Dorner AquaPruf 7400 Ultimate CE Series User manual

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DORNER MFG. CORP. INSIDE THE USA OUTSIDE THE USA
P.O. Box 20 • 975 Cottonwood Ave. TEL: [phone] TEL: [phone]
Hartland, WI 53029-0020 USA FAX: [phone] FAX: [phone]
7400 Series Curved End Drive
Conveyors
Installation, Maintenance and Parts Manual
851-595 Rev. A

851-595 Rev. A 2 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Table of Contents
Introduction.......................................................................... 2
Warnings – General Safety .................................................. 3
Product Description.............................................................. 4
Specifications ....................................................................... 4
Conveyor Supports ........................................................... 5
7400 Series Frame Section Numbers ............................... 5
Installation............................................................................ 6
Required Tools ................................................................. 6
Recommended Installation Sequence............................... 6
Conveyor Installation ....................................................... 6
Frame Section Connection............................................ 6
Stand Installation .......................................................... 7
Tail Assembly Installation ............................................ 8
Drive Tail .................................................................. 8
Idler Tail.................................................................... 8
Tip Up Tail ................................................................ 9
Nose Bar Idler Tail.................................................. 10
Nose Bar Tip Up Tail .............................................. 11
Lifter Installation ........................................................ 12
Wear Strip Installation ................................................ 12
Straight Frame Sections .......................................... 12
Curved Frame Sections ........................................... 13
Belt Return Installation – Curved Frame Sections ..... 14
Belt Installation........................................................... 15
Belt Return Installation – Straight Frame Sections .... 16
Preventive Maintenance and Adjustment .......................... 18
Required Tools ............................................................... 18
Checklist ........................................................................ 18
Cleaning.......................................................................... 18
Routine Cleaning ........................................................ 18
Standard Conveyors ................................................ 18
Conveyors with Tip Up Tails and Lifters................ 18
Periodic Cleaning........................................................ 19
Lubrication ..................................................................... 19
Conveyor Bearings .................................................... 19
Wear Strips and Belt Returns ......................................... 19
Maintaining the Conveyor Belt...................................... 19
Troubleshooting.......................................................... 19
Conveyor Belt Replacement .......................................... 20
Conveyors with Guides .............................................. 20
Standard Belts............................................................. 20
Replacing a Section of Belt .................................... 20
Replacing the Entire Belt........................................ 21
Specialty Intralox 2400 Series Belts .......................... 21
Replacing a Section of Belt .................................... 21
Replacing the Entire Belt........................................ 22
Conveyor Belt Tensioning ............................................. 22
Sprocket and Puck Removal .......................................... 23
A - Drive Sprocket Removal ..................................... 23
B - Idler Puck Removal ............................................. 24
Reassembling Tail Assemblies ...................................... 25
Idler Tail and Tip Up Tail .......................................... 25
Drive Tail ................................................................... 25
Bearing Replacement .................................................... 27
Service Parts ...................................................................... 28
Drive End Components.................................................. 28
Tension End Components .............................................. 30
Tip Up Tension End....................................................... 31
Nose Bar Tension End ................................................... 32
Nose Bar Tip Up Tension End....................................... 33
Curve Conveyor Frame and Wear Strips ....................... 34
Straight Coveyor Frame and Wear Strips ....................... 36
Conveyor Frame Connection ......................................... 37
3" (76 mm) High Sides .................................................. 38
Straight Belt Return ....................................................... 39
Curve Belt Return .......................................................... 39
Curve Belt ...................................................................... 40
Ordering a Replacement Chain...................................... 40
Belt Removal Tool......................................................... 40
Configuring Conveyor Part Number.............................. 41
Return Policy ..................................................................... 42
Upon receipt of shipment:
• Compare shipment with packing slip. Contact factory
regarding discrepancies.
• Inspect packages for shipping damage. Contact carrier
regarding damage.Accessories may be shipped loose.
• See accessory instructions for installation.
The Dorner Limited Warranty applies.
Dorner 7400 Series conveyors have patents pending.
Dorner reserves the right to make changes at any time
without notice or obligation.
Dorner has convenient, pre-configured kits of Key Service
Parts for all conveyor products. These time saving kits are
easy to order, designed for fast installation, and guarantee
you will have what you need when you need it. Key Parts
and Kits are marked in the Service Parts section of this
manual with the Performance Parts Kits logo .
Intralox is a registered trademark of Laitram L.L.C. in the
United States and / or other countries.
Introduction
CAUTION
Some illustrations may show guards
removed. DO NOT operate equipment without
guards.

851-595 Rev. A 3 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Warnings – General Safety
ADANGER
SEVERE HAZARD!
KEEP OFF CONVEYORS. Climbing, sitting,
walking or riding on conveyor will result in
death or serious injury.
ADANGER
EXPLOSION HAZARD!
• DO NOT OPERATE CONVEYORS IN AN
EXPLOSIVE ENVIRONMENT. The electric
gearmotor generates heat and could ignite
combustible vapors.
• Failure to comply will result in death or
serious injury.
AWARNING
CRUSH HAZARD!
• DO NOT place hands or fingers inside the
conveyor while it is running.
• DO NOT wear loose garments while
operating the conveyor. Loose garments
can become caught up in the conveyor.
• Failure to comply could result in serious
injury.
AWARNING
CRUSH HAZARD!
• SUPPORT CONVEYOR SECTIONS PRIOR
TO LOOSENING STAND HEIGHT OR
ANGLE ADJUSTMENT SCREWS.
• Loosening stand height or angle
adjustment screws may cause conveyor
sections to drop down, causing serious
injury.
AWARNING
SEVERE HAZARD!
LOCK OUT POWER before removing guards
or performing maintenance. Exposed moving
parts can cause serious injury.
AWARNING
BURN HAZARD!
DO NOT TOUCH the motor while operating, or
shortly after being turned off. Motors may be
HOT and can cause serious burn injuries.
AWARNING
PUNCTURE HAZARD!
Handle drive shaft keyway with care. It may
be sharp and could puncture the skin,
causing serious injury.
AWARNING
SEVERE HAZARD!
• Dorner cannot control the physical
installation and application of conveyors.
Taking protective measures is the
responsibility of the user.
• When conveyors are used in conjunction
with other equipment or as part of a
multiple conveyor system, CHECK FOR
POTENTIAL PINCH POINTS and other
mechanical hazards before system start-
up.
• Failure to comply could result in serious
injury.

851-595 Rev. A 4 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Product Description
Refer to (Figure 1) for typical conveyor components.
Figure 1
Specifications
Typical Components
1Conveyor
2 Gearmotor
3Belt
4 Return
5 Support Stands
6 Motor Controller
7DriveEnd
8 Tension End
2
1
4
3
8
7
6
5
Specifications
Conveyor Width Reference (WW)08 – 36 in 02 increments
Conveyor Belt Width 8" (203 mm) – 36" (914 mm) in 2" (51 mm) increments
Maximum Conveyor Load 20 lb / ft2(97 kg / m2) with a maximum of 1000 lb / ft2(4882 kg / m2)
Belt Travel 12" (305 mm) per revolution of pulley
Maximum Belt Speed 150 ft / minute (45 m / minute)
Belt Take-up 2" (51 mm)
Conveyor Length Reference (LLL)020 – 999 in 001 increments
Conveyor Length 20" (508 mm) – 999" (25.4 mm) in 1" (25 mm) increments
IMPORTANT
Maximum conveyor loads are based on:
• Non-accumulating product
• Product moving toward gearmotor
• Conveyor being mounted horizontally
• Conveyor being located in a dry environment
• Conveyor equipped with standard belt only

851-595 Rev. A 5 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Specifications
Conveyor Supports
Figure 2
7400 Series Frame Section Numbers
Straight Infeed Module / ldler Module
Straight Intermediate Module
Curve Module
Straight Exit / Drive Module
* Refer to “Ordering and Specifications” Catalog for details.
Maximum Distances:
1 (Infeed) = 3ft (914 mm)
2 (Outfeed) = 3ft (914 mm)
** Stand positions will be determined by the factory.
1 2
#BB
Module Serialized
Sequence: 1 thru 9
Belt Material
Guide Profile
74 3 WW LLL P C S G
Cleaning Options
Stand Location
Pulley Type
Length
Belt Width
74 5 WW CS #BB
Module Serialized
Sequence: 1 thru 9
Belt Material
Cleaning Options
Stand Holes
Length
Belt Width
LLL
Guide Profile
G
74 4 WW SC#BB
Module Serialized
Sequence: 1 thru 9
Belt Material
Cleaning Options
Stand Holes
Degree of Turn
Belt Width
DDD
Guide Profile
G
74 M WW DC #BB
Module Serialized
Drive Shaft Position
AD
Sequence: 1 thru 9
Belt Material
Stand Location
S
Cleaning Options
Drive/ Pulley Type
Length
Belt Width
LLL
Guide Profile
G

Dorner Mfg. Corp. 6 851-595 Rev. A
7400 Series Curved End Drive Conveyors
Installation
Figure 3
Required Tools
• 17 mm wrench (for hexagonal head fasteners)
• 4 mm hex wrench (for bearing shaft assembly fasteners)
• Level
• Torque wrench
Recommended Installation
Sequence
1. Connect the frame sections together. “Frame Section
Connection” on page 6.
2. Attach the stands to the conveyor. Refer to “Stand
Installation” on page 7.
3. Attach the tail assemblies to the frame. Refer to “Tail
Assembly Installation” on page 8.
4. Attach the lifters, if applicable. Refer to “Lifter
Installation” on page 12.
5. Install the gearmotor, if applicable. Refer to the “7400
Series Drive Package Installation, Maintenance and
Parts Manual.”
6. Attach the wear strips. Refer to “Wear Strip Installation”
on page 12.
7. Install the belt. Refer to “Belt Installation” on page 15.
8. Attach the belt returns. Refer to “Belt Return
Installation – Straight Frame Sections” on page 16.
9. Attach any guides / accessories. Refer to the "Service
Parts" section starting on page 28.
Conveyor Installation
Frame Section Connection
Typical Connection Components (Figure 4)
Figure 4
Figure 5
1. Locate the section number sequence etched on each
section of frame (Figure 6, item 1).
Figure 6
2. Position the frame sections in the correct order
(Figure 7).
CAUTION
Dorner recommends cleaning all the “food
zones” prior to placing conveyor into service.
Ensure adequate access is provided for
cleaning and servicing equipment so that the
required level of hygiene can be maintained.
CAUTION
Conveyor MUST be mounted straight, flat,
and level within confines of conveyor. Use a
level (Figure 3, item 1), during setup.
1
1 Conveyor frame section
2 Curved conveyor frame section
3 Hex post connector (x2)
4 Flat connector (x2)*
5 M10 - 1.5 x 12 mm hex head cap screw (x4)*
6 M10 - 1.5 x 16 mm hex head cap screw (x4)
* For connections not supported by stands.
6
1
3
4
5
2
1

851-595 Rev. A 7 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Installation
Figure 7
3. Connect the frame sections by bolting the hex post
connectors (Figure 8, item 1) to the cross member
supports of each frame section.
Figure 8
4. Attach the flat connectors (Figure 9, item 1), if
applicable, to the inside of the frame sections.
Figure 9
Stand Installation
Typical Stand Components (Figure 10)
Figure 10
1. Position the stands on a flat, level surface.
2. Attach the stands to the frame (Figure 11).
Figure 11
Infeed / Idler
Module (1)
Exit / Drive
Module (5)
Intermediate
Module (3)
Curve
Module (4)
Curve
Module (2)
1
1
1 Conveyor frame
2 Stand
3 M10 - 1.5 x 12 mm hex head cap screws (x4)
1
2
3

Dorner Mfg. Corp. 8 851-595 Rev. A
7400 Series Curved End Drive Conveyors
Installation
Tail Assembly Installation
Drive Tail
Typical Drive Tail Components (Figure 12)
Figure 12
1. Slide the bearing shafts (Figure 13, item 1) into the take
up blocks (Figure 13, item 2).
Figure 13
2. Install the drive package, if applicable. Refer to the
“7400 Series Drive Package Installation, Maintenance
and Parts Manual.”
3. Insert the pull pins (Figure 14, item 1).
Figure 14
Idler Tail
Typical Idler Tail Conponents (Figure 15)
Figure 15
1. Slide the bearing shafts (Figure 16, item 1) into the take
up blocks (Figure 16, item 2).
1 Drive tail assembly
2 Pull pin (x2)
3 Conveyor frame
3
2
1
12
1 Idler tail assembly
2 Pull pin (x2)
3 Conveyor frame
1
3
2
1

851-595 Rev. A 9 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Installation
Figure 16
Tip Up Tail
Typical Tip Up Tail Components (Figure 17)
Figure 17
1. Slide the tip up shaft (Figure 18, item 1) through the
designated slots in the frame.
Figure 18
2. Attach the key stops (Figure 19, item 1) to the tip up
shaft (Figure 19, item 2). The rounded end of the key
stop should be facing the tail.
Figure 19
3. Slide the bearing shafts (Figure 20, item 1) into the
holes in the tip up shaft (Figure 20, item 2).
Figure 20
NOTE
Do not insert the pull pins on the tension end
of the conveyor until the belt has been
installed.
1 Tip up tail assembly
2 Pull pin (x2)
3 Tip up shaft
4 Key stops (x2)
5 M10 - 1.5 mm acorn nut (x2)
21
3
2
4
1
5
1
1
2
1
2

Dorner Mfg. Corp. 10 851-595 Rev. A
7400 Series Curved End Drive Conveyors
Installation
Nose Bar Idler Tail
Typical Nose Bar Idler Tail Components (Figure 21)
Figure 21
1. Slide the nose bar idler shaft hands (Figure 22, item 1)
into the take up blocks (Figure 22, item 2).
2. Attach the nose bar transfer post (Figure 22, item 3) to
the nose bar idler shaft hands.
Figure 22
3. Ensure that the nose bar pucks (Figure 23, item 1) are
in line with the conveyor frame (Figure 23, item 2).
Figure 23
NOTE
Do not insert the pull pins on the tension end
of the conveyor until the belt has been
installed.
NOTE
Adjust the acorn nuts (Figure 17, item 5) on
the key stops (Figure 17, item 4) to raise or
lower the tip up tail assembly.
1 Nose bar idler tail assembly
2 Pull pin (x2)
3 Conveyor frame
1
2
3
NOTE
Do not insert the pull pins on the tension end
of the conveyor until the belt has been
installed.
2
1
3
2
1
180˚

851-595 Rev. A 11 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Installation
Nose Bar Tip Up Tail
Typical Nose Bar Tip Up Tail Components (Figure 24)
Figure 24
1. Slide the tip up shaft (Figure 25, item 1) through the
designated slots in the frame.
Figure 25
2. Attach the key stops (Figure 26, item 1) to the tip up
shaft (Figure 26, item 2). The rounded end of the key
stop should face the tail.
Figure 26
3. Attach the nose bar idler shaft hands
(Figure 27, item 1) to the tip up shaft
(Figure 27, item 2).
Figure 27
4. Attach the nose bar transfer post (Figure 28, item 1) to
the nose bar idler shaft hands (Figure 28, item 2).
Figure 28
1 Tip up tail assembly
2 Pull pin (x2)
3 Tip up shaft
4 Key stops (x2)
5 M10 - 1.5 mm acorn nut (x2)
3
2
4
5
1
1
1
2
1
2
2
1

Dorner Mfg. Corp. 12 851-595 Rev. A
7400 Series Curved End Drive Conveyors
Installation
5. Ensure that the nose bar pucks (Figure 29, item 1) are
in line with the conveyor frame (Figure 29, item 2).
Figure 29
Lifter Installation
Typical Lifter Components (Figure 30)
Figure 30
1. Slide the belt lift pivot bar (Figure 31, item 1) through
the designated holes in the frame.
Figure 31
2. Attach the lifter bars (Figure 31, item 2) to the belt lift
pivot bar (Figure 31, item 1). Make sure the hooked
ends of the lifter bars are facing down when resting
against the frame.
3. Attach the lifter handle (Figure 31, item 3) to the belt
lift pivot rod.
Wear Strip Installation
Straight Frame Sections
Typical Wear Strip Components (Figure 32)
Figure 32
1. Position the wear strips (Figure 33, item 1) on the
frame.
NOTE
Do not insert the pull pins on the tension end
of the conveyor until the belt has been
installed.
NOTE
Adjust the acorn nuts (Figure 24, item 5) on
the key stops (Figure 24, item 4) to raise or
lower the tip up tail assembly.
1 Belt lift pivot bar
2 Lifter bars
3 Belt lift handle
4 M8 - 1.25 x 16 mm hex head cap screw
2
1
180˚
3
4
1
2
1 Wear strip
3
2
1
1

851-595 Rev. A 13 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Installation
Figure 33
2. Make sure the wear strips are situated securely in the
frame slots (Figure 33, item 2).
Curved Frame Sections
Typical Curved Wear Strip Components (Figure 34)
Figure 34
1. Insert the inside curve top wear strip
(Figure 35, item 1) into the innermost slot
(Figure 35, item 2) on the inside of the frame.
Figure 35
2. Attach the hold down wear strip (Figure 36, item 1) to
the frame hooks (Figure 36, item 2) on the outside of
the frame.
Figure 36
3. Insert the wear strips (Figure 37, item 1) into the
appropriate slots in the frame (Figure 37, item 2),
starting with the shortest wear strip on the inside of the
curved section and working outward to the longest.
1 Hold down wear strip
2 Wear strip
3 Inside curve top wear strip
1
2
1
2
3
1
2
1
2

Dorner Mfg. Corp. 14 851-595 Rev. A
7400 Series Curved End Drive Conveyors
Installation
Figure 37
Belt Return Installation – Curved Frame
Sections
Typical Curved Belt Return Components (Figure 38)
Figure 38
1. Insert the inside return bottom wear strip
(Figure 39, item 1) into the slots (Figure 39, item 2) on
the lower inside section of the frame (figure shown
without the belt or wear strips).
Figure 39
2. Attach the chain return shoes (Figure 39, item 1) to the
curve return shafts (Figure 39, item 2).
3. Slide the long end of the curve return shaft
(Figure 40, item 1) through the center hole in the return
bottom wear strip (Figure 40, item 2).
Figure 40
4. Slide the return shaft up and through the large slot in the
frame. Make sure the holes in the return bottom wear
strip match up with the holes in the conveyor frame.
5. Push up on the return shaft and slide the notched end of
the shaft through the small slot on the opposite side of
the frame (Figure 40, item 3).
6. Repeat steps 4 – 5 with the remaining returns.
1 Return bottom wear strip
2 Curve return shaft
3 Chain return shoe
4 Inside return bottom wear strip
1
2
4
3
2
1
1
2
1
3
2

851-595 Rev. A 15 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Installation
Belt Installation
Typical Belt Components (Figure 41)
Figure 41
1. Position the belt on the conveyor frame (Figure 42).
Figure 42
Figure 43
2. Evenly space the sprockets (Figure 44, item 1) along
the drive spindle (Figure 44, item 2).
Figure 44
3. Wrap the belt around the conveyor, making sure the
sprocket teeth (Figure 44, item 1) have engaged the
belt.
4. Feed the ends of the belt through the top and bottom of
the curved frame sections.
5. Bring the ends of the belt together (Figure 45).
Figure 45
6. Insert the belt rod (Figure 46, item 1).
1 Chain belt
2Beltrod
NOTE
Ensure the belt is running in the correct
direction (Figure 43).
1
2
1
2

Dorner Mfg. Corp. 16 851-595 Rev. A
7400 Series Curved End Drive Conveyors
Installation
Figure 46
7. Push the belt rod in as far as possible.
8. Lightly tap the head of the rod with a hammer until it
snaps into position.
9. Extend the tension end to remove excess slack in the
belt (Figure 47).
Figure 47
10. Insert the pull pins (Figure 48, item 1) on the tension
end of the conveyor.
Figure 48
11. If no more travel is available, remove one or more belt
links to take up the tension. Refer to “Standard Belts:
Replacing a Section of Belt” on page 20.
Belt Return Installation – Straight Frame
Sections
Typical Belt Return Components (Figure 49)
Figure 49
1. Attach the chain return shoes (Figure 50, item 1) to the
return shaft (Figure 50, item 2).
Figure 50
2. Slide the return shaft up (Figure 51, item 1) and
through the large slot (Figure 51, item 2) in the frame
(picture shown without the belt or wear strips).
1
1
1 Return shaft
2 Chain return shoe
1
2
1
2

851-595 Rev. A 17 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Installation
Figure 51
3. Push up on the return shaft (Figure 51, item 1) and slide
the notched end of the shaft through the small slot on the
opposite side of the frame.
4. Check belt sag by measuring from the top of the return
(Figure 52). Belt sag should not exceed 4" (102 mm).
Follow steps 7 – 9 in the “Belt Installation” section on
page 15 to remove slack from the belt.
Figure 52
CAUTION
Belt sag should not exceed 4" (102 mm) from
the top of the returns.
1
2
(102 mm)
Up to 4"

Dorner Mfg. Corp. 18 851-595 Rev. A
7400 Series Curved End Drive Conveyors
Preventive Maintenance and Adjustment
Required Tools
• 17 mm wrench (or adjustable wrench)
• 4 mm hex wrench (for bearing shaft assembly fasteners)
• 3 mm hex wrench
• Punch and hammer (to remove belt rod)
Checklist
• Keep service parts on hand. Refer to the "Service Parts"
section starting on page 28 for recommendations.
• Replace any worn or damaged parts.
Cleaning
Routine Cleaning
Dorner recommends cleaning the inside and the outside of
the conveyor on a daily basis. Refer to the following steps to
access the inside of the conveyor.
Standard Conveyors
1. Remove the guides, if applicable, by removing the pull
pins (Figure 58, item 1) that connect the guide
(Figure 58, item 2) to the frame.
Figure 53
2. Remove the pull pin (Figure 54, item 1) on the tension
end of the conveyor to release belt tension.
Figure 54
3. Lift up on the belt (Figure 55).
Figure 55
Conveyors with Tip Up Tails and Lifters
1. Remove the guides, if applicable, by removing the pull
pins (Figure 58, item 1) that connect the guide
(Figure 58, item 2) to the frame.
2. Use the lifter handle (Figure 56, item 1) to raise the
lifters (Figure 56, item 2) and raise the tip up tail
(Figure 56, item 3).
Figure 56
AWARNING
SEVERE HAZARD!
LOCK OUT POWER before removing guards
or performing maintenance. Exposed moving
parts can cause serious injury.
1
2
1
3
2
1

851-595 Rev. A 19 Dorner Mfg. Corp.
7400 Series Curved End Drive Conveyors
Preventive Maintenance and Adjustment
Periodic Cleaning
Dorner recommends complete dissasembly of the conveyor
periodically for thorough cleaning.
For conveyor disassembly and reassembly instructions:
• Refer to “Conveyor Belt Replacement” on page 20.
• Refer to “Sprocket and Puck Removal” on page 23.
• Refer to “Reassembling Tail Assemblies” on page 25.
Lubrication
Conveyor Bearings
Conveyor bearing lubrication is required. Dorner
recommends using an H-1 food grade grease.
1. Add grease to the bearing using the zerk fitting
(Figure 57, item 1) on the exterior of the bearing shaft
assembly.
Figure 57
2. Replace the bearings if they become worn.
Wear Strips and Belt Returns
Replace the wear strips and belt returns if they become worn.
For wearstrip and belt return installation instructions:
• Refer to “Wear Strip Installation” on page 12.
• Refer to “Belt Return Installation – Straight Frame Sec-
tions” on page 16.
Maintaining the Conveyor Belt
Troubleshooting
Inspect conveyor belt for:
• Surface cuts or wear
• Skipping
Damage to belt links or rods, surface cuts and / or
wear indicate:
• Sharp or heavy parts impacting belt
• Jammed parts
• Accumulated dirt
• Foreign material inside the conveyor
• Improperly positioned accessories
Skipping indicates:
• Excessive load on belt
• Worn sprockets or impacted dirt on drive pulley
Damage to belt links or rods indicate:
• Excessive load on belt
• Dirt impacted on sprockets
• Excessive or improper side loading
• Improperly positioned accessories
CAUTION
DO NOT submerge or soak bearing
assemblies. This will reduce the life of the
bearing.
NOTE
Although bearings are sealed, re-greasing is
recommended to increase bearing life. An
H-1 food grade grease is recommended. The
frequency of bearing re-greasing is
dependent upon the application in which the
conveyor is being used. Frequency of re-
greasing will increase with the frequency of
conveyor washing.
1
NOTE
Visit www.dorner.com for complete list of
troubleshooting solutions.

Dorner Mfg. Corp. 20 851-595 Rev. A
7400 Series Curved End Drive Conveyors
Preventive Maintenance and Adjustment
Conveyor Belt Replacement
Conveyors with Guides
1. Remove the pull pins (Figure 58, item 1) that connect
the guide (Figure 58, item 2) to the frame.
Figure 58
2. Remove the guide (Figure 59, item 1).
Figure 59
3. Follow the belt replacement procedures described in
“Standard Belts” on page 20 or “Specailty Intralox 2400
Series Belts”on page 21.
Standard Belts
Replacing a Section of Belt
1. Remove the pull pins (Figure 60, item 1) on the tension
end of the conveyor to release tension on the belt.
Figure 60
2. Secure the retaining head side of the belt using the belt
removal tool (Figure 61, item 1).
Figure 61
3. Use a punch and hammer to push the belt rod out by
striking the rod end opposite the retaining head
(Figure 62).
AWARNING
SEVERE HAZARD!
LOCK OUT POWER before removing guards
or performing maintenance. Exposed moving
parts can cause serious injury.
1
2
1
CAUTION
Secure the retaining head side of the belt
prior to removing a belt rod in order to
prevent damaging the belt.
1
1