Pre-Installation - Xylem CentriPro FM Serie Manual De Instrucciones

V. Pre-Installation
1. Maximum Water Temperature:
A) 35º C (95º F): 6" - 8" (5 - 150 hp) motors
2. PH content of the water between: 6.5–8
3. Maximum Chlorine Content: 4 PPM
Maximum Sulfuric Acid Iron Content: 15 PPM
Maximum Flourine Content: 0.8 PPM
Maximum Electric Conductivity: 118 μ MHO/INCH
4. Maximum Sand Content: 1,000 PPM
5. Proper approved three phase overload protection. Class 10, quick trip overloads are mandatory.
See Table 1 - 3, 7 - 9, or 10.
6. Proper fusing for motor circuit protection. See Table 4 - 6.
7. Proper Line Voltage During Running Conditions:
460V ±10%, i.e. 506 to 414 volts
230V ±10%, i.e. 253 to 207 volts
575V ±10%, i.e. 632.5 to 517.5 volts
For a 60 cycle system measured at motor lead wire terminal. (Voltage drop of cable should be
considered by user.)
Current unbalance between legs should not exceed 5% of the average.
8. Proper sizing of motor (current, thrust, voltage, etc.) and a 10 ft. clearance from the bottom of
the well are required.
9. In the case of horizontal installation, the motor is to be rigidly aligned with the pump and firmly
mounted to prevent any load on the shaft and bearings and to avoid any damaging vibrations to
the motor. Also, see #8 in Section II, Handling and Installation.
10. The motor must always be immersed in water so that a flow velocity of cooling water at a rate of
0.5 feet per second flows past any and all parts of the motor. The motor will not operate in mud
or sand.
11. The power cables shall be sized large enough so that at rated current there will be less than a 5%
voltage drop. Cables must be waterproof submersible type. See Tables 7 - 9.
12. For 3Ø motors a balanced and properly sized transformer bank shall be provided. Improper
electrical supply (for example, phase converter, V-connection transformer, etc.) or connections
will void the warranty. NOTE: For 3 phase 6" motors 5-30 hp 230/460 units come with voltage
change device. Be sure the proper Voltage Device is in place. (See separate page of instructions in
shipping documents.)
13. Single phase protection is recommended for protection of the installation. Any failure due to
single phasing of the incoming voltage causing the motor to fail will void the warranty.
14. Lightning arrestors are recommended in the interest of protecting the control panel, as well as the
insulation system of the motor. Any motor failure due to lightning or other Acts of God will void
the warranty.
15. Provide waterproof insulation splices between all lead wires and well cables.
16. In the event that a reduced voltage starter is used to start the motor, the following should be
verified:
A. Correct quick trip ambient compensated overloads are incorporated.
B. Proper short circuit protection is utilized.
C. The torque required by the motor and pump package is attainable by this type starter.
FM Series Motors Installation, Operation and Maintenance Manual

Pre-Installation

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