Temperature Control Units : MFC with G Series Instrument
Page: 55
Milacron Process Support Business
4165 Halfacre Road Batavia, Ohio 45103
Phone: 513-536-2584
www.milacron.com
5.3 AVT
TM
COOLING VALVE service
A. The AVT
TM
cooling valve is a two component assembly, consisting of the motor/gearbox
and valve assembly, mated with a machined aluminum coupling. The AVT
TM
valve
assembly is sheltered by an thermoformed drip cover (gure 5.3A). The drip cover is
secured by two nuts and can be removed. When removed, the AVT
TM
valve components
can be viewed (gure 5.3B).
B. The conditions that require servicing of the AVT
TM
modulating valve are as follows:
1. Motor/gearbox assembly defective. This condition is evidenced by non-
movement of the motor when prompted by the instrument. This is evident when
power is engaged to the instrument. The instrument will turn the motor in an
attempt to nd “home base”. If no movement is observed, most likely the motor/
Figure 5.3A
Home switch
Coupling
Valve
Motor / Gearbox
ABS drip cover
Cooling Cylinder
One piece
coupling
Square drive stem
Mounting flange
Stainless valve body
Figure 5.3B
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