KSB Multiboost Bedienungsanleitung

Operating Instruction Manual

Multiboost - Multistage Booster Motor Pumps

Our technology. Your success.

MULTIBOOST

Index

Sr.No. Contents Page No.

1 General 1

1.1 Safety of pumping unit 1

1.1.1 Check & Safety of pumping unit 1

1.1.2 Instructions on unit (Printed Matter) 1

1.1.3 For unauthorized spare part and modifications 1

1.1.4 For unauthorized modes of operation 1

1.1.5 Water characteristics 2

1.2 Description of product 2

2 Installation 2

2.1 General 2

2.2 Assembly parts 3

2.3 Piping 4

2.4 Priming the Pump 4

2.5 Important 5

2.6 Verification of power line with respect to motor design 5

2.7 Starting Mode 6

3 Commissioning and start up 8

3.1 Verification of rated current 8

3.2 Switching ON of mains 8

3.3 Checking the direction of rotation 8

3.4 Operation against a closed discharge valve 8

3.5 Operation against a throttled discharge valve 8

3.6 Operating limits of pump 9

3.7 Switching frequency 9

4 Maintenance 9

5 Services 10

6 Recommended stock of spares 10

7 Trouble shooting 11

8 Sectional Drawing (Multiboost) 12

Annexure I – Environmental Protection – 13

Product Disposal after useful life

MULTIBOOST

1. General

Multi-boost multistage surface motor pumps by KSB have been developed in

accordance with state of the art of design and manufacturing technology with

extreme care and rigid quality control. The manual contains important information

for reliable operation of pump.

The special feature of these mutiboost multistage surface pumps is automatic

operation through a pressure switch depending on the discharge pressure. These

systems are useful to pump clean water for pressure boosting applications in small

bungalows / flats or even individual bathrooms, domestic supply systems, irrigation

systems, fountains etc.

For any additional information or instructions please contact KSB's nearest office.

1.1 Safety of pumping unit

This operating manual contains fundamental installation, operation and maintenance

instructions. Hence this must be clearly understood by concerned people, prior to

installation. The booklet must always be located for easy access at site.

1.1.1 Checks & Safety of pumping unit

Check for any transit damage. After unpacking inspect the pump motor, tank, switch

and accessories for any signs for the damage of the lead cable.

This operating manual does not take into account any safety regulations those may

apply. It’s a pump operator’s responsibility that any such regulations are adhered to.

1.1.2 Instructions on unit (Printed matter)

Follow the instructions attached on the motor / pump e.g.

• Arrow indicating the direction of rotation.

• Various plugs for water connections viz. priming, venting, etc. on motor.

1.1.3 For unauthorized spare part and modifications

Modifications or alterations of the equipment supplied are strictly not permitted.

Original spare parts and accessories authorized by the manufacturer ensure safety.

The use of spurious parts invalidates any liability of the manufacturer for

consequential damage.

1.1.4 For unauthorized modes of operation

The warranty related to the operation reliability and safety of the unit supplied is

valid only if the equipment is operated according to designated parameters. The

operating limits should not differ from the limits specified on the nameplate.

1.1.5 Water characteristics

Multistage open well surface pumps are designed for handling the clean or slightly

contaminated water with the following main characteristics: (As per IS 9079 : 2002)

a) Turbidity : 50 ppm*, Max (Silica scale)

b) Chlorides : 500 ppm*, Max

c) Total Solids : 3000 ppm*, Max

d) pH value : 6.5 to 8.5

e) Temperature : 33º C, Max

f) Specific gravity : 1.004 Max

g) Hardness : 300, Max (Drinking water)

* ppm - parts per million

1.2 Description of product

2. Installation

2.1 General

• Install the pump on a rigid foundation having enough strength to absorb any

vibration and shock. Never fix the pump at an inclined position. (See Figure 2)

• Install pump in a dry place and make it safe from any possible flooding. Proper

shielding should be provided to protect the pump set from direct solar radiation

and rain.

• The pump set operates on electrical power supply and poses electric power.

Adequate care must be taken to avoid accident.

Type Series

Nominal flow in m /hr

No. of Stages

KHM 04 02

MULTIBOOST

Fig. 1

Foundation

Bolt & Nut

Rubber Pad

2.2 Assembly Parts

• The Multi-boost system is available with 24 lit. Vertical tank. Along with the pump

and accumulator tank - a non-return valve, 5 way connector, pressure gauge,

pressure switch, and necessary connectors / fasteners shall be part of the supply.

Refer exploded view figure 2.

Fig 2

1. Pump

2. Hex. Nipple

3. O-ring

4. 5 Way Connector

5. Danfoss Pressure switch

6. Pressure Gauge

7. NRV

8. Tank

Sr. No. Part Name

MULTIBOOST

2.3 Piping

a. Use ISI marked PVC / HDPE pipes for suction and delivery.

b. Use only recommended pipe size for suction and delivery, as using smaller pipe

size will affect the discharge and total head. The pipes must be well supported to

avoid transmitting stress to pump body, which leads damage to the pump parts.

c. Reduce number of bends, T-joints and valves in the pipe line. Use elbows with

smoother bends as far as possible.

d. Do not use fibers / threads for pipe joints. Always use Teflon tape for joining pipe

threads.

e. Foot valve is required at end of suction pipe. Use good quality 'low friction' foot

valve for getting better performance .

f. Ensure that the foot valve is placed minimum 0.5 mtrs above the base level / floor

level of the well to avoid an entry of muddy water. The foot valve needs to be

submerged minimum 1 meter below water level, to prevent entry of air into pump

which can damage the pump due to cavitations.

The suction height from water level to the pump suction nozzle level should not be

more than 6 mtrs minus suction line losses to avoid cavitations and damage to the

pump.

2.4 Priming the Pump

Priming the pump set as shown in figure 3 is necessary at first startup and then as and

when required.

Ensure that the casing is filled adequately with water before starting. If the pump set

is idle for a very long duration

MULTIBOOST

Suction Pipe Securing Clamp

to avoid load on the

Suction Flange

GL GL

Delivery

Maximum

(6 mtr. minus

Suction line

losses)

2.0 mtr

min.

0.5 mtr

min.

0.5 mtr

min.

Foot Valve

More thread length will damage the

foot valve

Well

Fig. 3

2.5 IMPORTANT

• Never run the pump set with delivery valve closed or in dry condition to prevent

damage to the mechanical seal. The pump set must be protected from rain.

• Ensure the motor is ON at-least once in day for a few minutes to maintain freeness.

2.6 Verification of power line with respect to motor design

Verify the voltage and frequency of main supply with the data given on the pump set

nameplate.

If it is not matching then consult with concerned electrical authority.

Ensure that the main power supply is stable.

MULTIBOOST

2.7 Starting Mode

• The supply to the motor must be given through the pressure switch.

• The connection must be done as given in figure 4.

• The switch must be connected in series with the motor in live / phase terminal.

• Do not change the settings of pressure switch. In case any doubt contact nearest

authorized service center

Fig. 4

MULTIBOOST

Typical examples of name plate:-

Pump name plate:-

• Refer nameplate for the values

• As KSB products are subject to continuous design improvements, KSB reserve the

right to modify / change the parts, performance without any notice

• The sample name plate is as shown in figure 5.

MULTIBOOST

Fig. 5

3 Commissioning and start up

3.1 Verification of rated current

Please refer to the motor nameplate for the values of rated current required for relay

setting.

3.2 Switching ON mains

The pump set should be switched ON only if water level in well/sump is above limit

given in figure 2.

3 .3 Checking the direction of rotation

For Three-phase motors

1) Let the pumping set run for a short time against a closed discharge valve, in both

the directions of rotation and check the flow. Reversing of poles of connection,

reverses the direction of rotation. The higher flow rate gives the direction of

rotation. OR

2) Using pressure gauge, check the discharge pressure in both the direction of

rotations. The higher value corresponds to the correct direction of rotation. OR

3) By visual inspection see the flow rate in both cases. If water comes out up to the

short length through the raiser pipe, flow rate is lower while if it comes farther,

results in higher flow rate. The higher flow indicates the correct direction of

rotation.

For Single-phase motors

In case of single-phase AC motors the direction of rotation of the motor itself

corresponds to the correct direction of rotation of the pump, irrespective of mode of

connection to the power supply.

3.4 Operation against a closed discharge valve

Pumps should not be allowed to run against a closed discharge valve for longer than 5

minutes. This would cause the water in the pump to warm up quickly and the heat

would be transferred to the motor, which causes a risk to the motor.

3.5 Operation against a throttled discharge valve

If the pump set is to be operated against a throttled discharge valve for a prolonged

period of time, the minimum rate of flow should be at least 10% of flow at the best

efficiency point * (BEP) of the characteristic curve, this must be observed in order to

reduce noisy operation and the overheating of the pump set.

* For best efficiency point (BEP) of the characteristic curve consult with KSB dealer.

MULTIBOOST

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