4-20 I Operation
Using the Optional Mold Purge Option
Only the TW-P Thermolator can be ordered with an optional purge valve (Mold Purge),
which clears the process lines of fluid using compressed air. The valve is operated by an
optional manual purge button on the control panel.
IMPORTANT: Before purging the process lines, be sure that the cooling water
source feed is closed. If the feed is open and the air line has a higher pressure
than the cooling water, air may be injected into the cooling water system. If the
cooling water pressure is higher than the air line, cooling water may be injected
into the air line.
1 Press STOP to stop the Thermolator.
2 Shut off the cooling water supply valve.
3 Press MOLD PURGE
to start purging.
• The “Purge” LED lights.
• The cooling valve is opened.
The time required to clear the process lines of fluid will vary according to the length of the
process piping and the size of the tooling.
4 Release MOLD PURGE
to stop purging.
Mold
Purge
Rapid
Cool
Process
Cool Down
Control Power
Autostart Signal
Pump
Heat
Cool
Coolant Pressure
Temperature Limit
Electrical Phase Error
Heat Error
Process Cool Down
Rapid Cool
Communications
Remote Heat/Cool
Program Mode
Mold Purge
Flow GPM (flash)