Aerial work platforms are indispensable
equipment for elevated operations in construction, equipment installation, and
maintenance. Should buttons become unresponsive or fail to operate while the
platform is elevated to heights of several meters or even tens of meters, it
not only disrupts work progress but also poses significant safety risks. In
such situations, operators must remain calm and avoid panic. Implementing
proper emergency procedures and troubleshooting measures is crucial for
ensuring personnel safety.
Based on field experience, emergency
handling and preliminary checks for button malfunctions on aerial work
platforms can be conducted through the following steps:
Verify Power Supply Status
First, inspect whether the external power
source or the equipment's power supply system is properly connected. The
lifting operation of aerial work platforms relies on electric power. If the
power is disconnected, insufficient, or abnormal, the equipment will fail to
ascend normally, and the control buttons may become unresponsive.
Before confirming a power issue, avoid
repeatedly pressing the lift button to prevent misdiagnosis.
Utilize Platform Self-Weight for Emergency Descent
Note that the descent process typically
does not rely on electrical power but instead uses the equipment's own weight,
achieving a smooth descent through the hydraulic system. When buttons
malfunction or power is interrupted, directly operate the descent button or
activate the emergency descent function to open the hydraulic valve, allowing
the platform to safely lower.
This design is one of the critical safety
features of aerial work platforms. Operators should familiarize themselves with
the emergency descent procedures before use.
Inspect Electrical Switches and Wiring Connections
After ensuring personnel have descended
safely, proceed to inspect the electrical system. Focus on checking whether
electrical switches exhibit loose wiring, poor contact, or other issues. If
wiring connections are normal and switch statuses are intact, electrical system
faults can be preliminarily ruled out.
If obvious problems are found in electrical
components, promptly repair or replace them to prevent operating the equipment
with faults.
Check for Solenoid Valve Sticking
Solenoid valve sticking is another common
cause of button failure. When solenoid valves malfunction, hydraulic system
response becomes sluggish or fails, impacting equipment operation.
If solenoid valve issues are suspected,
safely press the solenoid valve plunger to fully lower the platform.
Subsequently clean, inspect, or replace the solenoid valve as necessary.
Inspect Hydraulic Hoses and Fluid Condition
Blocked hydraulic hoses or degraded fluid
quality can also cause abnormal platform operation. Verify hose integrity for
kinks, obstructions, or poor flow. Additionally, use high-quality hydraulic
fluid meeting specifications to prevent impurities or viscosity issues from
disrupting system function.
When abnormal situations such as button
malfunctions occur during aerial platform operation, the most critical step is
to remain calm. Prioritize personnel safety by activating the emergency descent
function before conducting systematic equipment inspection and maintenance.
Aerial work platforms are equipped with corresponding safety protection and
emergency devices. Adhering to standard operating procedures, performing
regular inspections, and conducting timely maintenance are key to ensuring safe
and stable aerial operations.
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