USER`S MANUAL - Genel Makina
Contents
1. BRIE GokwBals L lt TEATRES For any questions about the product that you purchased or about the details in this user s manual please contact the following If you lose this user s manual or can no longer read it due to stains please make a request to the following Copyright 2009 MIYAWAKI INC All Rights Reserved This user s manual may not be reproduced or copied in whole or in part without the written consent of MIYAWAKI INC ff nzart SPO MCSt24 T532 0021 XBrhzE l P EHJII3E2 1 30 TEL 06 6302 5590 FAX 06 6305 4089 http japan miyawaki net e mail mcs miyawaki inc co jp INTERNATIONAL SALES DEPT 2 1 30 TAGAWAKITA YODOGAWA KU OSAKA 532 0021 JAPAN Tel 81 6 63025549 Fax 81 6 63025595 http Awww miyawaki net e mail export miyawaki inc co jp OM No G14 01 1012P2. 200 1 soo Cover nut 32 GH40 GH40D Torque wrench 6418 000600 GH40 model GH40D model 16 Valve unit 26 1 Body 21 Cover bolt 27 Plug 2 Cover 22 Screen 30 Bush Only for GH40D model which is 3 Float 23 Screen plug equipped with a diaphragm type air vent 15 Holder nut 24 Screen plug gasket 31 Bolt 16 Holder gasket 25 Airvent 32 Cover nut 20 Cover gasket 26 Plug 5 TROUBLESHOOTING Problem Possible cause Solution Steam leaks or blows through Foreign material such as scale or dirt is stuck between the valve the valve seat and the holder of the valve unit Disassemble the valve unit and remove the material The valve the valve seat and or the holder are damaged worn or corroded Replace the valve unit The threads on the valve seat or holder in the valve unit are loose Retighten the threads on the valve seat or holder in the valve unit The holder nut is loose Retighten the nut 1 The holder gasket is damaged Replace the holder gasket Foreign material such as scale or dirt stuck on the air vent Disassemble the air vent unit and remove the material The air vent is loose The seating surfaces on the valve or the valve seat in the air vent is damaged worn or corroded Retighten the air vent or the bush 2 Replace the air vent Wrong installation position Change the installation so that the top labe
3. the correct torque Refer to the torque table in Section 4 Maintenance to retighten the parts with 6 WARRANTY 6 1 Warranty period The warranty period shall last 12 months from the date of product delivery 6 2 Details of the warranty If the product stops working correctly within the warranty period we will repair or replace the product free of charge if the cause of the trouble is not one of the following items 1 2 The precautions described in this manual were not observed User s errors or mistakes such as an inappropriate installation or incorrect handling or an excessively large impact caused by dropping Problems caused by devices or equipment other than ours or a disallowed use environment When a repair or modification has been performed by anyone other than us 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 Extremely worn packing gaskets or other parts Attachment or accumulation of foreign objects in the pipe such as dust and scale Problems from fires natural disasters or other force majeure which is not our responsibility 6 3 Warranty limitation The remedy available under the warranty shall not exceed the sales price of the products delivered for any cause whatsoever e SEVLFORRRUCOMRMUABNAICOUTO 8 8 5 3 lt
4. DOUBLE PORTED BALANCE VALVE BALL FLOAT STEAM TRAP GH40 USER S MANUAL z AJOA A kj t Sf o e x O M MIYAWAKI INC SAFETY The MIYAWAKI GH40 is a cast steel ball float steam trap with an integrated bimetal automatic air vent GH40D Diaphragm type In order to get maximum benefit from this product be sure to read this manual before installing it The following warnings and cautions are shown at appropriate places in this manual Failure to observe this type of precaution may lead WARNING to serious injury or death Failure to follow this type of precaution can lead to CAUTION injury or damage to equipment and property Table of Contents 1 SPECIFICATIONS AND MARKINGS 1 CONSTRUCTION DETAILS INSTALLATION MAINTENANCE TROUBLESHOOTING WARRANTY DD COT a 0 KR OQ nm 1 SPECIFICATIONS AND MARKINGS A WARNING Be sure not to use this product at higher pressures than the specified maximum allowable pressure PMA or at temperatures higher than the specified maximum allowable temperature TMA The following items are displayed on the nameplate or the side of the product Check each item to avoid misuse of the product 1 Maximum allowable pressure PMA 4 0 MPa 580 psig 100 C 212 F 2 Maximum allowable temperature TMA 400 C 752 F 2 7 MPa 329 psig 3 Maximum operating pressure PMO GH40 2F GH40D 2F 0 2 MPa 29 psig GH40 6F G
5. H40D 6F 0 6 MPa 87 psig GH40 10F GH40D 10F 1 0 MPa 145 psig GH40 21F GH40D 21F 2 1 MPa 305 psig 4 Maximum operating temperature TMO GH40 400 C 752 F GH40D 220 C 428 F 5 Size 40mm 1 1 2 50mm 2 6 Serial number Showing the year and date of production 7 Flow direction Shown by an arrow 8 Body material Cast Steel SCPH2 Refer to the leaflet for details about dimensions and other specifications 2 CONSTRUCTION DETAILS GH40 model GH40D model 53 64 62 2 6 62 0 3 3 3 3 2 2 09 9 D 2 GJ 6 9 9 9 C 0 3 9 9 58 5 O 3 53 24 62 C 69 OD 3068 3 CO 2 09 9 D 1 Body 12 Pin 23 Screen plug 2 Cover 13 Pin 24 Screen plug gasket 3 Flost 14 Holder bolt 25 vent GH40 Bimetal type 58400 Diaphragm type 4 Lever 15 Holder nut 26 Plug 5 Holder 16 Holder gasket 27 Plug 6 Valve seat 17 Shaft 28 Name plate 7 Valve seat 18 Split pin 29 Rivet 8 Valve 19 U nut 30 Bush Only for GH40D model which is 9 Lever nut 20 Cover gasket equipped with a diaphragm type air vent 10 Bolt 21 Cover bolt 31 Bolt 11 Spring washer 22 Screen 32 Cover nut 33 Collar 3 INSTALLATION A WARNING Pay very careful attention when working in hazardous environments There is a risk of explosion and the possibility of dangerous gases leaking Always check whether the pipeline contains flammable high pressure or high
6. he screen pointing into the place where it fits into the body 4 3 5 Reassembling the air vent 1 2 Secure the air vent 25 on the cover 2 Only for GH40 model Secure the bush 30 in the air vent 25 on the cover 2 Only for GH40D model 4 3 6 Reassembling the trap Connect the float 3 to the valve unit Attach the holder gasket 16 to the valve unit holder 5 Secure the valve unit to the cover 2 In this case make sure that the holder gasket is fitted in the right place Tighten it with the four holder nuts 15 Make sure to tighten the nuts in a crosswise pattern to avoid uneven tightening Attach the cover gasket 20 to the cover 2 and attach them to the body 1 When reassembling the trap attach the body carefully so that the internal unit is not damaged noting the convex area created by the bolt hole inside the body Make sure that the gasket is installed in the right place Tighten the body 1 with the 4 cover bolts 21 and cover nuts 32 Finally tighten the bolts in a crosswise pattern to avoid uneven tightening The torque for each part is shown in the following table Parts Models Tools Across the flats Torque Cover bolt 21 GH40 GH40D Torque wrench ioe He 5 Holder nut 15 GH40 GH40D Torque wrench ea EUM Air vent 25 GH40 Spanner Wrench rou 1 aoa Screen plug 23 GH40 GH40D Torque wrench ores NIU Bush 30 GH40D Spanner Wrench
7. l or the name plate is on the top side of the body Wrong installation direction Make sure the arrow on the main body matches the flow direction of the fluid From between the body and body cover Steam leaks from the body The cover bolts or cover nuts are loose Retighten them 3 Damage erosion or deterioration of the cover gasket Replace the cover gasket The gasket sealing surface on the body or bottom cover is damaged Replace the body with a new one or replace the bottom cover From between the body and plug The plug is loose The gasket is damaged Retighten the plug 4 Replace the gasket The gasket sealing surface on the body or plug is damaged Replace the body with a new one or replace the plug Insufficient condensate discharged or no condensate discharged The screen is clogged Clean the screen Foreign material such as a scale or dirt is stuck in the valve seat Clean the valve seat The float is damaged Replace the float The air vent is damaged Replace the air vent Wrong installation position The steam pressure was over the specified maximum operating pressure Correct the installation position Lower the pressure or replace the trap with one that has a higher maximum operating pressure Insufficient condensate capacity Replace the trap with a larger capacity trap 1 2 3 and 4
8. nce of steam traps deteriorates gradually over time due to wear corrosion or dirt accumulating around the valve seat To keep steam control systems and equipment working well periodic maintenance of steam traps is essential 4 1 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 of a trap However to determine deterioration levels and steam losses quantitatively special tools for testing steam traps are required Dr Trap and Dr Trap Jr are testing equipment that was developed specifically for diagnosing steam traps and analyzing survey results automatically Use these tools to avoid tiresome jobs on site and save working time 4 2 Working Conditions of a Steam Trap Steam trap failures can be classified as either Leaking or Plugged The level of a steam leak is generally determined by the intensity of the ultrasonic vibration generated in the valve seat inside of a steam trap Plugging is diagnosed by measuring the surface temperature As plugging progresses due to a buildup of dirt in the trap it finally becomes completely plugged Then the surface temperature will drop to around 40 degrees centigrade or lower 4 3 Repairs When a trap fails it is necessary to clean the internal parts and to replace damaged parts Take the failed t
9. rap apart following the steps below 4 3 1 Disassembling the trap 1 Loosen the 4 cover bolts 21 and 2 cover nuts 32 and remove the body 1 2 The bolt hole makes a convex area marked two positions Arrow and dashed line inside the body Therefore you must remove the body 1 carefully so that the internal unit is not damaged 3 Lower or raise the body 1 a little and then remove it so that the float 3 does not contact the convex area surrounding the bolt hole inside the body 1 4 The internal unit is secured to the cover 2 Remove the four nuts 15 and then remove the valve unit connected to the float 3 5 Secure the lever 4 with a wrench or similar device and rotate the float 3 by hand to remove it 4 3 2 Disassembling the air vent 1 Remove the body 1 the same as described in the procedure for Disassembling the trap above 4 3 3 Disassembling the screen 1 Remove the screen plug 23 2 Remove the screen 22 from the cover 2 Take the appropriate measures as described in Section 6 Troubleshooting Reassemble the parts as follows reversing the procedure used to disassemble them Refer to the torque table to learn the correct torque for each part 4 3 4 Reassembling the screen 1 2 Attach the screen 22 to the screen plug 23 Attach the screen plug gasket 24 and fit the screen plug 23 into the cover 2 and tighten it Now be careful to store the tip of t
10. temperature materials before starting to work Make sure that isolation valves are installed on both the upstream and downstream lines A CAUTION Before installing the product open both isolation valves and the bypass valve if one exists to blow out any debris or dirt inside the pipeline After blowing out the line before starting to work close the isolation valves and allow time for the temperature to drop to a safe working temperature When installing the product be sure to leave clearance for maintaining it 1 Remove the dustproof seals covering both connections 2 Check the flow direction indicated on the side of the body 3 When installing a GH40 install it so that the flow from the upstream line to the downstream line is horizontal and the top label or the name plate is on the top side of the body Install the GH40 at the end of a pipe that is angling down so that condensate flows into the steam trap easily e Open the isolation valve on the upstream line slowly and make sure the product works normally Clearance for maintenance More than 100 mm Top label Name plate Flow direction line line gt AT i Q Downstream O i Oo Clearance for ji noe More za i an maintenance Installation More than profile position 150 mm 4 MAINTENANCE A CAUTION When replacing parts make sure the replacement parts are supplied by Miyawaki The performa
Download Pdf Manuals
Related Search