Flowserve L Worthington Simpson - Manual (Page 24)

L and U USER INSTRUCTIONS ENGLISH 85392721 07-12
Page 24 of 36 flowserve.com
To clean the bearings:
a) Wipe off as much grease as possible with a clean
lint-free cloth.
b) Brush bearings with hot kerosene (80 to 90 °C/
175 to 195 °F) while gently spinning the outer
bearing ring.
c) Spin each ball to ensure that it is clean.
To remove badly oxidized grease that refuses to
come off:
a) Support the rotor in a vertical position and
immerse the bearing in hot kerosene or a mixture
of alcohol and light mineral solvent.
b) Gently spin the bearing outer ring.
c) Dry and reflush the bearing with clean light oil.
d) It is important not to under or over grease the
bearings as this will lead to overheating and
premature failure. It is recommended that the
bearings be filled with grease using a suitable
spatula. In addition the housings should be no
more than half filled.
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 gland can be backed off 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.
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.
6.2.6 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 – 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 x 4130 - complete set of gland packing
2 x 2450 - shaft sleeves
1 x 4590 - set of gaskets and seals
(optional: 2 x 4200 - mechanical seals)