Xylem IMDWT R02 Model DWT Deep Well Turbine Pumps - Manual (Page 18)

18
Pump Startup And Operation
PrE-STArT ProCEdUrE
Consult the applicable manufacturer’s instructions for
detailed information for the prime mover (electric motor,
engine or steam turbine), coupling, driveshaft, gear
driver. Prior to startup, check the following.
1. Confirm that the following procedures described
in the “Installing the Drivers” sections have been
performed:
A. Wiring of Driver.
B. Driver must rotate counterclockwise (CCW)
when viewed from above.
Do not check motor rotation unless motor
is bolted to pump and drive coupling is
removed.
Be sure to install the coupling guards
around all exposed shafts and couplings
before start up of the pump. Failure to comply may
result in sever personnel injury or death.
C. Check alignment of pump and driver.
D. Impeller adjustment has been made.
2. For open lineshaft pump, make sure the stuffing box
bleed line is connected (if applicable). For enclosed
lineshaft pump, make sure the oil lubrication
piping is connected and oil reservoir filled with the
recommended oil. (See pages 19 and 20.)
3. For open lineshaft pump, when a static water
level exceeds 30 feet (9 meters), pre-lubrication is
necessary. If it is equipped with a prelube system
supplied from a pressurized header, open the supply
valve and allow the prelube water to flow for 15
seconds plus 15 seconds per 100 feet (30 meters)
of pump setting. If it is equipped with a tank type
prelube system, open the valve between the prelube
tank and the pump and allow approximately half of
the water in the tank to run into the pump before
starting the pump. The pre-lube valve should remain
open during the start up.
Column required Pre-Lub
Size Tank Capacity Pipe &
(Nom. in.) (Gallons) Valve Size
3, 4
10 gal. Per 100 ft. depth
1"
to static water level
5, 6
25 gal. Per 100 ft. depth
1½"
to static water level
8, 10, 50 gal. Per 100 ft. depth
1½"
12, 14 to static water level
4. For oil lubricated pump, clean and fill the lubricator
tank with recommended oil. (See pages 19 and 20.)
Manually open the lubricator valve and allow oil
to run into the shaft enclosing tube for at least 20
minutes for each 100 feet (30 meters) of setting
prior to start up. Then, adjust the lubricator for the
proper drops per minutes according to the following
table:
Shaft Size Basic drops Additional drops
(in.) per minute
per minute per
100 ft. setting
0.75 - 1.18 5 2
1.50 - 1.68 7 3
1.94 - 2.43 10 4
2.68 and larger 12 5
On the system equipped with a solenoid operated
lubricator valve that cannot be energized
independently, it will be necessary to remove the
valve stem to allow the oil to flow into the tube. If
the start up is delayed or the pump has been shut
down for over 150 hours, the lubrication procedure
must be repeated just prior to actual start up.
5. Open the air release system isolation valve.
Adjusting the air release system throttling device so
that is partially open, It should not be closed or fully
open.
NOTE: Not exhausting the air or exhausting it too fast
can damage the pump.
6. All connections to driver and starting device must
match wiring diagram. Voltage, phase and frequency
on motor nameplate must agree with line current.
7. Rotate shaft manually to ensure impellers are not
binding.
8. Verify that driver bearings are properly lubricated
and check oil level in housing.
9. Inspect discharge piping connection, valves and
pressure gauges for proper operation.
PUMP STArTUP
1. Partially close the valve in the discharge line.
2. Start the pump. If any abnormal noises, jerking
or vibration is noted, stop the pump immediately,
determine the cause of the abnormalities and correct
them.
3. After the pump is operating at full speed, slowly
open discharge valve. If driver overheats or there is
excessive vibration, stop the pump, determine the
causes and correct them.
4. If the air release valve is manually operated, close it.
Pump Startup And Operation
WARNING
WARNING