167152 Issue 2 - Maintenance Manual - 第15页

PREVENTIVE MAINTENANCE Maintenance Plan Chapter Issue 2, July 16 Maintenance Manual 1.7 Accuracy Check The accuracy check should be pe rfor med af ter doing 10 cycles unmeasured, allowing the machine to settle. Mont h 1 …

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PREVENTIVE MAINTENANCE
Maintenance Plan
1.6 Maintenance Manual Chapter Issue 2, July 16
MAINTENANCE PLAN
This maintenance schedule is a recommended programme which should be
carried out on a month by month basis. It comprises two modules that are
designed to take approximately 2 hours each to complete.
Module 1 The first module comprises the following elements:
• SPC Alignment Check - used to set a benchmark each month, the hard-
ware is checked to give a snapshot of the machine condition, performance
is monitored to predict failure before it has an affect on production.
• Machine Cycle Count - machine usage is logged in the table.
• A Software Check is carried out, if a newer version is available this may
contain known defect fixes or equipment enhancements. The service
engineer can recommend an upgrade for the equipment in service. In
addition, the machine event log is checked to identify any re-occurring
errors which if not inspected/diagnosed may lead to unplanned downtime.
• A standard Monthly Maintenance Check consists of a series of mainte-
nance tasks which are performed every month.
NOTE
SPC Alignment is included in the QC Calc Software package which is an
optional measurement tool.
Module 2 The second module comprises of the Monthly Hardware Check, where one or
more hardware modules are scheduled for maintenance. Month 1 and Month 7
do not have a hardware check as a 100 cycle accuracy check is required. Over
a twelve month period all machine modules are checked and serviced at least
once.
NOTE
Some of the hardware checks relate to options that may not be fitted to your
machine.
PREVENTIVE MAINTENANCE
Maintenance Plan
Chapter Issue 2, July 16 Maintenance Manual 1.7
Accuracy Check The accuracy check should be performed after doing 10 cycles unmeasured,
allowing the machine to settle. Month 1 and Month 7 are 100 cycles, all other
months are 30 cycles as shown in the table below.
Pre and Post print measurements are taken to record the accuracy of the
alignment in CPK values and the front and rear squeegee pressures.
SPC Results Where the QC Calc for Windows program is installed, SPC data capture can
graphically show critical alignment and squeegee pressure accuracy. The
graphs in their visual form are often useful in determining the optimum mainte-
nance plan.
NOTE
Customers may opt to use the collected data in their own management system,
ASM cannot provide support for this.
Examining the
Collected Data
In addition to examining the SPC data which is displayed graphically in the QC
Calc for Windows program, engineers can extract information about machine
performance from other sources.
The SPC data collected on the machine is stored in E:\config\readings.dek.
Information can be displayed in a text editor and specific data can be examined
eg, events between dates or a specific word or phrase.
Each occurrence of an error for example, can be examined to see if the rate at
which it has occurred has increased (is it a random occurrence or an increasing
trend?).
Authorization At the end of each monthly task a Summary/Remarks form is provided to allow
the engineer to make comments or express observations. The engineer must
sign off and date the form on Page 1 so that there is a record that the schedule
has been completed.
Month Pre X Pre Y Pre Theta Post X Post Y Post Theta Front
Squeegee
Rear
Squeegee
1 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles
2 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles
3 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles
4 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles
5 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles
6 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles
7
100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles
8 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles
9 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles
10 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles
11 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles
12 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles 30 Cycles
PREVENTIVE MAINTENANCE
MONTHLY MAINTENANCE
1.8 Maintenance Manual Chapter Issue 2, July 16
MONTHLY MAINTENANCE
Each month the following tables are filled in prior to carrying out any equipment
checks. Prior to running the thirty test cycles required for the table below, run
ten cycles to allow the machine to settle.
SPC Alignment
Check
Follow details in the Accuracy Check section previously described in this
chapter. Record details for each month.
Machine Cycle
Count
Record the machine cycle count for each month.
Month Pre X Pre Y Pre Theta Post X Post Y Post Theta Front
Squeegee
Rear
Squeegee
1
2
3
4
5
6
7
8
9
10
11
12
Month Insert the Cycle Count Number of cycles between visits
1
2-
3-
4-
5-
6-
7-
8-
9-
10 -
11 -
12 -