YS24X_Mainte_E - 第99页
3-32 3 Periodic maintenance items 4. Three-month inspection 4.1 Cleaning and replacing the ejector filter Although depending on the air supply conditions and operating time, ejectors should be inspected once every 3 mont…
3-31
3
Periodic maintenance items
0
Attach the board clamp plate.
1. Fit the board clamp plate into its original
position and tighten the board clamp
plate mounting bolts with a hex wrench
(3).
2. Remove the square cloth placed on the
push-up plate.
533D8-L4-00
q
Check the belt rotating condition.
1. Make sure that the board clamp top
surface is approx. 0.5mm lower than the
belt upper surface.
2. Close the machine safety cover and
cancel the emergency stop. If the
machine could be equipped with a
carriage, set the carriage.
3. On the [Unit] - [Conveyor] screen, press
the [Conveyor In] button or [Conveyor
Out] button to turn on the conveyor
motor and check the belt rotation.
4. If the rotation speed fluctuates or there is
slack in the belt, adjust the position of
the tensioner (pulley/pulley bracket) that
tension is applied, and then check the
rotation again.
54319-L4-00
c
CAUTION
When the difference between the belt upper surface
and board clamp top surface is very little, the board
transfer error may occur easily. In this case, contact
YAMAHA sales representative.
Step 10,11
Attaching the board clamp plate
Board clamp plateBoard clamp plate mounting bolt
0.5 mm
Board clamp
Belt upper surface
Conveyor operation check
Step 11
Conveyor drive buttons
Left Right
Low Left Low Right
3-32
3
Periodic maintenance items
4. Three-month inspection
4.1 Cleaning and replacing the ejector filter
Although depending on the air supply conditions and operating time, ejectors should be inspected once every
3 months. Use an air blow tool to remove dust buildups when small. We recommend replacing the air filter if
heavy dust deposits are found.
e
1
Make the preparations for the
cleaning and replacing work.
1. Press the emergency stop button and
then open the machine safety cover.
2. If the machine is equipped with a
carriage, remove the carriage to allow
you to easily access the head.
3. Move the head unit forward.
4. Place a square cloth under the head unit.
2
Remove the baffle plate.
Remove the baffle plate using the hex
wrench.
53396-L4-00
3
Remove the filter cap.
Loosen and remove the filter cap with a
slotted screwdriver.
53331-L4-00
4
Clean the filter.
Use tweezers to take the filter out of the
ejector. When there is only a little dust in the
filter, use an air blow tool to blow it away
and return the filter back to the original
position.
53332-L4-00
n
NOTE
If there are heavy dust deposits in the filter or the filter
has discolored, replace it with a new filter (K46-M8527-
C0X). As a general guide, filters should be replaced
once every 3 months, although this depends on the
actual operating time.
5
Reattach the filter cap.
1. Fit the filter into the filter cap and insert it
into the ejector.
2. Turn the filter cap to the right until it locks
and clicks.
c
CAUTION
When attaching the filter, be careful to make sure the
O-ring does not come out from between the manifold
and the filter cap.
6
Reattach the baffle plate.
1. Reattach the baffle plate at its original
position using the hex wrench.
2. Remove the square cloth.
Removing the filter cap
Step 3
Ejector unit
Ejector filter
Filter cap, O-ring
Cleaning the filter
Step 4
Air blow toolFilter
Step2
Removing the baffle plate
Baffle plate
3-33
3
Periodic maintenance items
4.2 Checking the ejector vacuum pressure
Check the vacuum level of each ejector of the ejector unit to see if it is working correctly.
When the level does not reach the specified vacuum level, the valve or the ejector BIT may need to be
replaced. See chapter 6, "3.Ejector unit" to replace the valve or the ejector BIT.
e
1
Move the head unit forward.
1. Press the emergency stop button and
then open the machine safety cover.
2. If the machine is equipped with a
carriage, remove the carriage to allow
you to easily access the head.
3. Move the head unit forward.
2
Remove the air hoses from the air
joints at the bottom of the head.
Remove all air hoses from the air joints at the
bottom of the head. Do not remove them at
the top.
53333-L4-00
3
Check the ejector vacuum level.
1. Open the [Unit] - [Head] screen.
2. Press the [Vacuum] button while blocking
the tip of air hose with your finger..
3. Make a note of the "Max" reading of
each head while the air hose is blocked,
and check that the reading is higher
than the criterion value below.
Make the same check for all heads.
54305-L4-10
n
Criterion of ejector vacuum level
When air joint is blocked: 190 or more
TIP
If the vacuum level of any head does not reach the
criterion value, then check the air path in the head
(interior of the spline shaft or air hose between the
ejector and spline shaft). Clean or replace it if
necessary
4
Return the air hoses to the original
position.
Disconnecting the air hoses
Step 2, 3
Air hose disconnected (transparent hose)
Block the air hose with your finger during measurement.
Bearing holder
Checking the vacuum levels
Step 3
Press the [Vacuum] button for each head.
Check "Max" vacuum levels
(with air joint blocked).