Flowserve VTP Wet Pit - Manual (Page 48)

VERTICAL TURBINE PUMPS (VTPS) CENTRIFUGAL PUMPS ENGLISH 71569224 – 10-13
Page 48 of 76 flowserve.com
Routine inspection (daily/weekly) 6.2.1
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 lubrication oil.
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 operating correctly.
f) Refer to the manuals of any associated
equipment if routine checks needed.
Periodic inspection (every 6 Months) 6.2.2
a) Check foundation bolts for
security of attachment and corrosion.
b) Check pump operation hours to determine if
bearing lubricant shall be changed.
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.
Re-lubrication 6.2.3
Pump lubrication 6.2.3.1
In general, VTPs that are product lubricated will not
require further periodic lubrication. Stuffing box and
mechanical seal needs flow of flush. Enclosed line
shaft pumps have to be provided with the required oil
quantity for an oil lubed system and the injection lube
flow at the required pressure for injection lubed
systems.
Driver lubrication 6.2.3.2

Refer to driver manufacturer’s User
Instructions supplied with the pump.
Impeller re-adjustment 6.2.4
Ordinarily, impellers will not require re-adjustment if
properly set at initial installation.
All adjustments of the impellers will
change the seal setting, therefore, the seal must be
loosened from the shaft until the adjustment is
completed and then reset.
Maintenance of the stuffing box 6.2.5
General 6.2.5.1
Maintenance of the stuffing box will consist of greasing
the box when required, tightening the packing gland
occasionally as the leakage becomes excessive, and
installing new packing rings or sets as required.
Greasing the stuffing box 6.2.5.2
Under ordinary operation, once-a-month greasing of
the stuffing box will be adequate. A high quality
industrial grade # 2 grease is recommended.
Replacing packing 6.2.5.3
Remove gland and all old packing. If the box contains
a lantern ring, remove this and all packing below it
using two long threaded machine screws.
Inspect shaft or sleeve for score marks or rough spots.
Be sure by-pass holes (if supplied) are not plugged.
Repair or replace badly worn shaft or sleeve.
If wear is minor dress down until smooth and
concentric. Clean box bore.
Oil inside and outside of replacement rings lightly and
install in box, staggering joints 90 degrees. Be sure to
replace lantern ring in proper position when used.
Replace gland and tighten nuts finger tight. The
packing gland must never be tightened to the point
where leakage from the packing is stopped.
A small amount of leakage is required for packing
lubrication.
Packing ring sizes vary with the shaft diameter.
Packing ring size information are as follows.