Jiffy-Tap

Electric Limit Switches:

The electric limit switches mounted inside the top cover of the Jiffy-Tap are of high quality with a life expectancy of 20,000,000 cycles. Each switch has a common, a normally open (N.O.), and a normally closed (N.C.) set of contacts, permitting them to be used in almost any electrical control circuit devised for the Jiffy-Tap. On standard basic Jiffy-Tap units these switches are unwired, and the external wiring brought through the conduit hole in the rear of the switch cover. Electrical Option EP is available. This is a 12-ft. cable wired to all terminals on the switches and to frame ground, and brought in through an 8-pin plug and socket in the switch cover. This permits the Jiffy-Tap to be unplugged quickly from its wiring.

The position of both limit switches may be adjusted to control tapping depth and retracted position of the spindle. If a switch should fail, or if the solenoid valve spool should fail to center when both solenoids are de-energized, the Jiffy-Tap spindle might over travel. However, precautions have been taken in the Jiffy-Tap design to minimize damage (if any) if such a failure should ever occur.