User's Manual

10 309024
Ratio Adjustment
Understanding the terms used with the Variable Ratio
Hydra-Cat (VRHC) System, how it functions, and
how to find and set the correct ratio(s) for your applica-
tion, is the key to easier, more versatile operation of
your proportioning system.
Be sure to read and understand the following informa-
tion before operating the equipment.
Terms
The ratio refers to the simultaneous output of a certain
volume of fluid by the primary and secondary pumps.
The primary pump (123) is directly under the motor; it
usually pumps the base fluid.
The secondary pump (124) is on the opposite end of
the lever arm (49). It usually pumps the catalyst. One
or two secondary pumps may be used: one for pump-
ing catalyst and the other for reducer injection. If two
secondary pumps are used, then two ratios exist.
The ratio index clamp (30) is used to adjust the ratio
of the secondary pump(s).
There are three main points to remember
when applying the use of ratios:
1. Determine the ratio required.
2. Calculate the ratio setting.
3. Set the ratio on the VRHC System.
02366B
Fig. 4
40
EE
123
124
119
39
EE
30
49
DD
46
KEY
DD Manifold Lever
EE Solvent Valves
38