Graco Reactor A-20 Operation page 11

Key:
R Main Disconnect Switch - Controls power to all
circuits. It must be ON for proportioning unit to
operate. Temperature displays are lit when main
switch is ON.
S Main Air Filter - Filters system air supply.
T Resin (B) Pressure Gauge - Displays pressure in
resin proportioning system (B side).
U Resin (B) - Inlet Supply Valve
V Resin (B) Fluid Y-Strainer
W ISO (A) Pressure Gauge - Displays pressure in
isocyanate proportioning system (A side).
X ISO (A) - Inlet Supply Valve
Y ISO (A) Fluid Y-Strainer
Z ISO (A) Pump Lube System - (A side only)
AA ISO (A) - Packing Nut and Lube Cup - (A side
only)
*ABPressure Limit Switches - Factory set to turn off
air drive system when proportioning pump exceeds
designed operating pressure limit.
*ACPrimary Heater Thermocouple - Senses
temperature of primary heater and inputs that
information.
AD FTS Jumper Harness - Carries electrical signal
from FTS sensor in isocyanate hose to hose
temperature controller.
*AEAir Motor Reversing Switch - (Front of air motor)
Energizes and de-energizes air solenoid valve coils
to reverse direction.
*AF Primary Heater - Heats material to required
dispensing temperature.
AG ISO (A) - (Isocyanate) Proportioning Pump -
Draws in and dispenses a fixed volume of
isocyanate to gun.
311511G
AH Resin (B) Proportioning Pump - Draws in and
dispenses a fixed volume of resin to gun.
™
AI Power-Lock Hose Heat Connection - Connects
power to heated hoses.
*AJ Primary Heater Over-Temperature Switch -
Sends signal to temperature controller if heater
exceeds maximum temperature condition.
AK Resin (B) Pump Wet Cup - Access for daily wet
cup refill.
DD Air Inlet Ball Valve - (3/8 NPT male fitting)
FF ISO (A) Inlet - Fitting (1/2 swivel fitting)
GG Resin (B) - Inlet (3/4 swivel fitting)
* Components not shown.
Component Identification
11