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EPDT-213b

 

 

OB-30, OB-30U

 

OB-31, OB-31U

 

TEMPERATURE REGULATOR

 

 

INSTRUCTION MANUAL

 

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Thank you very much for choosing the Yoshitake’s product. To ensure the correct and safe use of the product, 
please read this manual before use. This manual shall be kept with care for future references.

 

The symbols used in this manual have the following meanings.

 

 

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

2. Dimensions and Weights ············································· 2 

3. Operation ································································· 3-4 

4. Nominal Size Selection ··············································· 5-6 

5. Installation 

5.1 Precaution for installation ······································· 7 

5.2 Installation of body ··············································· 7 

5.3 Installation of thermal bulb ····································· 7 

5.4 Assembly of body and sensor ································· 8 

5.5 Piping example ···················································· 8 

6. Operating Procedure   

6.1 Precaution for operation ········································ 9 

6.2 Adjustment ························································· 9 

7. Maintenance   

7.1 Troubleshooting ·················································· 10 

7.2 Precaution for inspection ······································ 11 

Warranty Information 

 
 

 
 
 
 

MODEL

 

Содержание OB-30

Страница 1: ...d 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 Conten...

Страница 2: ...Pa Material Thermal bulb Copper pipe Nickel chrome plated Capillary tube Copper Flexible tube Stainless steel Standard capillary length 2 m Connection JIS R1 2 screwed Available with thermal well stai...

Страница 3: ...Nominal Size d L Weight kg Capillary length Weight 15A Rc 1 2 75 2 1 2 m 0 6 kg 20A Rc 3 4 80 2 2 25A Rc 1 90 2 4 OB 30U OB 31U OB 30U OB 31U Body mm Sensor Nominal Size d L Weight kg Capillary lengt...

Страница 4: ...lve When the temperature of the bulb lowers the downward force applied to the spindle by the spring 11 opens the valve The set temperature can be adjusted by turning the handle 12 to change the load o...

Страница 5: ...orce to the spindle 7 to open the valve When the temperature of the bulb lowers the downward force applied to the spindle by the spring 11 closes the valve The set temperature can be adjusted by turni...

Страница 6: ...P2 and steam flow rate are 0 2 MPa 0 15 MPa and 20 kg h respectively first find intersection point a of the inlet pressure of 0 2 MPa and the outlet pressure of 0 15 MPa Trace down vertically from th...

Страница 7: ...re and flow rate are 0 3 MPa 0 15 MPa and 1 m3 h respectively first find intersection point a of the differential pressure P of 0 15 MPa 0 3 MPa 0 15 MPa before and after the valve and the flow rate o...

Страница 8: ...Failure to follow this notice hampers correct temperature regulation 11 Do not apply excessive load torque or vibration to the product Failure to follow this notice may result in malfunction or a dra...

Страница 9: ...lve Capillary tube 5 4 Assembly of body and sensor Place the bellows follower 13 which is packaged with the body into the bellows 14 with its flat surface facing downward and then screw it into the lo...

Страница 10: ...r hammer and can heavily damage the main parts of the product Be sure to follow the procedure below 1 Close the stop valves at the inlet and outlet sides of the product Open the bypass stop valve and...

Страница 11: ...t us to retighten the gasket or disassemble the product to replace the part 2 Balance bellows 6 is damaged 2 Please contact us to disassemble the product and replace the part OB 31 OB 31U Trouble Caus...

Страница 12: ...hock to the thermal bulb Warning Inspection must be done by experienced professional or valve manufacturer Completely discharge the pressure inside of the product piping and equipment prior to disasse...

Страница 13: ...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 d...

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