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Related Manuals for MIYAWAKI TB7N
Summary of Contents for MIYAWAKI TB7N
- Page 1 TEMPERATURE CONTROL STEAM TRAP USER'S MANUAL...
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Page 2: Table Of Contents
SAFETY GUIDE The model TB7N is a bimetal temperature control steam trap that has superior durability and essentially doesn't allow steam to leak. In order to get maximum benefit from this product, be sure to read this manual before installing it. -
Page 3: Specifications And Markings
10) Model: Showing the product model name Some pictures and illustrations in this manual are examples of TB7N models. For more details regarding dimensions and other specifications, please refer to the catalog. The model TB7N fully complies with the requirements of the European Pressure Equipment Directive 2014/68/EU. -
Page 4: Construction Details
CONSTRUCTION DETAILS (12) (11) (15) (16) (13) (10) (14) (25) (17) (18) Body Washer 15. Cap Cover E-Ring 16. Cap Gasket Valve Seat 10. Shaft 17. Screen Valve 11. Adjust Bolt 18. Seat Gasket Spring 12. Adjust Nut 25. O-Ring Holder 13. -
Page 5: Installation
2) Check the flow direction indicated on the body. 3) The TB7N can be used for both horizontal and vertical lines. However, be sure not to install it upside-down in a horizontal line, as it will cause the trap to malfunction. -
Page 6: Setting The Temperature
SETTING THE TEMPERATURE WARNING Only set the temperature when the body temperature reached room temperature, before any steam is flowing. Be sure not to set the temperature while the steam is in operation. Set temperature The set temperature is the temperature at which condensate will be discharged from the temperature control steam trap. - Page 7 Precautions for setting the temperature Steam trace Basically, the set temperature should be the temperature used to control the objects being heated. Steam main lines Basically, use a temperature 20 ºC to 30 ºC lower than the saturated temperature. Other equipment Basically, use the factory default setting.
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Page 8: Stroke Chart
STROKE CHART Operating Pressure (psig) Operating Pressure (MPa) -
Page 9: Operation
OPERATION CAUTION Before starting operation, open the bypass valve or blow valve completely and blow off the scale in the piping. 6.1 Operation procedure 1) After blowing off the scale from the piping, close the bypass valve or blow valve. 2) Open the stop valve on the trap outlet side. -
Page 10: Maintenance
CAUTION When replacing parts, make sure the replacement parts are supplied by MIYAWAKI. The performance of steam traps deteriorates gradually over time due to wear, corrosion or dirt accumulating around the valve and the valve seat. Please conduct periodic diagnosis of traps in order to keep steam control systems and equipment working well. - Page 11 Repairs When a trap fails, it is necessary to clean the internal parts and to replace damaged parts. Take the failed trap apart following the steps below. 7.2.1 Disassembling the trap 1) Loosen the cover (2), and remove the adjustment unit including the cap (15), the adjust bolt (11), the adjust nut (12), the O-ring (13), and the cap gasket (16).
- Page 12 (15) Body (12) Cover (16) Valve Seat Valve Spring Holder Bimetal (14) Washer E-Ring (11) Shaft Adjust Bolt (13) Adjust Nut O-Ring (17) Cover Gasket Cap Gasket Bimetal Unit： Screen (7),(8),(9),(10),(25) Seat Gasket O-Ring (18)
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Page 13: Scale Removal Operation (Type Tb-Sr Only)
*Note: When a malfunction is caused by other factors, normal operation may not be restored by this operation. In such cases, please contact the nearest Miyawaki office. - Page 14 Part No. Part name normal operation of the unit has been restored. Spindle 7) If you have any questions, please contact Gland nut MIYAWAKI, our local authorized agent, or the Handle company where you purchased the product. Hexagon socket screw 8.3 Maintenance...
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Page 15: Troubleshooting
TROUBLESHOOTING Problem Possible cause Solution Steam leaks or blows Dirt is stuck around the valve Clean the valve (4) and the through. (4) or valve seat (3). valve seat (3). The valve seat (3) is loose. Tighten the valve seat (3). *1 Damage, erosion or corrosion Replace the valve (4) and the of the valve (4) or valve seat... -
Page 16: Warranty
Problems caused by devices or equipment other than MIYAWAKI’s, or a disallowed use environment When a repair or modification has been performed by anyone other than MIYAWAKI or people who are authorized to make such repairs Intrusion of salt or other substances that promote significant rust or corrosion or problems from fluids that contain the same substances Consumable parts such as Packing, Gasket, O-ring, Diaphragm, etc. -
Page 17: Serial Number (S. No.) Designation
1 7 1 1 → Jan.1, 2017 2 9 X M → Oct. 21, 2029 ●For 9-digit display S.No. □□□□□□□□□ MIYAWAKI identification number Represents the month. Represents the year. (last two digits of the year according to the Western calendar) Example of serial number designation 1 7 1 1 2 C 0 2 0 →... -
Page 18: Guidance For Reading Special Product Name
12 GUIDANCE FOR READING SPECIAL PRODUCT NAME 〇〇〇-○○-□ Special symbol: The symbol applies only to special products (Please refer to table 1 for details) Model symbol: Product model number Table 1 Symbol description Suffix Special contents Trap for high-pressure gas installed property (only for Gas Trap) Blow valve attached Change of gasket Special face to face dimension... - Page 19 Some special specifications of the product you have, may found to be different from the ones in the user's manual. If you have any question, please contact MIYAWAKI, our local authorized agent, or the company where you purchased the product.
- Page 20 MIYAWAKI GmbH Birnbaumsmühle 65, 15234 Frankfurt (Oder), Germany Tel: +49-335-4007-0097 www.miyawaki.de e-mail: info@miyawaki.de China Importer and Authorized representative: MIYAWAKI WEST Co., Ltd. Room 1705, No.1, Building No.311, Yanxin Road, Huishan Economic Development Zone, Wuxi, Jiangsu, China Tel: +86-510-8359-5125 www.miyawaki-inc.com.cn e-mail: mywkwest@miyawaki-inc.com.cn...
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