R 408.14543 Die casting machines; hot and cold chamber types.

Rule 4543. (1) A hot chamber die casting machine shall be equipped with a control or cam operated switch which will prevent operation of the metal injection plunger until the machine is completely closed. (2) A cold chamber die casting machine shall be equipped with a control which will prevent the injection of molten metal unless the machine is completely closed. (3) A cold chamber die casting machine having a faulty plunger tip which allows metal to bypass the tip shall not be used until repaired. (4) An automatic ladler on a cold chamber machine shall be so interlocked that it will ladle or feed only when the plunger is fully returned to the receiving position.