Prochem Peak GTX - Manual (Page 30)

28
Operations
Chemical Injection System
The chemical injection system is unique in that it
utilizes the pressure spikes generated by the high-
pressure solution pump to move chemical into the main
solution 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 drawn from the container, and through
the flow meter, which indicates rate of flow. The
chemical then moves to the chemical pulse pump
where it is pressurized.
The chemicals flow to the chemical selector valve,
which can turn off the chemical flow or when set to
"Prime" sends it into the waste tank to purge air from
the system, or when "CHEM" the chemical can be
directed to the metering valve. The metering valve
controls the amount of chemical that enters the solution
outlet manifold.
The manifold assembly's check valve will not allow the
chemicals to travel upstream into the plumbing system
of the unit. The chemicals are mixed there with hot
pressurized water that makes a cleaning solution. The
flow setup valve is set to "Setup" while adjusting the
chemical mix. This causes incorrectly mixed solution to
safely drain to the waste tank until the manifold has the
correct solution mix. Setting to "CHEM" lets the solution
flow to the outlets for cleaning.
86325860 PEAK GTX PROCHEM
WASTE
TANK
SOLUTION
OUTLETS
SOLUTION
OUTLET
MANIFOLD
CHEMICAL
METERING
VALVE
PRESSURIZED
HOT WATER
CHEMICAL
CONTAINER
CHEMICAL FLOW
CHEMICAL PRIME
SOLUTION FLOW
CHECK
VALVE
CHEMICAL
PUMP
INLET
STRAINER
FLOWMETER
CHECK
VALVE
CHEMICAL
SELECTOR
VALVE
FLOW SETUP
VALVE
CHEMICAL
CHECK
VALVE SOLUTION
SCREEN