9.1 Malfunction table
Symptom
Checkpoint
Possible cause
Action (Possible Solution)
Actuator w ill not extend/retract
No voltage or amp draw
No power given
Check power supply
Lack of plug contact or plug has not
been inserted properly
Check plug and insert properly
Defective cable or power plug (may
be damaged)
Send actuator for repair
Proper voltage, no amp draw
Thermal overload cut-out (when
overheated)
Let cool, check duty cycle
Dead motor
Send actuator for repair
Lifespan of the actuator is exceeded If the actuator has performed more
than 5 km double strokes, the actua-
tor needs to be replaced.
Proper voltage, amp draw present,
but clutch slips
Actuator overloaded
Check rated load or remove all obsta-
cles in the stroke area
Clutch worn
Send actuator for repair
LS activator damaged
Send actuator for repair
Proper voltage, amp draw present,
clutch not slips
Gear wheel or nut thread damaged
Send actuator for repair
Actuator stops in mid-stroke
Clutch slips, amperage present
Actuator overloaded
Check rated load or check voltage
(maybe too low)
Clutch doesn’t slip, no amperage
Thermal cut-out
Let cool, check duty cycle
Clutch doesn’t slip, amperage present Motor stalled
Check voltage too low
Actuator cannot lift full load or
Significantly reduced speed
Proper voltage, amp draw present
Cutch is worn
Send actuator for repair
Motor is damaged
Send actuator for repair
Insufficient power supply
Increase power supply
Voltage drop in cable
Thicker cable
Significant increase in noise
Big amperage
Obstacle in the stroke area of the
linear actuator
Remove all obstacles in the stroke
area
Big amperage
Incorrect load
Check rated load
Abnormal noise
Motor, gear or screw nut damaged
Send actuator for repair or replace
the actuator
No signal from POT or Hall sensor
No voltage
Lack of signal wires contact or plug
has not been inserted properly
Check connect and insert properly
Abnormal voltage present
Wrong connect led to components
failed
Send actuator for repair
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