User guide

Appendix TrueBlend™
152 Edition: February 2008
12.0 Appendix: Addendum for Retrofit Blenders
12.1 Retrofit Control Blender Start up Procedures
When the TrueBlend Controller is used in retrofit replacement applications, follow
the initial setup procedure below to ensure your blender will run at its optimum
accuracy. This procedure sets the default dosing rates and settling times. This set
up will help the blender control “home in” on the actual dosing rate quicker.
1 Determine the valve configuration for the particular blender. This can be
done simply by measuring the operating mechanisms and noting the type
of mechanism.
Example: Blender XYZ
Component 1 – 3” X 6” valve
Component 2 – 3” X 6” valve
Component 3 – 2” X 3” valve
Component 4 – 2” X 3” valve
Component 5 – 2” i.d. feeder
Component 6 – 1” i.d. feeder
2 Select the proper dosing rates for the different valve configurations from
the following table:
Table from Product group
Example: Blender XYZ
Component 1 – 3” X 6” valve – 4000 g/s
Component 2 – 3” X 6” valve – 4000 g/s
Component 3 – 2” X 3” valve – 850 g/s
Component 4 – 2” X 3” valve – 850 g/s
Component 5 – 2” i.d. feeder – 40 g/s
Component 6 – 1” i.d. feeder – 8 g/s