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1) Power "on" → LED-I "lit” → Main hoist and/or trolley
activated.
2) Press “Select” button once → LED-II "lit" → Auxiliary
hoist and/or trolley activated.
3) Press “Select” button again → both LED-I & II "lit" →
Both main and auxiliary hoist and/or trolley activated with
duplicate movements.
4) Press “Select” button again → “Select” mode returned to
LED-I with only the main hoist and/or trolley activated.
7. Interlocking Pushbuttons _ Each set of motion is interlocked to its self so no conflicting
commands can take place. For example, pressing the hoist UP (↑) and DOWN (↓) button
simultaneously will result in no command signal being sent.
8. Battery Changing _ To change batteries, just unscrew the battery cover located on the backside
of the transmitter handset with a (+) screwdriver. When changing new batteries, make sure that
the batteries are installed correctly. The marking inside the battery compartment will tell you
which side is positive (+) charge and which side is negative (-). After changing the batteries,
make sure all screws are tightened.
9. Transmission Data _ The data of the Alpha 500 series are carried out by the power-saving PCDT
method of transmission (Pause Continuous Data Transmission). The duration of each PCDT
transmission is set at 40 seconds, with option for 3 minutes (please contact your dealer for more
details). During this 40-second PCDT transmission, the transmitter unit will only send out "zero
position command" to the receiver if the operator gives no active commands (pushbutton not
pressed). If no active commands are given after 40 seconds, that is 40 seconds after the last
pushbutton is released, the receiver MAIN will be temporarily deactivated (open). The receiver
MAIN can only be reactivated when the receiver unit receives an active command from the
transmitter unit by pressing the pushbuttons. Furthermore, if the system encountered strong radio
interference or if the transmitter is out of the receiving range during operation, to insure operating
safety, the receiver MAIN relay will also be temporarily deactivated.
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