend that you stock the number
of parts listed below (in accordance with DIN 24296).
Number of pumps
(incl. stand-by pumps)
2 3 4 5 6/7 8/9 10/+
Spare Parts
Number of Spare Parts
Impeller
1
1
1
2
2
2
20%
Wear ring
2
2
2
3
3
4
50%
Shaft with key and nuts
1
1
1
2
2
2
20%
Ball Bearing set
1
1
2
2
2
3
25%
Shaft sleeve
2
2
2
3
3
4
50%
Lantern ring
1
1
2
2
2
3
30%
Packing ring
16
16
24
24
24
32 100%
Joints for pump casing
sets
4
6
8
8
9
12 150%
other joints sets
4
6
8
8
9
10 100%
Mech. Seals
set
1
1
2
2
2
3
25%
Bearing (lantern with
bearing bracket,
complete with shaft,
bearings, aso.)
-
-
-
-
-
-
2
To ensure optimum availability, we recommend
that suitable quantities of spare parts are held in
stock, especially if these are made from special
materials and in the case of mechanical seals,
because of the longer delivery times.
Spare Parts Order
When ordering spare parts, please supply the
following information:
Type:
______________________________________________________________________
S/N (Order No.):
_
___________________________________________________
Part name:
_____________________________________________________________
Sectional Drawing
__________________________________________________
All the information is given in the data sheet and the
relevant sectional drawing.
Store spare parts in dry and clean rooms!
9.2 Stand-by pumps
It is essential that a sufficient number of stand-
by pumps are kept ready for use in plants where
failure of a pump could endanger human life or
cause damage to property or high costs.
Regular checks should be carried out to ensure
that such pumps are always ready for use (see
chapter 6.8).
Store stand-by pumps according to chapter 6.8.
10. Faults - Causes and Solutions
The following notes on causes of faults and how to
repair them are intended as an aid to recognising the
problem. The manufacturer's Customer Service
Department is available to help repair faults that the
operator cannot or does not want to repair. If the
operator repairs or changes the pump, the design data
on the Data Sheet and chapter 2 of these Operating
Instructions should be particularly taken into account.
If
necessary,
the
written
agreement
of
the
manufacturer must be obtained.