COMEUP Baby Winch (Ver:03) - Manual (Page 18)

16
Trouble Shootings
Checking the winch for smooth operation by pressing up and down button of pendant switch.
When winch fails to start after several attempts, or if any defective operation to be happened,
check followings.
Symptom Possible cause Remedy
No reaction or
open circuit
Open circuit on power lead or switch cord Check power lead or switch cord
Burnt rectifier at power source side Replace rectifier and pay attention to its poles
Burnt motor Replace motor
Burnt or communicated motor resulting from
over load.
Replace
Improper installation or wearing of carbon
brush
Check or replace carbon brush
Escape or open circuit of carbon brush lead Check or replace carbon brush lead
Can lift, but fail to
lower
Deformation of Down spring plate of limit
switch
Adjust or re-stall the limit switch until having
sound
Brunt diode Replace diode and pay attention to its poles
Burnt limit switch Replace limit switch
Burnt rectifier at motor side Replace rectifier and pay attention to its poles
Malfunction of the Down contact of the pendant
switch
Replace pendant switch
Can lower, but fail
to lift
Deformation of Up spring plate of limit switch
Adjust or re-stall the limit switch until having
sound
Burnt limit switch Replace limit switch
Loose of the transmitting arm resulting in
malfunction of Down limit switch
Adjust
Loose adjustable nut Adjust
Burn diode Replace diode and pay attention to its poles
Burnt Up limit switch Replace pendant switch
Burnt rectifier at motor side Replace rectifier and pay attention to its poles
Malfunction of the Up contact of the pendant
switch
Replace pendant switch
Short circuit
Melted B contact of pendant switch Replace pendant switch
Burnt diode Replace diode and pay attention to its poles
Short circuit on rectifier at motor side Replace rectifier and pay attention to its poles
Burnt D type resistor Replace resistor
Having too much carbon powder on carbon
brush holder
Disassembly the winch and clean carbon
powder
Burnt motor Replace motor
Damaged circuit board resulting from the
winding-in of rope
Replace circuit board
Fail to lift the load
rated
Overload Reduce load
Short circuit on the commutator of the armature
core or burnt parts of armature coils.
Replace commutator of the armature core
Burnt parts of armature winding. Replace armature winding
Incorrect carbon brush specification or too
short
Replace carbon brush
Burnt, deformation of carbon brush holder Replace carbon brush holder