Shini STM-1213-HPW, Manual

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2.
Structure Characteristics and Working Principle
2.1 Working Principle
Picture 2-1
：
STM-HPW Working Principle
The high temperature water from the mould returns to pump and then flows to
heater after being pressurized. Then it will be heated and flow to the mould
again. The process circulates like this. In this process, machine will stop and
give an alarm when liquid level switch detects that the liquid level has dropped
down to the set point. However, if the temperature of that water is too high, the
system will activate the solenoid valve for cooling to let cooling water come into
the system and cools down the water, thus constant temperature can be
maintained. System will activate its over temperature alarm and stop working
when that water temperature is still higher than EGO set point. Safety valve will
be opened for pressure release when system pressure has reached set point of
pressure switch. If the system pressure keeps beyond the set point of the safety
valve, machine will sounds alarm and halts.