MIYAWAKI Series GH Users Manual
Contents
1. CAUTION 1 Check the flow direction marked on the side of the body and match with the arrow on the body 2 This trap is for a horizontal installation Be sure to create a slight downhill gradient so that the condensate will flow in and out smoothly 3 The product should be installed for easy maintenance check 4 Open the isolation valve on the primary line slowly and make sure the product works normally 5 The outlet line should be piped from the steam trap as shown below Recovery Main Branch Line Condensate Tank Model G Check Valve 6 11 6 N When taking apart the trap from the line close the both primary and secondary stop valve and cool down the trap itself first to avoid the danger of steam and condensate blowout WARNING The performance of steam traps deteriorates over time due to wear corrosion or dirt accumlating around the valve seat To keep steam systems and equipment working well periodic maintenance of the steam traps is essential Tools for testing steam traps In order to test steam traps ultrasonic testers sound detectors and thermometers have been used for years These tools are relatively easy to use and are useful for making rough estimates of the level of deterioration in a defective trap However to determine deterioration levels and steam losses quantitatively special tools are required for testing steam traps Dr Trap and Dr Trap Jr are testing equip2. Valve Unit 15 Gasket 19 Bolt Nut 18 Connection Flange 24 Connection Flange 20 Bolt 9 11 7 TROUBLESHOOTING Steam leaks or blows through Steam leaks from the body Insufficient condensate discharged or no condensate discharged Possible Causes Stuck valve or dirt accumulated around Valve or Valve Seat Stuck valve or dirt accumulated around Guide Wing or Valve Seat Damage wear or corrosion of Valve Unit Bolt 14 is loose Air Vent is damaged Air Vent is loose Gasket 15 is damaged Gasket 54 is damaged Improper installation Bolt 19 or Nut 19 is loose Gasket 16 is damaged Plug 22 is loose Model GH2 GH4 GH6 Bolt Nut 33 is loose Model GH8 Gasket 31 is damaged Bolt 20 is loose Model GH4 GH6 GH8 Gasket 17 is damaged Model GH4 GH6 GH8 Plug 29 is loose Dirt has built up on or around the Valve or Valve Seat Float is damaged Screen is clogged Air Vent is damaged Inlet valve is closed Insufficient condensate capacity See the torque table in Chapter 6 10 11 Clean the Valve Unit a larger capacity 8 LIMITED WARRANTY Any trap that fails in normal operating conditions will be repaired free of charge WARRANTY TERM This warranty term shall be for the first 12 months of ownership starting from the date of delivery to you WHAT THIS WARRANTY DOES NOT COVER 1 Damage caused by carel
3. replace it 6 Take off the Plug 22 model GH8 take off the Nut 33 and dismantle the Screen Cover 34 take out Screen 21 and clean it When reassembling always replace the Gasket 15 16 31 to new ones Gaskets are fragile so please handle with care CAUTION Bolt 14 19 33 should be tightened evenly 7 11 The clamp torque of the screws will be as per the following chart Torque table Model No Parts Size Clamp Torque 2 Pug aemm etnon 120 Nam 1290 gen Mo st 20 ot ommo nem 80 kar om zz hug 5a mm 21G nem 180 Nm 1 500 zs ir vont 32 mm 1 26 inon 130 Nam 1300 Wa omose ut N 24 mm 0 94 inch 120 N m 1 200 kgf cm 60 mm 2 36 inch 150 N m 1 500 kgf cm N ma emesen ee Bolt Nut 19 mm 0 75 inch 60N m 600 kgf cm 32 mm 1 26 inch 130 N m 1 300 kgf cm 8 11 37 Name Plate Assembly Drawing Of Model GH2 PA 1 Body 16 Gasket 3 Float 23 Air Vent 50 Plate 19 Bolt 21 Screen 31 Gasket 22 Plug 14 Bolt Valve Unit 15 Gasket 2 Cover Assembly Drawing Of Model GH4 GH6 GH8 Inlet Connection of Model GH8 2 Screen Cover LL 37 Name Plate 31 Gasket 21 Screen 16 Gasket 3 Float 33 Bolt Nut 23 Air Vent 18 Connection Flange 50 Plate 2 Cover 21 Screen 31 Gaske
4. MI YAWAKI BALL FLOAT STEAM TRAP GH2 GH4 GH6 GH8 USER S MANUAL 1 SYMBOL USED 2 SAFETY INSTRUCTIONS 3 SPECIFICATIONS 4 NAMES OF COMPONENTS AND PARTS 5 INSTALLATION 6 MAINTENANCE 7 TROUBLESHOOTING 8 LIMITED WARRANTY Be sure to read this manual to learn the safe and proper operation of this product Store this manual carefully after use M MIYAWAKI INC 1 11 To the owner Ball Float Steam Trap Model GH series is designed for large capacities with built in bi metal air vent and double ported balance valve In order to get maximum benefit from this product be sure to read this manual before installing it Maintenance If this product functions or looks abnormal take the necessary steps to correct it If it seemingly cannot be corrected ask your MIYAWAKI dealer what to do and give him the following information 1 Model 2 Serial Sy No 3 Detailed description of the abnormal condition Supply Period for Maintenance Parts We will continue to supply maintenance parts for this product for 5 years after we discontinue production of the primary product The supply of maintenance parts will in principle terminate at the end of the supply period stated above However even after the supply period has run out it is possible to consult with us about the delivery time and prices for parts that are still in stock 1 SYMBOLS USED O SYMBOL INDICATION 1 Safety alert Symbol This is the safety al
5. earance for maintaining it When replacing parts make sure the replacement parts are supplied by MIYAWAKI 3 SPECIFICATIONS GH2 GH4 GH6 GH8 CONNECTION BODY mese ra DIMENSIONS mm inch WEIGHT pee pema mem eon Sm D e 00 E 7 9 310 235 83 65 24 Bad 122 94 26 528 Ea Cast Steel 0 01 2 0 400 5i 20 105 90 43 SCPH2 145 290 752 2 12 8 41 3 5 946 270 415 345 D 10 6 16 6 13 6 dd 6 350 590 470 174 jo 162 13 8 23 6 18 5 6 9 356 4 lt Dismounting Space D T Dismounting Space Model Dismounting Space 3 11 Body Cover Float Lever Valve Seat Valve Holder Lever Nut 9 Nut 10 Connector ONO aE BONS Body Cover Float Lever Valve Seat Valve Holder Lever Nut Nut 10 Connector 1 2 3 4 5 6 7 8 o 11 12 13 14 15 16 18 19 21 22 11 12 13 14 15 16 17 18 19 20 Nut Guide Wing Pin Bolt Gasket Gasket Connec Flange Bolt Screen Plug Nut Guide Wing Pin Bolt Gasket Gasket Gasket Connec Flange Bolt Nut Bolt GH2 Air Vent Connec Flange Plug Gasket Buffle Plate Nut Spring Washer Name Plate Rivet Pin GH4 21 22 23 24 29 31 32 35 37 38 4 11 Screen Plug Air Vent Connec Flange Plu
6. ert symbol When this symbol is on the machine or in this manual N be alert to the possibility of personal injury and carefully read the messages that follow 2 Signal Words The signal words WARNING CAUTION are used with the safety alert symbol N WARNING denotes an extreme hazard which will likely result in death or serious personal injury if proper precautions are not taken WARNING N CAUTION denotes general precautions that may result in injury or damage to objects if proper precautions are not taken CAUTION 2 11 2 SAFETY INSTRUCTIONS Observe the following instructions to insure safe operation If you don t you may be seriously injured and the product may be damaged Be sure not to use this product at a pressure higher than the specified maximum operating pressure PMO or at a temperature higher than the specified maximum operating temperature TMO Pay very careful attention when working in hazardous environments such as There is a risk of explosion and the possibility of dangerous gasses leaking Always check whether the pipeline contains flammable high pressure or high temperature materials before starting to work Make sure that isolation valves are installed on both the upstream and downstream lines Before installing the product open the isolation valves and the bypass valve if one exists to blow out any debris or dust inside the pipeline When installing the product be sure to leave cl
7. ess use or ignoring the warnings and cautions given in this manual 2 Damage caused by severe shock or an impact which would not be experienced in normal operation 3 Damage caused by unauthorized modifications or repairs 4 Damage caused by fire natural disasters or acts of God 5 Damage caused by inappropriate handling or installation in a way that violates the specifications 6 Damage caused by equipment apparatus or devices that are not provided by MIYAWAKI 7 Damage caused by chlorine or other materials that are corrosive to metals or hasten deterioration 8 Damage caused by a part such as a gasket that is severely deteriorated 9 Damage caused by accumulated dirt or debris on or around the seat WARRANTY SCOPE In any event the scope of the warranty is limited to compensation that does not exceed the purchase price of the product 11 11
8. g Gasket Buffle Plate Nut Name Plate Rivet NAME OF THE COMPONENTS AND PARTS 43 Shaft 44 Collar 45 Split Pin 47 Spring Pin 50 Plate O 0900906362568 620069 6202040909 006209 02 5 302 39 Pin 43 Shaft 44 Collar 45 Split Pin 47 Spring Pin 50 Plate Body Cover Float Lever Valve Seat Valve Holder Lever Nut 9 Nut ONOAOAR WD gt 10 Connector Body Cover Float Lever Valve Seat Valve Holder Lever Nut Nut OND m R ww s o 10 Connector 11 12 13 14 15 16 17 18 19 20 11 12 13 14 15 16 17 18 19 20 Nut Guide Wing Pin Bolt Gasket Gasket Gasket Connec Flange Bolt Nut Bolt Nut Guide Wing Pin Bolt Gasket Gasket Gasket Connec Flange Bolt Nut Bolt 21 23 24 29 31 32 33 34 35 37 5 11 Screen Plug Air Vent Connec Flange Plug Gasket Buffle Plate Nut Name Plate Rivet Screen Air Vent Connec Flange Plug Gasket Buffle Plate Bolt Nut Screen Cover Nut Name Plate 43 Shaft 44 Collar 45 Split Pin 47 Spring Pin 50 Plate 38 Rivet 43 Shaft 44 Collar 45 Split Pin 47 Spring Pin 50 Plate 5 INSTALLATION A Before installing the product open the isolation valves and the bypass valve if one exists to blow off any debris or dust inside the pipeline
9. ment that were developed specifically for diagnosing steam traps and analyzing survey results automatically Use these tools to avoid tiresome jobs on sites and save working time Working conditions of a steam trap Steam trap failures can be classified as either Leaking or Plugged The level of steam leaks is generally determined by the intensity of the ultrasonic vibration generated in the valve seat inside of a steam trap The plugged is diagnosed by measuring the surface temperature As the degree of plugging increases due to a buildup of dirt in the trap it will finally become completely plugged Then the surface temperature will drop to around 40 degrees centigrade or lower Repairs When a trap fails it is necessary to clean the internal parts and replace damaged parts Take the failed trap apart following the steps below 1 Remove the trap from the piping Take off the Bolt 19 model GH4 GH6 GH8 Nut 19 and dismantle the Body 1 all the inner parts are fixed to the Cover 2 2 Take off the Bolt 14 with a wrench The Valve Unit will be dimantled The Float 3 can also be dismantled with a wrench 3 Clean and inspect the Body 1 and the Valve Unit if not defected assemble in the opposite way of disassembling 4 If the Valve 6 and Valve Seat 5 are worn out or defected replace the whole Valve Unit 5 If the Float 3 is damaged loosen the Nut 35 of the Lever 4 and turn the Float 3 by hand and
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