Issue 13 CWT Compact Touch Installation and Maintenanace Manual Page 21
A slightly inclined trap door, operated by a solenoid plunger, is held in opened
(clock-wise) position by a permanent magnet inside the solenoid across which no
voltage is currently applied (the above figure shows the trap door in its closed
position).
The figure below illustrates the mechanism in idle mode before any metal object
is detected in the coin slot. The barrier plate is kept closed by a compression
spring and the trap door is in the open position.
When a metal object is detected by the detector coils, a voltage is temporarily
applied across a separate coil in the solenoid which generates a magnetic field
Figure 4, Anti pin in idle mode. The barrier plate covers the coin slot opening and the
trap door rests in open position.
Figure 3, Anti pin module in closed position.
CWT016 R3
Coin unit
Trap door
Coin slot
Metal-detector
coils
Barrier plate
Coin verifier
Scrap channel
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