User manual | RVA Rotary valves
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11
5.2 Connecting the detector
CAUTION
! Before any manipulation to the rotary valve, make sure that the motor is stopped and that all electrical
connections are disconnected.
NOTE
: all electrical manipulations should be performed by qualified personnel only.
DU-6 connection :
M18 optical connection
:
6. Troubleshooting
Failure
Possible causes
Proposed solutions
Rotary valve
switches off
thermally
Foreign body got stuck
Rotor frozen
Gear motor defective
Rotor defective
Motor protection set incorrectly
Fuse defective
Big voltage drop in power supply
Remove foreign body
Thaw on the outside with hot air or water
Replace motor, or gearbox
Replace rotor
Adjust the motor protection
Replace fuse
Insure voltage consistency
Rotary valve
is not turning
Working switch is off
Motor protection switched of thermally
Conditions of operation are not met in the control
system
Fuse defective
It might be that something is stuck in the rotary valve
It might be that the motor or gearbox is broken
It might be that the motor or gearbox shaft key is
broken
Stop the installation, switch on the working
switch
See “Rotary valve switches off thermally”
Investigate why conditions are not met
Investigate that nothing is stuck in the rotor
Investigate if a part is broken and needs to
be replaced
Rotary valve
makes
“screaming”
noise
Foreign body got stuck
Rotor/rotary valve body is defective
The rotor turns the wrong way
Remove foreign body
Replace defective component
Wire the motor correctly
The material
will not pass
the valve
without
accumulation
Volume of material per rotation is larger than planned
Airflow opposite through the rotary valve presents
proper material flow
Settling velocity of material less than expected
The material accumulates in lumps which cannot pass
The material is not removed fast enough at the outlet of
the rotary valve
Transported material is too big/bulky
Material agglutinates
Reduce the volume of material feed, or
replace rotary valve
More frequent regeneration
Shorter step-interval of chain conveyor
Adjust the production machine to change
the flow of material
Check the proper functioning of the
emptying system
Use the adequate rotary valve
Rotation disk
doesn’t’ turn
but rotor
does
Rotation disk and rotor axle are no longer consolidated Tighten rotation disk on rotor axle
Rotation
detector
doesn’t react
Cable is not connected
Improperly connected cables
Detection distance is too big or too short
Make sure cables are connected
Insure proper cable connection
Verify installation distance
If the problem persist, contact the installer or manufacturer.
NAMUR
NAMUR
NPN
