JP2001084021A - Preventative maintenance system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a cost for maintenance by setting the cumulative working time of exchanging parts as a new life of parts at the time of parts exchanging work due to a fault so as to set the exchanging time of maintenance parts to be an optimum time. SOLUTION: A parts life setting means is provided with a maintenance work registering part 21 and has a parts life setting part 22 as a part of it. At the time of executing maintenance work such as exchange of parts at the time of regular maintenance or occurrence of a fault, a maintenance work registering part 21 registers the contents of the maintenance work in a maintenance parts information list 202. Next, whether the registered maintenance work is regular maintenance work or not is judged. When it is not, it is judged to be work at the time of occurrence of a fault. Then, the cumulative working time of an exchanged part from the list 202 and setting is changed as the new cumulative working time of a part detailed list 201. By processing like this, a parts life time can be made a working time based on the result of the parts and the exchanging time of the maintenance parts can be set to be optimum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a preventive maintenance system for a production facility, and more particularly to a system for calculating the cumulative operating time of parts based on data of factors that most affect the life of the parts. At the time of replacement work, the cumulative operating time of replacement parts is set as a new part life.

[0002]

2. Description of the Related Art Conventionally, preventive maintenance systems for production equipment
Make a database of maintenance work history and maintenance parts management, and when a failure occurs, detect the same failure from the database,
Quickly respond to failures by referring to the corrective action and the storage location of the necessary maintenance parts, and based on the life time of the maintenance parts, the operation time and operation status of the equipment, the operation schedule of the equipment according to the production plan, etc. The maintenance work plan is created by calculating the replacement time of maintenance parts.

[0003]

However, the conventional preventive maintenance system for production equipment has the following problems.

[0004] (1) Since the component life is assumed to be a value specified by the manufacturer or a predicted value based on past component replacement history, the accuracy of component replacement time is low, and the maintenance cost is largely estimated.

[0005] (2) When an order for maintenance parts is forgotten and equipment failure occurs, there is no stock of the failed parts.
Parts could not be replaced, causing equipment to be shut down for a long time, and maintenance parts were forgotten to be replaced, causing equipment failure and reducing the operating rate.

(3) When an equipment failure occurs, there are a plurality of causes for the failure phenomenon, and it sometimes takes a very long time to identify the cause of the failure and to find a countermeasure.

[0007] (4) When ordering a part, if the location of the part is known but the detailed information of the part is unknown, it is necessary to check a material such as a parts list and confirm the detailed information of the part. Was very time consuming.

(5) At the time of maintenance work, the order of disassembly / assembly of parts is not known, and a manual must be prepared, which sometimes takes time.

(6) In the parts inventory management processing for managing the inventory of maintenance parts of the preventive maintenance system, when the operator performs the part delivery processing, it is determined that the inventory quantity of the delivered parts has become smaller than a predetermined inventory quantity. When it was confirmed, parts were ordered in the order request system that was not linked to the preventive maintenance system. Therefore, it sometimes takes time to input data of the ordering work, or the ordering work is sometimes forgotten.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has been developed in a preventive maintenance system for a production facility, based on data of a factor that most affects the life of a part. Is calculated, and the cumulative operating time of the replacement part is set as a new component life when replacing the part due to a failure. As a result, the component life becomes an accurate value based on the results, so that the maintenance component replacement time can be set to an optimal time, and the maintenance cost can be reduced.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (1) In a preventive maintenance system for production equipment, a component life setting means for setting a cumulative operating time of a component as a component life when replacing a maintenance component due to a failure when replacing a maintenance component. As a result, the component life becomes an accurate value based on the results, so that the maintenance component replacement time can be set to an optimal time, and the maintenance cost can be reduced.

(2) In the preventive maintenance system of the production equipment, the setting of the actual operation time and the alarm time of the maintenance part information can be switched to the setting according to the regular maintenance and the actual result, and the actual operation time and the alarm time can be changed. At the time of setting, the data of the item that most affects component deterioration and failure occurrence is selected, and the component operating time calculation means that converts it to time is provided, so that the component operating time and alarm time are calculated from the most suitable data for each component It is possible to set the parts replacement time to the optimum time.

(3) In the preventive maintenance system of the production equipment, alarm notification means for automatically notifying at the predetermined time of notification of parts out of stock and notification of forgetting to replace parts is provided, so that ordering work and part replacing work are forgotten. Can be reduced, and the work rate of preventive maintenance management and the operation rate of equipment can be improved.

(4) In the preventive maintenance system of the production equipment, by providing at least trouble tracking information display means for summing up trouble history information storing at least the trouble contents and the treatment contents for each trouble content, and displaying the trouble history information in order of occurrence frequency. Even if the user is not an expert, it is easy to grasp the failure-related, and it is possible to quickly respond to the failure.

(5) In the preventive maintenance system described in (4), the repair state indicating whether the repair of the failure can be repaired in-house or the repair by the manufacturer is required, and the degree of the failure is indicated by heavy, medium, or light. By displaying the failure level in correspondence with the failure content, the level of the failure can be known even by a non-expert, and the time required for the failure, such as an investigation time for determination, can be reduced.

(6) In a preventive maintenance system for production equipment, equipment, units constituting the equipment, parts constituting the units, parts drawings of the parts, parts information such as dimensions, materials, masses, manufacturer names, etc. are arranged in a tree form. By providing equipment configuration information display means to display, when detailed information of parts is unknown,
Detailed information can be confirmed in a short time.

(7) In the preventive maintenance system described in (6), the order for assembling the unit or the order for disassembling the unit is displayed in the display of the parts constituting the unit, so that the skilled worker can display the order. Maintenance work for disassembly and assembly can be performed without the need, and the time for maintenance work can be reduced.

(8) In the preventive maintenance system of the production equipment, when the stock number of the parts processed in the part release processing is smaller than the predetermined stock number, the parts automatic ordering process for automatically executing the order processing to the order request system. By providing the means, it is possible to prevent an order from being forgotten and an order from being mistaken.

[0019]

FIG. 1 is a block diagram showing the configuration of the present invention. In the figure, reference numeral 1 denotes a preventive maintenance system for production equipment.

In the preventive maintenance system 1 for production equipment, when replacing a maintenance part, if the maintenance part is replaced due to a failure, a part life setting means 2 for setting the cumulative operating time of the part as the life of the part; The setting of the actual operation time and alarm time can be switched to the setting based on the regular maintenance and the actual time.When setting the actual operation time and alarm time, select the data of the item that most affects the parts deterioration and failure occurrence. , Part operating time calculating means 3 for converting to time
Alarm notification means 4 for automatically notifying a notification of parts out of stock and a notification of forgetting to replace parts at a predetermined time; and collecting failure history information for storing at least the details of failures and the contents of the measures for each failure content. The repair status is displayed in order of frequency and indicates whether the repair of the failure can be repaired in-house or requires repair by the manufacturer, and the failure level indicating the severity of the failure as heavy, medium or light according to the failure content Trouble tracking information display means 5 to be displayed, equipment, units constituting the equipment, parts forming the unit, parts drawings, dimensions, materials, mass,
Equipment configuration information display means 6 for displaying part information such as a maker name in a tree shape and displaying the order for assembling the units or the order for disassembling the units in the display of the parts constituting the units; An automatic parts ordering means 7 is provided for automatically executing an ordering process to the ordering request system when the stock number of the parts subjected to the stocking process in the stocking process is smaller than a predetermined stock number.

FIG. 2 is a block diagram showing the configuration of one embodiment of the component life setting means. In the figure, reference numeral 21 denotes a maintenance work registration unit for registering the contents of maintenance work when performing maintenance work such as periodic maintenance or parts replacement when a failure occurs. Reference numeral 22 denotes a part of the maintenance work registration unit. In the case of replacement, a component life setting unit that sets the cumulative operation time of the component as the component life, 201 is a component detail list in which the life time and operation time of the component are registered, 202 is the name of the facility in which the component is used, This is a maintenance parts information list in which names, operating hours, and the like are stored.

The operation of the component life setting means will be described with reference to FIGS. FIG. 3 is a processing flowchart of one embodiment of the maintenance work registration unit, and FIG. 4 is a configuration diagram of one embodiment of the parts detail list and the maintenance parts information list.

The parts details list 201 shown in FIG.
Aggregation mode that indicates the mode for selecting the data of the item that most affects component deterioration or failure when setting the component life time, actual operation time of the component, and alarm time, and the time conversion coefficient that indicates the coefficient for converting the selected data to time , An average operation time and an average alarm time of parts in the regular maintenance.

The maintenance parts information list 202 shown in FIG.
Is the part name, part model, equipment name where the part is used,
It consists of the process name, the date of the last replacement of parts, the cumulative operation time of parts and the cumulative alarm time.

The operation will be described below with reference to the flow chart of FIG. The component life setting unit is a part of the maintenance work registration unit, and also shows the maintenance work registration processing.

Step S301: When performing maintenance work such as periodic maintenance or parts replacement at the time of occurrence of a failure, the contents of the maintenance work are registered in the maintenance parts information list.

Step S302: It is determined whether the maintenance work registered in step S301 is a regular maintenance work. If it is a regular maintenance operation, the process ends. If it is not a regular maintenance operation, the process proceeds to step S303.

Step S303: The cumulative operating time of the replaced part is extracted from the maintenance parts information list, and is set as the part life time of the parts detailed list.

Step S304: Clear the accumulated operation time and accumulated alarm time in the maintenance parts information list. Then, the process ends.

By such a process, the life of the component can be set to the operating time based on the performance of the component, and the replacement time of the maintenance component can be set to an optimum time.

FIG. 5 is a block diagram showing the construction of one embodiment of the component operation time calculating means. In the figure, reference numeral 51 changes the setting of the actual operation time and the alarm time of the maintenance part information to the setting based on the regular maintenance and the actual result, and most affects the component deterioration and the occurrence of the failure when the actual operation time and the alarm time are set. A part operation time calculation unit that selects item data and converts the time, 502 is an equipment operation result total list,
An equipment operation monitoring system that monitors the operation status of the equipment is a collection of daily operation results (operation time, number of productions, number of shots, alarm time, number of alarms, number of mounting failures, and the like). Further, 201 and 202 correspond to 201 and 2 in FIG.
Same as 02.

FIG. 6 shows a processing flowchart of one embodiment of the component operation time calculation unit. This process is started before the start of production to calculate the cumulative operation time and the alarm time for each part, and refers to the operation results of the previous day which is output to the equipment operation result total list. It is added to the cumulative alarm time. Hereinafter, the operation will be described according to the flow.

Step S601: maintenance parts information list,
Read the parts details list.

Step S602: The equipment operation result list created by the equipment operation monitoring system is read.

Step S603: The head address of the maintenance parts information list is set as a pointer.

Step S604: The totaling mode of the part indicated by the pointer is obtained from the part detail list.

Step S605: It is determined whether the counting mode is "0". If "0", the process proceeds to step S606, and "
If not “0”, the process proceeds to step S608.

Step S606: The past operating hours are totaled, and the daily average is used as the average operating time of the parts detailed list, and is added to the cumulative operating time of the maintenance parts information list. By this processing, the average operating time of the parts in the periodic maintenance is added to the cumulative operating time.

Step S607: The alarm times in the past are totaled, and the daily average is set as the average alarm time in the parts detailed list, and added to the cumulative alarm time in the maintenance parts information list. By this processing, the average alarm time of the part in the regular maintenance is added to the cumulative alarm time. Then, the process proceeds to step S610.

Step S608: The operation data corresponding to the total mode is obtained from the equipment operation result total list, multiplied by the time conversion coefficient, and the calculated value is added to the cumulative operation time of the maintenance parts information list.

For example, if the totaling mode is 1, the operation result data is “operating time” and the time coefficient is “1”. If the totaling mode is 2, the operation result data is “production quantity” and the time coefficient is “0.15”. If the totaling mode is 3, the operation result data is set to “shot number” and the time coefficient is set to “0.02”.

Step S609: The alarm data corresponding to the tally mode is obtained from the equipment operation result tally list, multiplied by the time conversion coefficient, and the calculated value is added to the cumulative alarm time in the maintenance parts information list.

For example, if the tabulation mode is 1, the alarm data is "alarm time" and the time coefficient is "1". If the tabulation mode is 2, the alarm data is "alarm count" and the time coefficient is "0.15". If the mode is 3, the alarm data is set to "number of mounting failures" and the time coefficient is set to "0.02".

Step S610: It is determined whether the pointer is the last address of the maintenance parts information list. If it is the last address, the process ends. If it is not the last address, the process proceeds to step S611.

Step S611: The pointer is updated.
Then, the process returns to step S604.

By such processing, the operation time and alarm time of the component can be calculated from the data most suitable for each component, and the component replacement time can be set to the optimal time.

FIG. 7 is a block diagram showing the configuration of an embodiment of the alarm notification means. In the figure, reference numeral 71 denotes an alarm notification unit for displaying a notification of out-of-stock parts and a notice of forgetting to replace parts on the display device 72, and 701 denotes a part name, a part model, a stock quantity, a necessary stock quantity indicating a minimum quantity necessary for stock, and the like. Is a parts inventory list composed of In addition, 202 is 202 in FIG.
The same as above, but here, the number of days that have elapsed since the last replacement date, the number of days remaining until the date of replacement based on the life of the part, and the number of days remaining until the replacement, and the remaining time available for replacement are shown. I have.

The operation of the alarm notification means will be described with reference to FIGS. FIG. 8 is a processing flowchart of an embodiment of the alarm notification unit, and FIG. 9 is a display screen diagram of the embodiment of the alarm notification unit.

Hereinafter, the operation will be described in accordance with the flow of FIG. It is assumed that this alarm notification unit is activated every day at a predetermined time by a main control unit of the preventive maintenance system not described.

Step S801: The parts stock list is read, and the parts whose stock quantity is smaller than the necessary stock quantity are extracted.

Step S802: It is determined in the process of step S801 whether an item whose stock quantity is smaller than the necessary stock quantity has been extracted. If extracted, the process proceeds to step S803. If not extracted, the process proceeds to step S804.

Step S803: The extracted list is registered in the alarm notification message. And step S
Proceed to 805.

Step S804: A message “No stock shortage” is registered in the alarm notification message.

Step S805: The maintenance parts information list is read, and the parts with a remaining remaining spare days of minus are extracted.

Step S806: In the process of step S805, it is determined whether or not one having a negative remaining exchange allowance is extracted. If extracted, the process proceeds to step S807. If not extracted, the process proceeds to step S808.

Step S807: The extracted list is additionally registered in the alarm notification message. Then, the process proceeds to step S809.

Step S808: A message "Nothing needs replacement" is additionally registered in the alarm notification message.

Step S809: An alarm notification message is displayed on the display device. Then, the process ends.

A display example of this processing is shown on a display screen 91 of the alarm notification in FIG. Further, in this example, the parts whose stock numbers are smaller than the necessary stock numbers, the part names AAAX and AABX are extracted from the parts stock list 701 of FIG. 7, and the parts whose remaining spare days are minus from the maintenance part information list 202 of FIG. 7 are extracted. AAAX and AABX are extracted and displayed as an alarm notification message.

By such processing, forgetting of ordering work and forgetting of part replacement work can be reduced, and the work of preventive maintenance management and the operation rate of equipment can be improved.

FIG. 10 is a block diagram showing the configuration of an embodiment of the trouble tracking information display means. In the figure, reference numeral 101 denotes failure history information that stores failure content and its action content for each failure content, and displays them in order of occurrence frequency, and determines whether repair of the failure is possible in-house or requires repair by a manufacturer. A trouble tracking information display unit 72 for displaying the repair state shown and the trouble level indicating the degree of trouble as heavy, medium or light in accordance with the trouble content is a display device.

A failure history list 1001 stores a failure occurrence date, an error code, a failure phenomenon, a cause, a countermeasure, etc., 1002 a phenomenon corresponding to the error code,
A repair state indicating whether the cause, countermeasure, and repair of the fault can be repaired in-house or whether a repair by the manufacturer is necessary, a fault level indicating the degree of the fault as heavy, medium, or light are stored.

Reference numeral 1003 denotes a trouble history total list temporarily created during the processing of the trouble tracking information display unit.
The same failure contents (phenomena, causes, and countermeasures) are totaled from the failure history list 1001 and rearranged in descending order of occurrence frequency.

The operation of the trouble tracking information display means will be described with reference to FIGS. FIG. 11 is a processing flowchart of one embodiment of the trouble tracking information display unit, and FIG. 12 is a display screen diagram of one embodiment of the trouble tracking information display unit.

Hereinafter, the operation will be described in accordance with the flow of FIG.

Step S1101: The failure history list is read, and a failure history totalization list for each failure content (phenomenon, cause, action) is generated.

Step S1102: The failure history total list is rearranged in descending order of occurrence frequency.

Step S1103: The data of the repair form and the failure level in the failure treatment list are added to the failure history total list in association with the failure contents.

Step S1104: The trouble history totalization list is displayed on the display device, and the operator is requested to input (select) a phenomenon to narrow down the phenomenon.

Step S1105: The contents of the failure corresponding to the phenomenon selected from the failure history total list are extracted, rearranged in the order of occurrence frequency, and displayed again on the display device. Then, the process ends. A display example of this processing is shown in a trouble tracking information display screen 1201 in FIG.

By such a process, it is possible to easily understand the fault-related information even if the user is not a skilled person, and it is possible to promptly deal with the fault.

FIG. 13 shows a block diagram of an embodiment of the equipment configuration information display means. In the figure, reference numeral 1301 denotes a unit for displaying part information such as equipment, units constituting the equipment, parts constituting the unit, part drawings, dimensions, materials, mass, and manufacturer names of the parts in a tree shape, and assembling the unit. An equipment configuration information display unit 1302 for displaying the order or the order for disassembling the unit in the display of the parts constituting the unit, an equipment configuration information database 1302 storing equipment configuration information, and a display device 72. .

The operation of the equipment configuration information display means will be described with reference to FIGS. FIG. 14 is a processing flowchart of one embodiment of the equipment configuration information display unit, and FIG. 15 is a display screen diagram of one embodiment of the equipment configuration information display unit.

Hereinafter, the operation will be described in accordance with the flow of FIG.

Step S1401: The equipment configuration information database is read, the equipment configuration information screen is displayed, and the operator is requested to input (select) the equipment name.

Step S1402: Data corresponding to the equipment name selected by the operator is extracted from the equipment configuration information database.

Step S1403: The extracted data is displayed on the display device in the form of a tree with parts information such as equipment, units, parts, assembly numbers, part drawings, dimensions, materials, mass, and manufacturer names. Then, the process ends. A display example of this processing is shown on a display screen 1501 of the equipment configuration information in FIG. In addition, although the drawing number is displayed in the parts drawing, the drawing may be displayed by selecting the drawing number.

According to such processing, when the detailed information of a part is unknown, it is possible to confirm the detailed information in a short time.

FIG. 16 is a block diagram showing the configuration of an embodiment of the automatic parts ordering means. In the figure, reference numeral 1601 denotes a parts inventory management unit for processing inventory management such as entry and exit of parts in the preventive maintenance system, and 1602 denotes a parts inventory management unit 1601.
When the stock quantity of the parts that have been dispatched in a part of the part is smaller than a predetermined inventory quantity, a parts dispatch processing unit that automatically performs order processing to the order request system 1604. 1603 is a parts dispatch processing unit 1602 and an order request system. An interface unit for controlling data communication with the communication unit 1604. Also, 701
7 is the same as 701 in FIG. 7. Here, when a shortage of stock occurs, an order quantity indicating the number of ordered parts at the time of ordering the parts and an order processing indicating whether or not the order processing of the parts has been completed are shown.

The operation of the automatic parts ordering means will be described with reference to FIGS. FIG. 17 is a processing flowchart of one embodiment of the component delivery processing unit, and FIG. 18 is a display screen diagram of one embodiment of the component delivery processing unit.

Hereinafter, the operation will be described in accordance with the flow of FIG.

Step S1701: The component delivery input screen is displayed, and the delivery process of the operator is waited. FIG. 18A shows a component delivery input screen. In this example, four component names AACX are dispatched.

Step S1702: After the delivery processing, the parts inventory list is extracted by referring to the parts inventory list, and the inventory quantity is smaller than the required inventory quantity.

Step S1703: Step S1702
In step (1), if an item whose stock quantity is smaller than the necessary stock quantity is extracted, the process proceeds to step S1704, and if not, the process ends.

Step S1704: The extracted component is
As many as the number of parts in the parts inventory list,
Place an order with the order request system.

Step S1705: The order processing column of the parts inventory list is set to "done", and a parts delivery output screen is displayed. Then, the process ends. FIG. 18B shows a component delivery output screen. In this example, the part name AACX is 4
This is an example of ordering two parts, AACX, and parts.

According to such processing, order processing can be automatically performed on the order request system, and it is possible to prevent an order from being forgotten and an order from being mistaken.

[0088]

The present invention is embodied in the form described above, and has the following effects.

The component life can be set to an accurate value based on actual results, and the maintenance component can be replaced at an optimum time. Therefore, it is possible to reduce maintenance costs.

Further, the cumulative operation time and the cumulative alarm time of the component based on the factor that most affects the component life are calculated as follows.
Can be used as data for preventive maintenance systems,
The part replacement time can be set to the optimum time.

Further, it is possible to reduce the forgetting of the ordering work and the part replacement work, and it is possible to improve the preventive maintenance management work and the operation rate of the equipment.

Further, it is possible to grasp failure-related information even without a skilled person, and it is possible to quickly respond to the failure.

Further, when the detailed information of the part is unknown, the detailed information can be confirmed in a short time, and when confirming the part and confirming the installation site again in the part ordering work, it is possible to confirm in a short time. .

In addition, maintenance (disassembly and assembly) work can be performed by non-experts, and the time for maintenance work can be reduced.

Further, by automating the part ordering operation, it is possible to prevent an order from being forgotten and an order from being mistaken.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of the present invention.

FIG. 2 is a configuration block diagram of an embodiment of a component life setting unit.

FIG. 3 is a processing flowchart of an embodiment of a maintenance work registration unit.

FIG. 4 is a configuration diagram of an embodiment of a parts detail list and a maintenance parts information list.

FIG. 5 is a configuration block diagram of one embodiment of a component operation time calculation unit;

FIG. 6 is a processing flowchart of an embodiment of a component operation time calculation unit.

FIG. 7 is a block diagram illustrating a configuration of an embodiment of an alarm notification unit.

FIG. 8 is a processing flowchart of an embodiment of an alarm notification unit.

FIG. 9 is a display screen diagram of an embodiment of an alarm notification unit.

FIG. 10 is a configuration block diagram of an embodiment of a trouble tracking information display means.

FIG. 11 is a processing flowchart of an embodiment of a failure tracking information display unit.

FIG. 12 is a display screen diagram of an embodiment of a failure tracking information display unit.

FIG. 13 is a configuration block diagram of an embodiment of equipment configuration information display means.

FIG. 14 is a processing flowchart of an embodiment of a facility configuration information display unit.

FIG. 15 is a display screen diagram of an embodiment of a facility configuration information display unit.

FIG. 16 is a configuration block diagram of an embodiment of an automatic parts ordering means.

FIG. 17 is a processing flowchart of an embodiment of a parts delivery processing unit.

FIG. 18 is a display screen diagram of an embodiment of a component delivery processing unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Preventive maintenance system 2 Parts life setting means 3 Parts operating time calculation means 4 Alarm notification means 5 Trouble tracking information display means 6 Equipment configuration information display means 7 Parts automatic ordering means

Claims (8)

[Claims] 1. A preventive maintenance system comprising a component life setting means (2) for setting the cumulative operating time of a component as the component life when the maintenance component is replaced due to a failure when the maintenance component is replaced. 2. The setting of the actual operation time and the alarm time of the maintenance part information can be switched to the setting based on the regular maintenance and the actual result. Preventive maintenance system, comprising: a part operating time calculating means (3) for selecting data of an item affecting the time and converting the data into time. 3. A preventive maintenance system comprising an alarm notifying means (4) for automatically notifying a notice of out-of-stock parts and a notice of forgetting to replace parts at a predetermined time. 4. A preventive maintenance system comprising a trouble tracking information display means (5) for summarizing at least trouble contents and trouble history information storing the trouble contents for each trouble content and displaying the trouble history information in order of occurrence frequency. 5. The preventive maintenance system according to claim 4, wherein a repair state indicating whether the repair of the failure is possible in-house or a repair by a maker is necessary, and a failure indicating the degree of the failure as heavy, medium, or light. Preventive maintenance system that displays the level and corresponding to the failure content. 6. A facility configuration information display means (6) for displaying component information such as equipment, units constituting the equipment, parts constituting the units, part drawings, dimensions, materials, mass, and manufacturer names of the parts in a tree shape. A preventive maintenance system comprising: 7. The preventive maintenance system according to claim 6, wherein the order for assembling the units or the order for disassembling the units is displayed in the display of the parts constituting the units. 8. An automatic parts ordering means (7) for automatically executing an ordering process to an ordering request system when the stock number of the parts processed in the part stocking process is smaller than a predetermined stock number.
A preventive maintenance system characterized by comprising: