PowerBox Systems Mercury SRS Instruction Manual page 21

Mode 3:
Extend undercarriage:
Open nosewheel doors → extend nosewheel → close nosewheel doors
Open main wheel doors → extend main undercarriage → close main wheel
doors
Retract undercarriage:
Open nosewheel doors → retract nosewheel → close nosewheel doors
Open main wheel doors → retract main undercarriage → close main wheel
doors
Move the cursor to the appropriate mode, and press the SET button to
confirm your choice. Select OK to move on to the next screen display:
Connect your retract system valve to output C. One of the following will now
occur, depending on the way your valve is programmed:
a) Valve is triggered, and the undercarriage retracts. Press button II on
your SensorSwitch, and hold it pressed in until the undercarriage
extends again.
b) Valve is not triggered, and the undercarriage remains in the extended
state.
Press the SET button twice to move to the next screen display:
-21-