11
4
1.Check to ensure that the speed drive housing temperature is not extremely high during operation.
* A temperature of up to approximately 50ºC higher than the ambient temperature will not cause any problems.
2.Check to ensure that there are no abnormal rolling sounds with the bearings and/or friction
transmission parts.
3.Check to ensure that abnormal vibration is not being generated from the speed drive.
* If any of these abnormal events occur, stop operation immediately, disassemble and inspect the unit, or contact us.
4.Confirm that oil has been supplied at the specified level of the oil gauge (Check when the unit stops).
5.Check to ensure that the oil has not been contaminated. Check to ensure that oil gauge is
transparent enough.
6.Check to ensure that there is no oil leakage anywhere (for example, in oil seals on the input and
output shaft parts, O-rings, oil gauge, and/or the area around the oil filling and drain ports, etc.).
* If any oil leakage occurs, replace the necessary parts, or contact us.
1.Check to ensure that there is no excessive overload.
2.Check to ensure that pulleys, sprockets, and speed drive mounting
bolts are not loose.
3.Check to ensure that there are no problems in the electrical system.
4. Inspect and maintain major parts.
* If abnormal sounds occur inside of the speed drive, stop operation immediately,
disassemble and inspect the unit, or contact us.
5.Check to ensure that the specified time of replacement for
lubricating oil has not passed.
* Check to ensure that oil level has not decreased, and that it's not dark in
color. Check the specified replacement interval.
4-1 Daily inspection
4-2 Periodical inspection
Periodical Inspection
(approximately at least
every three months)
5
Troubleshooting
Symptoms
Possible causes
Remedies
When load is applied
The unit does not
rotate (drive)
Fuse has blown
Abnormal load may have been applied
After inspection, decrease load to the specified level
Fuse capacity may be insufficient
Replace with a fuse with the specified capacity
Load is excessive
Speed drive capacity may be insufficient
Check the model and type again
Pressure contact of the driving
surface may be defective
Inspect the pressure contact condition, and replace worn
parts, if necessary
The mated machine and its connecting mechanism have malfunctioned
After inspection, adjust or repair
The unit rotates
(drives)
Temperature has
increased abnormally
(overheating)
Pressure contact of the driving surface
may be excessive
Adjust the pressure contact condition
Voltage may decrease
Consult the power company
Load is excessive
After inspection, decrease load to the specified level
High viscosity oil
Replace with the specified or equivalent oil
The amount of oil may be excessive,
insufficient, or oil may be deteriorated
Replace with the specified or equivalent oil
(in the specified amount)
The rotation speed
has been unstable
The connecting part with the mated
machine may be defective
After inspection, adjust or repair
High viscosity oil
Replace with the specified or equivalent oil
Slipping occurs
Load is excessive
After inspection, decrease load to the specified level
Pressure contact of the driving
surface may be defective
Adjust the pressure contact condition
The driving surface may have been worn
Replace the ring and cone with normal parts
Slipping does not
occur
Electric power may decrease
Consult the power company
Load is excessive
After inspection, decrease load to the specified level
Abnormal sound
is heard
The unit may be running with the missing phase
(Three phases may be functioning as one phase)
Inspect electric wires, and/or consult the power company
Sound has changed
when changing the
speed
Bearing on the output side may be damaged
Replace the bearing
The drive surface on the output side
may be damaged
Replace the ring and cone with normal parts
Sound has not
changed even when
changing the speed
Bearing on the input side may be damaged
Replace the bearing
The drive surface on the input
shaft side may be damaged
Replace the ring and cone with normal parts
When no load is applied
The motor key section may be damaged
Replace the key and shaft with normal parts
The unit does not rotate (start)
The ring and cone may be disconnected
Reapir the unit
The ring and cone may have contact failure
Adjust the shim
Fuse may have blown
Adjust terminal contact, or replace the fuse
The switch may have contact failure
Adjust the contact part
The stator coil may have been disconnected
Repair at a specialized factory
The connecting wire may have been
disconnected
After inspecting the disconnected part, replace
Bearing may be damaged
Replace the bearing
The connecting wire may have been
disconnected in one phase
Replace with a complete set
The unit rotates
(starts)
The unit rotates
in the reverse direction
Wiring connection may be incorrect
Replace two of three power leads
The rotation speed
has not increased
The switch may have contact failure
(Governor switch on the single phase)
Adjust the contact part
The stator coil may have been
short-circuited in one phase
Repair at a specialized factory
The rotor may come into contact with the stator
Replace the bearing, or repair at a specialized factory
High viscosity oil
Replace with the specified or equivalent oil
The driving surface may have been worn
Replace the driving part with a normal part
Abnormal sound
is heard
Sound has changed
when changing the
speed
Bearing on the output side may be damaged
Replace the bearing
The drive surface on the output side
may be damaged
Replace the ring and cone with normal parts
Sound has not
changed even when
changing the speed
Bearing on the input side may be damaged
Replace the bearing
The drive surface on the input shaft side
may be damaged
Replace the ring and cone with normal parts
The motor key section may be damaged
Replace the key and shaft with normal parts
● Oil leakage occurs
O-ring may be defective
Replace the deformed or cracked O-ring with a normal part
Oil seal may be defective
Replace the hardened or deformed oil seal with a normal part
Mounting bolts may be loose
Tighten the bolts properly
Lubricating oil may be excessive
Adjust to the specified amount
Packing or bonding agent
may not have been fixed
Apply the bonding agent evenly Replace the packing
with a normal part
The pressure-release rubber plug
may have been left
Remove the rubber plug
Содержание RINDCODE NRX Series
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