Titan ProPAC-3, Руководство пользователя

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Dye System Considerations
The ProPAC-3 incorporates a specially designed output for product line flush situations. Dyed and clear
products are to be loaded from the same load arm. The Blocking Control Valve is used to minimize the
capillary effect of the dye leaching into the product line after the product line is flushed. The Blocking
Control Valve Output contact is closed when the injector is authorized and opened when line flush is
initiated. The Blocking Control Valve Output contact is also activated when the test injection button is used
to put extra dye into a particular load.
The following is a recommended installation configuration. The Blocking Control Valve output is on
terminals 1 and 2 on P2. This output is only available by installing a dual output module into output
module location 1.
10 PSI
Product Line
S
50 PSI
N.C Block
Solinoid Valve
ProPAC-3
S
S
N.O Relief Solinoid
Valve
Note:
A
Snubber network
should be installed across the Blocking Control Valve. The Snubber will
eliminate electrical back feed that is generated by de-energizing the Control Valve solenoid. This back feed
can cause the injector to go into Solenoid Leak Detection Alarm when the line flush is initiated. This
Snubber can be made with a .1 µf capacitor with at least a 120 Voltage rating (not electrolytic) and 100
OHM resistors. For maximum noise reduction the Snubber should be mounted as close to the solenoid as
possible.
Snubber Network:
AC Common
P2 - 1 P2-2
AC Line
Snubber Circuit
Solenoid Coil
Capacitor
Resistor
All the above dye system components can be ordered from Titan Industries.