Flowserve LPNV Worthington - Manual (Page 32)

LPNV USER INSTRUCTIONS ENGLISH 87900031 – 06/14
Page 32 of 48
If undersize or oversize rings are desired, the
amount of undersize or oversize required on the I.D.
or the O.D. must be stated by the customer in the
repair order
.
It is recommended as insurance against delays that
spare parts be purchased at the time the order for
the complete unit is placed or as soon after receiving
the pump as possible.
6.3.2 Storage of spares
Spares should be stored in a clean dry area away
from vibration. Inspection and re-treatment of
metallic surfaces (if necessary) with preservative is
recommended at 6 monthly intervals
6.4 Recommended spares (according to
API)
The severity of the conditions of service, the extent
to which repairs can be carried out in the field, and
the number of units installed will determine to a great
extent the minimum number of spare parts which
should be carried in stock at the site of the
installation.
The minimum spare parts for a pump of the LPNV
line should include the following:
For start up purposes:
1 – set of bearings
2 – sets of gaskets and o-ring
2 – set of wear rings (2 rotating + 2 stationary)
According to pump provision:
1 - set of mechanical seal or gland packing
For normal maintenance:
1 – set of bearings
2 – sets of gaskets and o-ring
2 – wear rings set (2 rotating + 2 stationary)
According to pump provision:
1 - set of mechanical seals or gland packing
1 – set of shaft sleeves
1 – set of bushings
1 – shaft
1 – impeller
6.5 Tools required
A typical range of tools that will be required to
maintain these pumps is listed below
Readily available in standard tool kits, and
dependent on pump size:
 Open ended spanners (wrenches) to suit up to
2” (M 50) screws/nuts
 Socket spanners (wrenches), up to 2” (M 50)
screws
 Allen keys, up to 10 mm (A/F)
 Range of screwdrivers
 Soft
mallet