IWAKI PUMPS MXM Series User manual

Read this manual before use of product
IWAKI Magnetic Drive Pump
MXM (Asia version: English)
Instruction Manual

Thank you for selecting an Iwaki MXM Series Magnetic Drive Pump. This instruction manual
deals with "Safety instructions", "Outline", "Installation", "Operation", and "Maintenance"
sections. Please read through this manual carefully to ensure the optimum performance, safety
and service of your pump.
Contents
Important instructions ···································································· 1
Safety instructions ·········································································· 2
Outline 1. Unpacking & Inspection ..................................................5
2. Model codes.....................................................................6
3. Operating conditions........................................................7
4. Part names........................................................................8
Installation 1. Before installation ..........................................................14
2.Pipework
........................................................................15
3.Wiring
............................................................................17
4. Protection equipment .....................................................18
Operation 1. Before operation.............................................................20
2. Operation........................................................................21
3. Shutdown........................................................................22
Maintenance 1. Troubleshooting..............................................................24
2. Maintenance & Inspection.............................................26
3. Disassembly & Assembly...............................................29
4. Spare & Wear parts........................................................36
This instruction manual should be kept on hand by the end user for
quick reference.
Contact us or your nearest dealer if you have any questions.

- 1 -
Important instructions
For exportation
Technology related to the use of goods in this instruction manual falls in the category of
technology contained in the Foreign Exchange Order Attachment, which includes com-
plementary export control of technology. Please be reminded that export license, which
is issued by the Ministry of Economy, Trade, and Industry could be required, when this is
exported or provided to someone even in Japan.
Nonobservance or misapplication of “Caution” sec-
tions could lead to personal injury or property dam-
age.
For the Safe and
Correct Handling of the Pump
●"Safety Instruction" section deals with important details about handling of the product. Before
use, read this section carefully for the prevention of personnel injury or property damage.
●Observe the instructions accompanied with "WARNING" or "CAUTION" in this manual. These
instructions are very important for protecting users from dangerous situations.
●The symbols on this instruction manual have the following meanings:
WARNING
Nonobservance or misapplication of “Warning”
sections could lead to serious accident which may
result in death.
CAUTION
Types of Symbols
Indicates that “Warning” or “Caution” must be exercised. Inside this triangle, a con-
crete and practical image provided as a warning or caution message is depicted.
Indicates a prohibited action or procedure. Inside or near this circle, a concrete and
practical image of the activity to be avoided is depicted.
Indicates an important action or procedure which must be performed or carried out
without fail. Failure to follow the instructions herein can lead to malfunction or
damage to the pump.

- 2 -
●Access limitation
The magnet drive pump has a pair of strong magnets (the magnet capsule
unit and drive magnet). The strong magnet field could adversely affect the
persons who are assisted by electronic devices such as the pacemaker.
●Power OFF
Be sure to turn off power before starting maintenance/repair work. Make
sure no one turns on power while working on the pump, otherwise it may
result in a serious accident. If your work field is noisy or dark, let other peo-
ple know about the situation by displaying a notice such as "POWER OFF
(Maintenance)" near a power switch.
●Wear protective clothing
Always wear protective clothing such as eye protection and protective
gloves during pipework or dismantlement of the pump.
●Lifting pump
When lifting the pump, apply a chain or belts to the eye bolts to keep the
pump horizontal.
●Do not remodel pump
Do not remodel the pump. We are not responsible for any personal injury or
property damage due to modification.
●When handling dangerous liquid
For the transfer of the harmful liquid as mentioned below, be sure to con-
duct daily inspection and maintenance for the prevention of liquid/gas leak-
age.
1. Explosive or flammable liquid
2. Corrosive chemicals
3. Harmful liquid or gas
●Keep good ventilation
Poisoning may result when handling a toxic or odorous liquid. Install an air
fan in order to reduce the possibility of health damage.
WARNING
Turning of f power
Safety instruction
Prohibited
Wear protective
gear
No Remodeling

- 3 -
●Attention to magnetic force
Strong magnets are used in this pump. Personal injury may be caused
from the strong magnetic force. Follow the procedure on "Disassembly &
Assembly" when conducting maintenance work.
●Do not run pump dry
Running the pump without liquid, friction heat damages the inside of pump.
Dry running takes place when starting the pump with a closed suction line.
●A qualified operator only
The pump must be handled or operated by a qualified person with a full
understanding of the pump.
●Specified application only
The use of the pump in any application other than those clearly specified
may result in failure or damage.
●Take countermeasures against static electricity
When low electric conductivity liquids such as ultra-pure water and fluor
inactive liquid (e.g. FluorinertTM) are handled, static electricity may be gener-
ated in the pump and may cause static discharge.
●Conduct degassing before operation
Always prime the pump and remove air before operation. Note that hydro-
gen peroxide and sodium hypochlorite easily generate gas and degassing is
needed before every operation. Otherwise, sliding parts may be damaged.
●Countermeasure against efflux
Take protective measures against an accidental chemical overflow results
from pump or piping breakage. Do not soak chemicals into the ground direc-
tory.
●Disposal of the used pump
Dispose of a used pump in accordance with local laws and regulations
(Consult a licensed industrial waste products disposing company.).
CAUTION
Safety instruction
Prohibited
Prohibited

- 4 -
Outline
1. Unpacking & Inspection........................5
2. Model codes.........................................6
3. Operating conditions.............................7
4. Part names...........................................8

- 5 -
Foot
Be sure to fix the
pump.
Do not wipe labels or the pump body with a solvent.
CAUTION
Drain port
Do not flow chemicals directly
onto the ground. Always drain a
liquid into a suitable container.
Follow an applicable local regu-
lation at disposal of liquid.
Outline
1. Unpacking & Inspection
On unpacking the product, check the following
points. If you find any problems, contact your
nearest distributor.
1. Check the information on nameplate (model
code, flow rate, discharge pressure and voltage)
to see if the product is delivered as per order.
2. Check for transit damage, deformation, and loose
bolts.
Pump label
Observe the specifica-
tion on the pump label.
Pump unit
Not capable of self-priming. Prime the pump
via inlet or outlet before operation.
Motor nameplate
Observe the power voltage specified on the
nameplate.
(Follow an applicable local power regulation.)
Outlet
Inlet
Motor (Drive unit)
The motor power is
transmitted to the
pump.

MXM 54 3 - 150 3 E CF V J - B
a b c d e f g h i
a. Pump bore
Inlet bore × Outlet bore
22: 25A × 25A
44: 40A × 40A
54: 50A × 40A
b. Motor output
0: 0.4kW 1: 0.75kW 2: 1.5kW 3: 2.2kW 5: 3.7kW
c. Impeller diameter
70-150mm
d. Impeller code
1 or 2········· MXM22
1 or 2········· MXM44
1, 2, 3, 4 ···· MXM54
e. Wet end material
E: CFRETFE
f. Bearing/spindle material
CF: High density carbon/High purity alumina ceramic
FF: High purity alumina ceramic/High purity alumina ceramic
KK: SiC/SiC
g. O ring material
V: FKM E: EPDM A: AFLAS®
P: DAI-EL PERFLUOR®
h. Flange connection/Motor standard
J : JIS flange + JIS motor
I : ISO flange + IEC motor
A : ANSI flange + JIS motor
i. Special specification
Blank: Standard B: With base H: High-temperature version S: Special specification
- 6 -
2. Model codes
Outline

3. Operating conditions
Maximum operating pressure
Observe the maximum operating pressure below.
Ambient temperature: 0-40°C
Relative humidity: 35-85%RH
NOTE: The minimum liquid temperature for
AFLAS®O ring is 10°C.
Slurry
Generally the pump can not send slurry except the KK type (SiC bearing and SiC spindle).
The KK type can handle slurry up to 5% (concentration), 50μm (particle size) and 80Hs (hardness).
Contact us for details.
Performance change
Shaft power, discharge capacity and pump head vary with specific gravity and viscosity. The pump is
designed for a specified liquid. Contact us before changing liquid specification.
Temperature change
Note that viscosity, vapour pressure or corrosiveness changes with liquid temperature. The change is
shown in performance such as flow rate while the pump itself is not affected.
The maximum liquid viscosity for the FF type
1 mPa•S (cP) or more
- 7 -
Outline
0.7
0.3
-10 90 100
Max. operating pressure (MPa)
High temperature type (H)
Temp.
(°C)
0.7
0.2
-10 90 100
Max. operating pressure (MPa)
High temperature type (H)
Temp.
(°C)
0.7
0.45
-10 90 100
Max. operating pressure (MPa)
High temperature type (H)
Temp.
(°C)
MXM220/221 MXM441/442
MXM542/543/545

- 8 -
Outline
4. Part names
NO. PART NAMES Q'TY MATERIAL REMARKS
100.1 FRONT CASING 1 CFRETFE
100.2 COVER A 1
DUCTILE IRON100.3 COVER B 1
100.4 COVER C 2
122.1 DRAIN CAP 2 ETFE
158 REAR CASING 1 CFRETFE
230 IMPELLER 1 CFRETFE
330 FRAME 1 DUCTILE IRON
330.1 MOTOR SPACER 1 SPCC
400.1 O RING 1 V: FKM E: EPDM A: AFLAS®
P: DAI-EL PERFLUOR®
JIS B 2401 G140
400.2 GASKET 2
554.1 SPRING WASHER 6 STNLS STL M8
554.2 SPRING WASHER 4
801 MOTOR 1 0.4kW
858 DRIVE MAGNET UNIT 1 0.4kW: FERRITE MAGNET+ALUMINIUM ALLOY
859 MAGNET CAPSULE 1 0.4kW: FERRITE MAGNET+CFRETFE
901.1 HEX. HEAD BOLT 4
STNLS STL
M8×25
903.1 HEX SOCKET HEAD BOLT 3 M8×50
903.2 HEX SOCKET HEAD BOLT 3 M8×70
903.3 HEX SOCKET HEAD BOLT 3 STEEL M6×18
903.4 HEX SOCKET HEAD BOLT 2
903.5 HEX SOCKET HEAD BOLT 4 STNLS STL M8×15
908.1 HEX SOCKET SET SCREW 2 STEEL
NO. PART NAMES Q'TY MATERIAL REMARKS
CF FF KK
210 SPINDLE 1 HIGH PURITY ALUMINA CERAMIC SiC
310 BEARING 1
HIGH DENSITY CARBON HIGHPURITY ALUMINACERAMIC SiC
314.1 LINER RING 1 HIGH PURITY ALUMINA CERAMIC SiC
314.2 MOUTH RING 1 FILLED PTFE SiC
314.3 REAR THRUST 1 CFRETFE
903.1 554.1 903.1 554.1 903.1903.5 554.1 903.2 554.1
122.1
400.2
100.4
314.1
314.2
210
310
903.4
314.3
400.1
801 858 901.1 554.2 330.1 330 908.1 859 158 100.3 903.3 100.2 230 100.1
MXM220

- 9 -
Outline
903.1 554.1903.1 554.1 903.1903.5 554.1 903.2 554.1
122.1
400.2
100.4
314.1
314.2
210
310
903.4
314.3
400.1
801 858 901.1 554.2 908.1 330.2 330 554.4 901.3 900 159 859 158 100.3 903.3 100.2 230 100.1
NO. PART NAMES Q'TY MATERIAL REMARKS
100.1 FRONT CASING 1 CFRETFE
100.2 COVER A 1
DUCTILE IRON100.3 COVER B 1
100.4 COVER C 2
122.1 DRAIN CAP 2 ETFE
158 REAR CASING 1 CFRETFE
159 REAR CASING COVER 1 FRP
230 IMPELLER 1 CFRETFE
330 FRAME 1 DUCTILE IRON
330.2 MOTOR ADAPTER 1
400.1 O RING 1 V: FKM E: EPDM A: AFLAS®
P: DAI-EL PERFLUOR®
JIS B 2401 G140
400.2 GASKET 2
554.1 SPRING WASHER 6
STNLS STL M8554.2 SPRING WASHER 4
554.4 SPRING WASHER 4
801 MOTOR 1 0.4kW
858 DRIVE MAGNET UNIT 1 FERRITE MAGNET+DUCTILE IRON
859 MAGNET CAPSULE 1 FERRITE MAGNET+CFRETFE
900 EYE BOLT 1 STEEL M10
901.1 HEX. HEAD BOLT 4
STNLS STL
M8×20
901.3 HEX. HEAD BOLT 4 M8×25
903.1 HEX SOCKET HEAD BOLT 3 M8×50
903.2 HEX SOCKET HEAD BOLT 3 M8×70
903.3 HEX SOCKET HEAD BOLT 3 STEEL M6×18
903.4 HEX SOCKET HEAD BOLT 2
903.5 HEX SOCKET HEAD BOLT 4 STNLS STL M8×15
908.1 HEX SOCKET SET SCREW 2 STEEL
NO. PART NAMES Q'TY MATERIAL REMARKS
CF FF KK
210 SPINDLE 1 HIGH PURITY ALUMINA CERAMIC SiC
310 BEARING 1
HIGH DENSITY CARBON HIGHPURITY ALUMINACERAMIC SiC
314.1 LINER RING 1 HIGH PURITY ALUMINA CERAMIC SiC
314.2 MOUTH RING 1 FILLED PTFE SiC
314.3 REAR THRUST 1 CFRETFE
MXM220H

- 10 -
Outline
903.1 554.1903.1 554.1 903.1903.5 554.1 903.2 554.1
122.1
400.2
100.4
314.1
314.2
210
310
903.4
314.3
400.1
801 858 901.1 554.2 908.1 330 900 159 859 158 100.3 903.3 100.2 230 100.1
NO. PART NAMES Q'TY MATERIAL REMARKS
100.1 FRONT CASING 1 CFRETFE
100.2 COVER A 1
DUCTILE IRON100.3 COVER B 1
100.4 COVER C 2
122.1 DRAIN CAP 2 ETFE
158 REAR CASING 1 CFRETFE
159 REAR CASING COVER 1 FRP
High-temp type only
230 IMPELLER 1 CFRETFE
330 FRAME 1 DUCTILE IRON
400.1 O RING 1 V: FKM E: EPDM A: AFLAS®
P: DAI-EL PERFLUOR®
JIS B 2401 G140
400.2 GASKET 2
554.1 SPRING WASHER 6 STNLS STL M8
554.2 SPRING WASHER 4 M10
801 MOTOR 1 0.75kW
858 DRIVE MAGNET UNIT 1 FERRITE MAGNET+DUCTILE IRON
859 MAGNET CAPSULE 1 FERRITE MAGNET+CFRETFE
900 EYE BOLT 1 STEEL
901.1 HEX. HEAD BOLT 4
STNLS STL
M10×25
903.1 HEX SOCKET HEAD BOLT 3 M8×50
903.2 HEX SOCKET HEAD BOLT 3 M8×70
903.3 HEX SOCKET HEAD BOLT 3 STEEL M6×18
903.4 HEX SOCKET HEAD BOLT 2
903.5 HEX SOCKET HEAD BOLT 4 STNLS STL M8×15
908.1 HEX SOCKET SET SCREW 2 STEEL
NO. PART NAMES Q'TY MATERIAL REMARKS
CF FF KK
210 SPINDLE 1 HIGH PURITY ALUMINA CERAMIC SiC
310 BEARING 1
HIGH DENSITY CARBON HIGHPURITY ALUMINACERAMIC SiC
314.1 LINER RING 1 HIGH PURITY ALUMINA CERAMIC SiC
314.2 MOUTH RING 1 FILLED PTFE SiC
314.3 REAR THRUST 1 CFRETFE
MXM221/ 221H

NO. PART NAMES Q'TY MATERIAL REMARKS
100.1 FRONT CASING 1 CFRETFE
100.2 COVER A 1
DUCTILE IRON100.3 COVER B 1
100.4 COVER C 2
122.1 DRAIN CAP 2 ETFE
158 REAR CASING 1 CFRETFE
159 REAR CASING COVER 1 FRP
High-temp type only
230 IMPELLER 1 CFRETFE
330 FRAME 1 DUCTILE IRON
400.1 O RING 1 V: FKM E: EPDM A: AFLAS®
P: DAI-EL PERFLUOR®
JIS B 2401 G160
400.2 GASKET 2
554.1 SPRING WASHER 6 STNLS STL M10
554.2 SPRING WASHER 4 M10
801 MOTOR 1 0.75/1.5kW
858 DRIVE MAGNET UNIT 1 0.75kW FERRITE
MAGNET+DUCTILE IRON 1.5kW REAR EARTH MAGNET+DUCTILE IRON
859 MAGNET CAPSULE 1 0.75kW FERRITE
MAGNET+CFRETFE 1.5kW REAR EARTH MAGNET+CFRETFE
900 EYE BOLT 1 STEEL
901.1 HEX. HEAD BOLT 4
STNLS STL
M10×25
903.1 HEX SOCKET HEAD BOLT 3 M10×55
903.2 HEX SOCKET HEAD BOLT 3 M10×75
903.3 HEX SOCKET HEAD BOLT 3 STEEL M6×18
903.4 HEX SOCKET HEAD BOLT 2
903.5 HEX SOCKET HEAD BOLT 4 STNLS STL M8×20
908.1 HEX SOCKET SET SCREW 2 STEEL
NO. PART NAMES Q'TY MATERIAL REMARKS
CF FF KK
210 SPINDLE 1 HIGH PURITY ALUMINA CERAMIC SiC
310 BEARING 1
HIGH DENSITY CARBON HIGHPURITYALUMINACERAMIC SiC
314.1 LINER RING 1 HIGH PURITY ALUMINA CERAMIC SiC
314.2 MOUTH RING 1 FILLED PTFE SiC
314.3 REAR THRUST 1 CFRETFE
- 11 -
Outline
MXM441/ 441H/ 442/ 442H
122.1
400.2
100.4
314.1
314.2
210
903.4
310
314.3
400.1
801 901.1 554.2 858 330 908.1 900 159 859 100.3 903.3 158 100.2 230 100.1 903.1 554.1903.5 903.2 554.1 903.2 554.1
903.2 554.1

- 12 -
Outline
400.1
903.1 554.1903.2903.5 554.1
314.1
903.4
310
314.3
210
314.2
100.4
400.2
900801 858 908.1 901.1 554.2 330 159 859 158 942 100.3 903.3 100.2 230 100.1 122.1
NO. PART NAMES Q'TY MATERIAL REMARKS
100.1 FRONT CASING 1 CFRETFE
100.2 COVER A 1
DUCTILE IRON100.3 COVER B 1
100.4 COVER C 2
122.1 DRAIN CAP 2 ETFE
158 REAR CASING 1 CFRETFE
159 REAR CASING COVER 1 FRP
High-temp type only
230 IMPELLER 1 CFRETFE
330 FRAME 1 DUCTILE IRON
400.1 O RING 1 V: FKM E: EPDM A: AFLAS®
P: DAI-EL PERFLUOR®
JIS B 2401 G165
400.2 GASKET 2
554.1 SPRING WASHER 6 STNLS STL M10
554.2 SPRING WASHER 4
1.5/2.2kW:M10 3.7kW:M12
801 MOTOR 1 1.5/2.2/3.7kW
858 DRIVE MAGNET UNIT 1 REAR EARTH MAGNET+DUCTILE IRON
859 MAGNET CAPSULE 1 REAR EARTH MAGNET+CFRETFE
900 EYE BOLT 1 STEEL M10
901.1 HEX. HEAD BOLT 4
STNLS STL
1.5/2.2kW:M10×30 3.7kW:M12×35
903.1 HEX SOCKET HEAD BOLT 5 M10×40
903.2 HEX SOCKET HEAD BOLT 1 M10×80
903.3 HEX SOCKET HEAD BOLT 3 STEEL M6×18
903.4 HEX SOCKET HEAD BOLT 2 M8×20
903.5 HEX SOCKET HEAD BOLT 4 STNLS STL M8×15
908.1 HEX SOCKET SET SCREW 1 STEEL M8×10
942 LOCK PIN 2 CFRETFE
NO. PART NAMES Q'TY MATERIAL REMARKS
CF FF KK
210 SPINDLE 1 HIGH PURITY ALUMINA CERAMIC SiC
310 BEARING 1
HIGH DENSITY CARBON HIGHPURITYALUMINACERAMIC SiC
314.1 LINER RING 1 HIGH PURITY ALUMINA CERAMIC SiC
314.2 MOUTH RING 1 FILLED PTFE SiC
314.3 REAR THRUST 1 CFRETFE
MXM542/ 543/ 545

- 13 -
Installation
1. Before installation ...............................14
2. Pipework.............................................15
3. Wiring.................................................17
4. Protection equipment..........................18

Within 1m
- 14 -
1. Before installation
1. Discharge line
2. Gate valve
3. Check valve
4. Pressure gauge
5. Motor
6. Magnetic drive pump
7. Expansion joint
8. Vacuum (compound) gauge
9. Straight suction line
10. Suction line
11. Air vent line
12. Pipe support
■Installation location
1. Select a flat and sound foundation where is free from vibration
2. Keep a work space wide enough for motor removal (back pull out), assembly or dismantlement.
3. The foundation should be larger than a pump base footprint.
■Pump position
1. Install the pump as close to a supply tank and under flooded suction application.
2. In the suction lift application, arrange the auxiliary line for priming and mount a foot valve at the suction
pipe end.
■Foundation work
1. See the diagram and instructions below as necessary.
2. For the pump without the base plate, do not mount the foot in the foundation. Otherwise, the pump can
not be dismantled.
Concrete foundation
Foundation bolt
Baseplate Liner
Installation
Piping layout

- 15 -
Z
X
Y
X
Z
Y
Installation
2. Pipework
■Tightening torque between the pump and pipework
Connect the pump to pipework via inlet and outlet flanges according to the tightening torque below. Tighten
bolts diagonally at even tension.
Model Bolt size Tightening torque
MXM22/44/54 M16 79N•m
NOTE1: The table is based on use of metal pipe flanges with rubber gaskets.
NOTE2: Select the best bolt length so as not to come in contact with the pump.
■Piping load and momentum
Try not to apply heavy load to the pump inlet and outlet flanges. Permissible piping weight and moment to
the pump are as below.
Permissible stress to inlet & outlet flanges
Load direction Load kN
Discharge flange Suction flange
Fx 0.71 0.89
Fy (compression/tension) 0.89/0.44 0.58
Fz 0.58 0.71
Permissible moments to inlet & outlet flanges
Load direction Moment kN•m
Discharge flange Suction flange
Mx 0.35 0.46
My 0.46 0.35
Mz 0.23 0.23

- 16 -
Installation
■Suction line
1. Flooded suction application
Always realize the flooded suction.
2. Suction line bore
A suction line bore should be equal to or larger than pump inlet.
3. Shortest line length
Keep the shortest length with the minimum number of bends.
4. Straight line length
A suction line should be laid on straight at least for 500mm from the pump inlet.
For easy pump removal and maintenance, install a removable pipe of 300mm in the straight line.
5. Air pocket
Do not make any projection or arched line where air may be trapped.
A suction line should be laid with a rising gradient of 1/100 toward the pump.
6. Use of the eccentric reducer
If the pump inlet bore is different from that of suction pipe, use the eccentric reducer. Upper side should
always be level. Air may be trapped if it is mounted upside down.
7. Gate valve installation
In flooded suction application, always install a gate valve on a suction line for overhaul & inspection.
8. Flushing line
Lay on a flushing line for cleaning the pump when handling a harmful liquid.
9. Suction line end
The suction line end should always be at least 500mm lower than a liquid level for the prevention of
entrained air.
10. In suction lift application
• The distance between the end of a suction line and the bottom of a supply tank should be 1 to 1.5 times
wider than the suction line bore.
• Be sure to install a foot valve or a check valve on a suction line.
11. Piping support
Use metal supports so that the pump is not subject to piping weight or thermal stress.
12. Connections
Each connection must be completely sealed so that air can not be entrained. Otherwise, a poor flow or
the seizure of bushing may result.

- 17 -
Installation
■Discharge line
1. Discharge line bore
When a discharge line is long but its bore is equal to the pump outlet bore, the specified performance
may not be obtained because pipe resistance becomes high. Calculate pipe resistance in advance to
decide a discharge line bore.
2. Gate valve installation
Install a gate valve on a discharge line to adjust flow rate and protect the motor from overload. Install
check valve as necessary, the optimum installation order is : Pump →Check valve →Gate valve.
3. Discharge valve installation
A discharge valve should be positioned about 1m away from the pump. An air vent line should be mount-
ed near the valve in order to prevent air from remaining.
4. Pressure gauge
Install a pressure gauge on a discharge line to check a discharge capacity and delivery head.
5. Check valve
Install a check valve in the following cases.
• Discharge line is longer than 15m.
• A delivery head is higher than 15m.
• The distance between a liquid level in a supply tank and the top end of a discharge line is 9m or longer.
• Two pumps run in parallel.
6. Air vent line
Lay on an air vent line on a discharge line when the horizontal line length is longer than 15m or more.
7. Drain
Install a drain valve as necessary (to prevent liquid from freezing in the pump, etc.).
8. Piping support
Use metal supports so that the pump is not subject to piping weight or thermal stress.
9. Priming line
Lay on a priming line on a discharge line in suction lift application.
3. Wiring
Electrical works or wiring must be carried out by a qualified person according to local laws or regulations.
• Use the electromagnetic switch which conforms to the motor specifications of voltage and capacity etc.
• When installing the pump out of doors, take a measure to prevent rain water from getting into the switch.
• Install the electromagnetic or the push-button switch apart from the pump.
*See the instruction manual of the motor manufacturer for the motor detail.

- 18 -
4. Protection equipment
It is recommended to install the following monitoring devices in order to protect the pump.
1. Current sensor/ Power sensor The sensors monitor the motor load and stop the pump on the detection
of load change, giving an alarm.
2. Pressure sensor The sensor monitors the starting pressure and stops the pump on the
detection of pressure change, giving an alarm.
3. Flow sensor The sensor monitors the discharge flow and stops the pump on the
detection of flow change, giving an alarm.
4. Level sensor The sensor monitors the liquid level in the tank and stops the pump
when it falls below the specified level, giving an alarm.
It is recommended to install two or more monitoring devices. The more monitoring devices, the more pos-
sibility of protecting the pump.
The DR series dry running protector (electric current sensing type) is also available as an option. Contact us
for detail.
Installation