SATA AE5301S Manual Del Uso página 61

Fault symptom Cause
The hydraulic oil is too viscous or frozen and
deteriorated(in winter).
The lift descends slowly
The "explosion-proof valve" preventing the
with normal load.
blowout of the oil pipe is blocked.
The air in the hydraulic cylinder is not bled
completely.
The left and right
platforms are out of The oil pipe or joint leaks oil.
sync and not at the
same height. The oil-filling shutoff valve G or H can not be
closed tightly, therefore oil-filling is required
almost everyday.
Insufficient lubrication.
There is noise during
lifting and lowering.
The foundation or the machine is distorted.
The platform always
rises when the Down The time relay is loose or damaged.
button is pressed.
The solenoid valves of the main lift and sub lift
Main lift and sub lift rise
cannot return for the foreign matters in the
synchronously
valve core.
AE5301S/AE5301-3S
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Troubleshooting method
Change the hydraulic oil or increase the room temperature
according to the instruction.
Remove or close the intake pipe to lock the safety jaw
without lifting, remove the "explosion-proof valve" from
the oil inlet port at the bottom of the hydraulic cylinder and
clean it.
Refer to the procedures for oil-filling and leveling.
Tighten the joint or replace the oil seal, and then fill oil and
perform leveling.
Replace the oil-filling shutoff valve, and then fill oil and
perform leveling.
Apply oil at all hinges and moving parts (including piston
rods) to lubricate them.
Readjust the machine to make it level and fill (pad) the
foundation.
Reinsert or replace the time relay.
Turn the SA2 to the "OFF" position and press the Up
button or disassemble and clean the valve core.
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