I. Mechanical Failure
1. Stuck or unable to raise or lower
Possible causes: Dust accumulation on the rails, insufficient lubrication, or deformation of the mast (e.g., bending exceeding 1% of the length deviation).
Solution: Clean the rails and apply silicone grease. Severe deformation requires replacement.
2. Locking Mechanism Failure
Possible causes: Worn locking pins, broken springs, or insufficient shear force on the metal keys (common with aluminum alloys).
Solution: Replace the locking pins or upgrade to a self-locking brake mechanism (requires torque wrench calibration).
II. Electrical System Failure
1. No Motor Response
Possible causes: Blown fuse, poor power cord contact, or controller failure.
Solution: Check the AC input voltage (normal 220V ±10%), replace the fuse, or reset the controller.
2. Remote Control Malfunction
Possible causes: Signal interference (e.g., 433MHz band conflict) or low battery.
Solution: Replace the batteries and operate closer to the control box to eliminate interference from surrounding electronic devices. 3. Environmental Adaptability Failures
1. Decreased Sealing
Possible Cause: Aging of the seal ring (check quarterly) leading to internal rust.
Solution: Replace the seal ring and spray with rust-proof oil.
2. Extreme Weather Impact
Possible Cause: Low temperatures causing grease solidification or hydraulic oil leakage (for hydraulic masts).
Solution: Switch to low-temperature grease and prefer pneumatic systems over hydraulic systems.
4. Other Common Problems
Abnormal Noise: Poor worm gear engagement or bearing wear. Requires knocking, cleaning, or component replacement.
Abnormal Synchronization: Multiple mast sections are out of sync. Requires resetting the control system or checking the plug connections.
Maintenance Recommendations: Check lubrication monthly and replace carbon brushes every six months (replace if wear exceeds 50%).
For long-term storage, retract to the minimum length and cover with a dust cover.
