Operation
CAUTION!
Never operate the ADS unless the abrasive outlet hose connects
to a cutting system.
Always keep the lid on, except when adding abrasive. The lid prevents abrasive from
spraying from the silo when the vessel releases pressure before entering the fill cycle.
If the ADS connects to a cutting system using FlowCUT, the cutting program stops when
the vessel switch signals the PLC. Start FlowCUT again after the indicators have reset.
Normal operation
This table describes the conditions of the switches, valves, and other components.
Switches
Engaged State
Disengaged State
Power switch
The controller checks the state
of all switches and solenoids.
The controller waits for abrasive
to be added to the silo or starts
the steady state operating
cycle.
No pressure is supplied to the
vessel; the main pinch valve
opens. All controls/electronics are
without power.
Silo low abrasive
switch
The switch is engaged when it
senses abrasive.
The switch is disengaged when it
does not sense abrasive. The
yellow warning indicator flashes
and the rhythmic audio signal
operates.
Vessel low
abrasive switch
The switch is engaged when it
senses abrasive.
During a refill cycle, the switch
signals the pinch valve to close
and for the vessel to pressurize.
When the switch is disengaged,
the refill cycle starts.
If disengaged for approximately
20 seconds, the yellow warning
indicator turns on continuously
and the audio signal operates
continuously.
Pressure Switch
(Mach 4c only)
When engaged, the pressure
switch signals FlowCUT that the
vessel has air pressure.
When disengaged, FlowCUT
prevents any programs from
starting and stops any running
programs.
© 2016–2017 Flow International Corporation
Page 14 of 31
