Miura EX-100 Operation Manual

Miura steam boiler

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MIURA STEAM BOILER

OPERATION MANUAL

EX-100

EX-150

EX-200

EX-250

EX-300

EXN-300

INFORMATION IN THIS MANUAL MAY BE CHANGED

WITHOUT ANY NOTICE.

Please ensure that operation manual is read and observed in full

by all persons working with the steam boiler.

Please also ensure that it is stored in a location where it may be

easily accessed.

Operation Manual Number: T539-998-9004

EXH-200

EXH-250

EXH-300

EXNH-300

Date of issue : Aug. 16, 2017

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Summary of Contents for Miura EX-100

Page 1 MIURA STEAM BOILER OPERATION MANUAL EX-100 EXH-200 EX-150 EXH-250 EX-200 EXH-300 EX-250 EXNH-300 EX-300 EXN-300 INFORMATION IN THIS MANUAL MAY BE CHANGED WITHOUT ANY NOTICE. Please ensure that operation manual is read and observed in full by all persons working with the steam boiler.
Page 2 Main Sections INTRODUCTION ESSENTIAL BOILER WATER TREATMENT COMPONENT NAMES & FUNCTIONS BASIC PRECAUTIONS PRE-OPERATION INSPECTION USING BOILER CONTROLS PREPARING FOR STARTUP OPERATING THE STEAM BOILER INSPECTION & MAINTENANCE 10. BREAKDOWN & COUNTERMEASURES 11. SPECIFICATIONS 12. APPENDIX...
Page 3 Table of Contents Main Sections ............................1 Table of Contents ............................. 2 INTRODUCTION ..........................4 Safety Indicators ..........................5 Glossary .............................. 6 Introduction ............................7 Features ............................7-7 Description ............................9 Acts & Regulations ..........................11 National Regulatory Organizations ....................12 ESSENTIAL BOILER WATER TREATMENT ..................
Page 4 Boiler Startup for Oil-fired Combustion ....................54 Inspection during Operation ......................55 Boiler Shutdown ..........................56 INSPECTION & MAINTENANCE ....................57 Preparing for Possible Freezing ......................58 9.1.1 Bleeding Water to Protect against Freezing ................58 Maintenance during Extended Inactivity ................... 59 Regular Maintenance Tasks and Timing ...................
Page 5 INTRODUCTION...
Page 6 Safety Indicators The following headings are used within this manual in order to ensure safe and efficient operation of your steam boiler. Please ensure that you fully understand the meaning of each and use the boiler accordingly. WARNING Failure to use the steam boiler orrectly could possibly lead to serious injury or death of the user.
Page 7 Glossary Please use the following table to confirm the meanings of special terms used within the operation manual. Term Meaning Low water level The action of preventing ignition when the normal water level has not been interlock achieved. Purging with air from the boiler’s combustion chamber before the start of Pre-purge combustion.
Page 8 The MIURA Advantage — proven in the field over fifty years of excellent service — is the ability of our boilers to reach full output steam from a cold start in less than five minutes using the least amount of energy and having the lowest environmental impact.
Page 9 ASME stamped pressure vessel with internal inspection ports External steam separator Digital steam-pressure display with a back up pressure gauge MIURA BL11 Microprocessor Boiler Control featuring a user-friendly digital display Communication interface functionality Display of hours of operation and logging of the seven most recent faults...
Page 10 This safety configuration may seem confusing to the inspector who encounters the MIURA Steam Boiler in the field for the first time, particularly because a water column typically indicates a fixed water level. This is not true for Miura’s steam boilers, because of the low water content and the fierce boiling action of the steam gradient.
Page 11 A full inspection is typically completed within 30 minutes. All MIURA steam boilers are annotated as a forced flow steam generator (with no fixed steam or water level) on the pressure vessel’s P-3 form and registered with the National Board. The complete packaged steam boiler is listed as a standard with UL, and c-UL, and it can be tuned to meet FM and/or ASME-CSD1 requirements at the customer’s request.
Page 12 For more information on how the various rules affect boiler selection and operation, you may want to contact your local MIURA authorized representative or the engineering firm designing your boiler installation. Here are some essential...
Page 13 National Regulatory Organizations In order to obtain assistance in the identification of, and compliance with, codes and regulations, we recommend contacting your actual insurance provider as well as utility companies. A partial list of agencies having jurisdiction over boiler installation and operation is given below. This list is comprehensive, but by no means all-inclusive.
Page 14 ESSENTIAL BOILER WATER TREATMENT...
Page 15 For this reason, the installation of water treatment equipment and thorough control of water quality are critical. At MIURA, we believe that the above flowchart sets forth a standard for water treatment system.
Page 16 Main feed water valve Boiler Makeup Tank Two different varieties of Once-through Steam Boiler boiler makeup tank are Water delivered to the inside of Main available – namely, the water the tubes is heated by the power tank and the deaerator tank. combustion of fuel using a burner.
Page 17 System integrated water softeners One of the most common causes of boiler damage is scale. MIURA offers a solution through our System Integrated Water Softener - MW series; featuring split flow regeneration and MIURA Online Maintenance.
Page 18 Daily operation MIURA has no warranties to cover damage due to improper water treatment and failure to maintain the specifications listed below. MIURA MAKE-UP WATER MAINTENANCE CHECK To keep your MIURA boilers running in optimum condition, be sure to check the following daily: a) CHEMICAL FEED PUMP i.
Page 19 END USER RESPONSABILITIES: 1. Water test must be performed every day. Miura recommends to record the results from the daily test. Refer to your contract terms and conditions or contact your Miura representative for guidelines about daily water test and log.
Page 20 COMPONENT NAMES & FUNCTIONS...
Page 21 EXN-300SGOF Main steam outlet Used to provide steam to the load application. (Control/connection of steam to the load application) Pressure gauge Displays the level of steam pressure within the pressure vessel. Control panel Provides switches and display devices required for operating the boiler. Blower Delivers the air required for combustion into the...
Page 22 Burner Emergency stop button In an emergency, push this button to stop combustion Oil pressure gauge Indicates the fuel supply pressure to the burner. Oil pump Used to feed fuel.
Page 23 NOx emissions. For more details, please refer to SECTION 4: BASIC PRECAUTIONS. DANGER: Change from standard boiler to FGR boiler must be properly set up by a Miura representative.
Page 24 Control box Contains electrical parts used to control the boiler. Fuel selector switch Switches between gas/oil combustions.
Page 25 EX 07 series BOILER SECTION VIEW...
Page 26 12 series BOILER SECTION VIEW...
Page 27 BASIC PRECAUTIONS 4.1 Items to Check before Use ............27 4.2 Clothing Requirements for Safe Operation ......28 4.3 Warning Labels ................ 28 4.4 Dealing with Abnormal Conditions .......... 29 4.5 Precautions for Boiler Usage ........... 30 4.6 Fire Extinguishers & First Aid Boxes ........30 4.7 Prohibition of Unapproved Modification ........
Page 28 SECTION 5: PRE- installed, please arrange OPERATION for trial operation to be INSPECTION. conducted by MIURA maintenance personnel or Miura representative. Ensure that you use the boiler correctly. Do not attempt to operate or service the steam...
Page 29 Warning labels have been Any peeling or torn warning applied to indicate labels must be replaced. locations where hazards Please contact a MIURA exist. sales office or your local For more details regarding dealer regarding this and these locations, refer to...
Page 30 Failure to observe this precaution may result in explosion. Responding to abnormal conditions Always follow the instructions given by MIURA sales offices or Miura representative when abnormal conditions arise. In addition, discontinue to use the boiler until the abnormality has been removed.
Page 31 Precautions for Boiler Usage Always use the recommended fuel. No ignition source near boiler fuel or combustible Usage of any fuels other materials. than those recommended Boiler fuel and highly could result in the boiler flammable material can explosion. easily be ignited in the presence of a ignition source.
Page 32 Always confer with MIURA maintenance personnel before carrying out any such modification work. Note that MIURA will not be responsible for the consequences of unapproved modification. When Reselling or Relocating...
Page 33 PRE-OPERATION INSPECTION Refer to the “INSTALLATION MANUAL” for more details.
Page 34 WARNING Before operating the boiler, please check each of the installation points below. Do not use the boiler if it has not been correctly installed. Failure to follow this precaution may have serious consequences. Boiler Room Installation of ventilation equipment (or air vents) Confirm the boiler room is installed with ventilation fan or air supply and exhaust vents.
Page 35 Electrical Work Fuse or Circuit breaker Fuse or circuit breaker Failure to observe warnings relating to electrical work can lead to electric shock. Dedicated power supply for the boiler Confirm that the boiler has a dedicated supply capacity of main power and a dedicated breaker installed on the power-supply line.
Page 36 WARNING Before operating the boiler, please check each of the installation points. Do not use the boiler if it has not been correctly installed. Failure to follow this precaution may have serious consequences. Safety-Valve Discharge Piping End of discharge piping to be pointing in a safe direction Confirm the end of the safety valve’s Safety discharge piping is pointed in a direction that...
Page 37 USING BOILER CONTROLS 6.1 Using the Fuel Selector Switch ..........37 6.2 Names & Functions of Control Panel Items ......37 6.3 Working with the Display ............38 6.3.1 Display Content ............. 38 6.3.2 Using the Display (“DATA” & “SELECT”) ...... 39 6.3.3 Display Content for Heat Management Mode ....
Page 38 Using the Fuel Selector Switch Using the fuel selector switch, you can specify whether the boiler is to burn gas (gas-fired) or oil (oil-fired) as fuel for combustion. The fuel selector switch is located in the control box (refer to page 22). Note that the switch is only active when the “OPERATION”...
Page 39 Working with the Display 6.3.1 Display Content Operation Status & Parameters (Monitoring mode) NOTE Typical display: Upper row of display: If switches are not operated for a period of time, the Boiler’s operation mode system will automatically switch over to Monitoring mode and the display will show steam-pressure data.
Page 40 Purpose of Each Mode In this mode, data required for boiler control such as the steam pressure and Monitoring Mode exhaust gas temperature is presented. Refer to page 37 for more details regarding the actual display content. In this mode, data required for heat management such as the boiler efficiency and Heat Management Mode fuel consumption is presented.
Page 41 The Segment Start Time can be set in intervals of one hour. (The default setting is 00:00.) The value displayed corresponds to the interval from If you need to change this setting, please arrange for MIURA 00:00 to 02:00. maintenance personnel to do so. *: Data is updated every hour.
Page 42 6.3.4 Display Content for User Setting Mode In User Setting mode, you can set steam pressure levels and the current time (YY/MM/DD HH:MM). NOTE The current time is used by a range of different processes working with control data, and for this reason, you must set it correctly.
Page 43 (i.e., for high or low fire) to 20psi below the Safety valve setting or higher. If you wish to operate the boiler in this elevated range, please consult with a MIURA sales office or Miura representative. When you have finished changing settings, press DATA and hold the “DATA”...
Page 44 Setting the System Date & Time NOTE If no switches are operated for a certain period of time, the system will automatically switch over to Monitoring mode and the display will show steam-pressure data. (This action does not cause any settings to change.) Press the “DATA”...
Page 45 6.3.5 Display Content for Fault History Mode Using Fault History mode, you can review the content of recent alarms and caution, together with the corresponding times of occurrence. Specifically, you can use the “DATA” button to display the seven most recent alarms and cautions. For more details regarding this mode’s display items, refer to Section 10.3: Action to be Taken before Ordering Repairs.
Page 46 Confirming Gauge Readings Steam Pressure Display The steam pressure gauge measures the pressure of steam inside the boiler. The measured value is presented in both digital and analog format. The analog display is in units of ** PSI. The digital display has a resolution of 1 PSI. Analog display NOTE H I G H F I R E...
Page 47 Operating the Main Steam Valve WARNING The main steam valve is located high on the boiler with limited space available for footing. It is important to wear suitable protective clothing (i.e., long sleeves and trousers, safety footwear, a helmet, gloves) whenever opening or closing this valve.
Page 48 PREPARING FOR STARTUP...
Page 49 The following checks must be carried out before starting the boiler. (Gas-fired Combustion) Turn on the breaker for the boiler’s main power. WARNING Do not carry out this procedure with wet hands. Failure to observe this precaution may lead to electric shock and have other undesirable consequences.
Page 50 As described in Section 9.5.2: Checking the Water Softness, confirm that the feed water has been correctly softened. Confirm that the main steam valve is closed. If this is not the case, apply the method described in Section 6.5: Operating the Main Steam Valve Close and close the valve.
Page 51 (Oil-fired Combustion) Turn on the breaker for the boiler’s main power. WARNING Do not carry out this procedure with wet hands. Failure to observe this precaution may lead to electric shock and have other undesirable consequences. WARNING All cover plates, enclosures, and guards must be in place at all times, except during maintenance and servicing.
Page 52 Confirm that there is no leakage from the fuel piping. As described in Section 9.5.2: Checking the Water Softness, confirm that the feed water has been correctly softened. Confirm that the main steam valve is closed. If this is not the case, apply the method described in Section 6.5: Operating the Main Steam Valve and close the valve.
Page 53 OPERATING THE STEAM BOILER 8.1 Boiler Startup for Gas-fired Combustion ........ 53 8.2 Boiler Startup for Oil-fired Combustion........54 8.3 Inspection during Operation ............ 55 8.3 Boiler Shutdown ..............56...
Page 54 WARNING This is a shop-tested, assembled and fully-packaged boiler. Each unit and assembly has been carefully adjusted at the factory. It is very important not to make any adjustments without first consulting a MIURA sales office or Miura representative.. Ensure that the fuel selector switch (refer to page 22) is set to run the boiler on gas.
Page 55 It is very important, therefore, that you do not make any adjustments without first consulting a MIURA sales office or Miura representative. Ensure that the fuel selector switch (refer to page 22) is set to run the boiler on oil.
Page 56 Always follow the instructions given by MIURA sales offices or Miura representative whenever strange or abnormal conditions arise. In addition, discontinue use of the boiler until the abnormality has been removed.
Page 57 Boiler Shutdown Turn off the “OPERATION” switch. Confirm that the Status lamp turns off. Apply the method described in Section 6.5: Operating the Main Steam Valve and close the valve. Close the main feed water valve, the main gas valve and oil tanks’ main fuel valve. Close [Gas-fired combustion] Main gas valve...
Page 58 INSPECTION & MAINTENANCE 9.1 Preparing for Possible Freezing ..........58 9.1.1 Bleeding Water to Protect against Freezing ....58 9.2 Maintenance during Extended Inactivity ......... 59 9.3 Regular Maintenance Tasks and Timing ......... 60 9.4 Spare Parts ................62 9.5 Overview of Inspection ............63 9.5.1 Checking the Chemical Feeder ........
Page 59 If you require more information regarding such countermeasures, please do not hesitate to contact MIURA sales office or Miura representative. 9.1.1 Bleeding Water to Protect against Freezing Bleeding Water from the Pressure Vessel Shut down the boiler as described in Section 8.4:...
Page 60 Mounting configurations for the feed water pump’s water-bleed and air-bleed valves vary slightly for each boiler model. Before starting this work, confirm the correct mode of use with MIURA maintenance personnel. Close the feed-water stop valve and the main feed- Close water valve.
Page 61 Conduct an internal inspection of the pressure vessel, and clean the water level probes. Install the inspection port plugs and probes and operate the boiler normally. If the boiler is to be inactive for a protracted period of time, please contact a MIURA sales office or Miura representative.
Page 62 Oil Pressure Check Page 66 Combustion Condition Check Page 67 Low Water Level Interlock Test Page 69 Blowdown Page 67 Feed-water Strainer Cleaning Page 70 Feed-water Tank Interior Cleaning Page 72 Water Quality Check Page 16 Cleaning UV sensor Protective Glass Page 74 Oil Strainer Cleaning Page 75...
Page 63 Spare Parts Please contact Miura service office in your area or your Miura representative for replacement parts, or the list of replacement parts.
Page 64 Overview of Inspection 9.5.1 Checking the Chemical Feeder NOTE A chemical feeder (not included) is a critical component of the overall water management system for a boiler. Be sure to read and understand your chemical feeder’s operation manual thoroughly, and to operate the feeder in a strict accordance with the instructions given.
Page 65 9.5.2 Checking the Water Softness NOTE A water softener (not included) is a critical component of overall water management for a boiler. Be sure to read and understand your water softener’s operation manual thoroughly, and to operate the softener in strict accordance with the instructions given. You should also ensure that the water softener’s operation manual is stored together with this operation manual in a location that can be readily accessed by persons working on the boiler system.
Page 66 WARNING If the steam pressure is not within the normal range, immediately shutdown the boiler and contact a MIURA sales office or your local dealer for further instruction. Continued use of the boiler with abnormal steam pressure levels may result in boiler damage, which in turn could lead to injury.
Page 67 WARNING If the oil pressure is not within the normal range, immediately shutdown the boiler and contact a MIURA sales office or Miura representative for further instruction. Continued use of the boiler with abnormal oil pressure levels may result in boiler damage, which in turn could lead to injury.
Page 68 Although the Status lamp will turn off and the display’s blowdown request will be cleared when the “DATA” button is pressed, the “B” indicator will not. Blowdown must always be carried out in strict accordance with instructions given by MIURA maintenance personnel.
Page 69 Turn off the “OPERATION” switch. Confirm that the Status lamp turns off. (The main steam valve should also be closed at this time.) WARNING Blowdown must not be carried out if the pressure reading on the steam pressure gauge is above 30 PSI. If this precaution were to be ignored, steam and hot water could be violently discharged from the boiler, which in turn could cause burns and other injuries.
Page 70 Turn on the “OPERATION” switch. Confirm that the Status lamp lights in red. If the Status lamp flashes in green at this time, it will indicate that a water level probe error has occurred. In such a case, refer to Section 10.3.2: Inspecting Water Level Probes.
Page 71 9.5.8 Cleaning the Feed-water Strainer WARNING Water in supply lines for boilers connecting to a deaerator or hot water tank is extremely hot. For this reason, you should wait until the boiler’s water supply lines have sufficiently cooled down (at least two hours after boiler shutdown) before performing this work.
Page 72 If rust cannot easily be removed from gaps or significant deformation has occurred, the filter must be replaced. In such a case, please contact a MIURA sales office or Miura representative. Filter Brush Return the filter to its original position inside the feed water strainer.
Page 73 9.5.9 Cleaning the Feed-water Tank WARNING Water in supply lines for boilers connecting to a deaerator or hot water tank is extremely hot. For this reason, you should wait until the tank water has sufficiently cooled down (at least two hours after boiler shutdown) before performing this work.
Page 74 The safety valve’s release pressure has been adjusted to match the indicated value. Despite the fact that a small amount of deviation may occur, you must not tamper with the pressure setting. If you suspect leakage or some other abnormality, please contact a MIURA sales office or Miura representative.
Page 75 Miura boilers have the function though, the hardness checking by Colormetry and manual water sampling still have to be done by all Miura customers. (Since there are several scaling patterns depending on the firing ratio, or water quality, scale monitor doesn’t always detect the thickest scale. It doesn’t guarantee the scale protection for all cases of scaling.)
Page 76 9.5.12 Cleaning the Oil Strainer Main fuel valve Close the oil tank’s main fuel valve. Close Remove the oil strainer’s cap and clean the filter element. NOTE Place a suitable container underneath the oil Oil strainer strainer in order to prevent the spillage of oil. Return the filter to its original position inside the oil strainer and replace the cap.
Page 77 9.5.13 Cleaning the Y-type Oil Strainer WARNING As all parts of the boiler remain at a high temperature for some time after shutdown, you should allow sufficient time for cooling down (at least two hours after boiler shutdown) before performing this work. Failure to observe this precaution can result in burns and other injuries.
Page 78 If rust cannot easily be removed from gaps or significant deformation has occurred, the filter must be replaced. In such a case, please contact a MIURA sales office or Miura representative. Return the filter to its original position inside the Y- type oil strainer.
Page 79 WARNING Before attempting to clean the air filter, be sure to always receive instruction from MIURA maintenance personnel and to fully familiarize yourself with the process involved. Main power 1. Turn off the breaker for the boiler’s main power.
Page 80 NOTE Mode of use, the fuel used, and other similar factors will affect the frequency with which burner cleaning must be performed. Accordingly, you must follow the instruction of MIURA maintenance personnel regarding the required cleaning frequency. Turn off the breaker for the boiler’s main power.
Page 81 If any defect is identified, the gas spread plate must be replaced. In such a case, please contact a MIURA sales office or Miura representative. Pilot Burner Use workshop rags to wipe the soot from the nozzle tips.
Page 82 EX-100,EXH-100 Confirm that nozzle tip and ignition rod dimensions are within the specified Ignition rod ranges. If any external dimensions are out of specification, please contact a MIURA sales office or Miura representative. NOTE Dimensions that are out of specification can result in misfire.
Page 83 10 BREAKDOWN & COUNTERMEASURES 10.1 Alarm and Red Status Lamp – Alarm ........83 10.2 Yellow Status Lamp – Caution ..........84 10.3 Action to be Taken before Ordering Repairs ......85 10.3.1 Bleeding Air from the Feed Water Pump ....88 10.3.2 Inspecting Water Level Probes ........
Page 84 Press the “DATA” button to stop the alarm. NOTE In the case of certain alarms, the display will request action that must be carried out by MIURA maintenance personnel. Refer to Section 10.3: Action to be Taken before Ordering Repairs for details regarding the correct action to be taken in response to an alarm.
Page 85 NOTE In the case of certain caution, the display will request action that must be carried out by MIURA maintenance personnel. Refer to Section 10.3: Action to be Taken before Ordering Repairs for details regarding the correct action to be taken in response to a caution.
Page 86 Section 8.4: Boiler Shutdown and contact a MIURA sales office or Miura representative for further instruction. No work other than that indicated below is to be carried out. Failure to observe this precaution may result in injury.
Page 87 A problem has occurred with the control system. immediately shut down the boiler as described in Section 8.3: Boiler CONTROL ALARM 3 Shutdown and contact a MIURA sales office or Miura representative for further instruction. A problem has occurred with the combustion SAFETY STOP 1 control system.
Page 88 Clean the strainer and/or close the WATER CHECK 1 The strainer is blocked or the blowdown valve is open. blowdown valve. Contact a MIURA sales office or Miura WATER CHECK 2 The check valve is damaged. representative for assistance. WATER CHECK 4 There is poor insulation in the water level probe.
Page 89 10.3.1 Bleeding Air from the Feed Water Pump WARNING Water in supply lines for boilers connecting to a deaerator or hot water tank is extremely hot. For this reason, you should wait until the boiler’s water supply lines have sufficiently cooled down (at least two hours after boiler shutdown) before performing this work.
Page 90 Startup the boiler in accordance with the prescribed manual procedure. If the same alarm reoccurs, immediately shutdown the boiler and contact a MIURA sales office or Miura representative for further instruction. NOTE Please check the pressure transducer and BL11 Microcomputer settings as well as the control pressure switch for any malfunction or incorrect setting.
Page 91 Alarm and Red Status Lamp – Alarm. Startup the boiler in accordance with the prescribed manual procedure. If the same alarm reoccurs, immediately shutdown the boiler and contact a MIURA sales office or Miura representative for further instruction. NOTE Short-circuiting or prolonged overloading of the blower motor will result in boiler shutdown.
Page 92 10.3.5 Bleeding Air from the Oil Pump (for oil-fired combustion) Carry out steps (1) to (3) from Section 10.1: Alarm and Red Status Lamp – Alarm. Open Open the oil tank’s main fuel valve. Place the ends of the plastic tubes attached to both Oil tank’s main of the oil pump’s oil air-bleed valves (#1 and #2) fuel valve...
Page 93 Rotate the “SELECT” switch to select “START” for oil air bleeding. When you have made the required selection, press DATA and hold the “DATA” button for two seconds to leave User Setting mode. Settings are updated as you leave this mode. Failure to carry out this action will result in the original settings remaining unchanged.
Page 94 Turn off the “OPERATION” switch. The settings made to enable oil air bleed will be reset when you turn off the “OPERATION” switch. If oil air-bleed is to be carried out once again, repeat steps (1) through (13). Close oil air-bleed valve #2.
Page 95 11 SPECIFICATIONS...
Page 96 Specifications and Emissions Please refer to separate boiler specifications sheet for general specifications and emissions.
Page 97 12 APPENDIX Description of Functionality Combustion Control Purging Purging is the process whereby the blower operates for a certain period of time prior to ignition in order to discharge any residual gas from the combustion chamber. Specifically, this is referred to as a “pre-purge”. Meanwhile, the term “post-purge”...
Page 98 The fitting of an automatic bottom blowdown valve makes automatic bottom blowdown control possible, thus reducing the work required for blowdown-related activities. Automatic control of the feed-water valve opening and closing is made possible by the fitting of an automatic feed-water shutoff valve. Safety Devices If any of the following abnormalities should occur, the system will lockout combustion and activate an alarm.
Page 99 The display will show the following whenever an alarm is activated in response to an abnormality or whenever a caution is issued. (1) Details of the abnormality (2) Instructions for required action Self-checking The control system hardware constantly monitors its own operation, and it will immediately shutdown operation when an abnormality occurs.
Page 100 The boiler can be fitted with a communications port as an option, allowing remote communication with external devices. Using this functionality, online maintenance can be carried out from a MIURA technical center and the boiler can be remotely monitored. Communicated information...

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