Miura MW-150C Replacement Procedure
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Miura MW-150C Replacement Procedure

Miura MW-150C Replacement Procedure

System integrated water softener, resin replacement procedure
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RESIN REPLACEMENT PROCEDURE
System Integrated Water Softener
MW-150C
MW-250C
MW-400C
MW-600C (Korea Product) MW-150U
MW-1000C
(China Product)
This document was formulated in Japan. Comply with the
regulations and standards of the country of use regarding installation
and usage.
The specifications of products and components may vary with
country of use and the site situation.
INFORMATION IN THIS MANUAL MAY BE CHANGED WITHOUT
NOTICE.
MW-65H
MW-100H
MW-150H
MIURA CO., LTD.
Manual Code No.
MW-35U
MW-65U
MW-100U
MW-250U
MW-400U
MW-600U
MW-1000U
(North America
Product)
S827-088-4010

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Summary of Contents for Miura MW-150C

  • Page 1 The specifications of products and components may vary with country of use and the site situation. INFORMATION IN THIS MANUAL MAY BE CHANGED WITHOUT NOTICE. MIURA CO., LTD. Manual Code No. S827-088-4010...

  • Page 2: Table Of Contents

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 ○This material explains the exchange procedure of ion exchange resin of system water softener MW type (hereinafter referred to as this machine). When doing the resin replacement work of this machine, please carry out the work correctly based on this material. - Table of Contents - Required parts ......................

  • Page 3: Required Parts

    Note： When replacing the resin for both unit 1 and unit 2, the amount required is double the amount shown in the table below. Table1. Amount of resin and gravel required for per unit(per resin tank)【CHINA】 Model MW-150C MW-250C MW-400C MW-600C...

  • Page 4: Tools And Protective Equipment

    【Connection part of bypass valve and control valve】 ・O-ring D=23.5mm W=2.5mm(Material：NBR) 【Connection part of resin tank and tank adaptor】 ・O-ring P105(Material：NBR) MW-65H～150H 【Connection part of tank adaptor and control valve】 MW-150C～400C ・O-ring AS568-349(Material：NBR) MW-100U～400U ・O-ring P65(Material：NBR) ・Backup ring for P65 【Connection part of resin tank】...

  • Page 5: Operational Procedure

    Work reference page (High hardness area) MW-35U Small Model 3-1 Replace the resin of the MW-65U small MW MW-100U MW-65H Middle MW-150C/U MW-100H 3-2 Replace the resin of the Model MW-250C/U MW-150H middle MW MW-400C/U MW-600C/U Large Model 3-3 Replace the resin of the...

  • Page 6: Resin Replacement For Small Mw

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 3-1 Resin replacement for small MW This section provides instructions on the resin replacement for a small MW. 3-1-1 Removal of control valve (1) In the maintenance manual regeneration mode, set the unit on which the replacement is performed to the backwash process in order to release the water pressure inside the resin tank as well as to perform air bleeding and discharge of colored water after the resin replacement.
  • Page 7 MIURA_CONFIDENTIAL Document No.: S827-088-4010 (6) Disconnect the tubing and wiring of the unit on which the replacement is performed. ◆Tube piping Brine line･･･ Tube connecting the brine tank and the main unit Tube connecting the unit 1 and unit 2 control valves Ejector line･･･...

  • Page 8: Drawing Out Resin And Gravel

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 (7) Remove the control valve and the collecting pipe of the unit on which the replacement is performed. Note: If the control valve section has not been removed since the manufacture, shipment, or installation, mark the valve body and the resin tank before removing the valve.
  • Page 9 Hose band x 2 MW-35U/65U Ejector line tube Hose (Open the end to (MW body) the atmosphere) φ12(refer to figure 15,16.P12) MW-65H～150H MW-150C MW-100U/150U φ16(refer to figure 15,16.P12) MW-250C/400C Resin exchange MW-250U/400U adapter Conversion tube fitting[φ12 - φ16] (field arrangment)

  • Page 10: Check Collecting Pipe,Resin Tank,O-Ring

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 3-1-3 Check Collecting pipe,Resin tank,O-ring. Check collecting pipe and resin and O-ring. Plastic Collecting pipe • Check that the pipe is not deformed. Mesh • Check that there is no cracking or deformation in the mesh or slit of the distributor and there is no peeling off of the net from the plastic part.

  • Page 11: Reassembly Of Equipment

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 • Pay attention during filling so that the collecting pipe is positioned in the center of the opening of the resin tank.(A tilt of the pipe toward one side makes the installation of the control valve and the tank adapter difficult.) •...

  • Page 12: Procedures After Replacement

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 (6) Connect the control valve with the resin tank. Pay attention to the tilt and install the control valve using the marking position as a reference. Note • Do not use sealing tape for the screw section. •...

  • Page 13: Resin Replacement On The Other Unit And Procedures After Replacement

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 (4) In the maintenance manual regeneration mode, move stepwise the unit on which the resin replacement has been performed to the fast rinse process. Since the unit goes through the brine introduction process during the stepping, brine may be supplied to the resin tank. Therefore, perform the fast rinse process for a specified time.

  • Page 14: Resin Replacement For Middle Mw

    No.1 Inlet valve No.1 Outlet valve No.2 Inlet valve No.2 Outlet valve No.1 Bypass valve No.2 Bypass valve Figure 15. Valve locations (MW-150C to 400C, 100U to 400U) ◆KOREA No.1 Outlet valve No.2 Outlet valve No.1 Inlet valve No.2 Inlet valve Ejector line No.2 unit...
  • Page 15 MIURA_CONFIDENTIAL Document No.: S827-088-4010 (4) Disconnect the ports and the regeneration drain piping of the unit on which the replacement is performed. Ports: union sections. Regeneration drain piping: union section. Some water will come out. Catch it with a bucket, etc. Ports union Ports union Drain piping union...

  • Page 16: Drawing Out Resin And Gravel

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 (6) Remove the control valve and the collecting pipe of the unit on which the replacement is performed. Note: Use the tank adapter spanner to remove the tank adapter. (Breakage prevention) Tank adaptor Tank adaptor spanner Figure20.

  • Page 17: Checking The Collecting Pipe, Resin Tank, And O-Rings

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 3-2-3 Checking the collecting pipe, resin tank, and O-rings Check the collecting pipe, resin tank, O-ring. Plastic Collecting pipe • Check that the pipe is not deformed. Mesh • Check that there is no cracking or deformation in the mesh or slit of the distributor and there is no peeling off of the net from the plastic part.

  • Page 18: Feed In Gravel And Resin

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 Cover. 3-2-4 Feed in gravel and resin. (1) Insert the collecting pipe assembly into the resin tank. Insert a new collecting pipe assembly instead of the removed one. Cover the collecting pipe with gummed tape, etc. so that the resin or gravel does not enter the pipe.

  • Page 19: Reassembly Of Equipment

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 3-2-5 Reassembly of equipment (1) If insertion of tank adaptor is difficult, fill the resin tank with water up to the top of resin later. (2) Install the tank adapter assembly. Note:Before proceeding, read the precautionary items in Figure. 22 first. Note: Install a new tank adapter assembly instead of the removed one.

  • Page 20: Procedures After Replacement

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 3-2-6 Procedures after replacement (1) Return the replaced unit from the bypass state to the water service state. Since the control valve is set to the position for the backwash process, the valve operations start backwash. Operate the valves of the unit on which the replacement was performed as follows: (Refered to Figure 2,3 for the valve position) ・Inlet outlet valve：...

  • Page 21: Resin Replacement On The Other Unit And Procedures After Replacement

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 3-2-7 Resin replacement on the other unit and procedures after replacement (1) Follow the same procedures to perform the resin replacement on the other unit. Note:Refer to “3-2-1 Removal of control valve” to “3-2-6 Procedures after replacement”. (2) Turn OFF DIP switch 1-1 on the control panel.

  • Page 22: Resin Replacement For Large Mw

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 3-3 Resin replacement for large MW This section provides instructions on the resin replacement for a large MW. 3-3-1 Stopping the water flow in the equipment (1) In the maintenance manual regeneration mode, set the unit on which the replacement is performed to the backwash process in order to release the water pressure inside the resin tank as well as to perform air bleeding and discharge of colored water after the resin replacement.

  • Page 23: Opening Of The Resin Tank

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 3-3-2 Opening of the resin tank (1) Open the drain valve in the lower part of the resin tank to release the residual pressure. Drain valve Figure 28. Position of drain valve (2) Remove the union (25A) in the upper part of the resin tank. Remove the union and supply the air into the resin tank.

  • Page 24: Checking Resin Tank And O-Rings

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 (4) Remove the resin tank flange. Remove the 12 hexagon head bolts. The bolt directly under the flange cannot be removed in this state. Slightly rotate the flange elbow in the counterclockwise direction to remove the nut. The flange elbow Slightly rotate the flange elbow.

  • Page 25: Drawing Out Resin And Gravel

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 3-3-4 Drawing out resin and gravel (1) Remove the resin and gravel from the resin tank. <Removal method> The following methods are available. Method 1 is recommended for a large amount of resin. 1. Use vacume ・By external contractor ・Commercial vacuum cleaner (Strong things that water and sand can aspirate)

  • Page 26: Reassembly Of Equipment

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 (2) Fill the resin tank with a specified amount of resin using a funnel, etc. Run water (Refer to Tables 1, 2, and 3 for the amount to be filled) Since backwash will be performed later, it is unnecessary to level the top surface of the resin layer.

  • Page 27: Procedures After Replacement

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 (2) Reassembly of the piping See procedures (2) and (3) on page 21 to A gap of 4 mm to 5 The expansion joint reassemble the piping. Note: When installing the expansion joint, tighten it Nut side evenly so that a gap of 4 mm to 5 mm remains between the flange of the expansion joint and the PVC flange (measured at the...

  • Page 28: Resin Replacement On The Other Unit And Procedures After Replacement

    MIURA_CONFIDENTIAL Document No.: S827-088-4010 4. Pressing the manual regeneration switch starts the process stepping (move stepwise from backwash to fast rinse). (4) For the unit on which the resin replacement is performed, reset the total amount of passing water after the resin replacement. Note:Refer to “6-2-6 Management Data Mode : Resetting Water Volume after Replacement of Ion-exchange Resin)”...

This manual is also suitable for:

Mw-65hMw-35uMw-250cMw-100hMw-65uMw-400c ... Show all

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