The proportioner coolant loop circulates coolant through secondary heat exchangers (HE) located on the back of the proportioner to heat the A and B component material before the material is pressurized in the proportioner pumps (PA, PB). After the A and B material has been heated in the heat exchangers, the material enters the fluid manifold (FM) and heated hose.

Overview

For models with a booster heater, the A and B material enters the booster heater after the material is pressurized in the proportioning pumps to heat the material higher than 140°F (60°C).

PA

FM

PB

HE

A and B Component Material Flow

Figure 22

3A1705J

31

Page 30 Page 32
Page 31
Image 31
Graco 3A1705J important safety instructions Overview
Page 30 Page 32
Top Page Image Contents