Installation, Operator’s & Calibration Manual
Radio Anti-Two-Block
©PAT Rev. F 03/26/03
190136_f
4
3.2 TRANSMITTER / SWITCH
The transmitter and battery housing are made of a special plastic
that resists impact and will not become brittle even in low
temperatures.
3.2.1 Transmitter
LED
The transmitter has an LED on the bottom for diagnostics. The LED
should be on when in a two-block condition or when the weight is
lifted. The LED will flash rapidly during a 2-block condition and will
stop flashing after the switch is in a two-block condition for more
than 15 seconds. The LED will flash randomly approximately every 2
seconds when the switch is transmitting. When in sleep mode, the
LED will not flash.
3.2.2 Storage of the A2B transmitter for Travel
The weight should remove from the switch when traveling to extend
battery life. The system is in permanent lockout and the system will
not function until the chain is unhooked. To use the feature, attach
any part of the chain into the hook. When it is desired to use the
switch again, simply unhook the chain to allow the switch to close.
The weight and chain must be hung from the switch and/or the chain
must be unhooked before the crane is operated.
