c900773.R02_EN.pdf - 第45页
3 Mechanical Section 3-5 ■ Checking the Nozzle for Clogging With nozzles placed in the head, turn ON the suction to check the air pressure. “Choke Threshold” has been assigned to each nozzle. The air pressure must be bel…
3 Mechanical Section
3-4
Inspection for Head/Nozzle Clogging and Solenoid Valve
Breakdown
The following inspection must be carried out approximately once a week.
■ Inspection of Solenoid Valve
The switching valve of the solenoid valve may catch foreign matter causing air leakage. Air leakage will
turn the suction ON even if it is turned OFF.
As a result, the suction cannot be turned OFF after a component is mounted, and components may be
brought back instead of being mounted on a PCB.
● Inspecting by Selecting [Manual] – [Air Pressure]
①Checking the maximum air pressure
Turn ON the suction and press the head tip with fingers to check the air pressure. The air pressure is
satisfactory when it is “600” or higher.
②Checking the head for clogging
With no nozzles placed in the head, turn ON the suction to check the air pressure. Typical air pressure is
approx. “40”. An error occurs when the air pressure is “120” or higher during vacuum check performed at
nozzle replacement.
③Checking the nozzle for clogging
With nozzles placed in the head, turn ON the suction to check the air pressure. “Choke Threshold” has
been assigned to each nozzle and the air pressure must be below it. If it is not, the nozzle will be considered
to be clogged and an error occurs.
④Checking the solenoid valve for switching failure
Turn OFF the suction and check for change in the air pressure.
- Press the head/nozzle tip with fingers and check for change in the air pressure.
- Turn ON and OFF the suction a few times and check for change in the air pressure.
If the air pressure changes even though the suction is OFF, air is probably leaking from the suction solenoid
valve.
NOTE: Do not disassemble the solenoid valve. Manufacturer’s guarantee will be ineffective once the solenoid
valve is disassembled.
Part Name
Part No. Remark
VALVE LE6-M71A2-B0X Supply Valve
VALVE LE6-M71A2-C0X Breaking Valve
NOTE: For official and more precise inspection, use a digital vacuum meter and check accuracy of the displayed air
pressure value.
Part Name
Part No. Remark
MANOMETER ASSY. LC1-M89A5-00X Vacuum Gauge Set
3 Mechanical Section
3-5
■Checking the Nozzle for Clogging
With nozzles placed in the head, turn ON the suction to check the air pressure. “Choke Threshold” has been
assigned to each nozzle. The air pressure must be below the threshold. If not, the nozzle will be considered
to be clogged and an error occurs. (The “standard open value” given in the table below is obtained from
measurement of the open value of each nozzle (brand new nozzle) and must be used as a reference.)
Nozzle type
Standard open value (reference) Nozzle clog criteria
(mmHg) (MPa) (mmHg) (MPa)
P005 Less than 50
0.007
以下
300 0.040
P006 Less than 50
0.007
以下
300 0.040
P012
190
～
240 0.025
～
0.032
350 0.047
P013
50
～
90 0.007
～
0.015
300 0.040
P017
200
～
240 0.040
～
0.047
420 0.056
P018
50
～
90 0.007
～
0.015
300 0.040
P019
50
～
90 0.007
～
0.015
300 0.040
P020
50
～
90 0.007
～
0.015
300 0.040
P050
580
～
640 0.078
～
0.085
540 0.072
P051
500～540 0.067～0.072
540 0.072
P052
350～400 0.047～0.053
460 0.061
P053
50～90 0.007～0.015
350 0.047
P054
50～90 0.007～0.015
300 0.040
P055
50～90 0.007～0.015
300 0.040
P056
50～90 0.007～0.015
300 0.040
P057
50～90 0.007～0.015
300 0.040
P061
450～520 0.060～0.069
510 0.068
P062
110～160 0.015～0.021
350 0.047
P063
50～90 0.007～0.015
300 0.040
P072
50～90 0.007～0.015
350 0.047
P073
50～90 0.007～0.015
300 0.040
P030
580
～
640 0.078
～
0.085
600 0.068
P031
480
～
560 0.064
～
0.075
510 0.068
P032
440
～
490 0.059
～
0.065
450 0.060
P033
300
～
350 0.040
～
0.047
420 0.056
P034
190
～
240 0.025
～
0.032
350 0.047
P042
440
～
490 0.059
～
0.065
450 0.060
NOTE: 1mmHg=133.322Pa=0.00013332MPa
To maintain the designed accuracy and component-placement rate of the machine, clean the air passage
between the air filter assy. and nozzle holder periodically.
ACTION: With no nozzles placed on the head, blow an air by air blower from the nozzle placement cuff or filter
mounting air tube.
● Cleaning Interval
Approx. once a month
3 Mechanical Section
3-6
Nozzle
When obstacles such as solder paste are stuck to or clogged in the nozzle, the suction becomes weak.
Existence of such obstacles on the nozzle tip also prevents the vision processing from correctly recognizing
smaller components. Clean the nozzle in order to avoid these troubles.
■ Nozzle Cleaning with Air Blow
Clean the tip of the nozzles with alcohol and then blow away obstacles and dust with an air blower (more
than once a week). When choking error occurs, also clean the nozzle in the same way.
Be careful not to apply alcohol to identification marks. Quickly wipe off if
applied.
■ Nozzle Cleaning Using Wire (1)
Normally, cleaning the nozzles with the air blow may be sufficient, but use a wire to clean the nozzles when
obstacles and dirt are firmly stuck on them.
NOTE: Before cleaning the nozzle by using a wire, the O-ring and the nozzle filter inside the nozzle must be
removed. Cleaning the nozzle with a wire without removing them may result in the damage or loss of them.
After the nozzle is cleaned, make sure to re-install them using a special tool.
NOTE: For a description of how to remove/install the O-ring and nozzle filter, refer to “Removing O-ring and
Nozzle filter” and “Attaching O-ring and Nozzle filter” given later in this manual.
Take care not to get injured with the fine wire when cleaning the nozzle.
ACTION:
① Have a wire ready.
(300mm length, 0.1mm diam. Part No. KV8-M8887-00X)
② Remove the O-ring and nozzle filter from the nozzle.
③ Pass the wire through the nozzle hole.
④ Wind to fasten the wire between both ends of the nozzle cleaner assy.
(Part No. KV8-M8881-A0X)
Nozzle
Wire