Overview
Coolant only flows through the secondary heat
exchangers when the heat exchanger control valves
(VA, VB) are open and the A and B component
temperatures are below the target temperatures set
on the ADM. See Fig 18.
Figure 1
8 Proportioner Coolant Loop — A and B
Valves O
pen (heating material)
When the control valves (VA, VB) close, the A
and B material has reached target temperature.
Coolant flows through the bypass control valve (VC),
circulation pump (CP), sight glass (SG), proportioner
coolant fill bottle (HF), and back to the heat exchanger
in the engine coolant loop. See Fig. 19.
Figure 19 Proportioner Coolant Loop — A and B
Valves Closed (not heating material)
36 332636C
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