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AEC/Appllcatlon Engineering
3-3
Unit Shutdown
I. Cool down the unit by switching the
CONTROL MODE
switch to
MANUAL.
This step
disables the heaters (prevents the controller from turning them on) and, if so equipped,
opens the Cool solenoid.
You can monitor fluid temperature on the controller display during cool-down.
2. When fluid temperature equals room temperature, press
CONTROL POWER OFF
to tum off
the unit.
3-4
Returning Fluid to the Tank
Jfyou must move the unit from one process to another (i.e. mold changes, etc.), perform the
following steps to drain the mold and process lines.
Note: This procedure is just the opposite of the unit startup/air purge procedure.
I.
Cool fluid to 100°F maximum.
2. Press
CONTROL POWER OFF.
3. Close the
RETURN LINE
valve.
4. Open the VENT valve to allow air to enter the system.
5. Press
CONTROL POWER ON.
6. Press and hold
PUMP START REVERSE.
The pump runs in reverse, drawing fluid from the
mold and lines, then drains the fluid into the reservoir tank.
7. Watch the sight glass to prevent overflow of the reservoir tank.
8. When you have finished returning fluid to the tank, press
CONTROL POWER OFF.
Page 30
Caution!
The reservoir tank may not have adequate volume
to contain the total system capacity of fluid.
The total capacity of the tank is 17 gallons.
If it appears that the tank may overfill,
simply connect a line from the
FILL
port
of the reservoir tank to an auxiliary container.
TOH True Temp,... Serles Hot 011 Temperature Control Units
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