Grundfos MTA Series Manuale utente

MTA

取扱説明書

GRUNDFOS取扱説明書

MTA

English (GB)

Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions.

CONTENTS Page

1. Symbols used in this document

2. Applications

The Grundfos pump, type MTA, is a single-stage

centrifugal pump designed for the pumping of

cooling lubricants and cutting oil for machine tools.

2.1 Pumped liquids

1. Symbols used in this document 3

2. Applications 3

2.1 Pumped liquids 3

3. Identification 4

3.1 Nameplate 4

3.2 Type key 4

4. Technical data 4

4.1 Sound pressure level 5

4.2 Vibration level 5

5. Installation 5

5.1 Pump position 5

5.2 Dimensions 6

5.3 Liquid level 7

6. Electrical connection 8

7. Startup 9

8. Operation and maintenance 9

8.1 Lubrication and maintenance 9

8.2 Filters 9

8.3 Periodic checks 9

9. Service 9

10. Fault finding 10

11. Disposal 10

Warning

Prior to installation, read these installation

and operating instructions. Installation and

operation must comply with local

regulations and accepted codes of good

practice.

Warning

If these safety instructions are not

observed, it may result in personal injury.

Caution

If these safety instructions are not

observed, it may result in malfunction or

damage to the equipment.

Note

Notes or instructions that make the job

easier and ensure safe operation.

Pump Max. particle size

[mm]

MTA 30

MTA 60 4-5

MTA 90

MTA 120

MTA 200

8-10

MTA 20H

MTA 40H

MTA 70H

MTA 100H

4-5

Max. kinematic viscosity [mm2/s] (= cSt) 90

Permissible liquid temperature [°C] 0 to +60

Warning

The pump must not be used for the transfer

of inflammable liquids such as diesel oil,

petrol or similar liquids.

English (GB)

3. Identification

3.1 Nameplate

Fig. 1 Example of nameplate

3.2 Type key

4. Technical data

TM05 1938 3911

Pos. Designation

1 Production code (YYWW)

2 Product number

3 Type designation (see type key)

4 Serial number

5 Model

6 Frequency

7 Supply voltage

8 Full load current

9 Max. current

10 Motor input power

11 Rated speed

12 Rated flow

13 Rated head

14 Efficiency class (only applies to MTA 200)

15 Motor enclosure class

16 Motor insulation class

17 Rated P2

18 Max. temperature of pumped liquid

19 Pipe connection

20 Motor drive-end bearing

21 Motor non-drive-end bearing

Type

1/1

max

nom

3x220-240D/380-415Y

2.78/1.64

3.2/1.89

790

2939

200

8.1

min

l/min

1/1

max

nom

3x220-240D/380-440Y

3.48/2.11-1.96

4.0/2.43-2.25

1270

3449-3489

250

9.9

min

l/min

Eff. IE3 80.7 %Eff.

IE3 77.0

Insulation class

Rated P

Pipe conn.

NDE

Rp / ”

6204ZZ

6202ZZ

W750

liq

°C60

MTA 200-280 A-W-B-B

97770025

1114

Model A

SN 0003

Made in Korea

-1 -1

123 45

17 18 19 20 21

Example MTA 30 H -150 -A -W -A -T

Pump type

Pump size

Pressure type

Installation length [mm]

Pump version:

A = Standard version

Thread type:

W = Internal thread

WB = Internal NPT thread

Impeller material:

A = PAA GF50

B = Bronze

Suction:

T = Top

B = Bottom

Max. permissible ambient temperature

[°C] +40

Permissible storage temperature [°C] -50 to +70

Enclosure class according to IEC

60034-5 IP54

Motor insulation class F

Max voltage fluctuation according to

IEC 60034 ± 10 %

Recommended maximum number of

starts per hour for all MTA pumps 250

Note

Pay attention to condensation problems in

humid areas.

English (GB)

4.1 Sound pressure level

4.2 Vibration level

*Vibration according to ISO 10816-1 class IB

5. Installation

5.1 Pump position

Fig. 2 Mounting position

The pump is designed for tank mounting in vertical

position. The pump is positioned in a hole cut into

the cover of the tank (upper side) and is secured to

the tank by four or two hexagon head screws through

the holes in the mounting flange. We recommend to

fit a sealing gasket between the pump flange and

tank.

Provide a clearance of minimum 50 mm above the

motor to ensure cooling of fan-cooled motors (MTA

120, 200 and 100H).

The pump is designed for indoor operation only.

Pump Rated P2

[W]

LpA [dB(A)]

50 Hz 60 Hz

MTA 30 100 < 45 < 45

MTA 60 180 < 45 < 45

MTA 90 250 < 45 < 45

MTA 120 400 < 62 < 62

MTA 200 750 < 62 < 62

MTA 20H 100 < 45 < 45

MTA 40H 180 < 45 < 45

MTA 70H 250 < 45 < 45

MTA 100H 400 < 62 < 62

Vibration velocity RMS [mm/s]*< 1.8

Warning

The pump must be installed so that

persons cannot accidentally come into

contact with the hot surface of the motor.

Warning

The pump must be installed so that

persons cannot accidentally come into

contact with the rotating parts.

Note

The MTA pumps can only be mounted in

vertical position.

TM05 1690 4411

Caution

The motor must not be exposed to direct

water/liquid sprays.

Min. 50 mm

(MTA 120, 200 and 100H)

English (GB)

5.2 Dimensions

5.2.1 Installation dimensions

Fig. 3 Installation dimensions

* applies only to MTA 120

5.2.2 Tank hole and cable entry

Fig. 4 Tank hole and cable entry

TM04 7991 1411

Pump C D1

[mm] D2

[mm] L

[mm] X

[mm]

MTA 30

Rp 3/8 /

G 1/2 /

1/2" NPT

132 116 100 ∅7

MTA 60

Rp 1/2 /

G 3/4 /

3/4" NPT

160 143 112.5 ∅10

MTA 90

Rp 3/4 /

G 3/4 /

3/4" NPT

160 154 112.5 ∅10

MTA 120

Rp 1 /

G 1 1/4 /

1 1/4" NPT

180 155 126.5 ∅10

MTA 200

Rp 2 /

G 1 1/2 /

1 1/2" NPT

220 200 134.5 ∅12

MTA 20H

Rp 3/8 /

G 1/2 /

1/2" NPT

132 116 100 ∅7

MTA 40H

Rp 1/2 /

G 3/4 /

3/4" NPT

160 143 112.5 ∅10

MTA 70H

Rp 3/4 /

G 3/4 /

3/4" NPT

160 154 112.5 ∅10

MTA 100H

Rp 1 /

G 1 /

1" NPT

180 175 124 ∅10

TM05 0632 1311

Pump

Tank hole Cable entry hole

[mm] D2

[mm]

MTA 30 ∅90 ∅22

MTA 60 ∅115 ∅22

MTA 90 ∅128 ∅22

MTA 120 ∅135 ∅22

MTA 200 ∅180 ∅22

MTA 20H ∅100 ∅22

MTA 40H ∅135 ∅22

MTA 70H ∅135 ∅22

MTA 100H ∅155 ∅22

English (GB)

5.3 Liquid level

5.3.1 MTA with top suction

Fig. 5 MTA with top suction

* Min. liquid level (full performance).

** Min. permissible liquid level (reduced

performance).

5.3.2 MTA with bottom suction

Fig. 6 MTA with bottom suction

* Min. liquid level (full performance).

TM04 7992 4211

Pump H1

[mm] H2*

[mm] H3**

[mm]

MTA 30 15 60 50

MTA 60 20 70 45

MTA 90 20 85 58

MTA 120 20 110 70

MTA 20H 15 50 40

MTA 40H 20 70 40

MTA 70H 20 80 50

MTA 100H 20 110 60

H2 H3

Max. liquid level

Min. liquid level

Tank

TM04 7993 4211

Pump H1

[mm] H2*

[mm] H4

[mm]

MTA 30 15 20 10

MTA 60 20 20 10

MTA 90 20 25 15

MTA 120 20 25 20

MTA 200 25 50 30

Max. liquid level

Min. liquid level

Tank

English (GB)

6. Electrical connection

The electrical connection should be carried out in

accordance with local regulations.

The operating voltage and frequency are marked on

the pump nameplate. Make sure that the motor is

suitable for the power supply on which it will be used.

The motor must be connected to a motor-protective

circuit breaker.

We do not recommend operation via frequency

converter.

Terminal box positions

The terminal box can be turned to another position.

●The terminal box can be turned to another

position after delivery.

(●) The terminal box cannot be turned to another

position after delivery. The pump must be

ordered with the terminal box in position 3

o'clock.

Fig. 7 Terminal box positions (top view)

Proceed as follows:

1. Remove the bolts securing the motor to the

pump.

2. Turn the motor to the required position.

3. Refit and tighten the bolts securing the motor to

the pump.

The electric motor should be connected to the supply

as shown in the diagram inside the terminal box

cover.

Warning

Never make any connections in the pump

terminal box unless the power supply has

been switched off.

Pump

Terminal box positions

9 o'clock

(standard) 3 o'clock

MTA 30 ●●

MTA 60 ●●

MTA 90 ●●

MTA 120 ●(●)

MTA 200 ●(●)

MTA 20H ●●

MTA 40H ●●

MTA 70H ●●

MTA 100H ●(●)

TM05 1759 3611TM05 1760 3611

Outlet

Standard

9 o'clock

Outlet

3 o'clock

English (GB)

7. Startup

The pump can be started against an open or a

closed discharge valve.

Before starting the pump:

• Make sure that all pipe connections are tight.

• Make sure that the pump is immersed to the

recommended level.

• Make sure that chip trays are not blocked by

impurities.

Start the pump as follows:

1. See the correct direction of rotation of the pump

on the motor fan cover or on the sight glass.

When seen from the top, the pump should rotate

counter-clockwise.

2. Start the pump and check the direction of

rotation.

Fig. 8 Sight glass with indication of the correct

direction of rotation

Fig. 9 Motor fan cover with indication of the

correct direction of rotation

8. Operation and maintenance

8.1 Lubrication and maintenance

Pumps installed in accordance with these

instructions require very little maintenance.

The motor ball bearings are grease-packed and

sealed for life. No further lubrication is necessary.

8.2 Filters

Chip trays, filters, etc. should be cleaned at regular

intervals to ensure a correct flow of liquid. This will

also increase the pump life.

8.3 Periodic checks

Make the following checks at regular intervals,

depending on the conditions and time of operation.

• Check the quantity of liquid and operating

pressure.

• Check that there are no leaks.

• Check that the motor is not overheating.

• Check the tripping of the motor-protective circuit

breaker.

• Check that all control devices are operating

satisfactorily.

If the above checks do not reveal any abnormal

operating details, no further checks are necessary.

Should any faults be found, see section 10. Fault

finding.

9. Service

A contaminated pump must not be sent to Grundfos

for service until Grundfos has received all necessary

details about the pumped liquid, etc. Otherwise

Grundfos can refuse to accept the pump for service.

Costs of returning the pump are to be paid by the

customer.

TM04 8003 2610TM04 8004 2610

Warning

If a pump has been used for pumping

liquids which are injurious to human health

or poisonous, it will be classified as

contaminated.

English (GB)

10. Fault finding

11. Disposal

This product or parts of it must be disposed of in an

environmentally sound way:

1. Use the public or private waste collection service.

2. If this is not possible, contact the nearest

Grundfos company or service workshop.

Warning

Before starting work on the pump, make

sure that the power supply has been

switched off and that it cannot be

accidentally switched on.

Fault Cause Remedy

1. Motor does not run

when power supply

is switched on.

a) Supply failure. Connect the power supply.

b) Fuses are blown. Replace fuses.

c) Motor-protective circuit breaker

has tripped out. Reactivate the motor protection.

d) Main contacts in motor-protective

circuit breaker are not making

contact or the coil is faulty.

Replace contacts or magnetic coil.

e) Control circuit is defective. Repair the control circuit.

f) Motor is defective. Replace the pump.

2. Motor-protective

circuit breaker trips

out immediately

when power supply

is switched on.

a) Fuse on one phase is blown. Replace fuse.

b) Contacts in motor-protective circuit

breaker are faulty.

Replace contacts in motor-protective

circuit breaker.

c) Cable connection is loose or faulty. Fasten or replace the cable connection.

d) Motor winding is defective. Replace the pump.

e) Pump mechanically blocked. Remove the mechanical blocking of the

pump.

f) Overload setting is too low. Set the motor-protective circuit breaker

correctly.

3. Motor-protective

circuit breaker trips

out occasionally.

a) Overload setting is too low. Set the motor-protective circuit breaker

correctly.

b) Low voltage at peak times. Check the power supply.

4. Motor-protective

circuit breaker has

not tripped out but

the pump does not

run.

a) Check 1 a), b), d) and e).

5. Pump runs but gives

no liquid or pump

capacity is not

constant.

a) Pump inlet partly blocked by

impurities. Clean the inlet.

b) Liquid level in tank too low. Increase the liquid level.

c) Pump rotates in the wrong

direction.

Change the direction of rotation of the

motor by switching any two of the

phases.

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