Flowserve LNGT - Manual (Page 30)

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08
Page 30 of 48
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6.2.2 Periodic inspection [six monthly]
a) Check foundation bolts for
security of attachment and corrosion.
b) Check pump running records for hourly usage
to determine if bearing lubricant requires
changing.
c) The coupling should be checked for correct
alignment and worn driving elements.
Refer to the manuals of any associated
equipment for periodic checks needed.
6.2.3 Re-lubrication
Lubricant and bearing temperature analysis can be
useful in optimizing lubricant change intervals. In
general however, the following is recommended.
6.2.3.1 Oil lubrication
Maintaining the correct oil level is
very important.
If the pump is supplied with a constant level oiler
the oil level will be automatically maintained and as
long as oil is visible in the glass bottle there is no
need to refill. If however a sight glass has been
fitted then regular checks should be made to
ensure the level is maintained at the centre of the
glass window.
Refer to section 5.1.1 for methods of oil fill, section
5.2.1 for oil grade recommendations and 5.7.4 for
the schedule and temperature limits.
6.2.3.2 Grease lubrication
See section 5.2.2 for grease
recommendations.
Regrease - via grease nipples every 2 000 hours
or sooner depending on the severity of the
application.
6.2.4 Mechanical seals
No adjustment is possible. When leakage reaches
an unacceptable level the seal will need
replacement.
6.2.5 Gland packing
The stuffing box split gland can be completely
removed for re-packing or to enable the addition of
extra rings of packing.
The stuffing box is normally supplied with a lantern
ring to enable a clean or pressurized flush to the
centre of the packing. If not required, this can be
replaced by an extra two rings of packing.
There must always be a small leakage, normally a
minimum of 120 drops per minute to atmosphere to
lubricate and cool the packing is required.
6.3 Spare parts
6.3.1 Ordering of spares
Flowserve keep records of all pumps that have
been supplied. When ordering spares the following
information should be quoted:
1) Pump serial number.
2) Pump
size.
3) Part name – taken from section 8.
4) Part number – taken from section 8.
5) Number of parts required.
The pump size and serial number are shown on the
pump nameplate.
To ensure continued satisfactory operation,
replacement parts to the original design
specification should be obtained from Flowserve.
Any change to the original design specification
[modification or use of a non-standard part] will
invalidate the pump’s safety certification.
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 and
consumable items
For start up purposes:
1 - complete set of gland packing [if applicable]
1 - basic mechanical seal [if applicable]
1 - set of gaskets and O-rings
optional: 2 - mechanical seals
For 2 years operation:
1 - set of bearings [journal and thrust]
1 - set of gland packings [if applicable]
2 – lantern rings [if applicable]
2 - basic mechanical seals [if applicable]
2 – set of shaft sleeves
2 - set of gaskets and O-rings
2 – set of casing wear rings
2 – set of impeller wear rings [if applicable]