Tabla de contenido
• Drive Chain Alignment and Tension
The drive chain and sprockets should be checked periodically for proper tension and
alignment. Improper adjustment will cause extensive wear to the drive components.
TO MAKE ADJUSTMENTS
1. Remove chain guard.
2. Check sprocket alignment by placing a straightedge across the face of both
sprockets (figure 8A). Loosen set screws and adjust as needed. Re-tighten set
screws.
3. To adjust chain tension, loosen bolts that fasten motor base to mounting angles,
both sides of the conveyor.
4. Tighten take-up bolts until desired chain tension is reached. (figures 8B & 8C).
Re-tighten mounting bolts.
5. Lubricate chain per lubrication instructions.
6. Replace chain guard so that it does not interfere with drive.
Never remove chain guards while the conveyor is running. Always replace guards
after adjustments are made.
FIGURE 8b
MOTOR bASE PLATE
(plaCa de la base
del mOtOr)
DRIVE
PULLEY
(pOlea
mOtrIz)
DRIVE PULLEY
SPROCKET
(CatarIna de la
pOlea mOtrIz)
• Trouble Shooting
The following charts list possible problems that may occur in the operation of the conveyor.
TROUbLE SHOOTING DRIVES
TROUbLE
Conveyor will not start or
1) Motor is overloaded.
motor quits frequently.
2) Motor is drawing too much current.
drive chain and sprockets
1) Lack of lubrication on chain causing chain stretch
wear excessively.
2) Sprockets are out of alignment.
3) Loose chain.
Loud popping or grinding
1) defective bearing.
noise.
2) Loose set screws in bearing.
3) Loose drive chain.
Motor or reducer over-
1) Conveyor is overloaded.
heating.
2) Low voltage to motor.
3) Low lubricant level in reducer.
Belt does not move, but
1) Conveyor is overloaded.
drive runs.
2) Belt is too loose.
3) Lagging on drive pulley is worn.
TROUbLE SHOOTING DRIVE bELT TRACKING
TROUbLE
Entire
length
of
belt
1) One or more idlers (usually near trouble spot) are
creeps off at one spot
only.
2) One conveyor section not level or square.
3) Material build-up on pulleys or idlers.
Belt creeps to one side at
1) Tail pulley, return idler, or snub idler near tail pul-
tail pulley.
Entire belt creeps to one
1) Conveyor not straight.
side.
2) Conveyor not level.
3) Material build-up on rollers, pulleys, or idlers.
CAUTION!
MOUNTING
bOLTS
(tOrnIllOs de
mOntaJe)
TAKE-UP
bOLTS
(tOrnIllOs
tensOres)
MOTOR/REDUCER
REDUCER
DRIVE
SPROCKET
(mOtOr/redUCtOr
(CatarIna del
mOtrIz)
redUCtOr)
CAUSE
which creates improper chain to sprocket mesh.
CAUSE
out of line.
ley not properly aligned or square with bed.
FIGURE 8A
STRAIGHT EdGE
DRIVE SHAFT
SET SCREWS
SPROCKET
(eJe de
transmIsIón)
FIGURE 8C
CHAIN TOO TIGHT
(REQUIRES EXTRA POWER)
(Cadena demasIadO tensa
[reQUIere mÁs pOtenCIa])
CORRECT SLACK
(tensIón COrreCta)
1) Check for overloading of conveyor.
2) Check heater or circuit breaker and change if necessary.
1) Replace chain and sprockets. Provide adequate lubrication. NOTE: If
problem reoccurs, a chain take-up may be required.
2) Align sprockets. See "drive Chain Alignment and Tension".
3) Tighten chain.
1) Replace bearing.
2) Tighten set screw.
3) Tighten chain.
1) Check capacity of conveyor and reduce load to recommended level.
2) Have electrician check and correct as necessary.
3) Relubricate per manufacturer's recommendations. for HYTROL
reducer, refer to separate manual.
1) Reduce load.
2) Use belt take-up to tighten belt.
3) Replace drive pulley lagging and tighten belt.
1) Adjust idlers as necessary. See "Tracking the belt" in this manual for
details.
2) Make necessary adjustments to supports.
3) Remove residue from pulleys or idlers. Install belt, cleaners, or scrap-
pers if possible.
1) Adjust as necessary. See "Belt Tracking Pre-Tracking Inspection" in
this manual for details.
1) Re-align bed sections as necessary.
2) Correct as necessary.
3) Remove residue and install belt cleaners or scrapers if possible
8
(nIVel)
SPROCKET
(tOrnIllOs)
(CatarIna del
redUCtOr)
GEAR REDUCER
(redUCtOr)
CHAIN TOO LOOSE
(Cadena
demasIadO FlOJa)
SPROCKET CENTERS
(CentrOs de
CatarInas)
APPROX. 1/4" OR
2% OF SPROCKET CENTERS
(1/4" O 2% de CentrOs
entre CatarInas aprOX.)
SOLUTION
SOLUTION
REDUCER
Capítulos
Tabla de contenido
