Sundyne LMV-333, Instruction And Operation Manual

Page: 11 / 67

5
III. STARTING
A. START-UP PROCEDURES
Perform the following tasks to start the Sundyne
pump.
1. Run-in or pump: If the pump is to be run
under conditions which are considerably
different from those conditions listed on the
spec sheet (such as a change in specific
gravity, suction pressure, flow rate, etc.) the
factory should be consulted to insure that
the run-in conditions are compatible with the
pump.
2. Check to insure that the driver has been
serviced according to instructions provided
by the driver manufacturer.
Check driver rotation prior to start. Driver
rotation must be in the direction of cast-in arrow
on the pump case. Rotation in reverse direction
will result in bearing damage.
3. Auxiliaries: Check utility connections; verify
that auxiliary piping is per Sundyne
drawings; verify switch and instrument
connections and set points; calibrate flow
instruments and other transmitters.
4. Flushing screens should be installed in all
field assembled piping connections.
5. Check the spec sheet and outline drawings
for seal environment requirements. Be sure
housing port piping is properly connected. If
double seals are used, buffer fluid must be
pressurized before suction pressure is
applied to the pump.
6. Check to ensure the diffuser cavity vent is
vented.
7. Remove the gearbox fill-vent plug and the
filter breather cap from the fill fitting on the
gearbox. Fill the reservoir with clean
lubricating oil (see section
“IV.
SERVICING”, Figure 3 for oil specifications)
until the fluid level is at the top of the black
circle in the sight glass. Lube system
capacity will vary with the heat exchanger
and piping configuration. The gearbox holds
approximately 7 quarts (6.6 liters). Replace
the filter breather cap on the fill opening
fitting and replace the fill-vent plug. If a
prelube pump is not used, remove the plug
on top of the oil filter manifold and fill the oil
filter and heat exchanger with oil.
8. If an auxiliary lube pump is installed, operate
the pump to fill the heat exchanger and filter.
Add oil as necessary through the fill fitting
until the oil level stabilizes in the site glass.
9. If no auxiliary lube pump is used, jog the
main driver until oil pressure is observed on
the pressure gauge. This should occur by
the second or third jog of 2-3 seconds
duration.
Never start the pump against a closed discharge
valve. Always check to insure that the discharge
valve is partially open.
10. If an auxiliary lube system is installed, it
should be used in the following manner:
A. At the initial start-up or after changing
the lube oil, run the pump for several
minutes to work any trapped air out of
the piping. Adjust the relief valve on the
auxiliary pump to provide 25 psi (1.76
kg/cm
2
) oil pressure to the system.
B. The auxiliary system is intended to
provide oil before starting the main
driver. It should run for a minimum of 30
seconds maintaining an oil pressure of 5
psig before the main driver is started.
Pressure switches and time delays can
be used if automatic start sequences
are desired.
C. After the start of the main driver, oil
pressure will be supplied by the main
lube pump inside the gearbox. An
increase in oil pressure should be
observed. Shut down the auxiliary pump
within two minutes of the main driver
start.
11. Adjust the heat exchanger cooling flow to
regulate the gearbox sump temperature
between 140° and 200°F ( 60° and 93°C).
Approximately one hour may be required to
stabilize the temperature.