YG12_英文保养手册.pdf - 第88页
4-3 4 How to replace consumable parts 3. Ejector unit 3.1 Replacing an ejector bit 1 Shut off the air supply . T urn the air supply/shutoff valve inside the machine lower left panel to the right, to stop the air supply. …
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How to replace consumable parts
2. Replacing an air joint (YG12)
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1
Press the emergency stop button.
The machine must be in emergency stop to
ensure safety during work.
2
Remove the defective air joint.
Insert an M8 hex wrench at the bottom of
the air joint and push it up, then take the air
joint out.
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Be careful not to damage the air hoses.
3
Install a new air joint.
While holding the air joint so the mark
(notch) faces the front side of the machine,
insert it into position from the top of the
feeder plate.
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of the machine. If the air joint is inserted without
aligning the mark orientation, dust or debris may
penetrate into the air hose.
surface is lower than the feeder plate surface. Air
joints will slightly rise over time. Reinsert them into
position.
4
Check the operation.
1. Install a feeder at the new air joint
position.
2. Openthe[Unit]-[Feeder]tabandcheck
the feeder on/off operation.
Removing the air joint
Step 2
Air joint
Hex wrench
Installing an air joint
Step 3
Mark orientation
Concave mark
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How to replace consumable parts
3. Ejector unit
3.1 Replacing an ejector bit
1
Shut off the air supply.
Turn the air supply/shutoff valve inside the
machine lower left panel to the right, to stop
the air supply.
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2
Move the head to a convenient
position for replacement work.
3
Pull out the ejector bit by hand.
Remove the cap by turning it to the left with
a hex wrench. The end of the bit is seen
sticking out of the ejector unit. Pull out the
bit by hand.
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The removed bit cannot be reused. Reuse may cause
component pickup errors.
4
Clean the bit installation hole.
Remove dust or grime in the installation hole
using an air blow gun (available as an
option), lint-free cotton swab, etc.
5
Install a new bit.
Fit an O-ring to the new bit and install one
end of the bit into the cap. Then insert the
bit into the installation hole and close the
cap by turning it to the right.
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If the bit is not installed in place, it may fly out when
vacuum is turned on. Always make sure that the bit is
securely installed.
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When closing the cap after inserting the bit, be careful
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Supply air to the machine.
Turn the air supply/shutoff valve inside the
machine lower left panel to the left, to start
the air supply.
Shutting off the air supply
Step 1
Air supply/shutoff valve
Removing the bit
O-ring CapBit
Step 3
Bit installation hole
Installing the bit
O-ring
Not installed in place
Step 5
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How to replace consumable parts
3.2 Replacing a solenoid coil
1
Turn off the air supply and the
power to the machine.
Quit the software and turn off the machine
power switch. Then turn the air supply/
shutoff valve inside the machine lower left
panel to the right, to stop the air supply.
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2
Move the head to a convenient
position for replacement work.
3
Disconnect the connectors of the
ejector harness.
Disconnect all connectors of the ejector
harness.
4
Remove the solenoid coil to be
replaced.
Use a precision Phillips screwdriver to loosen
the two screws securing the solenoid coil
and then remove the solenoid coil.
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Attach a new solenoid coil.
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When replacing a solenoid coil, be careful not to drop
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Reconnect the ejector harness.
Reconnect the connectors of the ejector
harness.
7
Supply air to the machine and turn
on the machine power.
When the machine has started, perform
return-to-origin.
8
Check the operation.
Generate a negative pressure (vacuum)
with the same procedure described in 3.1.2,
"Checking the blow valve operation" in
Chapter 3, and check that no abnormal
values appear.
Shutting off the air supply
Step 1
Air supply/shutoff
valve
Removing the solenoid coil
Step 4
Precision Phillips screwdriver
Solenoid coil
Gasket