Miura MW-35U Operation Manual
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Miura MW-35U Operation Manual

Miura MW-35U Operation Manual

System integrated water softener
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OPERATION
MANUAL
System Integrated
Water Softener
MW-35U
MW-65U
MW-65U
MW-100U
MW-150U
MW-250U
MW-400U
MW-600U
MW-1000U
(America 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.
Manual Code No.
)
S827-089-020B

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  • Page 1 OPERATION MANUAL System Integrated Water Softener MW-35U MW-65U MW-65U MW-100U MW-150U MW-250U MW-400U MW-600U MW-1000U (America 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.
  • Page 2 Release date: Feb. 2022...
  • Page 3 If any part used in the product fails, contact your dealer or MIURA sales office to replace it with its genuine part. Using parts of different models might reduce safety.
  • Page 4 Introduction Introduction This document describes the methods of handling the MW model system integrated water softener (hereinafter, the “water softener”) to ensure its proper use. Not only those who use the boiler for the first time but also those who know the handling methods should read this document carefully and understand the proper handling methods before use of the water softener.

  • Page 5: Definition Of Terms

    Substance formed by impurities contained in the water, such as Scale calcium and magnesium, which adhere to the water tube of the boiler. The primary unit for MW-35U to 400U, and the unit with a pressure No. 1 unit gauge for MW-600U and MW-1000U of two units constituting the water softener.

  • Page 6: Table Of Contents

    4. Specifications .................. 16 Note 5 ......................... 17 5. Component Names ................20 5.1 Component Names (MW-35U, 65U) ............20 5.2 Component Names (MW-100U, 150U, MW-250U, and MW-400U)....21 5.3 Component Names (MW-600U and MW-1000U) ......... 22 5.4 Names and Functions for the Control Panel ..........23...
  • Page 7 Table of Contents SECTION 3: OPERATION .............. 24 1. Working with the LCD Screen ............24 1.1 LCD Screen Display ..................24 1.2 Details for Each Display Item ............... 25 2. Inspection and Preparation for Operation ......... 27 3. Preparation before Use ..............28 3.1 Connecting the Water Softener to a Power Supply ........
  • Page 8 Table of Contents SECTION 8: WARRANTY ............... 48 1. Questions regarding Warranty ............48 2. Questions regarding the Product and Operation Manual ....48 3. If the Operation Manual is Lost ............48...

  • Page 9: Section 1: Safety

    3) The documents to be submitted and their destination vary depending on your equipment and facilities. If you have any questions, contact your nearest dealer, MIURA sales office, or the competent supervisory authority. 4) The laws and regulations listed below may not apply to all water treatment equipment. Refer only to those laws and regulations that apply to your equipment and facilities.

  • Page 10: Safety-Related Knowledge And Expertise

    2) This table shows the laws and regulations as of the end of September 2017. For the most up-to-date information, contact the competent administrative authority. 3) The management and handling differ depending on the chemicals you handle. If you have any questions, contact your nearest dealer, MIURA sales office, or the competent administrative authority.

  • Page 11: Mw-35U,65U

    SECTION 1: SAFETY 5.1 MW-35U,65U 5.2 MW-100U, 150U, 250U, 400U...

  • Page 12: Mw-600U, 1000U

    SECTION 1: SAFETY 5.3 MW-600U, 1000U...

  • Page 13: Safety Precautions

    SECTION 1: SAFETY 6. Safety Precautions 6.1 Safety during Installation During installation, observe the following safety information. WARNING Ensure that drain piping is fixed securely in place to prevent it moving in reaction to water discharge and that the end of the piping opens in a safe location such as a pit.

  • Page 14: Safety During Inspection And Preparation (Excerpt From Page 27 Onward)

    SECTION 1: SAFETY CAUTION Dew drops may occur depending on environment conditions including the raw water temperature and the atmosphere in the installation location. If necessary, take measures to prevent dew condensation on this device and external piping, such as installing heat insulation. Also, factors such as loose connectors and aging of pipe materials can lead to water leakage.

  • Page 15: Safety During Operation (Excerpt From Page 28 Onward)

    SECTION 1: SAFETY CAUTION Dew drops may occur depending on environment conditions including the raw water temperature and the atmosphere in the installation location. If necessary, take measures to prevent dew condensation on this device and external piping, such as installing heat insulation. Also, factors such as loose connectors and aging of pipe materials can lead to water leakage.

  • Page 16: Safety During Inspection And Maintenance (Excerpt From Page 35 Onward)

    If manual regeneration is performed, the normal unit enters the regeneration process, and the following situations occur.  In the case of the MW-35U to 400U Water bypass occurs in the control valve during regeneration . Hard water is supplied and scale buildup may occur in the boiler during regeneration ...

  • Page 17: Safety During Troubleshooting (Excerpt From Page 41 Onward)

    CAUTION When the Alarm [A210-01] (Both units failure at same time) occurs, in the case of the MW-35U to 400U, hard water is supplied and scale buildup may occur in the boiler. In the case of the MW-600U and MW-1000U, water flow may stop completely.

  • Page 18: Safety During Storage (Excerpt From Page 46 Onward)

    If the Caution [C210-01]/[C210-02] (Control valve defect) or [C210-03]/[C210- 04] (Controller defect) occurs and the normal unit enters the regeneration process, the following situations occur.  In the case of the MW-35U to 400U Water bypass occurs in the control valve during regeneration . Hard water...

  • Page 19: Section 2: Overview

    SECTION 2: OVERVIEW SECTION 2: OVERVIEW 1. Usage and Functions 1.1 Usage This product is a device that supplies soft water by using ion exchange resin to remove hardness (calcium and magnesium ions) from water. NOTE This product is not suitable for beverage and food processing, so make sure the treated water is not to be directly used for human consumption.

  • Page 20: Work Mechanism

    Raw water (Hard water) Ion exchange resin Treated water (Soft water Calcium ion Magnesium ion Raw water inlet Treated water outlet Raw water inlet Treated water outlet MW-35U to 400U MW-600U and MW-1000U Figure 2-1: Mechanism of hardness -components removal...

  • Page 21: Regeneration (*) Of Ion Exchange Resin (*)

    Ion exchange resin Regeneration drain Calcium ion Magnesium ion Regeneration drain outlet Regeneration drain outlet Regeneration drain outlet MW-35U to 400U MW-600U and MW-1000U MW-600U and MW-1000U (Brine process) (Brine 2 process) Figure 2-2: Regeneration mechanism of ion exchange resin...

  • Page 22: Water Softener Processes

    SECTION 2: OVERVIEW 2.3 Water Softener Processes Eight processes are available with this water softener and their functions are as follows. Table 2-1: Water softener processes Process Process functions Required time Service (Water This process supplies raw water to the resin layer ―...

  • Page 23: Features

    Online Maintenance Support The status of the water softener can be monitored by a MIURA representative office or the online center at MIURA headquarters using the communications function. The office or online center is also notified of alarms and different types of errors by the water softener automatically.

  • Page 24: Specifications

    SECTION 2: OVERVIEW 4. Specifications Place a check mark inside the relevant model boxes (). Table 2-2: Specifications (MW-35U, MW-65U, and MW-100U) ITEM UNITS SYSTEM WATER SOFTENER Model — MW-35U MW-65U MW-100U Resin volume 35 × 2 65 × 2 100 ×...

  • Page 25: Note 5

    Note 1: If the electric conductivity of raw water is less than 60mS/m, it may be possible to increase the flow rate. Please contact your dealer or MIURA sales office Note 2: This is the maximum pressure loss during operation.
  • Page 26 Please contact your dealer or MIURA sales office Note 2: This is the pressure loss during normal operation. (With a water temperature of 68°F) In MW-35U to MW-400U, the two units are connected in series. Therefore, the water flow pressure loss fluctuates depending on the condition of the other unit.
  • Page 27 SECTION 2: OVERVIEW Note 7: This is the value for the raw water pressure range when the amount of regenerating salt is set to default. Note 8: This is the value for the raw water pressure range. Note 9: In the primary piping of MW-600U, 1000U, the flow rate in the collecting pipe section before branching to each unit increases when service process and regeneration process overlap, so the pipe diameter is recommended that MW-600U:3”...

  • Page 28: Component Names

    Relief valve *When the raw water pressure is high Pressure reducing valve Water *When the raw water flowmeter pressure is high Water sampling port Maintenance valve Regeneration drain outlet Strainer Raw water Figure 2-3: Component names (MW-35U and 65U) inlet...

  • Page 29: Component Names (Mw-100U, 150U, Mw-250U, And Mw-400U)

    SECTION 2: OVERVIEW 5.2 Component Names (MW-100U, 150U, MW-250U, and MW-400U) Control valves Control panel Colormetry (Sold separately) Control box Brine tank No. 2 unit No. 1 unit Water sampling Pressure switch port Pressure gauge Water flowmeter Reliefvalve * When the raw water Flow control pressure is high valve...

  • Page 30: Component Names (Mw-600U And Mw-1000U)

    SECTION 2: OVERVIEW 5.3 Component Names (MW-600U and MW-1000U) Control panel No. 1 unit Pressure gauge No. 2 unit Brine tank Bypass valve assembly Control valve assembly Brine flowmeter Raw water inlet Maintenance valve Pressure reducing valve Strainer Water * When the raw sampling water pressure Relief valve...

  • Page 31: Names And Functions For The Control Panel

    SECTION 2: OVERVIEW 5.4 Names and Functions for the Control Panel “Normal” lamp “Stop Buzzer/Check Notice” button “Notice” lamp “Alarm” lamp LCD screen “Item” button “Mode” button “Set/OK” button “Manual Regen.” button Figure 2-6: Names and functions for the control panel LCD screen •...

  • Page 32: Section 3: Operation

    SECTION 3: OPERATION SECTION 3: OPERATION 1. Working with the LCD Screen 1.1 LCD Screen Display The following information is displayed on the LCD screen. “Item” button or “Stop Buzzer/Check Notice” button changes the item displayed. Table 3-1: Display items on the LCD screen Item Display content Typical screen display...

  • Page 33: Details For Each Display Item

    SECTION 3: OPERATION 1.2 Details for Each Display Item 1.2.1 Water Softener Operation Status is displayed as 1:  and for No. 2 unit as 2: . Operation status for No. 1 unit (Ex.: 1: SRVC 2: S-STBY ) Operation status for each display item is as given below. Displayed text flashes while the water softener is proceeding to the next process.
  • Page 34 SECTION 3: OPERATION Procedures for Changing the Current Date and Time 08/08/08 12:34 Press “Set/OK” button. (Flashing cursor appears) S:08/08/08 12:34 Press “Mode” button. (Cursor moves) Press “Item” button. (Numeral changes) S:09/08/08 12:34 S:09/08/08 12:34 Press “Set/OK” button. Press “Set/OK” button. (Current date and time set) (Current date and time set)

  • Page 35: Inspection And Preparation For Operation

    Ensure that no water is leaking from the water softener. • Do not operate the water softener if water is leaking. • Make sure the main power breaker of the water softener is OFF. • If water is leaking, contact your dealer or MIURA sales office.

  • Page 36: Preparation Before Use

    If this kind of state forms, it will become impossible to produce the brine required for regeneration . To avoid this, MIURA recommends adding only enough so that the surface of the water Cavity can be seen as shown in Figure 3-3.

  • Page 37: Checking Raw Water (*) Pressure

    In such a case, take measures such as installing a pressure reducing valve. If the inlet pressure is less than 22 psi for MW-35U to 400U, or less than 26 psi for MW-600U and MW-1000U, it may cause poor regeneration...

  • Page 38: Start And Stop

    No. 2 unit Bypass valve assembly (Normally service) No. 1 unit Bypass valve assembly (Normally service) Figure 3-6: Locations of valves (MW-35U and 65U) No. 2 unit inlet valve (Normally open) No. 1 unit inlet valve (Normally No. 2 unit...
  • Page 39 • Make sure no water is leaking from the piping and flanges. • If a water leakage is detected, retighten the location of water leakage. • If water is still leaking, it is required to replace seals or other parts. In such a case, contact your dealer or MIURA sales office.

  • Page 40: Stop

    • If the water softener fails and cannot supply soft water , bypass the water softener. In this case, the water softener will supply hard water. Contact your dealer or MIURA sales office immediately. How to bypass the water softener (MW-35U, 65U) Bypass handle ...

  • Page 41: Manual Regeneration

    • If the water softener will not be used for a long period of time, contact your dealer or MIURA sales office for assistance as there is a need to leave the water softener in a suitable condition.
  • Page 42 • Regeneration proceeds automatically. Regeneration is complete in approx. 1 to 3 hours with MW-35U 400U, and in approx. 3 to 6 hours with MW-600U and MW- 1000U. • The unit returns to Service process (or to Service standby) after regeneration ends.

  • Page 43: Section 4: Inspection And Maintenance

    • The checklist records the standard inspection and maintenance cycle, but this cycle may change depending on water quality and operating conditions. Therefore, follow the instructions of your dealer or MIURA sales office. Table 4-1: Inspection and maintenance checklist Timing...

  • Page 44: Check For Regenerating Salt

    SECTION 4: INSPECTION AND MAINTENANCE c) Add hardness indicator. Hold the container of the hardness checker Hardness indicator upside down, and slowly add 4 drops of the hardness indicator to the sampling beaker. d) Add the treated water. Add about 0.7FL.OZ. of water from the water sampling port into the sampling beaker, and swirl the sample to mix thoroughly.

  • Page 45: Inspection And Maintenance To Be Performed Every Four Months

    Failure to complete the check of water quality may result in decreased boiler efficiency and water tube damage due to hardness leakage. MIURA has the capability of providing water quality analysis. Consult your dealer or MIURA sales office for water quality testing.

  • Page 46: Strainer Cleaning

    SECTION 4: INSPECTION AND MAINTENANCE 3.2 Strainer Cleaning In MW-35U to 400U, a strainer is installed at the primary side of the water softener, and in MW-600U and MW-1000U, a strainer is installed at both the primary side and the secondary side.
  • Page 47 Remove the strainer mesh and clean it with a brush. • If the rust cannot be removed from the gaps in the mesh or significant deformation has occurred, the strainer must be replaced. In such a case, contact your dealer or MIURA sales office.

  • Page 48: Inspection And Maintenance To Be Performed Every Five Years

    AC/DC adaptor malfunction. a) Prepare the replacement AC/DC adaptor nearby. Please contact your dealer or MIURA sales office for the replacement AC/DC adaptor. b) After confirming that the water softener is not regenerating, replace the AC/DC adaptor.

  • Page 49: Section 5: Troubleshooting

    SECTION 5: TROUBLESHOOTING SECTION 5: TROUBLESHOOTING 1. Checks and Actions in Case of Failure 1.1 Types of Notice If a failure or defect occurs, a notice is displayed on the LCD of the control panel. Notices are divided into the following three types depending on the severity of the problem.
  • Page 50 CAUTION When the Error [A210-01] (Both units failure at same time) occurs, in the case of the MW-35U to 400U, hard water is supplied and scale buildup may occur in the boiler. In the case of the MW-600U and MW-1000U, water flow may stop completely.

  • Page 51: Caution And Notice

    SECTION 5: TROUBLESHOOTING 1.3 Caution and Notice When a caution or notice is generated, in addition to display of the alarm code on the LCD screen of the control panel, the buzzer sounds, and the “Notice” lamp flashes. * The buzzer does not sound for a notice. a) Stop the buzzer.
  • Page 52 (Controller defect occurs and the normal unit enters the regeneration process, the following situations occur.  In the case of the MW-35U to 400U Water bypass occurs in the control valve during regeneration . Hard water is supplied and scale buildup may occur in the boiler during regeneration ...

  • Page 53: Actions To Be Taken Before Ordering Repairs

    • If the problem persists even after countermeasures have been taken, stop operation of the water softener immediately, and contact your dealer or MIURA sales office. “4.2 Stop” in SECTION 3 on page 32 Table 5-4: Troubleshooting overview...

  • Page 54: Section 6: Storage

    Operation Manual and product-related materials together to the next customer. 3. Export This product was manufactured for use in the country where MIURA judges that the export of the product is allowable. Therefore, the full performance may be inhibited due to differences in operating environment if the product is used outside the current country of use.

  • Page 55: Section 7: Disposal

    SECTION 7: DISPOSAL SECTION 7: DISPOSAL 1. Disposal When disposing of the product, comply with the laws and regulations.
  • Page 56 For any questions about your purchased product or the content of this Operation Manual, contact your dealer or MIURA sales office. 3. If the Operation Manual is Lost The Operation Manual contains the information for the safe usage. In the event of loss of the Operation Manual, contact your dealer or MIURA sales office.

This manual is also suitable for:

Mw-65uMw-100uMw-150uMw-250uMw-400uMw-600u ... Show all

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