Flowserve LPNV Worthington - Manual (Page 31)

LPNV USER INSTRUCTIONS ENGLISH 87900031 – 06/14
Page 31 of 48
g) Check any auxiliary supplies as heating/cooling
(if fitted) are functioning correctly.
h) Check stand by pump is at applicable
temperature and available to start as required.

Refer to the manuals of any associated
equipment for routine checks needed.
6.2.2 Periodic inspection (monthly)
a) Check for lubricant contamination whether
bearing oil, or seal oil (if applicable) by sample
analysis.
b) Check all paint or protective coatings.
c) Check all power/instrument cable glands for
tightness.

Refer to the manuals of any associated
equipment for periodic checks needed.
6.2.3 Periodic inspection (six monthly)
a) Check foundation bolts for
security of attachment, corrosion. Check
grouting for looseness, cracking or general
distress.
b) Change lubricants.
c) Check unit alignment
d) Check calibration of instruments.
e) The coupling should be checked for correct
alignment and worn driving elements.

Refer to the manuals of any associated
equipment for periodic checks needed.
6.2.4 Inspection (after 3 years)
a) Check internal condition of pump and all
ancillary pipework for corrosion/erosion.
b) Check internal pump components for wear.
c) Change
bearings
d) Check calibration of instruments.
e) Check coupling teeth or discs for wear.
6.2.5 Re-lubrication
Lubricant and bearing temperature analysis can be
useful in optimizing lubricant change intervals.
In general however, the following is recommended.
6.2.5.1 Oil lubrication (if provided)
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 center of the glass window.
Refer to the instructions of this manual for methods
of oil fill, for oil grade recommendations and for the
schedule and temperature limits.
6.2.6 Mechanical seals (for pumps with
mechanical seal)
No adjustment is possible. When leakage reaches
an unacceptable level the seal will need
replacement.
6.2.7 Gland packing (for pumps with gland seal)
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
center of the packing. If not required, this can be
replaced by an extra 2 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 (a)
4) Part number (a)
5) Number of parts required
(a) Taken from the cross section drawing stored into
the job user instruction book and only in case not
available see at section 8.
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-genuine part) will
invalidate the pump’s safety certification.
If rings are ordered as repair parts after
the pump has been put into service:
-
Fully machined stationary rings
- Oversized impeller rings
will be furnished as standard unless differently
requested by the customer.