Graco 311163ZAC Bin Evacuation System Manual De Usuario

The low limit proximity switch (641) is located near the 
air cylinder (mounting plate (15) and can be adjusted to 
operate at different levels in the bin. See F

IG

. 13.

The pumps operate in fast mode until the ram plate 
reaches the low limit. The proximity switch changes the 
pumps to the slow mode operation for a user selected 
amount of time, after which the pumps stop, the seal 
deflates, and the ram raises.

The system timer controls how long the pumps run at 
slow speed at the end of bin evacuation. After the time 
elapses, the controller stops the pumps, deflates the 
seal, and raises the ram up.

NOTE: See Setting the Bin Empty Timer and Setting 
the Vacuum Pump Timer, page 24, for additional infor-
mation on adjusting the proximity switch and system 
timer.

4

641

15