YAMADA NDP-5FST, NDP-5FDT, DP-10BA, DP-10BS, DP-10BP Operation Manual

Doc. No. NDP174U-18

OPERATION MANUAL

YAMADA AIR-OPERATED DOUBLE DIAPHRAGM PUMP

NDP-5 series
DP-10 series
NDP-15 series

1

·Introduction

Thank you for purchasing a Yamada Diaphragm Pump. This product is a positive-displacement pump that
transfers fluids by movement of diaphragms driven by compressed air through a unique switching
mechanism. The casing that comes in contact with the fluid is made of aluminum, stainless steel, forged iron,
polypropylene, polyvinylidene fluoride depending on the model you have selected according to the type of
fluid to be pumped. The diaphragms are made of rubber-based or plastic-based materials.

·For safe operation

This document contains information vital for safe and efficient operation of this product. Before using the
pump, be sure to read this document carefully, particularly the "warnings and cautions," and be fully
familiar with the operating procedures. Be sure to keep this document handy for future reference.

2

·Warnings and cautions

For safe use of this product, be sure to note the following: In this document, warnings and cautions are
indicated by symbols. These symbols are for those who will operate this product and for those who will be
nearby, for safe operation and for prevention of personal injury and property damage.
The following warning and caution symbols have the meanings described below. Be sure to remember their
meanings.

If you ignore the warning described and operate the product in an
improper manner, there is danger of serious bodily injury or death.

If you ignore the caution described and operate the product in an
improper manner, there is danger of personal injury or property

damage.
Furthermore, to indicate the type of danger and damage, the following symbols are also used along with
those mentioned above:

This symbol indicates a DON'T, and will be accompanied by an explanation on something
you must not do.

This symbol indicates a DO, and will be accompanied by instructions on something you must
do in a certain situation.

·Operating caution

Before using this product

WARNING

• When using compressed gas (hereinafter called "compressed air") to drive this pump, be sure
it is one of the following:
* Compressed air supplied from an air compressor
* Nitrogen (N

2

) gas
Use of compressed air other than the above may cause air pollution, damage to the pump, or
even an explosion.

• Pressure Ratings are dependent on pump material and liquid temperature variations.
Please see “Temperature Pressure Curve” in the [10.1 Main Specification] and check for the
allowable working pressure at the specific temperature of the liquid being pumped.
Air pressure and discharge pressure must not exceed the allowable working pressure.
If air pressure and discharge pressure exceed the allowable working pressure, it may cause
liquid leaks, damaged pump casings or diaphragms and could cause a fatal accident.

• When moving this product, make sure that the internal pressure is released. If the pump is
moved while under pressure, any shock imparted by droppage, etc. may damage the pump or
even cause an explosion.

• Hazardous fluids (with strong acid or alkali, flammable or toxic) or gas bubbles generated by
such fluids may cause serious injury or even death if accidentally inhaled or consumed or if
they come into contact with the eyes or adhere to skin. Therefore, the following precautions
are strongly advised.
*Be fully familiar with the properties of the fluid to be pumped and work in strict
accordance with the operating instructions provided by the suppliers of such fluids
(such as wearing goggles, gloves, mask or work clothes).
*When storing a hazardous fluid, strictly comply with the regulatory procedures
(such as using proper containers, storage conditions, etc.).
*Always install the piping and exhaust port of this pump away from human and animal
traffic.

• When a diaphragm is damaged, fluid will gush out together with air through the exhaust
port. Also when pump has positive suction head, liquid will be forced out from exhaust port
due to positive inlet pressure. Make sure to provide protective measures in consideration of
possible leakage of fluid (see NOTE: Arranging outside exhaust on P.11). For example using a
hose and pit etc., also be sure you are using a model with appropriate corrosion resistance
for the fluid to be pumped.

WARNING:
CAUTION :

3

WARNING

• When installing this product, be sure to connect a ground wire from the specified position of
this product (excluding NDP-5FPT, NDP-15FP□).
When this product is installed and operated without the ground wire properly connected,
friction between parts, as well as abrasion caused by the flow of some fluids inside the
casing, may generate static electricity. Also, depending on the type of fluid being pumped and
the installation environment (such as gases in the air and type of surrounding fixtures),
static electricity could become a cause of fire or electric shock.

• Improper grounding, poor ventilation, or unshielded fire or spark can create a danger of fire
or explosion. Therefore, the following precautions are strongly advised.
*All peripheral equipment and piping connected to this product should be properly
grounded.
*To pump flammable liquids, use a model with an aluminum or stainless-steel casing.
*Whenever you notice any spark while operating this product, immediately stop its
operation, and do NOT start using it again unless you are sure of the cause and corrective
actions have been taken.
*Depending upon the type of fluid being pumped, bubbles of flammable gas may be
generated. Make sure that ventilation is satisfactory.
*This product itself, its piping and exhaust ports should be kept away from unshielded fire,
spark and other causes of ignition. If a diaphragm is damaged, fluid will gush out together
with air from the exhaust port.
*Do NOT leave gasoline or solvent etc. that contains waste at the work site.
*Machinery and other equipment near the place of installation of this product should be
properly insulated to prevent conduction with each other.
*Do NOT operate heating devices that create flames or have heating filaments anywhere
near the pump or its piping.
*If there are flammable gases in the air while the pump is operating, do NOT switch electric
appliance on and off.
*Do NOT operate a gasoline engine at the work site.
*Restrict smoking at the work site.

• After you shut down the pump and disconnect the piping, some fluid may remain inside the
pump. Also, if the pump is left unused for a prolonged period, some fluid may remain inside
the pump and connected piping. Therefore, be sure to purge the system of fluid and clean the
pump before prolonged disuse. If the product is left unused for a prolonged period with fluid
remaining in the connected piping as well as the pump itself, the fluid may expand,
depending on the ambient temperature (because of freezing or heat), which may cause
damage to the pump and/or piping and possible leakage of fluid.

• Always use genuine Yamada parts when replacing component parts of this product. Do NOT
attempt to modify the components parts or replace them with other than genuine Yamada
parts.

• Torque of all tightening parts must be inspected before operation. Designated torque are
mentioned in maintenance manual.

4

WARNING

• When pumping a hazardous fluid (hot, flammable, strong acid, etc.) with this product,
provide protective measures (install a pit, a protection box, sensors, etc.) in consideration of
possible leakage of fluid, and post warning
signs at necessary places.
Make the warning symbols in
[12.Warning symbols], and
attach them to the casing and
piping, etc.
Leakage of fluid may cause fire,
air pollution or a serious accident.
When pumping a hot fluid, the
casing and piping will become hot,
which may burn the skin when
touched.

• Before using this product, be sure you are familiar with the precautions regarding the fluid
to be pumped, and verify the corrosion resistance of the parts that will come into contact
with the fluid. NEVER use the product with any fluid against which it does not have
sufficient corrosion resistance or with a fluid that poses a risk of explosion. If you are unsure
of the corrosion resistance, contact your dealer or our regional office. If you use this product
with any fluid against which the parts that will come in contact with the fluid do not have
sufficient corrosion resistance, it may result in damaging the product or leakage of fluid.

• When working in the vicinity of pumping of fluid with this product, be sure to wear
protective gear (goggles, mask, etc.).

• When using this product, observe the relevant regulatory rules concerning fire prevention,
labor safety standards, etc.

• If you have any questions on the operation of this product (method of connection or
installation), contact your dealer or our regional office.

CAUTION

• When operating this product, it may generate loud operating noise, depending upon the
condition of use (fluid pumped, supply air pressure and discharge pressure). If regulatory
rules apply, provide appropriate acoustic measures where necessary. (For the noise value of
this product, see [10.1 Main specifications].)

• To drive this product, use supply air with minimum moisture content.

• If a diaphragm of this product is damaged, supply air may mix with the fluid or the fluid
may flow into the main body (air-switching portion). If air supply is inadequate or
contaminated, do NOT operate the pump.

• While operating this product, do NOT cover the intake port by hand.

• If the pump remains unused for a long period of time, or you have misgivings about running
the pump, please consult with the dealer where you purchased it or our Sales office.

Fig.0.1

5

Table of contents

· Introduction ················································································ 1

· For safe operation

······································································· 1

· Warnings and cautions

································································ 2

· Operating caution

······································································· 2

· Table of contents

········································································· 5

1. Names of parts and materials

1.1 NDP-5 series ·········································································· 6

1.2 DP-10 series ··········································································· 7

1.3 NDP-15 series ········································································· 8

2. Assembly

2.1 Installation of accessories ························································· 9

3. Installation

3.1 Method of transport ································································ 10

3.2 Installing the pump ································································ 10

3.3 Connecting the ground wire ····················································· 12

4. Connection

4.1 Connecting fluid piping ··························································· 13

4.2 Connecting air piping ······························································ 14

5. Operation

5.1 Method of operation ································································ 15

5.2 Flow adjustment ···································································· 15

5.3 Shutdown ·············································································· 16

5.4 Releasing the pressure ···························································· 16

6. Method of cleaning ··································································· 17

7. Daily check ·············································································· 18

8. Troubleshooting

8.1 Pump does not run ·································································· 18

8.2 Pump runs, but fluid does not come out······································ 18

8.3 Flow (discharge volume) decreased ············································ 18

8.4 Liquid leaks from exhaust port (silencer) ··································· 19

8.5 High air consumption during in operation ·································· 19

8.6 Irregular noise ······································································· 19

8.7 Irregular vibration ································································· 19

9. Returning the product for servicing

9.1 Before returning the product ···················································· 19

10. Main body specifications

10.1 Main specifications ······························································· 20

10.2 Appearance and dimensions···················································· 22

10.3 Performance curve ································································ 26

11. Limited warranty ··································································· 28

12. Warning symbols ···································································· 29

6

1. Names of parts and materials

1.1 NDP-5 series

A: Air Valve F: Pump Base
B: Reset Button

G: Discharge Port
C: Out Manifold H: Intake Port
D: Out Chamber

I: Lift Point

E: In Manifold

J: Ground Connection Point

NDP-5FAT NDP-5FPT
NDP-5FST NDP-5FVT
NDP-5FDT

Type FAT FST FPT FVT FDT

Switching Portion PPS

Fluid contact Portion ADC12 SCS14 PPG PVDF POM

Diaphragm PTFE

Flat Valve PTFE

O Ring PTFE

Valve Seat SUS316 PPG PVDF POM

Center Disk A5056 SUS316 PPG(SUS304) PVDF(SUS304) POM(SUS304)

* PTFE is the only diaphragm available for the NDP-5 series.

■List of accessories

•CD Operation Manual ················· 1

•Simple Operation Manual ·········· 1

•Parts exploded view ···················· 1

•Parts list ···························· 1

•Air Valve ···························1

(excluding FPT)

7

1.2 DP-10 series

A: Air Valve F: Pump Base
B: Reset Button

G: Discharge Port
C: Out Manifold H: Intake Port
D: Out Chamber

I: Lift Point

E: In Manifold

J: Ground Connection Point

DP-10BA□ DP-10BS□ DP-10BP□ DP-10BA□-D

DP-10BS□-D

•Aluminium type([ ]: Drum type)

Type BAC

[BAC-D]

BAN

[BAN-D]

BAT

[BAT-D]

BAH

[BAH-D]

BAS

BAH/T

Switching Portion ADC12

Fluid contact Portion ADC12 [ADC12, SUS304]

Diaphragm CR NBR PTFE TPEE TPO TPEE

Ball/O Ring CR/PTFE NBR/PTFE PTFE TPEE/PTFE TPO/PTFE PTFE

Valve Seat A5056

Center Disk A5056

•Stainless-steel type([ ]: Drum type)

Type BSC

[BSC-D]

BSN

[BSN-D]

BST

[BST-D]

BSH

[BSH-D]

BSS BSH/T

Switching Portion ADC12

Fluid contact Portion SCS14 [SCS14, SUS304]

Diaphragm CR NBR PTFE TPEE TPO TPEE

Ball/O Ring CR/NBR NBR PTFE TPEE/NBR TPO/EPDM PTFE

Valve Seat SUS316

Center Disk SUS316

•Polypropylene type

Type BPC BPN BPT BPH BPS BPH/T

Switching Portion ADC12

Fluid contact Portion PPG

Diaphragm CR NBR PTFE TPEE TPO TPEE

Ball/O Ring CR/NBR NBR PTFE TPEE/NBR TPO/EPDM PTFE

Valve Seat CR NBR PPG PPG PPG PPG

Center Disk PPG(SUS304)

*CR, NBR, PTFE and TPEE diaphragms are set up in DP-10BA□-D, DP-10BS□-D series.

■List of accessories

•CD Operation Manual ················· 1 •Air Valve ·································· 1

•Simple Operation Manual ·········· 1

•Silencer ··································· 1

•Parts exploded view ···················· 1 •Suction Pipe Set ························ 1

•Parts list ···························· 1 (only BA

□-D,BS□-D)

8

1.3 NDP-15 series

A: Air Valve F: Pump Base
B: Reset Button

G: Discharge Port
C: Out Manifold H: Intake Port
D: Out Chamber

I: Lift Point

E: In Manifold

J: Ground Connection Point

NDP-15BA□ NDP-15FP□
NDP-15BS□ NDP-15BPS
NDP-15FVT

NDP-15FDT

•Aluminum type
Type BAC BAN BAT BAH BAS BAH/T

Switching Portion PPS

Fluid contact Portion ADC12

Diaphragm CR NBR PTFE TPEE TPO TPEE

Ball/O Ring CR/NBR NBR PTFE TPEE/NBR TPO/EPDM PTFE/NBR

Valve Seat A5056

Center Disk A5056

•Stainless-steel type
Type BSC BSN BST BSH BSS BSH/T

Switching Portion PPS

Fluid contact Portion SCS14

Diaphragm CR NBR PTFE TPEE TPO TPEE

Ball/O Ring CR/NBR NBR PTFE TPEE/NBR TPO/EPDM PTFE/NBR

Valve Seat SUS316

Center Disk SUS316

•Polypropylene type([ ]: Polyvinylidene fluoride type)
Type FPC FPN FPT

[FVT]

FPH FPS

BPS

FDT

Switching Portion PPS

Fluid contact Portion PPG [PVDF] POM

Diaphragm CR NBR PTFE TPEE TPO PTFE

Flat Valve/ Ball PTFE PTFE/ TPO PTFE

O Ring NBR NBR PTFE NBR EPDM PTFE

Valve Seat PPG [PVDF] POM

Center Disk PPG(SUS304) [PVDF(SUS304)]

POM

(SUS304)

*Only PTFE diaphragm is setup in polyvinylidene fluoride, polyacetal type.

■List of accessories

•CD Operation Manual ················· 1 •Parts list ·································· 1

•Simple Operation Manual ············ 1 •Air Valve ·································· 1

•Parts exploded view ···················· 1

(excluding FP□)