00191376-07.pdf - 第72页
8 Annual maintenance work HS Preventive Maintenance 01/2006 US E dition 72 8
HS Preventive Maintenance 8 Annual maintenance work
01/2006 US Edition
71
Check the hood switches and emergency stop buttons 8
: Make sure that the placement machine is switched on and the operating system has started
up.
: Makes sure that "Controller ON" is set on the placement machine.
This is displayed on the main fault indicator.
Press the Start button.
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a Open one of the protective covers. The other protective cover(s) must be closed.
The controller must stop immediately. This will be clearly indicated by the sound of compressed
air being expelled.
s Move the gantry in the X and Y directions.
It must be unpowered and move without resistance.
: If the controller does not switch off or the gantry is not unpowered, the hood switch may be
defective. Replace it with a new switch and test the functions again.
: Test all the protective covers individually and move the relevant gantry.
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d Check the hood switch for damage, particularly to the plastic bar in the middle.
If there is any damage, replace the hood switch with a new one.
: Check that the actuator slides cleanly and without forcing in the switching unit.
If this is not the case, align the actuator and switching unit with respect to one another.
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f Check the emergency-stop buttons for damage.
: When you press the button, check that the controller switches off immediately.
Replace the button with a new one if this is not the case.
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8 Annual maintenance work HS Preventive Maintenance
01/2006 US Edition
72
8
HS Preventive Maintenance 8 Annual maintenance work
01/2006 US Edition
73
Check the protective covers 8
a Open the protective covers to a height of 100 mm (+/-5mm) measured between the machine
frame and the edge of the protective cover. Replace the damping cylinder if the damping cyl-
inder covers cannot be held open reliably at this height.
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: Close the protective covers.
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Clean the protective covers 8
: Check the Plexiglas surfaces of the protective covers for dirt.
: Clean them with a dry lint-free cloth if necessary.
If they are very dirty, moisten the cloth with ethyl alcohol.
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Apply as little pressure as possible when cleaning the protective covers to avoid damaging the
ESD coating. 8
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: Repeat these tasks at every placement machine of the line.
: Switch the placement system on again at the main switch.
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