JLG X20JPLUS - Solenoid Valves for Emergency Descent; Safety Device Bypass Key

EMERGENCYDEVICE
73
MUX20JP021602
BoomLiftModels X20JPLUS
10.3.SOLENOIDVALVESFOREMERGENCYDESCENT
Thecylindersofthefirst‐secondbooms,ofthethirdboomandtheJIBhaveaso‐
lenoidvalveforemergencydescent.Activatingtheemergencydescentbu ttonon
theremotecontrolʺPushbuttons(p. 61)ʺenergisesthesesolenoidvalves,which
allowthedescentoftheaerialpartofthestructureduetog
ravity.Theuseofthis
emergencydevicedependsontheplatformʹselectricalsystembeingpowered.
10.4.SAFETYDEVICEBYPASSKEY
Themachinehasakeydevicethatactsontheelectricalcircuit,bypassingthepla‐
tformsafetysystems.Thedeviceissituatedonthecoveroftheelec
tricalcompo‐
nentscompartment.Theuseofthisselectorswitchisillustratedinthefollowing
paragraphsonhowtousethemachine.
Fig.69 Solenoidvalvesforemergencydescent