YS24X_Mainte_E - 第105页
3-38 3 Periodic maintenance items 7 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 air hose bracket.
Using the hex wrench, remove the bolts (4
locations) fixing the air hose bracket.
53363-L4-00
5
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.
53335-L4-00
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CAUTION
Never use solvent other than IPA (isopropyl alcohol).
6
Remove the maintenance bolt for
spline shaft cleaning.
Use the precision wrench to remove the
maintenance bolt.
53336-L4-00
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CAUTION
A washer packing is fitted to the maintenance bolt. Be
careful not to drop it.
Cleaning kit
Step 5
Pump (IPA container)
Nozzle
Removing the maintenance bolt
Step 6
Precision wrench
Maintenance bolt
Upper block of spline shaft
Removing the air hose bracket
Step 4
Fixing bolt
Air hose bracket
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3
Periodic maintenance items
7
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.
53337-L4-00
8
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 joint part with your finger to
avoid the air from leaking, and air blow
inside the spline shaft with the air blow
tool from the hole that the maintenance
bolt was removed.
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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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.
9
Repeat the steps 6 to 8.
Repeat the steps 6 to 8 to clean the inside
of spline shafts of all heads.
0
Reattach the air hose bracket to
its original position.
Secure the air hose bracket with the bolt
using the hex wrench.
q
Reconnect the air hoses back to
their original positions.
Return the nozzle to its original head if nozzle
was removed manually.
Cleaning the spline shaft
Step 7
Nozzle of cleaning kit
Spline shaft Pump of cleaning kit
Air blow into spline shaft
Step 8
Blow the air from this hole.
Air blow tool
Block the joint part with your finger.
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3
Periodic maintenance items
4.4.2 Checking the negative pressure
After cleaning the spline shafts, check the negative pressure (vacuum level) generated in each head.
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.
54309-L4-10
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] button
Read "Max" values.