AEC TDH-6 Series Operation And Installation Manual page 13

Electrical Panel and System Components
Air Purge
TDH-6 Series Hot Oil Large Temperature Control Units
The pump motor and immersion heater operate on three-phase,
50/60 cycle, nominal voltage with the control circuit at 115 V
single phase. The control circuit voltage is provided by a single
phase machine tool transformer with primary fuse protection and a
grounded secondary. A main power disconnect is included as for
ease of service. The electrical panel is UL listed and complies with
NEC provisions.
All components are IEC rated for long life and reduced
maintenance. The heater elements are branch fused, and protected
from contactor welding by a separate primary voltage contactor.
The pump motor is controlled by a full voltage magnetic reversing
starter, with fused branch circuit overcurrent and thermal overload
protection. Many additional features are available as options.
A NEMA 12 enclosure is standard, with NEMA 4 available as an
option.
Upon initial start-up and mold/process change-out, you'll need to
purge all air and water from the system. The
appropriate valving to ensure complete purging. Procedures are
covered in Chapter 3.
!
WARNING
Failure to purge the system of air before heating
may result in serious injury or critical system and
equipment damage.
Make sure you properly purge the system of air
before starting the heater cycle.
TDH-6
unit has
Page 13