ComCo Systems Inc. | 800.533.3794 | www.comcosystems.com
500648 Rev A
14
621
Series
Theory of Operation
Powering the System
The rocker switch in the center of the Operator unit control panel controls power to the system. The
adjacent red LED indicates “power on.”
NOTE
: The power switch does
not
switch off 120VAC service to any component. It is only used
to deactivate the system. Some components may remain energized and/or active when the system
is “off.”
Power ON
1.
Technician switches power on
2.
Power indicator illuminates
3.
System is now in ready state
Power OFF
1.
Technician switches power off
2.
Power indicator extinguishes
3.
System is now off
The power switch may be used to recover from unusual system conditions simply by switching it off and
on – this will reset the system.
Send cycle
1.
Technician inserts carrier into Operator Unit
2.
Technician closes Operator Unit door and presses SEND
3.
Send cycle begins
4.
Pressure blower activates
5.
The valve in the Operator Unit Check Valve closes and the valve in the Operator Unit opens,
sending air pressure to Operator Unit
6.
Carrier is propelled from Operator Unit into transmission tubing, towards Customer Unit
7.
Carrier passes Deceleration Switch Tube over Customer Unit
8.
Pressure blower deactivates
9.
Carrier decelerates due to Solenoid engaging
10.
Solenoid timer waits for Carrier to land.
11.
Send cycle ends; System is now in ready state
Operation
