Grundfos MTA Series User manual

MTA
取扱説明書
GRUNDFOS取扱説明書

目次
2
MTA
English (GB)
Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
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English (GB)
3
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)
4
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
PN
PC
f
U
I
1/1
l max
P 1
n
Q
nom
H nom
50
3x220-240D/380-415Y
2.78/1.64
3.2/1.89
790
2939
200
8.1
Hz
V
A
A
W
min
l/min
m
f
U
l
1/1
l max
P 1
n
Q
nom
H nom
60
3x220-240D/380-440Y
3.48/2.11-1.96
4.0/2.43-2.25
1270
3449-3489
250
9.9
Hz
V
A
A
W
min
l/min
m
Eff. IE3 80.7 %Eff.
IE3 77.0
%
IP
Insulation class
54
F
Rated P
2
Pipe conn.
DE
NDE
Rp / ”
6204ZZ
6202ZZ
W750
t
liq °C60
MTA 200-280 A-W-B-B
97770025
1114
Model A
SN 0003
Made in Korea
-1 -1
34
123 45
6
7
8
9
10
11
12
13
14
15
16
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)
5
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)
6
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
D1
[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)
7
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
H1
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
H1
H4
H2
Max. liquid level
Min. liquid level
Tank

English (GB)
8
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)
9
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
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.