Grundfos SP4 Bedienungsanleitung

GRUNDFOS INSTRUCTIONS

US Installation and operating instructions

SP4”

4-Inch Stainless Steel

Submersible Pumps

Please leave these instructions with the pump for future reference.

WATER QUALITY

DRINKING WATER

SYSTEM COMPONENTS

ANSI/NSF 61

65 GM

30°C/86°F

PUMP END ONLY

SAFETY WARNING

WARNING: Reduced risk of electric shock during operation of this pump requires the

provision of acceptable grounding. If the means of connection to the supply connected

box is other than grounded metal conduit, ground the pump back to the service by

connecting a copper conductor (at least the size of the circuit supplying the pump) to the

grounding screw provided within the wiring compartment.

NOTICE: This product is designes for pumping water only.Third party agency

evalustions are based on pumping water only.

Pre-Installation Checklist

1. Well Preparation

If the pump is to be installed in a new well then the well should be fully developed and bailed

or blown free of cuttings and sand. The stainless steel construction of the GRUNDFOS

submersibles make it resistant to abrasion; however, no pump made of any material can

forever withstand the destructive wear that occurs when constantly pumping sandy water.

If this pump is used to replace an oil-filled submersible or oil-lubricated line-shaft turbine in

an existing well, the well must be blown or bailed clear of oil.

2. Make Sure You Have The Right Pump

Determine the maximum depth of the well, and the draw-down

level at the pump’s maximum capacity. Pump selection and

setting depth should be based on this data.

3. Pumped Fluid Requirements

CAUTION: Submersible well pumps are designed for pumping

clear, cold water; free of air or gases. Decreased pump

performance and life expectancy can occur if the water is not

cold, clear or contains air or gasses.Water temperature should

not exceed 102°F.

A check should be made to ensure that the installation depth of

the pump will always be at least three feet below the maximum

drawdown level of the well.The bottom of the motor should

never be installed lower than the top of the screen or within five

feet of the well bottom.

Ensure that the requirement for minimum flow past the motor is

met, as shown in the table below:

NOTES: For proper motor cooling, a flow inducer

or sleeve must be used if the water enters the

well above the motor or if there is insufficient

water flow past the motor.The minimum water

velocity past 4” motors is 0.25 feet per second.

Minimum Water Flow Requirements for

Submersible Pump Motors

MINIMUM CASING OR SLEEVE MIN. GPM FLOW

DIAMETER I.D. IN INCHES PASSING THE MOTOR

4-Inch 4 1.2

5 7

6 13

7 21

8 30

4. Splicing the Motor Cable

If the splice is carefully made, it will be as efficient as any other portion of the cable, and

will be completely watertight.There are a number of cable splicing kits available today –

epoxy filled, rubber-sealed and so on. Many perform well if the manufacturer’s directions

are followed carefully. If one of these kits is not used, we recommend the following

method for splicing the motor cable.

Examine the motor cable and drop cable carefully for damage. Cut the motor leads

off in a staggered manner. Cut the ends of the drop cable so that the ends match up

with the motor leads. Be sure to match the colors. Strip back and trim off one-half inch

of insulation from each lead, making sure to scrape the wire bare to obtain a good

connection. Be careful not to damage the copper conductor when stripping off the

insulation. Insert a properly sized Sta-kon-type connector on each pair of leads, again

making sure that colors are matched. Using Sta-kon crimping pliers, indent the lugs. Be

sure to squeeze down hard on the pliers, particularly when using large cable. Form a

piece of electrical insulation putty tightly around each Sta-Kon.The putty should overlap

on the insulation of the wire. Use a good quality tape such as #33 Scotch Waterproof

or Plymouth Rubber Company Slipknot Grey.Wrap each wire and joint tightly for a

distance of about 2-1/2 inches on each side of the joint. Make a minimum of four passes

over each joint and overlap each pass approximately one inch to assure a completely

watertight seal.

INSTALLATION PROCEDURES

1. Attach the Pump to the Motor

When attaching the pump to the motor we recommend the pump be bolted down in a

cross pattern around the four bolts. Starting from the back (opposite the cable opening)

and using a cross pattern, tighten the motor bolts to 13.5 ft-lbs, using progressive

tightening until torque is met. (See figure 1 for example).

PRE-INSTALLATION CHECKLIST

cable opening

Figure 1

INSTALLATION PROCEDURES

2. Attach the Pump to the Pipe

A back-up wrench should be used when riser pipe is attached to the pump.The pump

should only be gripped by the flats on the top of the discharge chamber. Under no

circumstances grip the body of the pump, cable guard or motor. When tightened down,

the threaded end of the first section of the riser pipe or the nipple must not come in

contact with the check valve retainer in the discharge chamber of the pump. After the

first section of the riser pipe has been attached to the pump, the lifting cable or elevator

should be clamped to the pipe. Do not clamp the pump.When raising the pump and

riser section, be careful not to place bending stress on the pump by picking it up by

the pump-end only. It is recommended that plastic-type riser pipe be used only with the

smaller domestic submersibles. The manufacturer or representative should be contacted

to ensure the pipe type and physical characteristics are suitable for this use. Use the

correct joint compound recommended by the specific pipe manufacturer. Besides making

sure that points are fastened, we recommend the use of a torque arrestor when using

plastic pipe.

3. Lower the Pump Into the Well

Make sure the electrical cables are not cut or damaged in any way when the pump is

being lowered in the well. Do not use the power cables to support the weight of the pump.

To protect against surface water entering the well and contaminating the water source,

the well should be finished off above grade utilizing a locally approved well seal or

pitless adaptor unit.We recommend that steel riser pipes always be used with the larger

submersibles. A pipe thread compound should be used on all joints. Make sure that the

joints are adequately tightened in order to resist the tendency of the motor to loosen the

joints when stopping and starting.

The drop cable should be secured to the riser pipe at approximately every 10 ft/3 m to

prevent sagging, looping and possible cable damage. Nylon cable clips or waterproof tape

may be used. The cable splice should be protected by securing it with clips or tape just

above each joint.

Figure 2 Figure 3

Check Valves: A check valve should always be installed at the surface of the well and one

at a maximum of 25 feet above static water level. In addition, for installations deeper than

200 feet, check valves should be installed at no more than 200 foot intervals.

IMPORTANT: Plastic pipe tends to stretch

under load.This stretching must be taken

into account when securing the cable to the

riser pipe. Leave three to four inches of slack

between clips or taped points.This tendency

for plastic pipe to stretch will also affect the

calculation of the pump setting depth. As a

general rule, you can estimate that plastic

pipe will stretch to approximately 2% of its

length.When plastic riser pipe is used, it is

recommended that a safety cable be attached

to the pump to lower and raise it.The

discharge chamber of GRUNDFOS 4-inch

submersibles is designed to accommodate

this cable. (See Figures 2 & 3.)

4. Electrical Connections

WARNING: Reduced risk of electric shock during operation of this pump requires

the provision of acceptable grounding. If the means of connection to the supply

connected box is other than grounded metal conduit, ground the pump back to the

service by connecting a copper conductor (at least the size of the circuit supplying

the pump) to the grounding screw provided within the wiring compartment.

Verification of the electrical supply should be made to ensure the voltage, phase and

frequency match that of the motor. Motor electrical data can be found on page 6. If

voltage variations are larger than ± 10%, do not operate the pump. Single-phase motor

control boxes should be connected as shown on the wiring diagram mounted on the

inside cover of the control box supplied with the motor. The type of wire used between

the pump control boxes should be approved for submersible pump application.The

conductor insulation should be type RW, RUW, TW or equivalent.

A high-voltage surge arrestor should be used to protect the motor against lightning and

switching surges. Lightning voltage surges in power lines are caused when lightning

strikes somewhere in the area. Switching surges are caused by the opening and closing

of switches on the main high-voltage distribution power lines.

The correct voltage-rated surge arrestor should be installed on the supply (line) side

of the control box or starter (See Figure 4a & 4b).The arrestor must be grounded in

accordance with the National Electric Code and local governing regulations.

PUMPS SHOULD NEVER BE STARTED UNLESS THE PUMP IS TOTALLY

SUBMERGED. SEVERE DAMAGE MAY BE CAUSED TO THE PUMP AND MOTOR IF

THEY ARE RUN DRY.

The control box shall be permanently grounded in accordance with the National

Electric Code and local governing codes or regulations.The ground wire should be a

bare stranded copper conductor at least the same size as the drop cable wire size.

Ground wire should be as short a distance as possible and securely fastened to a true

grounding point.True grounding points are considered to be: a grounding rod driven into

the water strata; steel well casing submerged into the water lower than the pump setting

level; and steel discharge pipes without insulating couplings. If plastic discharge pipe and

well casing are used, a properly sized bare copper wire should be connected to a stud

on the motor and run to the control panel. Do not ground to a gas supply line. Connect

the grounding wire to the ground point first, then to the terminal in the control box.

Figure 4a Figure 4b

Single Phase Hookup Three Phase Hookup

INSTALLATION PROCEDURES

Single-Phase 2-Wire Wiring Diagram

for Submersible Motors Three-Phase Wiring Diagram

for Submersible Motors

4. Starting the Pump for the First Time

A. Attach a temporary horizontal length of pipe to the riser pipe.

B. Install a gate valve and another short length of pipe to the temporary pipe.

C. Adjust the gate valve one-third of the way open.

D. Verify that the electrical connections are in accordance with the wiring diagram.

E. After proper rotation has been checked, start the pump and let it operate until the

water runs clear of sand, silt and other impurities.

F. Slowly open the valve in small increments as the water clears until the valve is all

the way open.The pump should not be stopped until the water runs clear.

G. If the water is clean and clear when the pump is first started, the valve should still

be opened until it is all the way open.

Single-Phase 3-Wire Control Box

for Submersible Motors

INSTALLATION PROCEDURES

MOTOR INFORMATION

Grundfos motors specifications

1- Phase motors

3-Phase motors

HP Ph Volt Service

factor

Amperage Full load Max.

thrust

(lbs)

KVA

code Nameplate

no.

SF Start Eff. (%) Pwr fact.

4-inch, single phase, 2-wire motors (control box not required)

1/3 1 230 1.75 4.6 25.7 59 77 900 S 79952101

1/2 1 115 1.60 12.0 55 62 76 900 R 79922102

1/2 1 230 1.60 6.0 34.5 62 76 900 R 79952102

3/4 1 230 1.50 8.4 40.5 62 75 900 N 79952103

1 1 230 1.40 9.8 48.4 63 82 900 M 79952104

1 1/2 1 230 1.30 13.1 62 64 85 900 L 79952105

4-inch, single phase, 3-wire motors

1/3 1 115 1.75 9.0 29 59 77 900 M 79423101

1/3 1 230 1.75 4.6 14 59 77 900 L 79453101

1/2 1 115 1.60 12.0 42.5 61 76 900 L 79423102

1/2 1 230 1.60 6.0 21.5 62 76 900 L 79453102

3/4 1 230 1.50 8.4 31.4 62 75 900 L 79453103

1 1 230 1.40 9.8 37 63 82 900 K 79453104

1.5 1 230 1.30 11.6 45.9 69 89 900 H 79453105

2 1 230 1.25 13.2 57 72 86 1500 G 79454506

3 1 230 1.15 17.0 77 74 93 1500 F 79454507

5 1 230 1.15 27.5 110 77 92 1500 F 79454509

HP Ph Volt Service

factor

Amperage Full load Max.

thrust

(lbs)

KVA

code Nameplate

no.

SF Start. Eff. (%) Pwr fact.

4-inch, three phase, 3-wire motors

1 1/2 3

230 1.30 7.3 40.3 75 72 900 K 79302005

460 1.30 3.7 20.1 75 72 900 K 79362005

575 1.30 2.9 16.1 75 72 900 K 79392005

230 1.25 8.7 48 76 75 900 J 79302006

460 1.25 4.4 24 76 75 900 J 79362006

575 1.25 3.5 19.2 76 75 900 J 79392006

230 1.15 12.2 56 77 75 900 H 79302006

460 1.15 6.1 28 77 75 900 H 79362007

575 1.15 4.8 22 77 75 900 H 79395507

208/230 1.15 18.6/17.4 108 80 82 1500 H 79304509

440/460 1.15 8.65/8.65 54 80 82 1500 H 79354509

575 1.15 7.9 54 80 82 1500 H 79394509

7 1/2

208/230 1.15 27.0/25.0 130 81 82 1500 H 79305511

440/460 1.15 12.8/12.6 67 81 82 1500 J 79355511

575 1.15 10.6 53 81 82 1500 J 79395511

10 3

440/460 1.15 18.0/18.6 90 81 80 1500 H 79355512

575 1.15 14.4 72 81 80 1500 H 79395512

Line-to-Line

resistance ( )

Blk-Yel Red-Yel

6.8-8.2

1.1-1.3

5.2-6.3

3.2-3.8

2.5-3.1

1.9-2.3

1.55-1.9 2.4-3

6.8-8.3 17.3-21.1

0.9-1.1 1.9-2.35

4.7-5.7 15.8-19.6

3.2-3.9 14-17.2

2.6-3.1 10.3-12.5

1.9-2.3 7.8-9.6

1.5-1.8 3.4-4.1

1.2-1.4 2.45-3

0.65-0.85 2.1-2.6

Line-to-Line

resistance ( )

Blk-Yel Red-Yel

3.9

15.9

25.2

3.0

12.1

18.8

2.2

9.0

13.0

1.2

5.0

7.3

0.84

3.24

5.2

1.16

1.84

1/3

1/2

3/4

1.5

MS402B

MS4000

SA-SPM5

GRUNDFOS

MOTOR MODEL

GRUNDFOS

CONTROL BOX

GRUNDFOS

STANDARD #’s

GRUNDFOS

RUN CAP/DELUXE #’s

RATING

GRUNDFOS Control Box SA-SPM5

VOLT

115

230

115

230

91126150

91126151

91126152

91126153

91126154

91126155

91126212

91126214

91126216

91126218

–

91126211

91126213

91126215

91126217

91126219

*All Grundfos 4” motors have a ground (green wire)

The key to long submersible motor life is good cooling. Most submersible pumps rely

on moving heat away from the motor by forced convection.The ambient/produced

fluid is typically drawn by the motor in the course of pumping to accomplish this task.

Submersible motors used in the water supply industry are typically designed to operate

at full load in water up to 30°C (86°F), provided the flow velocity can be maintained at a

minimum of 0.5 feet per second (fps).

Required Cooling Flow and Velocity

AWWA specifications state the maximum motor diameter and the minimum inside

diameter of the well shall be in such relationship that under any operating condition the

water velocity past the motor shall not exceed 12 fps (3.7 m/s) nor be less than 0.5 fps

(0.15 m/s).The AWWA specification are principally applicable to motors 6-inch and larger,

as most 4-inch motor designs are based on a minimum cooling flow velocity of 0.25 fps

(0.08 m/s) at rated ambient temperature.Table 8 relates flow, casing and motor size

requirements to accomplish minimum cooling velocity.

Table 8: Minimum Submersible Cooling Flow Requirements

Casing/Sleeve 4” Motor 6” Motor

I.D. (inches) (0.25 fps) (0.5 fps)

4 1.2 –

5 7.0 –

6 13 9

7 20 25

8 30 45

10 50 90

12 80 140

14 110 200

16 150 280

18 – 380

Notes: 1. Minor irregularities associated with motor shape and diameter variations

between manufactures are not accounted for in the table.

2. At the velocity specified in the table the temperature differential between

the motor surface and ambient water will range from 5° - 15°C (10-30°F).

MOTOR INFORMATION

(gpm)

Some submersible motor manufactures require no cooling fluid flow past the motor,

when the produced fluid temperature is 20°C (68°F) or less. Cooling by free convection

in such cases, is only permitted in the vertical position and is contingent on no adverse

operating conditions present such as; poor power, high stop/start frequency, presence

of incrustating deposits on the motor surface, etc. Detramental operating conditions are

difficult to identify or predict, and for this reason, the minimum cooling flow should be

provided whenever possible - regardless of the ambient fluid temperature.

MOTOR INFORMATION

Typical Motor Jacket/Shroud Configurations.

The motor shroud is generally of the next nominal diameter of standard pipe larger than

the motor or the pump, depending on the shroud configuration used.The tubular/pipe

material can be plastic or thin walled steel (corrosion resistant materials preferred).The

cap/top must accommodate power cable without damage and provide a snug fit, so that

only a very small amount of fluid can be pulled through the top of the shroud.The fit

should not be completely water tight as ventilation is often required to allow escape of the

air or gas that might accumulate.The shroud body should be stabilized to prevent rotation

and maintain the motor centered within the shroud.The shroud length should extend to a

length of 1-2 times the shroud diameter beyond the bottom of the motor when possible.

Shrouds are typically attached immediately above the pump intake or at the pump/column

correction.

A typical motor sleeve/shroud selection example is sited below and illustrated in Figure 8:

If a well feeds water from above the pump, has a casing/chamber too small to allow a

motor jacket/sleeve on the pump, and does not have adequate level and flow to allow

raising the pump above the inflow, it is difficult to properly cool the motor.When possible,

the casing depth should be increased to allow flow to come from below the motor. If this is

not practical, adequate flow past the motor can usually be attained by employing a motor

jacket with a stringer pipe or by using a jet tube.

Figure 8: Typical Motor Jacket Installation Scenarios

Pump

Top of Sleeve

Closed and

Clamped or

Bolted to Pump

Above Intake

Flow Inducer

Sleeve

Spacers at 3 or

4 Points Around

the Inside of

the Sleeve are

Recommended to Hold

Motor Centered and Avoid

Loosening Top During Installation

Pump Intake

Motor

All Water Flows

Past Motor

Casing

Fluid Entry

Pump

Jacket

Motor

Typical Flow Inducer Sleeve Cutaway View

Single-Phase 60 Hz

MOTOR RATING COPPER WIRE SIZE (AWG)

VOLTS HP 14 12 10 8 6 4 2 0 00

115 1/3 130 210 340 540 840 1300 1960 2910

1/2 100 160 250 390 620 960 1460 2160

230 1/3 550 880 1390 2190 3400 5250 7960

1/2 400 650 1020 1610 2510 3880 5880

3/4 300 480 760 1200 1870 2890 4370 6470

1 250 400 630 990 1540 2380 3610 5360 6520

1-1/2 190 310 480 770 1200 1870 2850 4280 5240

2 150 250 390 620 970 1530 2360 3620 4480

3 120 190 300 470 750 1190 1850 2890 3610

5 180 280 450 710 1110 1740 2170

Three-Phase 60 Hz

MOTOR RATIN COPPER WIRE SIZE (AWG)

VOLTS HP 14 12 10 8 6 4 2

208 1-1/2 310 500 790 1260

2 240 390 610 970 1520

3 180 290 470 740 1160 1810

5170 280 4690 1080 1660

230 1-1/2 360 580 920 1450

2 280 450 700 1110 1740

3 210 340 540 860 1340 2080

5 200 320 510 800 1240 1900

460 1-1/2 1700

2 1300 2070

3 1000 1600 2520

5 590 950 1500 2360

575 1-1/2 2620

2 2030

3 1580 2530

5 920 1480 2330

FOOTNOTES:

1. If aluminum conductor is used, multiply lengths by 0.5. Maximum allowable length of aluminum is

considerably shorter than copper wire of same size.

2. The portion of the total cable which is between the service entrance and a 3Ø motor starter should not

exceed 25% of the total maximum length to ensure reliable starter operation. Single-phase control boxes

may be connected at any point of the total cable length.

3. Cables #14 to #0000 are AWG sizes, and 250 to 300 are MCM sizes.

MOTOR INFORMATION

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