Pump Lubricants; Lubricating Oil - Flowserve WIK Series User Instructions

2) Start auxiliary or spare lube oil pump. Verify that
lube oil pressure indicator that is located
downstream of backpressure control valve reads
the same as in step 5 of section 5.1.2.4 above.
For further information on backpressure control
valve see manufacturer's data in section 10.
3) Start circulation of cooling water to applicable
units: heat exchangers, seal housings, and
driver. Verify flow. (To determine cooling
systems that are applicable to your pump, see
outline and piping drawings and your plant's
data files.)
4) Prime the pump as follows:
a) Open suction valve, allowing pump to begin
filling
b) Open valves in vent line to relieve vapors
keeping line open until all vapors escape
from both pump and suction line
c) Close all drain valves, except any
functioning as part of the warm-up circuit
To prevent exposing low pressure
ends of the casing to a pressure greater than
specified maximum suction pressure and resulting
pump damage, make certain that the suction valve is
always open before starting circulation in the warm-
up circuit, and that it remains open throughout the
warm-up procedure.
When venting or draining pumps which
contain toxic, flammable, and/or high
temperature fluids, ensure that the vented or
drained fluid is piped to a safe collector that will
prevent release of the fluid into the surrounding
area. Failure to do so can result in equipment
damage, personnel injury, or death.
A vent connection (or line) may not be
provided for pumps with top-mounted suction and
discharge nozzles, since vapors can escape through
the nozzles.
Never permit reverse warm-up flow to
cause rotation of the rotor. Rotation opposite of the
normal direction of rotation results in loosened nuts
on the shaft and possible pump damage. But if
warm-up flow is in the same direction as normal flow,
slow rotation of the shaft is not damaging, providing
that lube oil flow is maintained to the bearings and
turning gear speed is not exceeded.
The recommended warm-up rate is 28 to
42°C (50 to 75°F) per hour.
WIK USER INSTRUCTIONS ENGLISH BO2662 5/09
5) Start circulation in warm-up circuit and monitor
flow, temperature, and pressure (see your
plant's data file and Outline drawing in section 8).
6) Verify that all valves in minimum flow and
pressure reducing sleeve leak-off lines, when
installed (see your plant's data file or Outline
drawing in section 8), are fully open.
For pumps without case thermocouples,
surface pyrometers are recommended for
determining the case temperature specified in step 7.
Once a time is established for warm-up, pyrometers
need not be used for subsequent warm-ups,
providing that warm-up conditions remain relatively
the same.
7) Continue to warm the pump until differential
temperature between the top and bottom of case
decreases to 42°C (75°F), as indicated by
thermocouples, and the lower of the two
temperatures is within 42°C (75°F) of the stream
temperature to which the pump will be exposed
when operating. At this point the temperature of
the pump satisfies the condition for hot standby
or for being placed in operation. As an
alternative to this procedure, warm the pump for
the minimum time period determined by using
pyrometers.
8) With hand-operated valves still positioned as set
up above and spare or auxiliary lube oil pump
operating, place pump in operation according to
instructions that are given in
5.2

Pump lubricants

5.2.1

Lubricating oil

Operation of the unit without proper
lubrication can result in overheating of the
bearings, bearing failures, pump seizures and
actual breakup of the equipment, exposing
operating personnel to injury.
Remember that oil requires frequent replenishment
at normal operating temperatures and very frequent
replenishment at elevated operating temperatures.
Oil is always subject to gradual deterioration from
use and contamination from dirt and moisture. This
deterioration and contamination will, in time, be
harmful to the bearing and cause premature wear.
For this reason, oil should be checked for
contamination and deterioration regularly.
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