Xylem IM117 R01 5 and Larger Submersible Pump - Manual (Page 7)

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Three phase submersible motors require Class 10 Quick-Trip
overload protection. Use Furnas Class 14 NEMA starters
with ESP100 adjustable Class 10 overloads. You can also
use Furnas Class 16 starters with ambient compensated “K”
heaters (overloads) which you install in the starter. “K” heat-
ers must be purchased separately. Consult the ITT MAID or
F.E. AIM manual for other acceptable overload protection
devices.
Note: when replacing a line shaft turbine or other above
ground pump with a submersible you must change the Class
20 overloads in the starter to Class 10 quick-trip’s for proper
motor overload protection. Use of Class 20 overloads voids
the submersible motor warranty.
Three phase installations must be checked for motor rotation
and phase unbalance. To reverse motor rotation switch (re-
verse) any two power leads. See the instructions for check-
ing three phase unbalance in the Technical Section of this
manual. Failure to check and correct three phase unbalance
can cause premature motor failure and nuisance overload
tripping.
4.0 OPERATE PUMP
4.1 Throttling Discharge on Start-Up
If the pump will be started or operated with an “open”
discharge you must throttle the discharge before start-up.
Install a ball, globe, or Cla-valve ® in the discharge line. Open
the valve to approximately 1 ⁄
3
open on system start-up. This
will prevent upthrust damage to the pump and motor
bearings. You can open the valve when you get a good steady
stream of water. Do not exceed the maximum operating
range in gpm shown on the pump curve. If you do not know
the maximum gpm for the pump, call the distributor who
sold you the pump. Starting or running a pump with little or
no head is a major cause of premature failure.
4.2 Throttling a High Static Level Well to
Prevent Upthrust
A high static water level well may allow a pump to operate
off the right side of the curve or outside the “Recommended
Range” shown on the pump curve. We recommend using a
“Dole ® ” flow restrictor or throttling the discharge with a ball
valve to prevent upthrust damage to the pump and motor.
The maximum flow must be within the pumps recommended
operating range. If you use a ball valve, set it and remove the
handle, tape the handle to the pipe. Tag the valve with a note
saying, “Do not open this valve or pump may be damaged”.
You can set the valve by installing a pressure gauge between
the well and the valve and throttling the flow/head to a value
within the recommended range. You can also throttle by de-
termining the actual flow rate, see “Determining Flow Rates”
in your catalog Technical Section.
4.3 Start the Pump
Partially open a valve (boiler drain or faucet) in the system
and turn the breaker to the ON position. Allow the pump
to run until the water is clear. On three phase systems verify
rotation, correct rotation will yield the highest flow and
pressure.
Check amps and insure they are within nameplate amp range
from motor data sheet or motor nameplate. Amps should be
between Rated Input and Service Factor Amps. High amps
may be caused by low or high voltage. Enter the amp read-
ings in this manual along with the pump and motor model
numbers and serial numbers. On all three phase systems a
three phase unbalance test must be performed to insure a
balanced power supply. Leave a copy of the 3Ø unbalance
worksheet with this IOM at the job site for future reference.
On pressure tank/switch systems only – close the valve when
the water clears and allow the pressure to build. If properly
adjusted the switch should turn the pump off at the preset
pressure. Open a few outlets and allow the pump to run
through a few cycles. Check switch operation and verify that
pressure settings are correct. Check all fittings for leaks.
On manual systems, turn the pump off.
5.0 PAPERWORK AND IOM
Please give this IOM and your business card to the owner.
A sticker with your name and phone number on the tank or
control box is a great sales tool for future business!
Congratulations on completing a professional installation of
a submersible pump.
6.0 ACCESSORIES
Pressure Tanks
Tanks should be sized to allow pumps over two (2) hp to run
at least 2 minutes. If the pump averages 80 GPM it requires
tanks to provide a 160 gallon “drawdown”. See your Water
Products catalog for pressure tank data.
Low Water Protection
A low yield well should have low water protection added
to the system. Contact your distributor for information on
SymCom low water protection devices.
Electrical Panels
Customer Service will quote custom pump control panels.
Please send written panel specifications to your authorized
distributor. They will forward it to the Customer Service
Group that supports their product line. Written specifications
should include pump HP, Voltage, Phase, desired NEMA en-
closure type, sequence of operation, special options needed,
and a brief statement describing any special logic for alarms,
timers, or duplexing features. The name and number of a
contact person to answer questions is also appreciated and
will speed your quote.
4.0 OPERATE PUMP
5.0 PAPERWORK AND IOM
6.0 ACCESSORIES