Yoshitake SU-20H Bedienungsanleitung

■PDT－169a■

MODEL SU-20H

STRAINER

Installation & Operation Manual

We thank you very much for using the Yoshitake Products. In order to put in use our product

correctly and safely, please make sure to read this manual thoroughly prior to the installation.

Also we kindly request you to keep this manual with care at your hand.

The following safety symbols are used in this manual.

Warning

Indicates that mishandling this product might cause fatal or

serious bodily injury.

Caution

Indicates that mishandling this product might cause bodily

injury or material damage.

Contents

Overview ·····························································1

1. Features ··························································1

2. Specifications ····················································1

3. Dimensions and Weights·······································1

4. Operation ·························································2

5. Pressure loss

5.1. Selection of pipe diameter ··································3

5.2. Pressure loss diagram·······································3

6. Installation

6.1. Example of piping ···········································4

6.2. Precautions during installation and inspection·········4

7. Operating Procedure

7.1. Precautions during operation and inspection ···········5

8. Maintenance Procedure

8.1. Troubleshooting ··············································5

8.2. Precautions during maintenance and inspection ·······5

8.3. Disassembly Procedure ·····································6

8.4. Assembly Procedure·········································6

8.5. Precautions during change the screen····················6

8.6. Exploded drawing············································7

After Sale Service

-1- ■EPDT－169a■

Overview

Used in wide range of purpose as dust removing from water and oil. Mainly used for cooling

water and water for industrial use.

1. Features

（1）A large filtration area is enlarged in consideration of the decline in flow rate capacity because

of the clog.

（2）In view of safety at the time of a setup, the underselling Eyebolt and the leg performed as an

anchor stop are equipped.

2. Specifications

Application

Water , Oil

Nominal Size

200Ａ

Connection

JIS 10KFF flanges

JIS 20KRF flanges

BS4504 PN16 flanges

Maximum Pressure

1.0 MPa

2.0 MPa

1.6 MPa

Temperature range

5～80℃

Material

Body

Ductile Cast Iron

Screen

Stainless Steel

Standard

Screen

Perforated plate

φ6 －9P

φ2.5 －4 P

Element

60 mesh

―

※Upon your request, we can manufacture the types with 20 to 100 mesh screens.

（Perforated plate of no Element isφ2.5 －4P）

Caution

(1) Please collate with attached nameplate and specification of ordered model.

※Please consult factory in case they do not match each other.

3. Dimensions and Weights

(mm)

Flanges

Screen

Weights

(kg)

JIS 10KFF

640

200

400

167

JIS 20KRF

640

200

400

170

BS4504 PN16

640

200

400

170

Figure-1.Dimensions and Weights

-2- ■EPDT－169a■

4. Operation

No.

Parts Name

No.

Parts Name

The screen③removes dust, scale and

other foreign matter out of the fluid

flown from inlet port of strainer.

（Figure-2.）

Body

Plug

Cover

O Ring

Screen

Bolt

Eyebolt

Lock Nut

Name Plate

Plug

Figure-2. Operation

-3- ■EPDT－169a■

5. Pressure loss

To use the strainer most effectively and to fulfill the required criteria thoroughly, please take

the following points into consideration.

5.1. Selection of pipe diameter

When selecting the nominal diameter of pipe, it is necessary to consider the kind of fluid, its

maximum flow rate, allowable pressure loss and piping installation cost among others. Smaller

diameter of pipe makes the lower piping cost, but the pressure loss will be increased and there

are possibilities of abrasion of pipe, noise and vibration due to turbulent flow. If the pipe

diameter is too large, not only the piping cost but also the heat loss will be increased.

As one method of selection of suitable pipe diameter, Japan Industrial Standard (JIS) sets the

standard flow velocity depends on the relative kind of fluid, its characteristic and pipe diameter,

to which please refer.

≪Standard flow velocity of fluid≫

Fluid

Standard flow velocity

Water ,Oil

2 m/s(2～4)

※This list shows the standard flow velocity of relative fluid, which made in reference with the

standard of JIS F7101(Ship’s Machinery Standard Flow Velocity in Pipes).

5.2.Pressure loss diagram

Perforated plate

：

φ6 －9P Element : 60 mesh

Fluid

：

Water

V flow rate （l/min）

ΔP Pressure loss （MPa）

Figure-3.Pressure loss diagram

-4- ■EPDT－169a■

6. Installation

6.1. Example of piping

Figure-4. Example of piping

(1) Installing pressure gauges at inlet and outlet side may help to detect the clogging up of

the screen.

(2) Install the strainer perpendicularly to horizontal lines.

6.2. Precautions during installation and inspection

Warning

(1) As this product is rather heavy in weight, please secure it with lifting devices for

installation on piping. As to the weight of product, please refer to “3. Dimensions and

Weights”.

※Falling the strainer may cause the injury of personnel.

Caution

(1) When installing, confirm if the direction of fluid flow matches with inlet and outlet port of

the product respectively.

※If installed in opposite direction, it will not function as designed.

(2) Carry out the securing of pipes and the product properly.

※Excessive piping stress may cause the deformation of strainer.

(3) When installing, reserve the space shown in Figure-5 for the maintenance and checking

(cleaning of the screen).

※It will be impossible to carry out the maintenance and inspection (cleaning of the screen).

(4) Do not apply excessive load, torque or vibration to the valve.

※The fluid may leak from strainer.

(5) Carry out the connection with pipes properly.

※Improper piping connection may cause the leakage of fluid due to vibration or other

cause. With some kind of fluid, there will be a danger of personnel being scalded.

※The fluid flowed out of pipe end may cause some material damages.

Figure-5.Space of piping

-5- ■EPDT－169a■

7. Operating Procedure

7.1.Precautions during operation and inspection

Warning

(1) Prior to letting the fluid run in the system, make sure that there is no danger when

the fluid flows out of pipe end.

※In case the fluid of high temperature flows out of pipe end, there will be a danger of

personnel being scalded.

※The fluid flowed out of pipe end may cause some material damages.

Caution

(1) Use the strainer in condition of maximum pressure loss of below 0.1MPa. Also keep

cleaning the screen periodically.

※The screen may be damaged.

8. Maintenance Procedure

8.1.Troubleshooting

Trouble condition

Cause of trouble

Countermeasure and remedy

No fluid flows.

1. Screen③is clogged up.

1. Disassemble and clean the

screen③.

2. Stop valves at inlet and/or

outlet side are shut.

2. Open stops valves.

Pressure loss is excessive.

1. Screen③is clogged up.

1. Disassemble and clean the

screen③.

2. Pressure gauge is damaged.

2. Renew the Pressure gauge.

8.2.Precautions during maintenance and inspection

Warning

(1) Completely discharge internal pressure from the strainer, lines, and equipment,

and cool the strainer down to a level where you can touch it with bare hands

before disassembly and inspection.

※Failure to do so may result in injury or burns due to residual pressure or spillage

around the product.

(2) In case the high temperature of fluid is applied, keep the bare hand off the strainer.

※It may cause the personnel being scalded.

(3) Since the screen is heavy in weight, when extracting the screen from the body, make

sure to secure it properly with lifting devices.

※The screen fallen down may cause the injury.

Caution

(1) In case screen is lodged in foreign matter, scales, etc, liquid passing area will be

decreased and fluid will not flow smoothly. Please clean up a screen periodically.

※If remain untouched, differential pressure will become excessive and it leads to breakage

of a screen and a bad influence on a piping system.

-6- ■EPDT－169a■

8.3. Disassembly Procedure

(1) After confirming that the remaining pressure is relieved from the strainer, remove the

bolts⑩from the cover②, and remove the cover②from the body①. Extract the screen③

from the body①and clean it with compressed air or cleanser.

Caution

(2) Don’t loose bolts④and lock Nut⑤, because they are adjusted height that the cover②

clamp the screen③.

※In case clamping the screen don’t have enough force, gap between body①and screen③

may affect the original performance, or Screen may be deformed or damaged.

※In case clamping the screen is too force, Screen may be deformed or damaged.

8.4. Assembly Procedure

(1) After cleaning down the sealing surface of body①and cover②, Install the clean screen③

in body①. Apply the silicon grease to the O-ring⑨, after confirm whether there are any

flaw on the O-ring⑨. Install the cover②.

Caution

(2) When re-assembling, fix the relative parts properly.

※Parts may be deformed or damaged.

(3) Tighten the bolts evenly on each bolt in turn of diagonal position.

※The fluid may leak from strainer. If the fluid is of high temperature, the leakage may

cause being scalded.

(4) Cleaning down the sealing surface of body①and cover②

※The fluid may leak from strainer. If the fluid is of high temperature, the leakage may

cause being scalded.

(5) Apply the silicon grease to the O-ring.

※O-ring may be deformed or damaged.

(6) In case the O-ring is damaged, replaces the O-ring to new one and applies the silicon

grease to the O-ring.

※IF the O-ring is damaged, the fluid may leak from strainer. If the fluid is of high

temperature, the leakage may cause being scalded.

8.5. Precautions during change the screen

Caution

(1)Indicates that changing the screen, adjust height of bolts④that the cover②clamp the

screen③.and tight the bolts④and lock Nut⑤.(Refer to “figure-6 Adjusting height of

bolts”.)

※In case clamping the screen don’t have enough force, gap between body①and screen③

may affect the original performance, or Screen may be deformed or damaged.

※In case clamping the screen is too force, Screen may be deformed or damaged.

Figure-6.Adjusting height of bolts

-7- ■EPDT－169a■

8.6. Exploded drawing

※Part names shown in boxes are consumable items.

Figure-7.Exploded drawing

PDD-046f

Warranty Information

1. Limited warranty

This product has been manufactured using highly-advanced techniques and subjected to

strict quality control. Please be sure to use the product in accordance with instructions on

the manual and the label attached to it.

Yoshitake warrants the product to be free from any defects in material and workmanship

under normal usage for a period of one year from the date of receipt by the original user, but

no longer than 24 months from the date of shipment from Yoshitake’s factory.

2. Parts supply after product discontinuation

This product may be subject to discontinuation or change for improvement without any prior

notice. After the discontinuation of the product, Yoshitake supplies the repair parts for 5

years otherwise individually agreed.

3. This warranty does not cover the damage due to any of below:

(1) Valve seat leakage or malfunction caused by foreign substances inside piping.

(2) Improper handling or misuse.

(3) Improper supply conditions such as abnormal water pressure/quality.

(4) Water scale or freezing.

(5) Trouble with power/air supply.

(6) Any alteration made by other than Yoshitake.

(7) Use under severe conditions deviating from the design specifications

(

e.g. in case of corrosion due to outdoor use).

(8) Fire, flood, earthquake, thunder and other natural disasters.

(9) Consumable parts such as O-ring, gasket, diaphragm and etc.

Yoshitake is not liable for any damage or loss caused by malfunction or defect of the product.

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