Yoshitake REDMAN DD-2 Series Скачать руководство пользователя

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EPDT-251b

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MODEL DD-2 · DD-3 series

REDMAN

PRODUCT MANUAL

Thank you very much for purchasing our solenoid valve. Please read this instruction manual thoroughly

before using the product, so that you may do so correctly and safely. Please carefully store this manual in a
handy place. The following safety symbols are used in this manual.

Warning

This symbol indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.

Caution

This symbol indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury or may result in only property damage.

Table of Contents

1. Usage of the Product ·················································· 1

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

3. Specifications ···························································· 1

4. Dimensions and Weight ·············································· 3

5. Operation ································································· 3

6. Nominal Size Selection ·············································· 4

6.1 Nominal size selection chart ··································· 4

6.2 Calculation formula for Cv value ······························ 6

7. Installation ······························································ 6

7.1 Precaution for installation ······································· 6

7.2 Piping example ···················································· 8

7.3 Wiring method ····················································· 8

8. Operating Procedure ················································· 9

8.1 Precaution for operating procedure ·························· 9

8.2 Test working ······················································· 9

9. Maintenance ····························································· 9

9.1 Precaution for maintenance ·································· 10

9.2 Daily and periodic inspections ······························· 10

9.3 Troubleshooting ·················································· 11

9.4 Disassembly and reassembly ································ 12

Warranty Information

DIRECT ACTING
SOLENOID VALVE

Содержание REDMAN DD-2 Series

Страница 1: ... situation that if not avoided may result in minor or moderate injury or may result in only property damage Table of Contents 1 Usage of the Product 1 2 Features 1 3 Specifications 1 4 Dimensions and Weight 3 5 Operation 3 6 Nominal Size Selection 4 6 1 Nominal size selection chart 4 6 2 Calculation formula for Cv value 6 7 Installation 6 7 1 Precaution for installation 6 7 2 Piping example 8 7 3 ...

Страница 2: ...ing pressure 0 0 15 MPa 0 0 8 MPa 0 0 15 MPa 0 0 8 MPa Orifice mm 9 5 4 0 9 5 4 0 Cv value 1 7 0 55 1 7 0 55 Allowable valve seat leakage 50 mL min under standard conditions No leakage at the pressure gauge Max temperature 175 C 100 C 90 C Installation posture 1 Vertical or horizontal installation 1 Within 90 degrees from upward position of the coil Operation Nomally closed Material Body Stainless...

Страница 3: ...iping below size 50A of constant water level valve and selecting pilot type DP 200 N for the pilot piping above size 65A of constant water level valve Caution 1 Please collate the attached nameplate with the specifications of the ordered model If they are different stop use and contact us 2 Make sure to confirm the specifications of constant water level valve before use Constant water level valve ...

Страница 4: ...ning operation When the coil is supplied with power the plunger is pulled up and extends the spring upwardly opening the valve 2 Closing operation When the coil is not supplied with power the plunger drops down by its own empty weight and the spring load closing the valve Model ØD mm DD 2 9 5 DD 3 DD 2 8 4 0 DD 3 8 Example structural drawing DD 3 Plunger Coil Spring Ø ...

Страница 5: ...the flow rate V by Cv value for each model Example Model DD 3 Cv value 1 7 Inlet pressure P1 0 15 MPa Outlet pressure P2 0 05 MPa Pressure loss is calculated as P P1 P2 0 1 MPa Then find the flow rate V 14 L min as shown by the dashed lines in the above chart Next multiply V 14 L min by the Cv value of 1 7 Therefore 14 L min x 1 7 23 8 L min V Flow rate L min P Pressure loss MPa ...

Страница 6: ...v value for each model Example Model DD 2 8 Cv value 0 55 Fluid Steam Inlet pressure P1 0 8 MPa Outlet pressure P2 0 5 MPa Flow rate W is 92 kg h which is the intersection of P1 0 8 MPa and P2 0 5 MPa as shown by the dashed line Next multiply W 92 kg h by the Cv value of 0 55 Therefore 92 kg h x 0 55 50 6 kg h Q Flow rate L min P2 Outlet pressure MPa W Flow rate kg h P2 Outlet pressure MPa ...

Страница 7: ...zard harming a body or property by the malfunction of the product please install the safety device which operates interception opening warnings according to each facility 2 The product cannot be used as an emergency shutoff valve The product is not designed as a safety valve such as an emergency shutoff valve If the product is applied to a system that needs safety measures install other equipment ...

Страница 8: ...e and malfunction 11 When using the product under the conditions where the outlet pressure can accidentally become higher than the inlet pressure install a check valve at the outlet side to prevent backflow Failure to do so may cause the backflow even during the solenoid valve is closed 12 If the product is used in a steam line and negative pressure generates at its outlet side when it is closed i...

Страница 9: ...avoid unnecessarily pulling the lead wires or subjecting them to excessive load while wiring or use 3 Use electric wires which have a core of 0 75 mm2 or more 4 Use a fuse 3A to protect the electric circuit Use a circuit protector as follows if the product is used in a fuel supply system Rated voltage 100 V 0 5 A circuit protector Rated voltage 200 V 0 3 A circuit protector 5 When using a terminal...

Страница 10: ... working be sure to close the stop valves installed at both the inlet and outlet sides of the product and remove foreign substances and scale completely by flushing the bypass line 1 Before leading fluid into the product switch it on and off a few times and confirm the sound caused by the plunger when the coil turns on 2 Fully open the stop valve at the outlet side 3 With the product at open condi...

Страница 11: ...op valves and turn off the power before inspection 5 When any defect is found on the product during the daily periodic inspections be sure to contact a professional and follow its instructions 6 Be sure to replace the gasket with new one at the time of re assembling Failure to do so may result in external leakage 7 After disassembling and re assembling perform test working before starting operatio...

Страница 12: ...ed 1 Check the power supply 2 Plunger a ssy is stuck with foreign substances or get damaged 2 Disassemble the product and remove foreign substances Replace the parts with new ones if any damage is observed 3 Plunger a ssy is stuck with foreign substances in the piping 3 Disassemble the product and remove foreign substances Make sure that the sliding action is smooth 4 Inlet outlet of the product i...

Страница 13: ...o do so may result in injury or burns due to residual pressure Exploded drawing 1 Loosen Hexagon nut M14 and remove Tooth lock washer Plain washer Name plate and O ring Small and then dismount Coil 2 Remove Pipe with a spanner 32 mm width across flat 3 Remove Plunger 4 Reassemble the product in the reverse order of disassembling 5 Tighten Pipe with the torque of 50 N m and Hexagon nut with that of...

Страница 14: ...r 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 ...

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