Chemical Injection System - Prochem LEGEND GT Operating Instructions Manual

OPERATION

CHEMICAL INJECTION SYSTEM

The chemical injection system is unique in that it
utilizes the pressure spikes generated by the high-
pressure water pump to move chemical into the
main pressure stream. The high pressure spikes
move the diaphragm in the chemical pulse pump
forcing small amounts of liquid chemical to be
moved in a single direction of flow with the aid of two
check valves.
The chemical is sucked up from the container and
fed through the flow meter to the chemical pulse
pump where it is pressurized.
CHEMICAL PUMP
CHEMICAL JUG
FLOW METER
3-10
METERING VALVE
ON
PRIME
WATER PUMP
86313050 LEGEND GT 09/12/08
After being pressurized by the chemical pulse pump
the chemicals are the fed to the control valve which
directs the chemical either into a bypass loop to
purge air from the system or in to the solution
metering valve.
The metering valve creates an orifice allowing the
correct amount of chemical to enter the outlet
manifold. The outlet manifold assembly is complete
with a check valve that will not allow the chemicals
to travel upstream into the plumbing system of the
unit.
The chemicals are then mixed with hot pressurized
water that make up a solution for the chosen
cleaning application.
OFF
CONTROL VALVE
OUTLET CHECK VALVE
OUTLET SCREEN
SOLUTION OUTLET