Flowserve LN - Manual (Page 20)

LN, LNE, LNH, LNV, LNEV, LNC and LNEC USER INSTRUCTIONS ENGLISH 71576423 11-09
Page 20 of 32 flowserve.com
k) Check dirt and dust is removed from areas
around close clearances, bearing housings and
motors.
l) Check coupling alignment and re-align if
necessary.
m) Verify the correct operation of the system.
The equipment used for maintenance and
disassembly in an ATEX zone must be in conformity
with the requirements zone.
Our specialist service personnel can help with
preventative maintenance records and provide
condition monitoring for temperature and vibration to
identify the onset of potential problems.
If any problems are found the following sequence of
actions should take place:
a) Refer to section 7, Faults; causes and remedies,
for fault diagnosis.
b) Ensure equipment complies with the
recommendations in this manual.
c) Contact Flowserve if the problem persists.
6.2.1 Routine inspection (daily/weekly)
The following checks should be made
and the appropriate action taken to remedy any
deviations:
a) Check operating behavior. Ensure noise,
vibration and bearing temperatures are normal.
b) Check that there are no abnormal fluid or
lubricant leaks (static and dynamic seals) and
that any sealant systems (if fitted) are full and
operating normally.
c) Check that shaft seal leaks are within acceptable
limits.
d) Check the level and condition of oil lubricant.
On grease lubricated pumps, check running
hours since last recharge of grease or complete
grease change.
e) Check any auxiliary supplies eg heating/cooling,
if fitted, are functioning correctly.
Refer to the manuals of any associated
equipment for routine checks needed.
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 Mechanical seals
When leakage becomes unacceptable the seal will
need replacement.
6.2.4 Gland packing
The stuffing box gland can be withdrawn for re-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 pressurised flush to the
centre of the packing. If not required, this can be
replaced by an extra two rings of packing.
6.2.5 Internal coating
If the pump has an internal coating, this coating must
be inspected periodically. Any wear or cracks of the
coating found must be immediately repaired. Failure
to do this may lead to accelerated wear of the coating
during operation and corrosion of the exposed base
metal, depending on the material and pumped liquid.
Special attention must be paid to the coating edges.
Any loss of coating material is considered to be
normal wear and tear on the pump and is not
considered as warranty. Flowserve has applied the
coatings according to the supplier's instructions but
will not be held responsible for coating wear or cracks
that may develop over time.
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
4) Part number
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.