Cyclo® HBB
46 Operation & Maintenance Manual
Cyclo® HBB
Troubleshooting
Problem with the Motor Possible Causes Suggested Remedy.
Load is
disconnected
but motor does
not rotate
Makesa
“groaning” sound
Faulty switch contact Adjust the contact.
Blown fuse Replace fuse.
One phase wire of the power supply
open.
Replace.
Stator coil open
Repair by rewinding or replacing the stator assembly.
Stator and rotor touching due to bearing
housing wear.
Replacethebearingandbracket.
Rotates in either
direction when turned
by hand
Three-phase is operating as singlephase Checkthepowersourcewithavoltmeter.
Doesn’tmakeany
noise
Stator coil open Repair by rewinding or replacing stator assembly
External power failure Contact the local power company.
Open connection wire. Checkthesourcewiring.
Faulty switch contact
Faulty starter contact
Adjust the contacts.
Rotates with
the load
disconnected
but:
Rotates in the wrong
direction
Connection error Change any two of the three-phase source connections.
Fuse blows Shorted lead wire Replace
Speed does not increase Faulty starter contact Adjust
“Groans”
Excessive Current / Overheating due to
rotor and stator touching
Repair by rewinding or replacing stator assembly.
Excessive current due to one phase of
stator coil shorted.
Replace the stator winding.
Makesahighpitched
“metallic” noise
Faulty bearing Replace the bearing.
Rotates when
the load is
disconnected
but when the
load is
connected:
Switch overheats
Insufficient switch capacity Replace with switch having the rated capacity.
Overload Decrease load to the rated level.
Fuse blows Insufficient fuse capacity Replace with fuse having the rated capacity.
Overheats
Overload Decrease load to rated value.
Voltage drop Consult with local power company.
Speed suddenly drops
Voltage drop Consult with local power company.
Overload Decrease load to rated value.
Stops Bearing damaged by overheating Replace the bearings.