YS12P_YS12F_Mainte_E.pdf - 第93页
3-28 3 Periodic maintenance items 8 Clean the inside of the spline shaft. 1. Insert the nozzle of the cleaning kit into the cleaning hole of the spline shaft. 2. Pour IP A into the spline shaft air path to clean away dus…
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3
Periodic maintenance items
4
Remove the ejector unit bracket.
Use the hex wrench remove the 4 bolts
mounting the ejector unit bracket.
53309-L6-10
5
Remove the spring suspending the
spline shaft.
1. After removing the ejector unit bracket,
keep its hooked as shown at the right.
2. Unhook the spring from the hook pin by
hand.
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6
Prepare the cleaning kit.
1. Pour IPA (isopropyl alcohol) into the
container of the cleaning kit.
2. Place a container or a cloth under the
head to be cleaned to receive IPA.
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c
CAUTION
Never use solvent other than IPA (isopropyl alcohol).
7
Remove the maintenance bolt for
spline shaft cleaning.
Use the precision wrench to remove the
maintenance bolt.
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c
CAUTION
A washer packing is fitted to the maintenance bolt. Be
careful not to drop it.
Step 4
Removing the ejector unit bracket
Hook
Ejector unit bracket
Ejector valve
Mounting bolt
Cleaning kit
Step 6
Pump
Nozzle
Unhooking the spring
Step 5
Spring hook pin
Spring
Ejector unit bracket
Spline shaft
Removing the maintenance bolt
Step 7
Precision wrench
Maintenance bolt
Joint block
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3
Periodic maintenance items
8
Clean the inside of the spline shaft.
1. Insert the nozzle of the cleaning kit into
the cleaning hole of the spline shaft.
2. Pour IPA into the spline shaft air path to
clean away dust and grime.
53322-L6-00
9
Blow air into the spline air path.
1. Prepare an air blow tool (optional
purchase part) and connect it to a
nearby machine.
2. Place a cloth right under the head to be
cleaned.
3. Block the hole where the maintenance
bolt was removed with your finger to
avoid the air from leaking, and air blow
inside the spline shaft with the air blow
tool.
4. Check that the dirt at the tip of the spline
shaft does not stick to a cloth.
5. Install the maintenance bolt.
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n
NOTE
Repeat the Steps 8 to 9 until the IPA flowing from the
spline shaft is cleaned.
c
CAUTION
Make sure to wear safety goggles as the exhaust
blowing air might strike face.
c
CAUTION
A washer packing is fitted to the maintenance bolt. Be
careful not to drop it.
0
Reattach the spring to suspend the
spline shaft.
Hook the spring to the hook pin by hand.
q
Repeat the steps 7 to 9.
Repeat the steps 7 to 9 to clean the inside
of spline shafts of all heads.
w
Reattach the ejector unit bracket to
its original position.
Fix the ejector unit bracket by tightening the
bolts (4) using the hex wrench.
e
Reconnect the air hoses back to
their original positions.
Return the nozzle to its original head if nozzle
was removed manually.
Air blow into spline shaft
Step 9
Nozzle of air blow tool
Air blow switchBlock the cleaning hole with your finger.
Cleaning the spline shaft
Step 8
Nozzle of cleaning kit
Spline shaft
Pump of cleaning kit
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Periodic maintenance items
4.4.2 Checking the negative pressure
After cleaning the spline shafts, check the negative pressure.
1
After assembly, check the vacuum
levels.
1. Leave nozzles detached from the heads.
2. Press the [Vacuum] button in the [Unit]
– [Head] screen to generate a negative
pressure, and read the value displayed in
“Maximum Value” of the screen.
Check the value is the standard value or
less in the open state as shown below.
54311-L6-10
2
Reattach the nozzles.
Attach the nozzles by hand back to the
heads.
n
Vacuum level criteria in spline air path
No nozzles and open : 80 or less
When nozzle is sealed : 190 or more
n
NOTE
The vacuum level in the spline shaft air path might sometimes differ slightly depending on the air source and operating
conditions. Use the above criteria for reference during maintenance.
Checking the vacuum level
Step 1
[Vacuum] buttonCheck the maximum value