User Manual – ePX 200
OptiPro Systems, LLC.
Page 16 of 60
Last Modified: 7/30/2014
5.4
Vacuum Workholding
The Vacuum Drain Tube (in Figure 5-8) collects the small amount of slurry that commonly leaks into the
vacuum system. The purpose of the vacuum drain tube is to collect this fluid before it can get to and
harm the vacuum pump. When the vacuum drain tube gets close to being filled, it must be emptied
using the drain valve at the base, in order to protect the vacuum pump. The vacuum trap tube will be
filled with unfiltered slurry. It must be drained into a container and disposed of according to its MSDS.
Caution: When draining the vacuum drain tube, vacuum suction will be lost at the work piece. Be sure
the machine is not running and that the work piece is adequately supported or removed from the
machine before draining the vacuum drain tube. Remember to close the drain tube when finished.
The work holding vacuum level can be controlled by a lever valve on the front of the machine. The lever
valve will turn the vacuum on, off or partially on. The Vacuum Gage display will show the instantaneous
vacuum level in inHg. The vacuum circuit contains the Vacuum Safety Cup which will fill up only if the
vacuum trap tube overfills, and will shut off any vacuum going to the pump so the pump will not be
damaged.
Figure 5-9: Vacuum Work Holding Controls
Vacuum
Lever Valve
Vacuum Gage
Vacuum Safety
Cup
