YS12P_YS12F_Mainte_E.pdf - 第87页
3-22 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…
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3
Periodic maintenance items
9
Mount 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.
0
Check the belt rotating condition.
1. Make sure that the board clamp plate
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 is equipped with a carriage, set
the carriage.
3. Press the [Conveyor In] button on the
[Unit] - [Conveyor] screen to turn on the
conveyor motor and check the belt
rotation.
4. If the conveyor belt rotation is uneven or
if the belt deflects, adjust the pulley
position that applies tension again.
54315-L6-00
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
0.5 mm
Conveyor drive buttons
Left Right
Low Left Low Right
Checking conveyor belt rotation
Checking the belt rotating condition
Board clamp plate
Board clamp plate
Conveyor belt
Belt upper surface
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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. It is recommended to replace the air filter
if heavy dust deposits are found.
e
1
Move the head unit forward.
1. Press the emergency stop button and
then open the machine safety cover.
2. Move the head unit forward.
2
Remove the filter cap.
Loosen and remove the filter cap with a
slotted screwdriver.
53340-L6-00
3
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 qir blow tool to blow it away
and return the filter back to the ejector.
53316-L6-00
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.
4
Reattach the filter cap.
1. Fit the filter and O-ring 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, make sure that the O-ring
does not come out from between the manifold and the
filter cap.
Cleaning the filter
Step 4
Air blow toolFilter
Removing the filter cap
Step 3
Ejector unit Ejector filter
O-ring
Filter cap
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Periodic maintenance items
4.2 Inspecting the ejector vacuum pressure
Check the vacuum level of each ejector of the ejector unit to see if it is working correctly.
If not reaching the specific vacuum level, the valve or the ejector BIT may need to be replaced. Replace with
the procedure in chapter 4, "3.Ejector unit".
e
1
Move the head unit forward.
1. Press the emergency stop button and
then open the machine safety cover.
2. Move the head unit forward.
2
Disconnect the air hoses from the
lower air joints.
Disconnect all air hoses from the lower air
joints. Do not disconnect the air hoses from
the upper air joints.
53333-L6-10
3
Check the ejector vacuum level.
1. Open the [Unit] - [Head] screen.
2. Press the [Vacuum] button while blocking
the tip of the air hose with finger. Perform
this procedure to all heads.
3. Make a note of the "Max" value of each
head while the air hose is blocked, and
check that the value is higher than the
reference value below.
54305-L6-10
n
Reference value of ejector vacuum level
When air joint is blocked: 190 or higher
TIP
If the vacuum level of any head does not reach the
reference value, 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 as needed.
4
Return the air hoses to the original
position.
Step 2
Disconnecting the air hoses
Transparent air hose
Air joint
Air joint
Checking the vacuum levels
Step 3
Press the [Vacuum] button for each head.
Check "Max" vacuum levels
(with air joint blocked).