17
PROBLEM
CAUSE
REMEDY
1. Conveyor does
not run when
switched on.
(1) Power plug is not properly
connected to mains.
(2) Power switch is not turned on.
(Reverse switch remains halfway.)
(3) Inappropriate power source
(1) Inspection, correction
(2) Inspection, correction
(3) Check power source. → See p.1
0.
2. Conveyor is
turned on, but
motor will not
run.
(1) Disconnection or breakage in wiring
(2) Conveyor speed is set too slow.
(3) Circuit protector or emergency stop
switch has been activated.
(4) Failure of motor or condenser
(1) Inspection, repair
(2) Reset to appropriate speed. → See p.1
0.
(3) Restore protection circuit or emergency
stop switch.
(4) Replacement (both motor and
condenser)
3. Motor runs,
but belt does not
move.
(1) Belt is slacked off.
(2) Belt is trapped after deviation.
(3) Motor gear head teeth have
become worn.
(1) Take up belt. → See p.1
3.
(2) Belt alignment adjustment → See p.1
4.
(3) Replacement (Replace motor also.)
→
See p.16.
4. Belt runs, but
speed cannot be
changed.
(for variable-
speed type)
(1) Disconnection or breakage in wiring
of motor and controller
(2) Failure of motor or controller
(1) Inspection, repair
(2) Replacement
5. Conveyor will
not start running
unless belt is
pulled.
(1) Belt has been taken up too much.
(2) Belt has something sticky on
undersurface.
(3) Belt has excessive resistance to
winding.
(Incorrect belt has been chosen.)
(1) Loosen belt to proper tension.
→ See p.1
3.
(2) Remove any foreign matter and clean
belt undersurface, or replace motor with
higher capacity version.
(3) Replace belt, or replace motor with
higher capacity version.
→ See p.1
4.
6. Belt is not
correctly aligned.
(1) → See p.1
4.
(1) Belt alignment adjustment
7. Drive unit
makes abnormal
noise.
(1) Drive pulley bearing setting bolt(s)
has become loose.
(2) Sprocket setting bolt(s) has
become loose.
(1) Tighten setting bolt(s).
(2) Tighten setting bolt(s).
8. Motor has
become
damaged.
(1) Inappropriate power source
(2) Conveyor has been overloaded.
(3) Conveyor runs too quickly or too
slowly.
(4) Belt has been taken up too much.
(5) Belt is trapped after deviation.
(1) Check power source. → See p.1
0.
(2) Reduce load.
(3) Set at proper speed, or replace gear
head.
(4) Loosen belt to proper tension.
→ See p.1
3.
(5) Belt alignment adjustment
→ See p.1
4.
9. Electric shock
is received from
conveyor.
(1) Static electricity has been charged
in frames.
(2) Electric leakage
(1) Properly ground the machine.
→
See p.10.
(2) Inspection, investigation
11
INSPECTION AND MAINTENANCE
11-1. PROBLEMS AND REMEDIES
