Miura MW-35U Maintenance Manual
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Miura MW-35U Maintenance Manual

Miura MW-35U Maintenance Manual

System integrated water softener
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MAINTENANCE MANUAL
SYSTEM INTEGRATED WATER SOFTENER
MW-35U - 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.
MIURA CO., LTD.
Manual Code No.
S827-089-0917

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Summary of Contents for Miura MW-35U

  • Page 1 MAINTENANCE MANUAL SYSTEM INTEGRATED WATER SOFTENER MW-35U - 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: Table Of Contents

    1.1.3 MW-600U and MW-1000U ....................3 Control Box –– Internal Diagram ..................... 5 1.2.1 MW-35U, MW-65U, MW-100U, MW-150U, MW-250U, and MW-400U ......5 1.2.2 MW-600U and MW-1000U ....................6 Names and Functions of the Control Panel ................7 Names and Functions of Operated Parts on CPU Board ............8 Flow Sheet ..........................
  • Page 3 MIURA_CONFIDENTIAL No. S827-089-0917 3.3.3 Backwash Process ......................34 3.3.4 Backwash → Regeneration Standby Process Transition ..........35 3.3.5 Regeneration Standby Process ..................36 3.3.6 Regeneration Standby → Brine Process Transition ............37 3.3.7 Brine Process ......................... 38 3.3.8 Brine → Slow Rinse Process Transition ................ 39 3.3.9 Slow Rinse Process .......................

  • Page 4: System Construction And Description Of Parts

    Pressure switch Pressure gauge Water flowmeter Pressure reducing valve * Installed when the raw water pressure is high Inlet valve (procured on site Water sampling port Regeneration drain outlet Strainer Raw water Rear view inlet Figure 1.1: System Overview (MW-35U, MW-65U)

  • Page 5: Mw-100U, Mw-150U, Mw-250U, And Mw-400U

    MIURA_CONFIDENTIAL No. S827-089-0917 1.1.2 MW-100U, MW-150U, MW-250U, and MW-400U ※Piping shape is slightly different between MW-100U and MW-150 to MW-400U. ※Resin tank shape is slightly different between MW-100U/150U and MW-250/400U. Control valve Control panel Brine tank No. 1 unit Ggou No.

  • Page 6: Mw-600U And Mw-1000U

    MIURA_CONFIDENTIAL No. S827-089-0917 1.1.3 MW-600U and MW-1000U Control panel * The only difference between Pressure the No.1 unit and No.2 unit is gauge the existence of the pressure gauge and pressure switch. No.1 unit The pressure gauge and pressure switch are installed on the No.1 unit.
  • Page 7 MIURA_CONFIDENTIAL No. S827-089-0917 When water bypasses water softener Inlet valve “Open” Bypass valve “Closed” When three handles are turned by 180° Outlet valve and indications “Open” are reversed, water is bypassed. * Open the valves as shown above during operation. Details of manual valve assembly (bypass valve) Raw water inlet...

  • Page 8: Control Box -- Internal Diagram

    Relay circuit board * In the case of an old type MW, AC power is supplied to the control box, and the switching power supply and fuses are installed in the box. Figure 1.5: Control Box Internal Diagram (MW-35U to MW-400U)

  • Page 9: Mw-600U And Mw-1000U

    MIURA_CONFIDENTIAL No. S827-089-0917 1.2.2 MW-600U and MW-1000U DS-NET terminal block DIP switches CPU board Relay Terminal block Relay circuit board * In the case of an old type MW, AC power is supplied to the control box, and the switching power supply and fuses are installed in the box.

  • Page 10: Names And Functions Of The Control Panel

    MIURA_CONFIDENTIAL No. S827-089-0917 1.3 Names and Functions of the Control Panel “Stop Buzzer/Check Notice” button LCD screen Lamps “Item” button “Manual Regen.” button “Mode” button “Set/OK” button Figure 1.7: Control Panel LCD screen • Displays operating status, settings information, and alarm messages. “Stop Buzzer/Check Notice”...

  • Page 11: Names And Functions Of Operated Parts On Cpu Board

    MIURA_CONFIDENTIAL No. S827-089-0917 “Set/OK” button • Flashes the displayed character string to allow the setting to be changed when a set item is displayed. • If this button is pressed while the setting can be edited (flashing), the flashing character string lights continuously and the set value is confirmed.
  • Page 12  SW1-3: Turn ON only when the equipment model is MW-600U or MW-1000U. Operation with the switch ON is exclusive for MW-600U and MW-1000U. When the equipment model is MW-35U, MW-65U, MW-100U, MW-150U, MW-250U, or MW-400U, turn OFF this switch. (The setting has been made before shipment.)
  • Page 13 MIURA_CONFIDENTIAL No. S827-089-0917  SW2-3: Turn OFF → ON → OFF to reset the microcomputer. [Caution] Do not inadvertently use All clear or Memory clear to clear alarms. This may cause the system to malfunction.

  • Page 14: Flow Sheet

    MIURA_CONFIDENTIAL No. S827-089-0917 1.5 Flow Sheet 1.5.1 MW-35U, MW-65U Note 1: The water softener main units and accessories are given PART NAME PART NAME in the Control valve assembly Brine flowmeter 2: No. 15–No. 20 are to be procured separately as needed.

  • Page 15: Mw-100U,Mw-150U, Mw-250U, And Mw-400U

    MIURA_CONFIDENTIAL No. S827-089-0917 1.5.2 MW-100U,MW-150U, MW-250U, and MW-400U Note 1: The water softener main units and accessories are given PART NAME PART NAME in the Control valve assembly Water flowmeter 2: No. 17–No. 22 are to be procured separately as needed. Resin tank Brine flowmeter 3: No.

  • Page 16: Mw-600U And Mw-1000U

    MIURA_CONFIDENTIAL No. S827-089-0917 1.5.3 MW-600U and MW-1000U...

  • Page 17: Lcd Display And Settings

    MIURA_CONFIDENTIAL No. S827-089-0917 2. LCD Display and Settings 2.1 Operation and Display Flowchart Figure 2.1 shows the overall flow of the operations and displays.

  • Page 18: Details Of Each Mode

    MIURA_CONFIDENTIAL No. S827-089-0917 2.2 Details of Each Mode 2.2.1 Display when Powering Up After powering up, the LCD backlight lights and the buzzer sounds. After the ROM version is displayed for 2 seconds, the display reverts to the user mode top screen. 2.2.2 User Mode This mode displays the MW status.
  • Page 19 MIURA_CONFIDENTIAL No. S827-089-0917 Table 2.2: Operating Processes and Displays LCD SCREEN DETAILS OF NO.1/2 PROCESS DESCRIPTION DISPLAY UNIT Service Standby S-STBY S-STBY Service Standby → Service SRVC SRVC Displayed flashing. Transition Displays the instantaneous flow rate. “—” is displayed if the flowmeter has failed. Service SRVC SRVC xxx.xgpm...

  • Page 20: Setting Modes

    • In the case of the MW-35U, MW-65U, NW-100U, MW-150U, MW-250U, and MW-400U, water bypass occurs in the control valve during regeneration. Even if one unit fails and the other normal unit enters the regeneration process, the water flow continues.
  • Page 21 NC: Enter signal with contacts that open when low water level occurs (10) Online Set “Y” to make an online maintenance notification to Miura when a warning, Maintenance caution, or notice occurs. Set “N” to disable online maintenance notifications to...
  • Page 22 1.050 or 7.690 Constant (10) Salt Refill S:SLT_RFLL:_user Miura, user user *When SW1-3 is set to “OFF” : MW-22J When SW1-3 is set to “ON” : MW-200J Date of Update: Enter the date when the settings were changed. This item is used to confirm the maintenance history.
  • Page 23 Do not unnecessarily change this setting. When set to “Miura”, the alarm (10) “F800-06 Replenish Salt” is notified online to Miura, and it is not displayed on the unit control panel. Note: Not set automatically if the “Type” or “Regeneration level” setting is changed by communications or the...
  • Page 24 780,000 854,000 The MW-35U to MW-600U can perform up to two regenerations per day (one regeneration per unit). Consequently, the water softener offers a maximum hardness removal capacity that is double the hardness removal capacity shown in Table 2.5. (See Table 2.6.) If the regeneration level is set to 90 to 180 g/L-R in MW-1000U, regeneration of up to twice a day, which is attained by other models, is possible.
  • Page 25 MIURA_CONFIDENTIAL No. S827-089-0917 The daily water softening capacity is determined from this maximum hardness removal capacity and (Note 1) the raw water hardness using the following expression: Daily water softening capacity [ GPD ] = Daily water softening capacity [ lb/day ] / 8.345 = Maximum removal capacity of hardness [ grains/day ] / 7000 ÷...
  • Page 26 MIURA_CONFIDENTIAL No. S827-089-0917 Table 2.7: Daily Water Softening Capacity by Model and Regeneration Level MW - 35U [ GPD ] MW - 65U [ GPD ] CONVERTED CONVERTED REGENERATION LEVEL [ g / L - R ] REGENERATION LEVEL [ g / L - R ] RAW WATER RAW WATER HARDNESS...
  • Page 27 MIURA_CONFIDENTIAL No. S827-089-0917 MW - 600U [ GPD ] MW - 1000U [ GPD ] CONVERTED CONVERTED REGENERATION LEVEL [ g / L - R ] REGENERATION LEVEL [ g / L - R ] RAW WATER RAW WATER HARDNESS HARDNESS [ mg/L ] [ mg/L ]...

  • Page 28: I/O Modes

    MIURA_CONFIDENTIAL No. S827-089-0917 2.2.4 I/O Modes This mode is used to confirm the microcomputer input and outputs statuses. The displayed items are listed in Table 2.8. Press the button to switch the items. Item ↑ Table 2.8: Data Displayed in I/O Mode ITEM SAMPLE DISPLAY DESCRIPTION...

  • Page 29: Alarm History Mode

    MIURA_CONFIDENTIAL No. S827-089-0917 2.2.5 Alarm History Mode This mode displays the history of the warnings, cautions, and notices generated by the MW water softener. It displays the ten most recent events. [[Alarm_History]_] • Press the button to switch Date and time that the Item Item ↑...

  • Page 30: Maintenance Manual Regeneration Mode

    MIURA_CONFIDENTIAL No. S827-089-0917 2.2.7 Maintenance Manual Regeneration Mode This mode permits manual regeneration of the No.1 or No.2 unit. This mode can be used for forced regeneration that ignores interlocks and other items that inhibit regeneration. Button operations during regeneration can be used to advance the process. •...

  • Page 31: Control Overview

    CMU-G”) to be removed the next day (next 24 hours) is compared to the residual capacity. Regeneration starts if the residual capacity is smaller. [Caution] During regeneration, raw water (hard water) bypass occurs for MW-35U to MW-400U. For MW-600U and MW-1000U, water feed to the secondary side is stopped.

  • Page 32: Single-Unit Periodic Regeneration

    24 hours. [Caution] During regeneration, raw water (hard water) bypass occurs for MW-35U to MW-400U. For MW-600U and MW-1000U, water feed to the secondary side is stopped.

  • Page 33: Regeneration Process Control

    Details of the operation of each process are described on the pages below. [Caution] The regeneration methods, connections between two units, and valve driving methods differ between “MW-35U, MW-65U, MW-100U, MW-150U, MW-250U, and MW-400U” and “MW-600U and MW- 1000U”. Therefore, their regeneration processes and control valve opening and closing operations are different.
  • Page 34 MIURA_CONFIDENTIAL No. S827-089-0917  MW-600U and MW-1000U Start CPU • Previous state not saved • Memory Clear / All Clear performed Previous state is saved Unit Error ↓ Control valve Return to saved position manual reset "C210-01/02" or state. "C210-03/04" occurred Control valve Service Standby Service Standby...

  • Page 35: Service Process

    Water supply valve 2 No. 1 unit No.2 unit <Service> ＜Service＞ Raw water Softened water No. 1 Unit: Service / No. 2 Unit: Service Standby No. 1 Unit: Service Standby / No. 2 Unit: Service (MW-100U, MW-150U, MW-250U and MW-400U) (MW-35U and MW-65U)

  • Page 36: Service → Backwash Process Transition

    MIURA_CONFIDENTIAL No. S827-089-0917 Raw water No. 2 unit No. 1 unit <Service <Service> Standby> Water supply valve 1 Water supply valve 2 Regeneration drain Regeneration drain Softened water No. 1 Unit: Service / No. 2 Unit: Service Standby (MW-600U and MW-1000U) 3.3.2 Service →...

  • Page 37: Backwash Process

    Backwash process. The clock stops in the low pressure “R-WT PRES drop” status. In the case of MW-35U, MW-65U, MW-100U, MW-150U, MW-250U, and MW-400U, soft water from No. 1 unit is used to backwash No. 2 unit. As the drain volume for this backwashing is not measured by the water flowmeter at the outlet side, immediately after this process, the preset backwash volume is subtracted from the residual capacity for No.

  • Page 38: Backwash → Regeneration Standby Process Transition

    MIURA_CONFIDENTIAL No. S827-089-0917 Raw water No. 1 unit No. 2 unit <Backwash> <Service> Raw water Backwash pressure switch valve Water supply Water supply valve 1 valve 1 Bypass valve Water supply Water supply valve 2 valve 2 Regeneration drain Regeneration drain Softened water No.

  • Page 39: Regeneration Standby Process

    No.2 unit No. 1 unit ＜Regeneration <Regeneration standby＞ Standby> Raw water Softened water No. 1 Unit: Service / No. 2 Unit: Regeneration standby No. 1 Unit: Regeneration standby / No. 2 Unit: Service (MW-35U and MW-65U) (MW-100U, MW-150U, MW-250U and MW-400U)

  • Page 40: Regeneration Standby → Brine Process Transition

    MIURA_CONFIDENTIAL No. S827-089-0917 Raw water No. 1 unit No. 2 unit <Regeneration <Service> Backwash Standby> valve Water supply valve 1 Bypass valve Water supply valve 2 Regeneration drain Regeneration drain Softened water No. 1 Unit: Regeneration Standby / No. 2 Unit: Service (MW-600U and MW-1000U) * When the PLC program version is 2.00 or earlier, the bypass valve of the unit in Regeneration Standby process is closed.

  • Page 41: Brine Process

    Fast rinse valve * MW-35U, MW-65U, MW-100U, MW-150U, MW-250U, and MW-400U continue in bypass. Operation switches to the next process when the total brine suction volume from the brine flowmeter reaches the value preset by the “Type” and “Regeneration level” settings. When the raw water pressure switch monitoring the raw water pressure is in normal pressure “R-WT PRES: Yes”...

  • Page 42: Brine → Slow Rinse Process Transition

    MIURA_CONFIDENTIAL No. S827-089-0917 Raw water No. 1 unit No. 2 unit <Brine> <Service> Raw water pressure switch Water supply valve 1 Injector valve 1 Brine flowmeter Fast rinse Water supply valve valve 2 Injector nozzle Brine throat valve Regeneration drain Regeneration drain Softened water No.

  • Page 43: Slow Rinse Process

    Fast rinse valve distributor. * MW-35U, MW-65U, MW-100U, MW-150U, MW-250U, and MW-400U continue in bypass. The operation switches to the next process when the raw water pressure switch monitoring the raw water pressure is in normal pressure “R-WT PRES: Yes” status for a cumulative time exceeding the set time for the Slow Rinse process.

  • Page 44: Slow Rinse → Fast Rinse Or Brine 2 Process Transition

    The control valve motor rotates to open or close the valve. In the case of MW-35U to MW-400U, see “3.3.15 Fast Rinse Process” on page 44. In the case of MW-600U and MW-1000U, see “3.3.11 Brine 2 Process” on page 42.

  • Page 45: Brine 2 Process

    MIURA_CONFIDENTIAL No. S827-089-0917 3.3.11 Brine 2 Process * MW-600U and MW-1000U only This process applies to MW-600U and MW-1000U only (LCD display: BRINE*). The open/closed states of the valves change as shown in the diagram below to supply raw water to the ejector to suck the brine out of the brine tank and introduce the brine into the resin tank.

  • Page 46: Slow Rinse 2 Process

    MIURA_CONFIDENTIAL No. S827-089-0917 3.3.13 Slow Rinse 2 Process * MW-600U and MW-1000U only This process applies to MW-600U and MW-1000U only (LCD display: S-RNS*). The open/closed states of the valves change as shown in the diagram below. The brine valve closes to stop the intake of brine, and raw water slowly rinses the inside of the resin tank.

  • Page 47: Fast Rinse Process

    Fast Rinse process. The clock stops in the low pressure “R-WT PRES drop” status. In the case of MW-35U,MW-65U,MW-100U,MW-150U, MW-250U, and MW-400U, soft water from No. 1 unit is used to fast rinse No. 2 unit. As the drain volume for this fast rinse is not measured by the water flowmeter at the outlet side, immediately after this process, the preset fast rinse volume is subtracted from the residual capacity for No.

  • Page 48: Fast Rinse → Refill Process Transition

    MIURA_CONFIDENTIAL No. S827-089-0917 Raw water No. 2 unit No. 1 unit Regeneration <Fast Rinse> <Service> drain valve Water supply Water supply valve 1 valve 1 Injector valve 2 Fast rinse Water supply valve valve 2 Regeneration drain Regeneration drain Softened water No.

  • Page 49: Refill Process

    No. 1 unit No.2 unit <Refill> ＜Fast Rinse＞ Raw water Brine valve Softened water No. 1 Unit: Service / No. 2 Unit: Refill No. 1 Unit: Refill / No. 2 Unit: Service (MW-35U and MW-65U) (MW-100U, MW-150U, MW-250U and MW-400U)

  • Page 50: Refill → Service Standby Process Transition

    MIURA_CONFIDENTIAL No. S827-089-0917 Raw water No. 1 unit No. 2 unit <Refill> <Service> Raw water pressure switch Water supply Water supply valve 1 valve 1 Fast rinse Water supply valve valve 2 Brine valve Brine valve Regeneration drain Regeneration drain Softened water No.

  • Page 51: Service Standby Process

    No. 1 unit No.2 unit <Service Standby> ＜Service Standby＞ Raw water Softened water Service Standby Service Standby No. 1 Unit: Service / No. 2 Unit: No. 1 Unit: / No. 2 Unit: Service (MW-35U and MW-65U) (MW-100U, MW-150U, MW-250U and MW-400U)

  • Page 52: Service Standby → Service Process Transition

    MIURA_CONFIDENTIAL No. S827-089-0917 Raw water No. 1 unit No. 2 unit <Service <Service> Standby> Water supply valve 1 Water supply valve 2 Brine valve Regeneration drain Regeneration drain Softened water No. 1 Unit: Service Standby / No. 2 Unit: Service (MW-600U and MW-1000U) * When the PLC program version is 2.00 or earlier, the water supply valve 1 of the unit in Regeneration Standby process is closed.

  • Page 53: Unit Failure Process

    If a control valve failure occurs under this condition and the situation continues for a long time, raw water is supplied to the secondary side. (This is because raw water is bypassed inside the control valve during regeneration for MW-35U- 400U )
  • Page 54 MIURA_CONFIDENTIAL No. S827-089-0917 [Caution]  In the case of MW-600U and MW-1000U with FX1N-40MR type PLC, when the power has not been supplied to the water softener for a long period of time, the control valve position reset may not be performed due to running out of battery of the PLC, and an alarm “A210-01: Both units error at same time”...
  • Page 55 MIURA_CONFIDENTIAL No. S827-089-0917 (2) When PLC type: FX3G-40M , Program Ver. 3.00 With the power supplied to the MW water softener, short-circuit the terminals [ - ] and [X27] of the PLC for a second or longer to reset the PLC. Confirm that the “27” lamp of the PLC lights while the terminals are short-circuited.

  • Page 56: Control Valve Position Reset Process

    MIURA_CONFIDENTIAL No. S827-089-0917 3.3.22 Control Valve Position Reset Process This process moves the control valve position to detect the reset position (Fast Rinse process). The following two conditions cause this process to occur. The reset method is different in each case. ...

  • Page 57: Regeneration Control Data Table

    Regeneration level = 180 Regeneration level = 240 * As MW-35U to MW-400U contain two units connected in series, soft water from the No. 1 unit is used for Backwash and Fast Rinse of the No. 2 unit. ITEM...

  • Page 58: Control When Regeneration Ends

    MIURA_CONFIDENTIAL No. S827-089-0917 3.5 Control when Regeneration Ends When regeneration is complete, the internal control processing occurs according to the evaluations below. 3.5.1 Residual Capacity Reset Processing When the MW regeneration process ends (Fast Rinse → Refill Transition), the MW water softener evaluates if regeneration ended normally and performs one of the three residual capacity reset processes below.

  • Page 59: Regeneration Interlock Time Processing

    MIURA_CONFIDENTIAL No. S827-089-0917 3.5.2 Regeneration Interlock Time Processing To ensure that the optimal brine concentration for regeneration is available, the regeneration interlock time is set to prevent the operation from switching to the Brine process at least for 6 hours while creating the brine after the end of the previous regeneration.
  • Page 60 MIURA_CONFIDENTIAL No. S827-089-0917 Hardness leakage regeneration condition (1) The hardness leakage counter is A single hardness leakage is evaluated satisfied when hardness leakage counter reset if any measured result is if the Colormetry concentration alarms value reaches or exceeds the set "HARD less than the set "Hardness continue to the "Number of Retries."...

  • Page 61: Automatic Calculation And Control Of Amount Of Water Sampling With Colormetry

    MIURA_CONFIDENTIAL No. S827-089-0917 3.6.2 Automatic Calculation and Control of Amount of Water Sampling with Colormetry for Raw Water Hardness When the unit is in the Service process, MW calculates in real time the removed amount of hardness from the volume of water flow per unit of time and the raw water hardness, and subtracts the calculated amount from the residual capacity.

  • Page 62: Mom Communications

    MIURA_CONFIDENTIAL No. S827-089-0917 4. MOM Communications Using the computer inspection tool or MOM communications permits the observation of MW realtime information and various history data. It can also be used to save and load the settings data. 4.1 Saving and Loading the Settings The settings data can be changed on the screen below.
  • Page 63 MIURA_CONFIDENTIAL No. S827-089-0917 (5) OPR permit SIG COMM ID: To acquire the regeneration inhibit signal through communication when the WP2 is installed with the water softener, set the ID of the WP2. “00” is set by default. Do not change the settings unnecessarily. Changing the settings may lead to malfunction of the water softener.

  • Page 64: Guide To Screens

    MIURA_CONFIDENTIAL No. S827-089-0917 4.2 Guide to Screens MW offers approximately 30 communications screens. The most commonly used of these are described below. 4.2.1 Realtime Monitor Screen This screen provides realtime information about the system. It is refreshed automatically every few seconds.
  • Page 65 MIURA_CONFIDENTIAL No. S827-089-0917 (2) Shortcut Keys The shortcut buttons offer same operations and functions described in “2.2.7 Maintenance Manual Regeneration Mode” and “2.2.8 Control Valve Position Manual Reset Mode” on page 27. The buttons are highlighted only when the operation is enabled for the corresponding unit. When button is clicked, a confirmation dialog box is displayed to confirm whether to perform the operation.
  • Page 66 Displays “R-WT PRES: Yes” or “R-WT PRES drop” depending on the raw water pressure. “R-WT PRES: Yes” (OFF) “R-WT PRES drop” (ON) Raw water pressure: Raw water pressure: MW-35U to MW-400U 16.0 PSI or more 14.5 PSI or less MW-600U and MW- Raw water pressure:...

  • Page 67: Monitor Data Screen

    MIURA_CONFIDENTIAL No. S827-089-0917 4.2.2 Monitor Data Screen By acquiring individual files, this screen can display the current water softener status. The contents of this screen are similar to the Realtime monitor screen. Displayed information unique to this screen is described below. Figure 4.3: Monitor Data Screen Total service flow Displays the total service flow since regeneration completed and the Service process started.
  • Page 68 MIURA_CONFIDENTIAL No. S827-089-0917 Hardness leakage count Displays the total continuous number of times that the Colormetry measured value exceeded the “Hardness leakage judgment value” since the Service process started. This value is reset when a measured value drops below the “Hardness leakage judgment value” or when regeneration completes.

  • Page 69: Regeneration History Data Screen

    MIURA_CONFIDENTIAL No. S827-089-0917 4.2.3 Regeneration History Data Screen By acquiring individual files, this screen can display the 20 most recent regeneration history data items. The displayed information is described below. Figure 4.4: Regeneration History Data Screen (1) History Selection The drop-down menu lists the date and time regeneration started and the regenerated unit for the 20 most recent regeneration history items.
  • Page 70 MIURA_CONFIDENTIAL No. S827-089-0917 (3) Detailed Data When Regeneration Started Displays detailed data about both units when regeneration starts. (4) Evaluation to Stop Regeneration Displays the date and time regeneration completed and the regeneration completion state (see page 64). (5) Detailed Data During Regeneration Start time Displays the start time of each process.
  • Page 71 MIURA_CONFIDENTIAL No. S827-089-0917 Cancel REGEN Displays “Yes” if a unit failure occurred or a control valve position manual reset was performed during each process. Regeneration stop Shows the accumulated time in each process that the regeneration clock stopped due to low raw water pressure or power failure.

  • Page 72: Alarm History Data Screen

    MIURA_CONFIDENTIAL No. S827-089-0917 4.2.4 Alarm History Data Screen By acquiring individual files, this screen can display the history data for the 10 most recent alarms. The displayed information is described below. Figure 4.5: Alarm History Data Screen (1) History Selection The dialog box pull-down menu displays the date and time, alarm code, and alarm name of the 10 most recent alarms.
  • Page 73 MIURA_CONFIDENTIAL No. S827-089-0917 (2) Processing Alarms User RPT STAT Displays “Report” for an alarm with an LCD display. Displays “No RPT” for an alarm with no LCD display. Occurrence type Displays “New ALM” only. Transfer result Displays the alarm online notification result. Displays “No XFR” for an alarm with “No online notification”...
  • Page 74 MIURA_CONFIDENTIAL No. S827-089-0917 (4) External Input Status Displays the external signal input status when the alarm occurred. (5) External Output Status Displays the external signal output status when the alarm occurred.

  • Page 75: Guide To Warnings, Cautions, And Notices

    Drop in raw water pressure F700-08 ✓ ✓ ✓ ✓ Utilities check Power failure during F700-18 ✓ ✓ ✓ regeneration Water softener Replenishment of salt F800-06 ✓ ✓* ✓ ✓ management error * When “Salt Refill” in Setting Mode 2 is set to “Miura”.
  • Page 76 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE A200 [Event information] Low water level alarm signal input • Status of both units No water supply to MW.
  • Page 77 REMARKS In the case of MW-35U to MW-400U, raw water can be supplied to the secondary side even when both units are in regeneration process. However, take remedies as soon as possible due to concerns about scale buildup and continuous drainage.
  • Page 78 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE A500 [Event information] None specified Circuit board failure Is alarm canceled by turning power If alarm cannot be canceled, Memory data error Error detected during self-check...
  • Page 79 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE A510 [Event information] Safety key is not connected. None specified The safety key has Has the safety key been removed? Connect the safety key.
  • Page 80 The following situations may occur during single-unit regeneration based on time and flow rate or single-unit periodic regeneration. In the case of MW-35U to MW-400U, scale buildup may occur because raw water is supplied during regeneration. In the case of MW-600U and MW-1000U, because the water flow to the secondary side stops during the regeneration process, the water flow may be stopped completely when the normal unit enters the regeneration process.
  • Page 81 The following situations may occur during single-unit regeneration based on time and flow rate or single-unit periodic regeneration. In the case of MW-35U to MW-400U, scale buildup may occur because raw water is supplied during regeneration. In the case of MW-600U and MW-1000U, because the water flow to the secondary side stops during the regeneration process, the water flow may be stopped completely when the normal unit enters the regeneration process.
  • Page 82 The following situations may occur during single-unit regeneration based on time and flow rate or single-unit periodic regeneration. In the case of MW-35U to MW-400U, scale buildup may occur because raw water is supplied during regeneration. In the case of MW-600U and MW-1000U, because the water flow to the secondary side stops during the regeneration process, the water flow may be stopped completely when the normal unit enters the regeneration process.
  • Page 83 The following situations may occur during single-unit regeneration based on time and flow rate or single-unit periodic regeneration. In the case of MW-35U to MW-400U, scale buildup may occur because raw water is supplied during regeneration. In the case of MW-600U and MW-1000U, because the water flow to the secondary side stops during the regeneration process, the water flow may be stopped completely when the normal unit enters the regeneration process.
  • Page 84 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE C500 [Event information] None specified Defective circuit board Canceled when settings changed and If alarm cannot be canceled, Memory data error Anomalous recorded set value...
  • Page 85 • Does pump have capacity to maintain • Use a pump with Standby process). Urgency: As fast as pressure too low. the required water pressure (MW-35U adequate capacity. possible Sensor to MW-400U: 22 PSI / MW-600U and Display: * Does not occur when “A510-65”...
  • Page 86 (ML2, etc.) fails 255 times or more consecutively. Control Normal Countermeasures delayed Problems as the Miura office is not notified of the alarm. CANCELLATION METHOD (REMEDY) (1) Press “Stop Buzzer/Check Notice” button. (Buzzer stops. Flashing alarm lamp lights continuously.) (2) Press “Stop Buzzer/Check Notice”...
  • Page 87 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE F500 [Event information] • Long-term power Internally stored data • Did a long-term (10 days or longer) •...
  • Page 88 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE DETAILS TO CHECK BY PHONE OR ONSITE INSTRUCTIONS F520 [Event information] • Type item setting “Type” item is incorrect, • Is the “Type” item setting incorrect? •...
  • Page 89 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE DETAILS TO CHECK BY PHONE OR ONSITE INSTRUCTIONS F520 [Event information] • Type item setting “Type” item is incorrect, • Is the “Type” item setting incorrect? •...
  • Page 90 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE F520 [Event information] • Alarm history Leakage through brine • Is the brine valve float locked? •...
  • Page 91 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE F520 [Event information] • Alarm history Clogged ejector • Blockage in ejector nozzle/throat or •...

  • Page 92: No. S827

    MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE DETAILS TO CHECK BY PHONE OR ONSITE INSTRUCTIONS F520 [Event information] • Alarm history No salt in brine tank • Is there enough salt in the brine tank? •...
  • Page 93 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE F520 [Event information] • Process of both units Control error at • Are control and operation of the •...
  • Page 94 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE F530 [Event information] • Alarm history Manual valve or outlet • Is a manual valve closed in the feed •...
  • Page 95 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE DETAILS TO CHECK BY PHONE OR ONSITE INSTRUCTIONS F530 [Event information] No pulses received from the brine • Alarm history Clogged ejector •...
  • Page 96 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE DETAILS TO CHECK BY PHONE OR ONSITE INSTRUCTIONS F590 [Event information] • Alarm history CMU-G power is OFF. • Is the CMU-G power turned ON? •...
  • Page 97 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE F590 [Event information] • Alarm history CMU-H power is OFF. • Is the CMU-H power turned ON? •...
  • Page 98 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE F590 [Event information] • Alarm history Feed water device • Is the feed water device power turned •...
  • Page 99 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE F590 [Event information] • Alarm history WP2 power is OFF. • Is the WP2 power turned ON? •...
  • Page 100 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE F700 [Event information] • Alarm history No water supply to MW. • Is raw water pump stopped? •...
  • Page 101 MIURA_CONFIDENTIAL Maintenance Manual (System Integrated Water Softener MW) No. S827-089-0917 CODE ALARM ITEM ZIS EVALUATION CONDITIONS CHECK ITEMS CAUSE INSTRUCTIONS DETAILS TO CHECK BY PHONE OR ONSITE F700 [Event information] • Alarm history Failure of MW main • Is the main power turned ON? •...
  • Page 102 * Value in ( ) applies when error stops the flow. “Salt Refill” is set to —————————— ————————————————— ———————————— “Miura”. Brine concentration • Has foreign matter or contamination • Check and re-assemble, ALARM DESCRIPTION switch locked or attached to the brine concentration...

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