Drive Chain Alignment And Tension - HYTROL 190-ACC Manual De Instalación Y Mantenimiento

• Belt Replacement
mOdEL "ACC"
Take-up brackets with sheaves are located at both ends of conveyor section
to adjust belt tension. (figure 8A)
To tighten belt, remove take-up sheave and re-position in another hole closer
to double groove sheave.
To loosen belt, move take-up sheave in opposite direction.
NOTE: It is recommended that both take-up sheaves be moved when
making adjustments.
FIGURE 9A
(Figura 9a)
TAKE-UP SCREW
(tOrnIllO tensOr)
TAKE-UP SHEAVE
(pOlea tensOra)
DRIVE BELT
(banda mOtrIz)

• Drive Chain Alignment and Tension

The drive chain and sprockets should be checked periodically for proper ten-
sion 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 straight edge across the face of
both sprockets (figure 9C).
3. Loosen set screws and adjust as needed. Re-tighten set screws.
4. To adjust chain tension, loosen bolts that fasten motor base to mounting
angles, both sides of the conveyor. Tighten take-up bolts until desired chain
tension is reached. (figures 9d & 9E). Re-tighten mounting bolts.
5. Lubricate chain per lubrication instructions. (Page 8)
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 9D (Figura 9d)
CHAIN TOO TIGHT
(REQUIRES EXTRA POWER)
(Cadena demasIadO tensa
[reQUIere mÁs pOtenCIa])
CORRECT SLACK
(tensIón COrreCta)
JAM NUT
(COntra tUerCa)
TIGHTEN
(apretar)
LOOSEN (aFlOJar)
IDLER SHEAVES
(pOleas de retOrnO)
CAUTION!
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.)
mOdELS "LRC" & "LRS"
The models "LRC" & "LRS" have a take-up bracket located near the center on
the underside of the conveyor. To adjust the belt tension, loosen the jam nuts
on the take-up screw and move take-up sheave as indicated in figure 9A.
mOdEL "LRSS"
Belt take-up is provided at the spur (pointed) end of the model "LRSS".
(figure 9B)
To adjust, loosen mounting bolt and move sheave until proper tension is
reached. Re-tighten mounting bolt.
SHEAVE MOUNTING BOLT
(tOrnIllO de mOntaJe de la pOleas)
FIGURE 9C
(Figura 9C)
DRIVE SHAFT
SPROCKET
(eJe de
transmIsIón)
FIGURE 9E
(Figura 9e)
MOTOR BASE PLATE
(plaCa de la base
del mOtOr)
DRIVE
PULLEY
(pOlea
mOtrIz)
DRIVE PULLEY
SPROCKET
(CatarIna de la
pOlea mOtrIz)
9
FIGURE 9B
(Figura 9b)
BELT
(banda)
V-BELT SHEAVE
(pOlea de banda en V)
TAKE-UP SCREW
(tOrnIllO tensOr)
TAKE-UP BRACKET
(sOpOrte tensOr)
STRAIGHT EDGE
(nIVel)
SET SCREWS
(tOrnIllOs) (CatarIna del
GEAR REDUCER
(redUCtOr)
(tOrnIllOs de
mOntaJe)
MOTOR/REDUCER
DRIVE
(mOtOr/redUCtOr
(CatarIna del
mOtrIz)
redUCtOr)
REDUCER
SPROCKET
redUCtOr)
MOUNTING
BOLTS
TAKE-UP
BOLTS
(tOrnIllOs
tensOres)
REDUCER
SPROCKET