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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. 24.
When the contr
ol valves (VA, VB) close, the A
and B materia
l has reached target temperature.
Coolant flows
through the bypass control valve (VC),
circulation
pump (CP), sight glass (SG), proportioner
coolant fill b
ottle (HF), and back to the heat exchanger
in the engin
e coolant loop. See Fig. 23
HE
SG
CP
VC
VB
VA
HE
Propor
tioner Coolant Loop — A and B Valves Closed
(not he
ating material)
Figur
e23
SG
CP
VC
VB
VA
HE
HE
Proportioner Coolant Loop — A and B Valves Open
(heating material)
Figure 24
32 3A1705J