YSM40R_Mainte_E.pdf - 第72页

3-2 3 Periodic maintenance items 1.1.2 Checking the leaf spring/roller lock Inspect the nozzle holding status of the MU/FL head periodically . • An unstable holding force at the nozzle leaf spring (hereafter "leaf s…

100%1 / 217
3-1
3
Periodic maintenance items
1. Weekly maintenance
This section mainly describes weekly inspection and cleaning.
1.1 For all heads
1.1.1 Checking the nozzle spring action
Poor spring action of nozzles may cause pickup errors. Check the spring action of each nozzle at regular
intervals to prevent pickup errors.
To check the spring action, press on the tip of each nozzle. If it returns normally there is no problem. However,
if the return action is poor or sluggish, then pickup errors and recognition errors are likely to occur.
c
CAUTION
When checking by pressing the nozzle tip, use care to avoid applying excessive force. The condition is normal if the
tip returns to its original position after being pressed in approximately 1 mm.
Checking the nozzle spring action
Example showing type 502A nozzle
Press on the nozzle tip with your hand.
Returns to original
position
Returns sluggishly
or does not return.
OK
No good
53300-N9-00
3-2
3
Periodic maintenance items
1.1.2 Checking the leaf spring/roller lock
Inspect the nozzle holding status of the MU/FL head periodically.
• An unstable holding force at the nozzle leaf spring (hereafter "leaf spring") can adversely affect pickup, recognition,
and mounting operations.
• If the roller lock is loose, this may adversely affect the nozzle holding force.
• If the roller is scratched, this may cause recognition errors.
n
Leaf spring inspection points
Check the following points by detaching the nozzle and attaching it to the nozzle holder.
• The leaf spring has enough gripping force.
• There is no gap between the leaf springs and the nozzle (FL head : nozzle arm assembly).
• The leaf spring is not warped or deformed.
• The gripping part of the leaf spring is not frayed.
• Mounting bolt and screw are tightened.
• Rollers are not scratched/unstable.
Checking the nozzle gripping force
MU head FL head
There should be
no gap.
There should be no
deformation or wear.
Mounting screw/bolt
are tightened.
53301-N9-00
n
NOTE
If any problem is found during the check work shown above, replace the leaf springs or roller lock referring to "1.
Replacing the leaf spring and roller lock" in Chapter 6.
As a rule, be sure to replace a pair of components even when only the leaf spring or roller on one side deteriorates
.
n
NOTE
Make sure to return detached nozzles to the original positions of head.
If detached nozzles from the nozzle station (option), return them to the original storage positions.
3-3
3
Periodic maintenance items
1.2 Nozzle cleaning
This section describes the cleaning and lubrication procedure for Type 50X Series nozzles. Use the same
procedure for Type 51X, Type 60X Series, and Type 72X Series nozzles.
1.2.1 Cleaning and lubricating nozzle slide section
e
1
Detach nozzles.
1. Press the emergency stop button and
then open the machine safety cover.
2. Detach nozzles from the head. If the
machine is equipped with the nozzle
station, press the [Nozzle. Stn Shutter]
button to open the nozzle station shutter
and detach nozzles.
2
Clean the slide section.
Apply IPA (isopropyl alcohol) or ethanol to
the slide section. Push the nozzle tip several
times to repeat the spring action and clean
the slide section. After cleaning, blow
sufficient air to remove IPA or ethanol.
3
Lubricate the slide section.
Using a precision screwdriver or similar tool
with a pointed tip, apply a small amount of
turbine oil (just enough so that it sinks in) to
the slide section.
53302-N9-00
4
Check the nozzle spring action.
Press on the nozzle tip several times to
spread turbine oil. Use a lint-free cleaning
cloth to wipe away excess oil from around
the nozzle.
53303-N9-00
5
Remove excess oil remaining in the
nozzle.
Air blow with the air blow tool for about 5
seconds from the nozzle tip side, and about
5 seconds from the nozzle mounting side.
Repeat this process a few times to remove
excess turbine oil remaining in the nozzle.
n
NOTE
A thin coat of oil is enough to lubricate the slide section.
6
Check that the oil is removed.
Blow air through the nozzle again placing
commercially-available oil blotting paper
over the opposite end of the nozzle, and
check for residual oil in the nozzle.
n
NOTE
Performing step 5 is usually sufficient to remove oil
remaining in the nozzle. However, if oil still remains, blow
air through the nozzle once again.
53304-N9-00
7
Return nozzles to original
positions.
After checking again that no oil remains in
the nozzle, return the nozzle to the original
head/nozzle station.
Lubricating the slide section
Step 3
Slide section
Use a precision screwdriver
to apply a small amount of
turbine oil.
Checking the spring action
Step 4
Spring action at nozzle tip
Checking for residual oil
Step 6
Oil will appear after blowing air (first time) for
about 5 seconds from the nozzle tip.
Repeat the air blow for about 5 seconds
each from the nozzle tip and from the
attachment side.
This task is finished when oil no
longer appears.
Oil blotting
paper
AIr blow tool