Patriot - Testing & Adjusting Manual
Rev. 01/2016
Page | 25
T
B
T
B
T
B
TEST RESULTS -
What Do They Mean?
If all areas of the test spray harden at the same time, there is no problem and you may
go on to part production.
If there are areas with little or no hardening (or extremely fast hardening) check the
following descriptions for the one that best matches your results and follow the
suggested procedure to fix the problem: A rule of thumb is when you have slow or no
cure it is a catalyst metering problem and if you have a hot spot or fast cure the problem
is the resin metering. Fast cure can be the product of higher temperatures if it is over
the whole part and consistent.
The tests performed below can also be adapted to pour applications by pouring a saw
tooth shaped bead of material. Where the top of the saw tooth is the top of the stroke
and the valley is the bottom of the stroke.
Improper cure at the top and bottom of the stroke indicates an accumulator issue
either catalyst or resin.
Result 1:
Material delivered at the top and bottom of the stroke is not curing or curing more slowly
than the material delivered in the middle of the up- and down-stroke, see figure above.
Indicates:
Low/no catalyst at top (T) and bottom (B) of the pump stroke.
Probable Cause:
There is no or improper accumulator effect in the catalyst
system. Normally this is only a problem at high pressures.
Solution:
Check to be sure you are using the proper catalyst hose, with core.
Install a catalyst accumulator if needed. Check for a restriction in the catalyst
system. See chapter 5 for accumulator charging procedures
