HYTROL 190-ACC User manual

Effective April 2011
(Supercedes September 2003)
Bulletin #634
190-LRS
190-ACC
190-LRC
190-LRSS
Installation
and
Maintenance
Manual
with Safety Information
and Parts List
RECOMMENDED SPARE PARTS HIGHLIGHTED IN GRAY
Model 190-ACC, LRC,
LRS & LRSS
Manual
de Instalación
y
Mantenimiento
con Información sobre Seguridad
y Lista de Refacciones
LAS REFACCIONES RECOMENDADAS SE RESALTAN EN GRIS
IMPORTANT!
DO NOT DESTROY
© COPYRIGHT 2009–HYTROL CONVEYOR CO., INC.
¡IMPORTANTE!
NO DESTRUIR
Hytrol Conveyor Co., Inc.
Jonesboro, Arkansas
PRESS OPTIMIZED FOR THE ENVIRONMENT
(IMPRESIÓN OPTIMIZADA PARA PROTEGER EL MEDIO AMBIENTE)

TABLE OF CONTENTS
INTRODUCTION
Receiving and Uncrating ....................2
How to Order Replacement Parts .............2
SAFETY INFORMATION
Installation Safety Precautions ...............3
Operation Safety Precautions ................3
Maintenance .............................3
INSTALLATION
Support Installation ........................4
Ceiling Hanger Installation ..................4
Conveyor Set-Up........................4,5
Connecting the V-Belts ...................5,6
Racked Sections . . . . . . . . . . . . . . . . . . . . . . . . . .6
Pressure Adjustment .....................6,7
OPERATION
Conveyor Start-Up.........................7
MAINTENANCE
Maintenance Safety Precautions..............7
Electrical Equipment .......................7
Lubrication ...............................8
Belt Replacement .......................8,9
Drive Chain Alignment and Tension ...........9
Trouble Shooting .........................10
Maintenance Checklist .............back cover
External Slave Drive ...................10,11
REPLACEMENT PARTS
Model 190-ACC Parts Drawing ..............12
Model 190-ACC Parts List..................13
Model 190-LRC 90 Deg Parts Drawing & List...14
Model 190-LRC 60 Deg Parts Drawing & List...15
Model 190-LRC 45 Deg Parts Drawing & List...16
Model 190-LRC 30 Deg Parts Drawing & List...17
Model 190-LRS 45 Deg Parts Drawing & List...18
Model 190-LRS 30 Deg Parts Drawing & List...19
Model 190-LRSS 45 Deg Parts Drawing & List .20
Model 190-LRSS 30 Deg Parts Drawing & List .21
Sub Assemblies and Parts List ...........22,23
Sheave Retainers Drawing & Parts List .......23
Slave Connection Drawing & Parts List .......11
Spanish Version .........................24
INTRODUCTION
This manual provides guidelines and procedures for installing, operating,
and maintaining your conveyor. A complete parts list is provided with rec-
ommended spare parts highlighted in gray. Important safety information is
also provided throughout the manual. For safety to personnel and for proper
operation of your conveyor, it is recommended that you read and follow the
instructions provided in this manual.
• Receiving and Uncrating
1. Check the number of items received against the bill of lading.
2. Examine condition of equipment to determine if any damage
occurred during shipment.
3. Move all crates to area of installation.
4. Remove crating and check for optional equipment that may be fastened to
the conveyor. Make sure these parts (or any foreign pieces) are removed.
• How to Order Replacement Parts
Included in this manual are parts drawings with complete replacement parts
lists. Minor fasteners, such as nuts and bolts, are not included.
When ordering replacement parts:
1. Contact Dealer from whom conveyor was purchased or nearest
HYTROL Distributor.
2. Give Conveyor Model Number and Serial Number or HYTROL Factory
Order Number.
3. Give Part Number and complete description from Parts List.
4. Give type of drive. Example—8” End Drive, 8” Center Drive, etc.
5. If you are in a breakdown situation, tell us.
HYTROL Serial Number
(Located near Drive on Powered Models).
NOTE: If damage has occurred or freight is missing,
Contact your Hytrol distributor.
JONESBORO, ARKANSAS
Model
XX
Hytrol Conveyor
Company, Inc.
SERIAL # H978-7-4
2011
2

SAFETY INFORMATION
• Installation
GUARDS AND GUARDING
Interfacing of Equipment. When two or more pieces of equipment
are interfaced, special attention shall be given to the interfaced area
to insure the presence of adequate guarding and safety devices.
Guarding Exceptions. Whenever conditions prevail that would
require guarding under these standards, but such guarding would
render the conveyor unusable, prominent warning means shall be
provided in the area or on the equipment in lieu of guarding.
Guarded by Location or Position. Where necessary for the
protection of employees from hazards, all exposed moving machinery
parts that present a hazard to employees at their work station shall
be mechanically or electrically guarded, or guarded by location or
position.
Remoteness from frequent presence of public or employed•
personnel shall constitute guarding by location.
When a conveyor passes over a walkway, roadway, or work•
station, it is considered guarded solely by location or position if all
movingpartsareatleast8ft.(2.44m)abovetheoororwalking
surface or are otherwise located so that the employee cannot
inadvertently come in contact with hazardous moving parts.
Although overhead conveyors may be guarded by location, spill•
guards, pan guards, or equivalent shall be provided if the product
may fall off the conveyor for any reason and if personnel would
be endangered.
HEADROOM
When conveyors are installed above exit passageways, aisles,•
or corridors, there shall be provided a minimum clearance of 6
ft.8in.(2.032m)measuredverticallyfromtheoorororwalking
surface to the lowest part of the conveyor or guards.
Where system function will be impaired by providing the minimum•
clearance of 6 ft. 8 in. (2.032 m) through an emergency clearance,
alternate passageways shall be provided.
It is permissible to allow passage under conveyors with less•
that6ft.8in.(2.032m)clearancefromtheoorforotherthan
emergency exits if a suitable warning indicates low headroom.
• Operation
A) Only trained employees shall be permitted to operate conveyors.
Training shall include instruction in operation under normal conditions
and emergency situations.
B) Where employee safety is dependent upon stopping and/or
starting devices, they shall be kept free of obstructions to permit
ready access.
C) The area around loading and unloading points shall be kept clear
of obstructions which could endanger personnel.
D) No person shall ride the load-carrying element of a conveyor
underanycircumstancesunlessthatpersonisspecicallyauthorized
by the owner or employer to do so. Under those circumstances, such
employee shall only ride a conveyor which incorporates within its
supportingstructureplatformsorcontrolstationsspecicallydesigned
for carrying personnel. Under no circumstances shall any person ride
on any element of a vertical conveyor.
E) Personnel working on or near a conveyor shall be instructed as to
the location and operation of pertinent stopping devices.
F) A conveyor shall be used to transport only material it is capable of
handling safely.
G) Under no circumstances shall the safety characteristics of the
conveyor be altered if such alterations would endanger personnel.
H) Routine inspections and preventive and corrective maintenance
programs shall be conducted to insure that all safety features and
devices are retained and function properly.
I) Personnel should be alerted to the potential hazard of entanglement
in conveyors caused by items such as long hair, loose clothing, and
jewelry.
J) Conveyors shall not be maintained or serviced while in operation
unless proper maintenance or service requires the conveyor to be in
motion. In this case, personnel shall be made aware of the hazards
and how the task may be safely accomplished.
K)Ownersofconveyorshouldinsurepropersafetylabelsareafxed
to the conveyor warning of particular hazards involved in operation of
their conveyors.
• Maintenance
All maintenance, including lubrication and adjustments, shall be•
performedonlybyqualiedandtrainedpersonnel.
It is important that a maintenance program be established to•
insure that all conveyor components are maintained in a condition
which does not constitute a hazard to personnel.
When a conveyor is stopped for maintenance purposes, starting•
devices or powered accessories shall be locked or tagged out
in accordance with a formalized procedure designed to protect
all persons or groups involved with the conveyor against an
unexpected start.
Replace all safety devices and guards before starting equipment•
for normal operation.
Whenever practical, DO NOT lubricate conveyors while they are•
in motion. Only trained personnel who are aware of the hazard
of the conveyor in motion shall be allowed to lubricate.
Safety Guards
Maintain all guards and safety devices IN POSITION and IN SAFE
REPAIR.
Safety Labels
In an effort to reduce the possibility of injury to personnel working
around HYTROL conveying equipment, safety labels are placed at
various points on the equipment to alert them of potential hazards.
Please check equipment and note all safety labels. Make certain
your personnel are alerted to and obey these warnings. See Safety
Manual for examples of warning labels.
CAUTION!
Because of the many moving parts on the conveyor, all
personnel in the area of the conveyor need to be warned
that the conveyor is about to be started.
CAUTION!
Only trained personnel should track a conveyor belt which must be done
while conveyor is in operation. DO NOT attempt to track belt if conveyor is
loaded.
Remember
Do not remove, reuse or modify material handling equipment for any
purpose other than it’s original intended use.
3

INSTALLATION
• Support Installation
1. Determine primary direction of product flow. Figure 4A indicates the preferred flow as related to the drive.
2. Refer to “Match-Mark” numbers on ends of conveyor sections. (Figure 4A) Position them in this sequence near the area of installation.
3. Attach supports to both ends of drive section and to one end of intermediate or tail sections (Figure 4A). Hand tighten bolts only at this time. Conveyors
angle of incline will determine where the knee brace mounting brackets are to be placed when required.
4. Adjust elevation to required height.
• Ceiling Hanger Installation
If conveyors are to be used in an overhead application, ceiling hangers may
have been supplied in place of floor supports.
Figure 4B shows how a ceiling hanger mounts to a conveyor section.
Ceiling hangers should be mounted at section joints. For safety informa-
tion concerning conveyors mounted overhead, refer to “Installation Safety
Precautions” on Pg 3.
• Conveyor Set-Up
1. Mark a chalk line on floor to locate center of the conveyor (Floor Mounted
Conveyors).
2. Place the drive section in position.
3. Install remaining sections placing end without support on extend support
of previous section (Figure 4A). Check “Match Mark” Numbers to see that
adjoining sections are in proper sequence
4. Fasten sections together with splice plates and pivot plates (Figure 4C).
Hand tighten bolts only.
5. Check to see that conveyor is level across width and length of unit. Adjust
supports and ceiling hangers as necessary.
6. Install electrical controls and wire motor.
7. Install and track belt per instructions on Belt Installation and Belt
Tracking.
CEILING HANGER ROD
SIDE CHANNEL
PIPE RETAINER
MOUNTING BOLTS LOCK BOLT
JAM NUT
SUPPORT PIPE
JAM NUT
SPACER
FIGURE 4B
(VARILLA COLGANTE AL TECHO)
(CANAL LATERAL)
(ABRAZADERA)
(TORNILLO DE MONTAJE) (TORNILLO CANDADO)
(CONTRA TUERCA)
(TUBO DE SOPORTE)
(CONTRA TUERCA)
(ESPACIADOR)
(Figura 4B)
NOTE: When installing ceiling hanger rods in an existing building, all
methods of attachment must comply with local building codes.
FIGURE 4C
STATIONARY SUPPORT
PIVOT PLATE
SPLICE PLATE
SIDE CHANNEL
MOUNTING BOLT
SIDE CHANNEL
(CANAL LATERAL)
(TORNILLO DE MONTAJE)
(CANAL LATERAL)
(PLACA DE UNION)
(PLACA PIVOTE)
(SOPORTE ESTACIONARIO)
(Figura 4C)
4

• Conveyor Set-Up
• Connecting the V-Belts Model ACC
The double groove sheave, located at one end of each conveyor section, is used to connect the driving V-Belts of the conveyor. The groove in which each
belt is placed is predetermined at the factory. (Figure 5C)
Beginning with the drive bed section, the drive V-Belt is installed in the outside groove of the sheave. From this point on, (in both directions) the belts will
alternate from inside to outside groove. (Figure 5D)
Note that take-up sheaves have been installed to align the V-Belt with the respective grooves on the double groove sheaves. (Figure 9B)
FIGURE 5A
INTERMEDIATE
SECTION
“MATCH-MARK”
NUMBERS
DRIVE SECTION
(SECCIÓN MOTRIZ)
(SECCIÓN
INTERMEDIA)
(NÚMERO DE
ETIQUETAS DE
ARMADO)
MATCH MARKS
(ETIQUETAS DE ARMADO)
CENTER SUPPORT
END GUARD
(SOPORTE CENTRAL)
(GUARDA DEL EXTREMO)
ACC LRC
(Figura 5A)
“MATCH-MARK” NUMBERS
(Número de Etiqueta de Armado)
“A”
“K” BRACKET
(Abrazadera “K”)
SPUR CHANNEL
(Canal de la Espuela)
ADJOINING CONVEYOR CHANNEL
(Canal del Transportador Adyacente)
DETAIL “A”
FIGURE 5B
(Figura 5B)
(Detalle “A”)
DOUBLE GROOVE SHEAVE
(POLEA DE DOBLE RANURA)
OUTSIDE GROOVE INSIDE GROOVE
(RANURA EXTERIOR) (RANURA INTERIOR)
FIGURE 5C
(Figura 8B)
LONG INSIDE BELT
(BANDA LARGA INTERIOR)
DRIVE BED SECTION
(Cama de la Sección Motriz) LONG OUTSIDE BELT
(BANDA LARGA EXTERIOR) SHORT “END” BELT
(BANDA CORTA DEL EXTREMO)
DRIVE CHAIN
(CADENA MOTRIZ)
ANY REQUIRED LENGTH
(LONGITUD REQUERIDA)
FIGURE 5D (Figura 5D)
CAUTION!
Under no circumstances, attempt to install any V-belt while operating the
drive motor. Personal injury may occur.
5

TO CONNECT THE V-BELT
1. Remove the front cover of the chain guard and disconnect the drive chain. This will free the drive sheave so belts may be installed.
2. Remove five tread rollers from both ends of each conveyor section (Figure 6A). This is done by depressing one end of the spring-loaded shaft.
3. Note sections with a belt in the outside groove. Install these belts to adjoining sections first. Carfully roll the belts to the outside grooves by rotating the
double sheaves.
4. Place drive belt over take-up sheave located near double groove sheave.
5. Install all remining belts in the inside groove.
6. Reconnect the drive chain and replace the front cover of chain guard.
7. Replace all tread rollers.
• Racked Sections
It is important that each bed section be checked for a “racked” or out-of-square condition. If conveyor is not square, tracking problems will result. Figure 6B
indicates a racked section.
TO CORRECT AN OUT-OF-SQUARE SECTION
1. Locate points on corners of section and measure distance “A” & “B”. If the dimensions are not equal, the section will need to be squared. (Figure 6C).
2. Use crossbracing supplied on underside of conveyor to square each section. Adjust turnbuckle until Dimensions “A” & “B” are equal.
3. After all bed sections have been checked and corrected for “racked condition”, tighten all butt couplings and pivot plate bolts.
4. Make final check to see that all conveyor sections are level across width and length. If entire conveyor is level, supports can be lagged to floor.
• Pressure Adjustment
MODEL “ACC” (FIGURE 7A)
The “ACC” is equipped with suspension angles that support the pressure rollers and hold the drive V-Belt in contact with the tread rollers. Knurled nuts allow
the conveyor to be finely adjusted for minimum pressure accumulation. To make this adjustment, follow the steps listed below.
1. With conveyor running, reduce pressure on all tread rollers to zero by loosening the knurled adjustment nuts.
2. Place heaviest item to be conveyed on infeed end of conveyor. Increase pressure under the item by tightening the knurled nuts. Apply only enough pres-
sure to slightly move the item.
3. As the item moves, continue adjustment ahead of item until it moves the entire length of conveyor.
4. Return item to infeed end of unit. It should now travel the entire length of conveyor. If not, repeat the adjustment procedure in the problem area.
MODEL “LRC” , “LRS” , “LRSS” (FIGURE 7B)
Curves and spurs have snub sheaves that hold the drive V-Belt in contact with its tread rollers. Adjustments are made by moving the snub sheaves up or
down in the slotted conveyor channel.
When making adjustments, apply only enough force to move the heaviest item to be conveyed.
CAUTION!
During installation, do not use tools such as screw-drivers, wrenches etc., or
damage to the V-belts could occur.
DRIVE V-BELT TREAD ROLLER
DOUBLE GROOVE SHEAVE TAKE-UP SHEAVE
(BANDA-V MOTRIZ)
(POLEA DE DOBLE RANURA)
(RODILLO DE TRANSPORTACIÓN)
(POLEA TENSORA DE LA BANDA-V)
FIGURE 6A
VIEW “Y-Y”
(VISTA “Y-Y”)
(Figura 6A)
IMPORTANT!
Being out of level across width of conveyor can cause package drift on
long conveyor lines.
“Racked” conveyor sections will cause package to travel toward side
of conveyor.
ROLLERS NOT SQUARE
WITH SIDE CHANNELS
(RODILLOS DESCUADRADOS
CON CANALES LATERALES)
SIDE CHANNELS
(CANAL LATERAL)
FIGURE 6B
(Figura 6B)
FIGURE 6C
"A"
"B"
(CANAL LATERAL)
SIDE CHANNEL CROSSBRACING (LONG ROD)
FRAME SPACER
CROSSBRACING (SHORT ROD) TURNBUCKLE SIDE CHANNEL
(CANAL LATERAL)
(ESPACIADOR DE CAMA)
(TIRANTE TENSOR [VARILLA CORTA]) (TENSOR)
(TIRANTE TENSOR [VARILLA LARGA])
(Figura 6C)
6

• Pressure Adjustment
OPERATION
• Conveyor Start-Up
Before conveyor is turned on, check for foreign objects that may have been left inside conveyor during installation. These objects could cause serious damage
during start-up. After conveyor has been turned on and is operating, check motors, reducers, and moving parts to make sure they are working freely.
CAUTION
Snubbing the belt too much can cause the conveyor to stall.
TREAD ROLLER DRIVE V-BELT SPRING
KNURLED ADJUST-
MENT NUT
SUSPENSION
ANGLE
PRESSURE
ROLLER
(RODILLOS DE
TRANSPORTACIÓN)
(BANDA MOTRIZ-V) (RESORTE)
(RODILLO DE
PRESIÓN)
(ÁNGULO DE
SUSPENSIÓN)
(TUERCA DE AJUSTE)
FIGURE 7A (Figura 7A)
DRIVING V-BELT
TREAD ROLLERS
SNUB SHEAVE
SHEAVE ADJUST-
MENT BOLT
(BANDA MOTRIZ-V)
(RODILLOS DE
TRANSPORTACIÓN)
(POLEA DE RETORNO)
(TORNILLO DE AJUSTE
DE LA POLEA)
CORRECT
(CORRECTO) (INCORRECTO)
INCORRECT
FIGURE 7B
(Figura 7B)
CAUTION!
Because of the many moving parts on the conveyor, all personnel in the area of the conveyor need to be warned that the conveyor is about to be started.
MAINTENANCE
• Electrical Equipment
CONTROLS
Electrical Code: All motor controls and wiring shall conform to the National
Electrical Code (Article 670 or other applicable articles) as published by
the National Fire Protection Association and as approved by the American
Standards Institute, Inc.
CONTROL STATIONS
A) Control stations should be so arranged and located that the operation of
the equipment is visible from them, and shall be clearly marked or labeled to
indicate the function controlled.
B) A conveyor which would cause injury when started shall not be started
until employees in the area are alerted by a signal or by a designated person
that the conveyor is about to start.
When a conveyor would cause injury when started and is automatically
controlled or must be controlled from a remote location, an audible device
shall be provided which can be clearly heard at all points along the conveyor
where personnel may be present. The warning device shall be actuated by
the controller device starting the conveyor and shall continue for a required
period of time before the conveyor starts. A flashing light or similar visual
warning may be used in conjunction with or in place of the audible device if
more effective in particular circumstances.
Where system function would be seriously hindered or adversely affected
by the required time delay or where the intent of the warning may be misinter-
preted (i.e., a work area with many different conveyors and allied devices),
clear, concise, and legible warning shall be provided. The warning shall
indicate that conveyors and allied equipment may be started at any time, that
danger exists, and that personnel must keep clear. The warnings shall be
provided along the conveyor at areas not guarded by position or location.
C) Remotely and automatically controlled conveyors, and conveyors where
operator stations are not manned or are beyond voice and visual contact from
drive areas, loading areas, transfer points, and other potentially hazardous
locations on the conveyor path not guarded by location, position, or guards,
shall be furnished with emergency stop buttons, pull cords, limit switches, or
similar emergency stop devices.
All such emergency stop devices shall be easily identifiable in the imme-
diate vicinity of such locations unless guarded by location, position, or guards.
Where the design, function, and operation of such conveyor clearly is not
hazardous to personnel, an emergency stop device is not required.
The emergency stop device shall act directly on the control of the con-
veyor concerned and shall not depend on the stopping of any other equip-
ment. The emergency stop devices shall be installed so that they cannot be
overridden from other locations.
D) Inactive and unused actuators, controllers, and wiring should be removed
from control stations and panel boards, together with obsolete diagrams, indi-
cators, control labels, and other material which serve to confuse the opera-
tor.
SAFETY DEVICES
A) All safety devices, including wiring of electrical safety devices, shall be
arranged to operate in a “Fail-Safe” manner, that is, if power failure or failure
of the device itself would occur, a hazardous condition must not result.
B) Emergency Stops and Restarts. Conveyor controls shall be so arranged
that, in case of emergency stop, manual reset or start at the location where
the emergency stop was initiated, shall be required of the conveyor(s) and
associated equipment to resume operation.
C) Before restarting a conveyor which has been stopped because of an
emergency, an inspection of the conveyor shall be made and the cause of
the stoppage determined. The starting device shall be locked out before any
attempt is made to remove the cause of stoppage, unless operation is neces-
sary to determine the cause or to safely remove the stoppage.
Refer to ANSI Z244.1-1982, American National Standard for Personnel
Protection – Lockout/Tagout of Energy Sources – Minimum Safety
Requirements and OSHA Standard Number 29 CFR 1910.147 “The Control
of Hazardous Energy (Lockout/Tagout).”
WARNING!
Electrical controls shall be installed and wired by a qualified electrician.
Wiring information for the motor and controls are furnished by the equipment
manufacturer.
7

• Lubrication
The drive chain is pre-lubricated from the manufacturer by a hot dipping
process that ensures total lubrication of all components. However, continued
proper lubrication will greatly extend the useful life of every drive chain.
Drive Chain lubrication serves several purposes including:
 •Protectingagainstwearofthepin-bushingjoint
 •Lubricatingchain-sprocketcontactsurfaces
 •Preventingrustorcorrosion
For normal operating environments, lubricate every 2080 hours of operation
or every 6 months, whichever comes first. Lubricate with a good grade of
petroleum or synthetic oil (i.e., Shell Rotella or Mobil 1). For best results,
always use a brush to generously lubricate the chain. The proper viscos-
ity of lubricant greatly affects its ability to flow into the internal areas of the
chain. Refer to the table below for the proper viscosity of lubricant for your
application.
The drive chain’s lubrication requirement is greatly affected by the operating
conditions. For harsh conditions such as damp environments, dusty environ-
ments, excessive speeds, or elevated temperatures, it is best to lubricate
more frequently. It may be best, under these conditions, to develop a custom
lubrication schedule for your specific application. A custom lubrication sched-
ule may be developed by inspecting the drive chain on regular time intervals
for sufficient lubrication. Once the time interval is determined at which the
chain is not sufficiently lubricated, lubricate it and schedule the future lubrica-
tion intervals accordingly.
• Belt Replacement
MODEL “ACC”
1. Check length of section in which belt is to be replaced.
2. Determine if a “Long” or “Short” belt is needed. See (Figure 8A)
3. See Parts List for correct replacement number. (Pages 12-13). See notes
on page 9.
TO REPLACE BELT
1. Using knurled nuts, lower belt away from tread rollers in section where belt
is being replaced.
2. Remove five tread rollers from each end of section.
3. Remove all pressure rollers.
4. Replace belt and all rollers.
5. Adjust accumulation pressure per instructions. (Pg. 6)
MODEL “LRC” , “LRS” , & “LRSS”
1. Check Overall Frame Width (OAW) (Figure 8B).
2. Determine degree of curve or spur.
3. See respective Parts List for correct replacement number. (Pages 11-23).
See notes on page 9.
TO REPLACE BELT
1. Not how existing belt is installed.
2. Remove all tread rollers.
3. Replace belt and all rollers.
4. Adjust belt tension per instructions on page 9.
Ambient
Temperature
Degrees F
SAE ISO
20-40 20 46 or 68
40-100 30 100
100-120 40 150
CAUTION!
During installation, do not use tools such as screwdrivers, wrenches, etc., or
damage to the V-belts could occur.
SHORT V-BELT
(BANDA-V CORTA)
LONG V-BELT
(BANDA-V LARGA)
DETAIL A--A
SHEAVE BRACKET
(SOPORTE POLEA)
SPROCKET
(CATARINA)
NOTE: Special length V-belts are used on the “ACC” & “LRSS” convey-
ors. It is recommended that replacements be obtained from HYTROL.
The Models “LRC” & “LRS” use standard “B” section industrial grade
V-belts (Non-Glass Core). These belts may either be purchased from
HYTROL or local suppliers.
FLOW
9', 11', 12', 13', 14', 15', 16', 18' & 20' OAL
SHORT V-BELT
(BANDA-V CORTA)
LONG V-BELT
(BANDA-V LARGA)
PRESSURE ROLLERS
(RODILLOS DE PRESIÓN)
TAKE-UP SHEAVE
(POLEA TENSORA) DOUBLE GROOVE SHEAVE
(POLEA DE DOBLE RANURA)
TREAD ROLLERS
(RODILLOS DE TRANSPORTACIÓN)
AA
FIGURE 8A
OAW
BR
SHEAVE
(POLEA)
OUTSIDE GROOVE
INSIDE GROOVE
(RANURA EXTERIOR)
(RANURA INTERIOR)
FIGURE 8B
(Figura 8A)
(Figura 8B)
8

• 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.
• 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.
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.
NOTE: It is recommended that both take-up sheaves be moved when
making adjustments.
BELT
TAKE-UP SCREW
V-BELT SHEAVE
SHEAVE MOUNTING BOLT TAKE-UP BRACKET
(BANDA)
(TORNILLO TENSOR)
(POLEA DE BANDA-V)
(TORNILLO DE MONTAJE DE LA POLEAS) (SOPORTE TENSOR)
FIGURE 9B
(Figura 9B)
FIGURE 9A
(Figura 9A)
JAM NUT
TAKE-UP SCREW
TAKE-UP SHEAVE
DRIVE BELT IDLER SHEAVES
(TORNILLO TENSOR)
(CONTRA TUERCA)
(POLEA TENSORA)
(BANDA MOTRIZ) (POLEAS DE RETORNO)
TIGHTEN
LOOSEN
(APRETAR)
(AFLOJAR)
CAUTION!
Never remove chain guards while the conveyor is running. Always replace
guards after adjustments are made.
REDUCER
SPROCKET
GEAR REDUCER
DRIVE SHAFT
SPROCKET
SET SCREWS
STRAIGHT EDGE
(NIVEL)
(CATARINA DEL
REDUCTOR)
(TORNILLOS)
(EJE DE
TRANSMISIÓN)
(REDUCTOR)
FIGURE 9C (Figura 9C)
MOTOR/REDUCER
DRIVE
DRIVE
PULLEY
MOUNTING
BOLTS
(POLEA
MOTRIZ)
(TORNILLOS DE
MONTAJE)
(MOTOR/REDUCTOR
MOTRIZ)
DRIVE PULLEY
SPROCKET
(CATARINA DE LA
POLEA MOTRIZ)
REDUCER
SPROCKET
(CATARINA DEL
REDUCTOR)
TAKE-UP
BOLTS
(TORNILLOS
TENSORES)
MOTOR BASE PLATE
(PLACA DE LA BASE
DEL MOTOR)
FIGURE 9E
(Figura 9E)
CHAIN TOO TIGHT
(REQUIRES EXTRA POWER)
CHAIN TOO LOOSE
CORRECT SLACK APPROX. 1/4” OR
2% OF SPROCKET CENTERS
SPROCKET CENTERS
(CADENA DEMASIADO TENSA
[REQUIERE MÁS POTENCIA])
(CADENA
DEMASIADO FLOJA)
(TENSIÓN CORRECTA)
(1/4” O 2% DE CENTROS
ENTRE CATARINAS APROX.)
(CENTROS DE
CATARINAS)
FIGURE 9D (Figura 9D)
9

• External Slave Drive
TO INSTALL THE CONNECTING CHAIN
1. Remove sprockets and chain guard back plate as necessary so conveyors
can be connected together.
2. Fasten conveyors together with butt couplings and pivot plates. (Figure
4C, Page 4)
3. Attach chain guard back plate to bottom of conveyor frame. (Figure 11A)
4. Install sprockets and keys on shafts and align by placing straight edge
across the face of both sprockets. (Ref. Figure 9C) Adjust as needed and
tighten set screws.
5. Install chain around sprockets and insert connecting link. (Figure 10A,
Detail “A”) Tighten chain by adjusting take-up block. Note: If conveying in one
direction only, position take-up block on slack side of chain. If conveying in
both directions, position take-up block at bottom of chain as shown in Figures
10A and 11A.
6. Install chain guard front plate.
DRIVE BELT
SLAVE UNIT SHEAVE
DRIVE UNIT SHEAVE
TREAD ROLLERS
CONNECTING CHAIN
CHAIN GUARD FRONT PLATE
TAKE-UP BLOCK
CHAIN GUARD BACK PLATE SPROCKETS
(BANDA MOTRIZ)
(POLEA ACANALADA DE
LA UNIDAD ESCLAVADA)
(POLEA ACANALADA DE
LA UNIDAD MOTRIZ)
(CUBIERTA INTERIOR DE LA GUARDA) (CATARINAS) (BLOQUE TENSOR)
(CUBIERTA FRONTAL DE LA GUARDA CADENA)
(CADENA IMPULSADORA)
(RODILLOS)
FIGURE 10A
Detail “A”
(Detalle “A”)
(Figura 10A)
TROUBLE SHOOTING DRIVES
TROUBLE CAUSE SOLUTION
Conveyor will not start or
motor quits frequently.
1) Motor is overloaded.
2) Motor is drawing too much current.
1) Check for overloading of conveyor.
2) Check heater or circuit breaker and change if necessary
Drive chain and sprock-
ets wear excessively.
1) Lack of lubrication on chain causing chain stretch
which creates improper chain to sprocket mesh.
2) Sprockets are out of alignment.
3) Loose chain.
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.
Loud popping or grind-
ing noise.
1) Defective bearing.
2) Loose set screws in bearing.
3) Loose drive chain.
1) Replace bearing.
2) Tighten set screw.
3) Tighten chain.
Motor or reducer over-
heating.
1) Conveyor is overloaded.
2) Accumulation pressure too great.
3) Low voltage to motor.
4) Low lubricant level in reducer.
5) One or more V-belts too tight.
1) Check capacity of conveyor and reduce load to recommended level.
2) Refer to “Pressure Adjustment” section. (Page 6)
3) Have electrician check and correct as necessary.
4) Relubricate per manufacturer’s recommendations. For HYTROL reduc-
er, refer to separate manual.
5) Re-position take-up sheaves further from double groove sheave.
TROUBLE SHOOTING DRIVE BELT TRACKING
TROUBLE CAUSE SOLUTION
Belt slips or won’t move,
but drive runs.
1) Conveyor is overloaded.
2) Belt is too loose.
3) Too much pressure against belt.
1) Check capability of conveyor and reduce load to recommended level.
2) Re-position take-up sheaves closer to double groove sheave.
3) Loosen spring tension on pressure rollers. (Page 7)
Belt moving, but tread
rollers not turning.
1) Not enough pressure against the belt from the
pressure rollers.
2) Bolt in suspension angle binding, not allowing
adjustment of pressure rollers.
3) Missing or broken springs or adjustment nuts.
1) Tighten spring tension on pressure rollers in area of stalled rollers.
(Page 7)
2) Loosen bolt and adjust spring tension as required. Check for burrs or
foreign material behind angles.
3) Replace and re-adjust.
• Trouble Shooting
10