Operations and Maintenance Manual Universal Vacuum System
Version 1.2—March 2004 Page 11
POWER INTERRUPT AND
INTERLOCK
The Universal Vacuum System has three independent safety systems consisting of an
Emergency Shutoff button, the Power Interlock on the front panel and the Lock-out/Purge
valve for air pressure. Machine operation cannot be restarted until the EMERGENCY OFF
button is pulled or twisted clockwise to the OUT position. The Machine On button must
then be pushed to restart the machine.
Notes: To shut down the machine for any extended period, press the EMO and then
disconnect facilities power to the machine.
Figure 1-2 Upper Control Panel
The Power Interlock on the front panel prevents opening the machine cabinet without first
shutting off machine power. The power interlock may be locked in the OFF position and
used as part of an established lock-out procedure.
The Pneumatic lock-out/Purge valve is located behind the lower control panel in the center
and may be locked in the OFF position. A red flag should be used when this valve is
locked-out since the valve itself is not visible from the front of the machine.
Interlock
Mach. On
Button
Power On
Indicator
Emergency
Off Button
Purge
Indicator
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