Trochoid pump

●Tightening Torque for Pump Connecting Screws
●
The maximum torque allowances when tightening the screws used for the Trochoid pump's pipes
are as shown in the table below.
: The pump bore may become damaged if these values are exceeded.
: The use of seal tape or liquid sealants may result in reduced resistance
friction and over tightening, which in turn could damage the pump bore.
●Pipe Connections
●
Carefully arrange the pipes so that the connections are completely sealed to prevent any leaks or
the intake of air.
●
Always be sure to use pipe supports so that the pipes are not placing any weight on the pump.
●
When making connections, always first confirm that the pipe lengths and angles are correct so
that no unnecessary pressure is placed on the pump.
●
A pressure gauge should be installed so that pump conditions can be easily ascertained.
●
Stop valves, union jacks and other couplings should be used to make pump maintenance easier.
●
When handling liquids with very high viscosities, the pipes should have diameters bigger than the
pump in order to minimize pressure loss.
●
Some of the high-pressure hoses and other parts have narrow internal diameters. Therefore, be
sure to confirm the inner diameter of not only the screw-in sections, but of the various pipes as
well.
●Types of Pipes and Couplings
●
Always be sure to clean the inside of the pipes before attaching to the pump. This is because the
pipes may contain dust from when they were stored or metallic dust from when they were
threaded.
●
Always flush water through the pipes and confirm that they are completely clean before
assembling.
: The pump and connected equipment may become damaged if the pipes
are not adequately cleaned.
●Pipe Arrangement for Suction Side
●
For the suction side select pipes with a thickness that will keep the fluid velocity in the pipe at
1.5m/sec or less.
〈Calculation〉
●
Calculate the suction head based on the minimum oil level.
Hmax
Fluid Velocity（m/sec）= ―――――――――――――――――
Pipe Cross-section Area（ｍ
2
）
Pump Flow Rate（m
3
/sec）
CAUTION
CAUTION
CAUTION
Diameter Rc
1/8
10
1/4
20
3/8
20
1/2
25
3/4
30
1
70
1-
1
/
4
80
1-
1
/
2
90
Torque N・m
Pipe Arrangement
4
●
Keep the suction-side piping as far away as possible from the return port of the relief valve or
actuator so that there will be no negative influence from the returning oil.
●
Piping on the suction side should be as short as possible and with the smallest number of curves
possible.
●
Thoroughly inspect all of the valves, cocks and couplings before assembling the pipes. Do not
use any items with cavities or narrow ports.
●
When bending or soldering the pipes, make sure that these areas do not become too small.
●
Avoid any sudden changes to pipe cross sectional areas.
●
Cleanly cut away the opening section of the packing.
●
Be careful to not let any air into the pipes.
●
Use gate-type models when installing valves.
●
Set the suction side resistance to a pressure range of 0.03MPA∼0MPa.
: Air in the pipes or the generation of air bubbles could result in pump
noise, vibrations and the generation of heat, which in turn could damage
the pump.
●
If pressure will remain in the discharge-side pipes when operations are stopped, the check valve
will need to be installed not on the suction side, but rather on the discharge side.
●Discharge Side Piping
●
Select pipes wide enough that the speed of the fluids flowing through the discharge pipes will be
3m/sec.
●Filters
●
Usually a 150 mesh filter is used for the suction filter. Try to use filters with the largest capacity
possible.
●
Confirm the manufacturer specifications and select filters with a passage resistance of 0.01MPa
or less.
●
The main purpose of the suction filter is to remove any large objects that could hamper pump
operations. Even very minute matter passing through this filter can dramatically reduce the life of
the pump. Therefore, the liquid used with the pump will need to be changed on a regular basis.
Furthermore, maintenance will need to be performed on a regular basis when using 11-micron or
smaller filters.
: Foreign matter inside the oil may dramatically reduce the life of the pump.
In extreme cases this matter can even damage the pump. Therefore, the
filters will need to be washed on a regular basis. The use of clogged
filters may result in unusual noise, vibrations and poor discharge.
CAUTION
CAUTION
Not Possible
Not Possible
Not Possible
Possible
Possible
Air
Air
Return Return
Possible Not Possible
5
●Safety Equipment
●
Be sure to equip the motor with an earth-leakage circuit breaker and overload protection
equipment. Use this equipment only after first confirming that the ratings are within the prescribe
ratings written on the motor's nameplate.
●
Be sure to follow any other applicable electrical standards.
: Failure to use earth-leakage circuit breakers and overload protection
equipment could result in the equipment becoming damaged and/or the
motor becoming burned.
●
Install a galvanometer, pressure sensors and other devices at the pump discharge port so that
inspections can be made through test runs without any fluids inside the pump. These inspections
are conducted to prevent burning of the oil supply section.
●
The pump oil seals and packing cannot be used indefinitely. Installation should be in a safe
location and protection equipment should be used to ensure that people are not injured and the
equipment is not damaged in the event that there is an oil leak.
●Safety Measures
●
Children and others that cannot readily recognize dangerous conditions should not be allowed to
approach or touch the equipment.
●
Protective equipment should be installed to prevent fingers, hands or other objects from
becoming caught in the drive section.
: Serious injury may result if a finger, hand or other object becomes caught
in the equipment.
●
Do not touch the pump or motor during or immediately after operations.
: Touching the pump or motor may result in burns.
●
There may be sparks from the centrifugal force switch section when starting up certain single-
phase motors (IME200S, 2ME200S, 2ME400S, 2MY750S).
: Do not place any flammable liquids or materials in the area surrounding
the motor. Such items could catch fire.
●Before Operating
●
Confirm the direction of the pump rotation, suction port and discharge port.
●
The rotation direction for Nippon Oil Pump motors is shown in the wiring plates on the motor
frame and terminal box section. Make the necessary connections after first checking these
plates.
1）When using a Nippon Oil Pump motor (3-phase power source) set each of the pumps so
that their respective rotations are in accordance with the standard rotation directions
shown in the wiring diagram below.
2）For an all-purpose motor (3-phase) equipped with a base coupling, make the wiring
connections after first confirming the rotation direction displayed on the pump.
U V W

R S T
Preparations
DANGER
WARNING
WARNING
CAUTION
Safety
6
: Mistakes in the rotation direction and positioning of the suction and
discharge ports could result in oil leaks or damage to the pump.
●
Check whether the tank pipes on the suction side are clean or contain any oil.
●
Confirm that there are no loose sections in the piping.
●
Confirm that the valves around the pump are all fully opened.
●
The initial operation of the pump should be inching to confirm the direction of the pump rotation.
●Test Run
１）Dry Run
Do not operate the pump for more than 10 seconds when there is no liquid in the system.
２）When Suction not Possible
Confirm the following points whenever suction is not possible.
①Has resistance at the discharge side become so large that the removal of air is difficult?
②Is resistance at the suction side too large? Is the pipe length too long?
③Is air being captured?
④Has the system run out of oil? Is the pipe reaching the liquid level?
⑤Is the number of pump rotations insufficient?
●Initial Operations Inspection
●
Be sure to make the necessary inspections before initial operations. In particular, be sure to
check for any oil leaks, abnormal noise and heat generation.
: If any abnormalities are discovered, immediately stop pump operations
and remedy the problem area.
●Regular Inspections
●
Any important safety parts that are used should be inspected at least once a year to confirm that
they are operating correctly.
●
These inspections should be performed by a service technician working for or approved by Nippon
Oil Pump.
●
Seal kits and spare parts should be kept on hand to deal with sudden faults and poor operations
due to the gradual drop in performance over many years.
●
The most common reason for poor performance is the use of fluids that have become dirty or
degraded. Therefore, the oil will need to be replaced and other maintenance will need to be
performed on a regular basis.
●
Be sure to cease all operations if there are any strange sounds, heat generation or other
abnormalities when using a motor that had been kept in storage for a very long time.
●
The coupling used with the Trochoid pump equipped with a motor is a consumable part and so will
need to be replaced on a regular basis (every year or 8,000 hours of use).
●
Faults caused by conditions outside the stated specifications or attributed to foreign matter or
other external causes are not covered by the warranty.
Warranty
Maintenance
CAUTION
Inspections
CAUTION
7
●Confirm the necessary flow rate.
●
Refer to the specifications on pages 1 and 2.
●
The discharge amount will vary depending on the type of liquid used, temperature and pressure.
●
Pumps that provide plenty of leeway should be selected.
●Confirm the necessary pressure.
●
Refer to the specifications on pages 1 and 2.
※The setting must not exceed the pump's maximum applicable pressure and the motor's output.
●Confirm the relief valve set pressure.
●
The relief valve pressure is adjusted to the cracking pressure (refer to page 57).
※The setting must not exceed the pump's maximum applicable pressure and the motor's output.
※Cracking pressure is the pressure at which the valve opens to allow a certain amount of the oil to
flow through when the pressure within the circuit rises.
●
The relief valve can be used as both a safety valve and as an adjustment valve. Two types of
relief valves are available depending on the intended purpose. Specifically, these are an external-
return type and an internal-return type (refer to page 58).
: When using the internal-return type as the safety valve, do not allow
operations to continue for more than 30 seconds with the pump running
and the pump discharge side completely closed. Doing so could result in
the pump or motor becoming burned.
: When using the internal-return type as an adjustment valve, do not make
any settings that would allow for the relief amount to exceed 50% of the
pump discharge amount. This could result in abnormal pump heat
generation or damage to the pump.
: An external-return type relief valve can be used under these conditions
without any problems. However, in this case the relief oil should be
completely returned to below the liquid level of the tank.
●
Set the relief valve set pressure at a level higher than the amount of pressure actually needed.
The necessary discharge amount will not be obtained if oil leaks from the relief valve.
●Confirm the Applicable Liquids
●
Applicable Liquids
Trochoid pumps and lunary pumps can handle a very wide range of applications, but be aware
that these pumps were intend for use with oils.
●
The settings and performance indications for all of the pumps shown in this catalog are based on
the use of ISO VG46 oil at a temperature of 40°C, except for specifically stated special
applications.
There will be differences in terms of performance and durability when using different oils. Please
feel free to ask your Nippon Oil Pump representative for more information.
●
Trochoid pumps and lunary pumps adopt a self-lubricating method so that the rubbing surfaces
and bearings can be lubricated by the liquid used in the pumps.
: The pump may become damaged if it is used with water, liquids without
lubricating properties or liquids with corrosive properties.
●
The form may change and there may be limits on the maximum applicable pressure when using
liquids with low viscosities. Please feel free to ask your Nippon Oil Pump representative for more
information.
: The pump may become damaged when using liquids with low viscosity.
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
Pump Selection
8
●
Some fuel oils contain properties that will cause the standard oil seals to swell. Be sure to
confirm the specifications before using these oils.
: Do not use gasoline or any other volatile liquids. Doing so could result in
explosions or fires.
●Ambient Temperature
●
Trochoid and lunary pumps can be used in a temperature range of −20∼40°C.
●
The temperature range under which a motor can be used is −10∼40°C.
: Operations outside of the above temperature ranges could damage the
Trochoid pump, lunary pump or motor, resulting in a serious accident.
●Confirm the ambient temperature range.
●
The temperature range for the applicable liquids is −5°C∼80°C.
●
The difference in temperature between the pump and the liquid must be within 40°C.
: Operations outside of the above temperature ranges could dramatically
shorten the life of the Trochoid and lunary pumps, lower performance and
result in leaks.
Operations outside of the above temperature ranges require special
specifications. Please feel free to ask your Nippon Oil Pump
representative for further details.
: The use of very hot oil could cause burns to the pump from leaking oil.
●Confirm the applicable viscosity ranges.
●
The viscosity range for liquids used in the Trochoid pump is 10∼500mm
2
/sec.
●
The viscosity range for liquids used in the high-viscosity pumps (3V・Lunary pump) is 46∼
2,000mm
2
/sec.
: Operations outside of the above viscosity ranges could dramatically
shorten the life of the Trochoid and Lunary pumps, lower performance and
result in leaks.
●
The volume efficiency (discharge amount) drops as the viscosity becomes lower.
●
The required power (motor output) increases as the viscosity becomes higher.
※Settings should be made after taking into account the assumed low winter temperatures.
●
The maximum applicable output is strictly limited when using low viscosities. Please feel free to
ask your Nippon Oil Pump representative for further details.
●
Operations outside of the above viscosity ranges require special specifications. Please feel free
to ask your Nippon Oil Pump representative for further details.
●Confirm the rotation direction.
●
The rotation, suction and discharge directions for the Trochoid and lunary pumps are fixed, except
for those models that offer forward and reverse rotation.
Make the settings from the drive side in accordance with the rotation direction displayed on the
pump nameplate.
●
The Trochoid and lunary pumps have holes on the pump suction side (negative pressure) to
release pressure from the oil seal section in order to protect these seals. If a mistake is made in
setting the rotation direction, the suction and discharge positions will be switched. As a result,
discharge pressure will flow through the holes intended for the release of pressure. This pressure
will build up against the oil seal, causing the seal to break and oil to be sprayed out of the pump.
: Be sure to correctly set the pump rotation direction. A mistaken rotation
setting could break the oil seal, resulting in the spray of oil outside the
pump and unexpected accidents.
WARNING
CAUTION
WARNING
CAUTION
CAUTION
WARNING
9
●Confirm the amount of power needed for the pump.
●
The amount of power required by the pump will vary depending on voltage, flow rate and viscosity
of the liquid to be used.
●
Much more power is required as the viscosity of the liquid increases.
※Settings should be made after taking into account the assumed low winter temperatures.
●Confirm the applicable voltage and frequency.
: Using an incorrect voltage or frequency could damage the motor or result in
abnormal pressure or flow rate.
●Confirm the attachment method.
●
Pump driven by special-purpose motor: Trochoid pump with motor
●
Pump driven by general-purpose motor: Trochoid pump with motor and base coupling or lunary
pump with motor and base coupling
●
Power source other than electric motor: Trochoid pump, lunary pump
●
Trochoid and lunary pumps are designed on the premise that the motor and shaft center are
arranged in a straight line. Centering of the drive shaft and pump should be within TIR0.05.
●
Please feel free to ask your Nippon Oil Pump representative for information about drive methods
in which the load is applied to the radial and thrust directions.
: Poor alignment between the motor and the Trochoid or lunary pump may
result in vibrations, loud noises and damage to the pump.
: When attaching the coupling to the pump shaft, do not forcibly hammer
the coupling into place. Doing so could result in poor pump operations.
●
Set the suction head for the Trochoid and lunary pumps to within 1m when the number of
rotations is 1,000∼2,500min
−1
. Set the suction side resistance to a pressure range of 0.03MPA
∼0MPa.
●
Suction side pressure greater than −0.03MPa could result in cavitation, abnormal noise, heat
generation, poor discharge and damage to the pump.
: Suction capabilities will drop when there is large resistance on the
discharge side.
: Suction capabilities will drop dramatically when air enters from the
suction side.
CAUTION
CAUTION
Suction Capabilities
CAUTION
CAUTION
Rotate the dial gauge 360° and set so that the dial gauge run-out is within 0.05mm.
Pump-side Shaft
Drive-side Shaft
Pump Drive Method
CAUTION
Motor Selection
10
TOP-1A
TOP-1A
■Specifications
○The above maximum discharge and maximum revolution values are for when using ISO-VG46 oil with an oil temperature of 40°C.
○The approximate weight values shown in the brackets (  ) are for when a relief valve is attached.
○Select the best motor using the lines in the "Required Power" table as the applicable standards.
Model
TOP-10A
TOP-11A
TOP-12A
TOP-13A
0.8
1.5
2.5
4.5
1.2
2.2
3.7
6.7
1.4
2.7
4.5
8.1
0.5
0.5
0.5
0.5
3000
2000
1800
1800
Item
Theoretical 
Displacement
cm
3
/rev
Max. Discharge 
Pressure
MPa
Max. Revolution

min
−1
0.5（0.8）
0.5（0.8）
0.6（0.9）
0.8（1.1）
Approx. Weight
kg
■Model
■Performance Table
Rotation 
Direction
TOP - 10A
Model Examples:
TOP-10AVB (with relief valve)
TOP-11AR (clockwise rotation as seen from the end of the shaft)

Theoretical Discharge /min
1500min
−1
1800min
−1
Relief Valve
Special 
Symbol
11A
12A
13A
No mark: Counter-clockwise rotation as seen from the end of the shaft
(standard rotation direction)
R: Clockwise rotation as seen from the end of the shaft
No mark: Without relief valve
VB: With relief valve
US、VF
(Refer to page 63.)
At 1,450 Rotations At 1,750 Rotations
●Flow Rate Characteristics
Test Conditions Oil: ISO-VG46 with a temperature of 40°C
●Flow Rate Characteristics
●Required Power ●Required Power
11
-
○The relief valve set pressure is 
 cracking 0.3MPa.
0
1
2
3
4
5
6
7
8
9
10
0.1 0.2 0.3 0.4 0.5
Pressure（MPa）
Discharge Amount（ /min）
13A
12A
11A
10A
0
1
2
3
4
5
6
7
8
0.1 0.2 0.3 0.4 0.5
Pressure（MPa）
Discharge Amount（ /min）
13A
12A
11A
10A
0
20
40
60
80
100
120
140
160
0.1 0.2 0.3 0.4 0.5
Pressure（MPa）
Shaft Power（W）
13A
12A
11A
10A
20
40
60
80
100
120
140
160
0.1 0.2 0.3 0.4 0.5
Pressure（MPa）
Shaft Power（W）
13A
12A
11A
10A
0
■Dimensional Diagrams
Model：TOP - 1A
Model：TOP - 1AVB
Model：TOP - 1AR
Model：TOP - 1ARVB
12
○
Be sure to check the Nippon Oil Pump homepage for the most up-to-date diagrams and dimensions.
ＥＨ
８
６
１９．５Ｂ
Ａ
５
-０．０５
-０．０９
φ８
-０．０１１
-０．０２８
φ３０
 ０
-０．０２１
Ｇ
２-Ｄ
Ｆ
φ６０
３-φ７
(Effective length)
６８
 
ROTATION
IN
OUT
ＥＨ
８
６
１９．５
５
-０．０５
-０．０９
φ８
-０．０１１
-０．０２８
φ３０
０
-０．０２１
２-Ｄ
Ｆ６８
Ｇ
３-φ７
φ６０
Ｂ
Ａ
(Effective length)
６９
 
ROTATION
ＩＮ
ＯＵＴ
ＥＨ
８
６
１９．５Ｂ
Ａ
５
-０．０５
-０．０９
φ８
-０．０１１
-０．０２８
φ３０
０
-０．０２１
Ｇ
２-Ｄ
Ｆ
φ６０
３-φ７
(Effective length)
６８
 
ROTATION
ＩＮ
ＯＵＴ
ＥＨ
８
６
１９．５
５
-０．０５
-０．０９
φ８
-０．０１１
-０．０２８
φ３０
 ０
-０．０２１
２-Ｄ
Ｆ６８
Ｇ
３-φ７
φ６０
Ｂ
Ａ
(Effective length)
６９
IN
OUT
 
ROTATION
10A
11A
12A
13A
57
57
63
78
37.5
37.5
43.5
58.5
Rc
1
/
8
Rc
1
/
8
Rc
1
/
4
Rc
3
/
8
8
8
8
5
11
11
11
14
3
3
3
5.5
11.5
11.5
11.5
14.5
ABDEFGH
10AR
11AR
12AR
13AR
57
57
63
78
37.5
37.5
43.5
58.5
Rc
1
/
8
Rc
1
/
8
Rc
1
/
4
Rc
3
/
8
8
8
8
5
11
11
11
14
3
3
3
5.5
11.5
11.5
11.5
14.5
ABDEFGH
10ARVB
11ARVB
12ARVB
13ARVB
69
69
75
90
49.5
49.5
55.5
70.5
Rc
1
/
8
Rc
1
/
8
Rc
1
/
4
Rc
3
/
8
8
8
8
5
11
11
11
14
3
3
3
5.5
11.5
11.5
11.5
14.5
ABDEFGH
10AVB
11AVB
12AVB
13AVB
69
69
75
90
49.5
49.5
55.5
70.5
Rc
1
/
8
Rc
1
/
8
Rc
1
/
4
Rc
3
/
8
8
8
8
5
11
11
11
14
3
3
3
5.5
11.5
11.5
11.5
14.5
ABDEFGH
Dimensions
Dimensions
Item
Model
Item
Model
Dimensions
Item
Model
Dimensions
Item
Model
1A
TOP-1ME
TOP-1ME
■Specifications
○The above maximum pressure for motor output values are for when using ISO-VG46 oil with an oil temperature of 40°C.
Model
TOP-10MA
TOP-11MA
TOP-12MA
TOP-13MA
1.2
2.2
3.7
6.7
75

100

200
4

4

4
Continuous

Continuous

Continuous
200
200
220
200
200
220
200
200
220
50
60
60
50
60
60
50
60
60
1390
1660
1690
1430
1720
1730
1410
1690
1710
0.60
0.55
0.57
0.65
0.60
0.60
1.15
1.10
1.05
Type-1 7.5
Type-2 8.0


8.0


9.0
0.5
0.5
0.2
──
0.5
0.5
0.5
0.2
0.5
0.5
0.5
0.5
1.4
2.7
4.5
8.1
0.4
0.3
0.1
──
0.5
0.5
0.3
0.1
0.5
0.5
0.5
0.5
Item No. of Motor Revolutions 50Hz 1500min
−1
No. of Motor Revolutions 60Hz 1800min
−1
Max. Pressure for Motor Output (MPa) Max. Pressure for Motor Output (MPa)
Theoretical 
Discharge
 /min
■Motor Specifications
○Three-Phase Squirrel-Cage Induction Motor ○Totally enclosed ○Class E insulation
■Model
Motor 
Output
Attachment
Relief 
Valve
Rotation 
Direction
TOP - 1ME 75 - -
Output（W） No. of Poles（P） Rating
Voltage（V）
Frequency（Hz）
No. of Revolutions
（min
−1
）
Current（A）
Approx. Weight（kg）
75W 100W 200W 75W 100W 200W
Theoretical 
Discharge
 /min
11MA
12MA
1: Horizontal
2: Flange
No mark: Clockwise rotation as seen from the pump side (standard rotation direction)
R: Counter-clockwise rotation as seen from the pump side
No mark: Without relief valve
VB: With relief valve
○The relief valve set pressure is cracking 0.3MPa.
Motor Output
Relief 
Valve
Rotation 
Direction
TOP - 1ME 100 - 10MA
Model Examples
TOP-1ME 75 - 1 - 10MA VB (75W, three-phase, horizontal, with relief valve)
TOP-1ME 100 - 11MAR (100W, three-phase, counter-clockwise rotation as seen from the pump side)
1ME 200
13MA
11MA
12MA
No mark: Clockwise rotation as seen from the pump side (standard rotation direction)
R: Counter-clockwise rotation as seen from the pump side
No mark: Without relief valve
VB: With relief valve
○The relief valve set pressure is cracking 0.3MPa.
13
10MA

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