Xylem e-NSC, e-NSCF, e-NSCC: 4 Installation

en - Translation of the original instructions

WARNING:

NOTICE:

Do not use the on-off valve on the discharge side in the

• Only use dynamically balanced motors with a half-sized key in the

closed position in order to throttle the pump for more than a

shaft extension (IEC 60034-14) and with normal vibration rate (N).

few seconds. If the pump must operate with the discharge

• The mains voltage and frequency must agree with the specifica-

side closed for more than a few seconds, a bypass circuit

tions on the data plate.

must be installed to prevent overheating of the liquid inside

• Only use single-phase or three-phase motors whose size and

the pump.

power comply with the European standards.

For illustrations that show the piping requirements, see Figure 18 and

In general, motors can operate under the following mains voltage toler-

Figure 19 .

ances:

4.2 Electrical requirements

Frequency Hz Phase ~ UN [V] ± %

• The local regulations in force overrule these specified require-

50 1 220 – 240 ± 6

ments.

• In the case of fire fighting systems (hydrants and/or sprinklers),

3 230/400 ± 10

check the local regulations in force.

400/690 ± 10

Electrical connection checklist

60 1 220 – 230 ± 6

Check that the following requirements are met:

3 220/380 ± 5

• The electrical leads are protected from high temperature, vibra-

tions, and collisions.

380/660 ± 10

• The power supply line is provided with:

• A short-circuit protection device

Use cable according to rules with 3 leads (2+earth/ground) for single

• A mains isolator switch with a contact gap of at least 3 mm

phase versions and with 4 leads (3+earth/ground) for three phase ver-

sion.

The electrical control panel checklist

4.3 Install the pump

NOTICE:

The control panel must match the ratings of the electric pump. Improp-

4.3.1 Mechanical installation

er combinations could fail to guarantee the protection of the motor.

Check the following before installation:

• Use a concrete of compressive strength class C12/15 which

Check that the following requirements are met:

meets the requirements of exposure class XC1 to EN 206-1.

• The control panel must protect the motor against overload and

• The mounting surface must have set and must be completely hor-

short-circuit.

izontal and even.

• Install the correct overload protection (thermal relay or motor pro-

• Observe the weights indicated.

tector).

Mount the unit to a foundation

Pump Type

Protection

For information about the pump base and anchor holes, see Figure

Single phase standard electric

• Built-in automatic reset

20 .

pump ≤ 1,5 kW

thermal-amperometric pro-

Check that the foundation has been prepared in accordance with the

tection (motor protector)

dimensions given in the outline drawing/general arrangement drawing.

• Short circuit protection

(must be supplied by the

1. Position the pump set on the foundation and level it with the help

3

installer)

of a spirit level that is placed on the shaft and discharge nozzle.

Three phase electric pump and

• Thermal protection (must

The permissible deviation is 0.2 mm/m.

4

other single phase pumps

be supplied by the instal-

2. Remove the plugs covering the ports.

ler)

3. Align the pump and piping flanges on both sides of the pump.

• Short circuit protection

Check the alignment of the bolts.

(must be supplied by the

installer)

4. Fasten the piping with bolts to the pump. Do not force the piping

into place.

• The control panel must be equipped with a dry-running protection

system to which a pressure switch, float switch, probes, or other

5. Use shims (2) for height compensation, if necessary.

suitable device is connected.

Always fit shims, if any, immediately to the left and right of the

• The following devices are recommended for use on the suction

foundation bolts (3) between the baseplate/foundation frame and

side of the pump:

the foundation. For a bolt-to-bolt distance (L) > 800 mm, fit extra

• When the liquid is pumped from a water system, use a pres-

shims (2) halfway between the bolt holes.

sure switch.

6. Make sure that all shims lie perfectly flush.

• When the liquid is pumped from a storage tank or reservoir,

7. Insert the foundation bolts (3) into the holes provided.

use a float switch or probes.

• When thermal relays are used, relays that are sensitive to phase

8. Use concrete to set the foundation bolts (3) into the foundation.

failure are recommended.

9. Wait until the concrete has set firmly, and then level the base-

plate.

The motor checklist

10. Tighten the foundation bolts (3) evenly and firmly.

WARNING:

Note:

• Read the operating instructions in order to ensure

• For baseplates, it is recommended to grout the baseplate with

whether a protection device is provided if another motor

low-shrinkage concrete.

other than the standard is used.

• If the transmission of vibrations can be disturbing, provide vibra-

• If the motor is equipped with automatic thermal protec-

tion-damping supports between the pump and the foundation.

tors, be aware of the risk of unexpected starts in con-

nection to overload. Do not use such motors for fire-

Mount the pump to a base frame

fighting applications and sprinkler systems.

Be sure to check that the following are adhered to:

• Solid base frame which does not twist or vibrate during operation

(resonance).

• Mounting surfaces of the pump feet and the motor on the base

frame must be flat (machining is recommended).

• Safe fastening of pump and motor must be guaranteed.

3

fuses aM (motor starting), or magneto-thermal switch with curve C and Icn ≥ 4,5 kA or other equivalent device.

4

Overload thermal relay with operation class 10A + fuses aM (motor starting) or motor protection magneto-thermal switch with operation class 10A.

16 e-NSC Installation, Operation, and Maintenance Manual

en - Translation of the original instructions

• Adequate space between pump and motor shaft must be left de-

• The radial and axial deviation between the two coupling

pending on the used coupling.

halves must not exceed the values in table xyz, during

• Between pump and base frame must be an adequate shimming,

standstill as well as at operating temperature and under inlet

so that in case of replacement the same height between bottom

pressure.

and centerline can be adjusted (recommended vertical adjust-

ment 4-6 mm).

NOTICE:

Mount coupling guard after alignment and before start-up.

4.3.2 Piping checklist

Check that the following are adhered to:

Note: Control alignment of coupling again in operation warm condition

and on system pressure (if available) and correct, if necessary. Pay at-

• The suction lift line has been laid with a rising slope, at positive

tention to chapter 6 beforehand! It must be possible to turn the unit

suction head line with a downward slope towards the pump.

easily and harmoniously by hand.

• The nominal diameters of the pipelines are at least equal to the

nominal diameters of the pump nozzles.

NOTICE:

• The pipelines have been anchored in close proximity to the pump

Improper alignment of the unit can lead to damages at coupling and

and connected without transmitting any stresses or strains.

unit.

CAUTION:

Welding beads, scale and other impurities in the piping dam-

4.3.4 Install the coupling guard

age the pump.

CAUTION:

• Free the piping from any impurities.

Never operate the pump without the coupling guard correctly

• If necessary, install a filter.

installed.

• Follow the “Permitted Forces and torques on the flanges", see

Figure 21 .

Figure 6: Coupling guard parts

The data on forces and moments apply to static pipelines only. The

values are only applicable if the pump is installed on a baseplate and

bolted to a rigid and level foundation.

4.3.3 Coupling alignment

After mounting to the foundation and the connection of the piping, the

coupling must be adjusted again, even if the unit was delivered com-

pletely mounted on the frame.

Figure 4: Alignment of standard coupling

1. Coupling guard lower half

2. Coupling guard upper half

3. Adjusting half

Figure 5: Alignment of spacer coupling

1. Screw coupling guard lower half (1) with screws (S1)to bottom of

bearing cover (4) ring.

2. Insert adjusting piece (3) with slot downward and press it axially

to the motor.

3. Screw coupling guard upper half (1) with screws (S2) to the upper

side of the bearing cover (4) ring.

4. Screw parts 1 and 2 together, which fixes the adjusting piece.

4.3.5 Electrical installation

1. Remove the screws of the terminal box cover.

2. Connect and fasten the power cables according to the applicable

wiring diagram.

1. Coupling guard upper half

For wiring diagrams, see Figure 24 . The diagrams are also avail-

2. Coupling guard lower half

able on the back of the terminal box cover.

3. Adjusting piece

a) Connect the ground (earth) lead.

Remove the coupling guard.

Make sure that the ground (earth) lead is longer than the

1. Loosen the support foot and re-tighten it without transmitting any

phase leads.

stresses and strains.

b) Connect the phase leads.

2. Place the ruler (1) axially on both coupling halves.

3. Mount the terminal box cover.

3. Leave the ruler (1) in this position and turn the coupling by hand.

• The coupling is aligned correctly if the distances a and b to

NOTICE:

the respective shafts are the same at all points around the

Tighten the cable glands carefully to ensure protection against ca-

circumference.

ble slipping and humidity entering the terminal box.

• The radial and axial deviation between the two coupling

halves must not exceed the values in table xyz, during

4. If the motor is not equipped with automatic reset thermal protec-

standstill as well as at operating temperature and under inlet

tion, then adjust the overload protection according to the list be-

pressure.

low.

4. Check the distance (dimension see general arrangement draw-

ing) between the two coupling halves around the circumference

with a gauge (4). The coupling is correctly aligned if the distance

between the two coupling halves is the same at all points around

the circumference.

e-NSC Installation, Operation, and Maintenance Manual 17