COMEUP Compact Winch (Ver:00) - Manual (Page 17)

15
Trouble Shootings
Checking the winch for smooth operation by pressing ↑ or ↓ 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 motor
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
Brunt diode Replace diode and pay attention to its poles
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
Loose adjustable nut Adjust
Burn diode Replace diode and pay attention to its poles
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
Fail to hold the
load after
stopping
The gap of ratchet brake is too large Adjust the ratchet brake
Malfunction of pressed spring of ratchet brake Replace pressed spring
The oil is too dirty or includes contamination
Replace oil
Having too much oil in gear box Reduce the quantity of oil
Brake distance is
too long at no
load
Malfunction of D type resistor Check or replace D type resistor
Having smell or
smoke
Malfunction of pressed spring of ratchet brake Replace pressed spring
Burnt D type resistor
Replace D type resistor
Malfunction of B contact of the pendant switch Replace pendant switch
Too noise whiling
lifting
The noise result from the click between ratchet
stopper and wheel
It is normal