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]
851-638 Rev. E
7400 Series CE End Drive
Conveyors
Installation, Maintenance and Parts Manual
Flat Belt Conveyor Cleated Belt Conveyor

Dorner Mfg. Corp. 2 851-638 Rev. E
7400 Series CE End Drive Conveyors
Table of Contents
Introduction ........................................................................ 2
Warnings – General Safety................................................. 3
Product Description............................................................ 4
Specifications ..................................................................... 5
Flat Belt 7400 Series Conveyor .................................. 5
Cleated Belt 7400 Series Conveyor ............................ 5
Flat Belt 7400 Series LPZ Conveyor .......................... 5
Cleated Belt 7400 Series LPZ Conveyor .................... 5
Conveyor Supports...................................................... 6
Specifications.................................................................. 6
Installation.......................................................................... 7
Required Tools................................................................ 7
Recommended Installation Sequence............................. 7
Conveyors Longer than 3048 mm .................................. 7
LPZ Conveyors............................................................... 8
Knuckles...................................................................... 8
Belt.............................................................................. 8
Guides.......................................................................... 9
All Conveyors................................................................. 9
Stand Installation......................................................... 9
Tail Assembly Installation ........................................ 10
Drive Tail............................................................... 10
Idler Tail ................................................................ 10
Tip Up Tail ............................................................ 11
Nose Bar Idler Tail ................................................ 12
Nose Bar Tip Up Tail ............................................ 12
Lifter Installation....................................................... 14
Wear Strip Installation .............................................. 14
Belt Installation ......................................................... 15
Belt Return Installation ............................................. 16
Preventive Maintenance and Adjustment......................... 17
Required Tools.............................................................. 17
Checklist ....................................................................... 17
Cleaning........................................................................ 17
Routine Cleaning....................................................... 17
Standard Conveyors............................................... 17
Conveyors with Tip Up Tails and Lifters.............. 17
Periodic Cleaning...................................................... 18
Lubrication.................................................................... 18
Conveyor Bearings.................................................... 18
Wearstrips and Belt Returns ......................................... 18
Maintaining the Conveyor Belt..................................... 18
Troubleshooting ........................................................ 18
Conveyor Belt Replacement ........................................ 19
Conveyors with Guides............................................. 19
Standard Belts............................................................ 19
Replacing a Section of Belt ................................... 19
Replacing the Entire Belt....................................... 20
Specialty Intralox 1100 Series Belts ......................... 20
Replacing a Section of Belt ................................... 20
Replacing the Entire Belt....................................... 21
Specialty Intralox 1600 Series Belts ......................... 21
Replacing a Section of Belt ................................... 21
Replacing the Entire Belt....................................... 21
Conveyor Belt Tensioning............................................ 22
Sprocket and Puck Removal......................................... 22
A - Drive Sprocket Removal..................................... 22
B - Idler Puck Removal............................................. 24
Reassembling Tail Assemblies ..................................... 25
Idler Tail and Tip Up Tail ......................................... 25
Drive Tail .................................................................. 25
Bearing Replacement.................................................... 27
LPZ Knuckles ............................................................... 27
Wearstrips and Belt Returns...................................... 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
Conveyor Frame and Extension.................................... 34
Upper Knuckle for 5° - 15°........................................... 35
Upper Knuckle for 30° - 60°......................................... 36
Lower Knuckle for 5° - 15° .......................................... 37
Lower Knuckle for 30° - 60° ........................................ 38
76 mm High Sides......................................................... 39
Cleated 25 mm Guides.................................................. 40
Cleated 76 mm Guides.................................................. 41
Flat Belt Returns ........................................................... 42
Cleated Belt Returns ..................................................... 42
Flat Belt......................................................................... 43
Cleated Belt................................................................... 43
Ordering a Replacement Chain..................................... 43
Belt Removal Tool........................................................ 43
Configuring Conveyor Part Number............................. 44
Notes................................................................................. 45
Return Policy.................................................................... 46
Introduction
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 AquaPruf conveyors are covered by Patent Numbers
7,207,435, 7,246,697, 7,383,944, additional patent pending
applications, and corresponding patents in other countries.
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.
CAUTION
CAUTION
Some illustrations may show guards
removed. DO NOT operate equipment without
guards.

851-638 Rev. E 3 Dorner Mfg. Corp.
7400 Series CE End Drive Conveyors
Warnings – General Safety
DANGER
SEVERE HAZARD!
KEEP OFF CONVEYORS. Climbing, sitting,
walking or riding on conveyor will result in
death or serious injury.
DANGER
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.
WARNING
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.
WARNING
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.
WARNING
SEVERE HAZARD!
LOCK OUT POWER before removing guards
or performing maintenance. Exposed moving
parts can cause serious injury.
WARNING
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.
WARNING
PUNCTURE HAZARD!
Handle drive shaft keyway with care. It may
be sharp and could puncture the skin,
causing serious injury.
WARNING
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.

Dorner Mfg. Corp. 4 851-638 Rev. E
7400 Series CE End Drive Conveyors
Product Description
Refer to (Figure 1) for typical conveyor components.
Figure 1
Typical Components
1Conveyor
2 Gearmotor
3 Belt (Flat Belt Shown)
4 Return
5 Support Stands
6 Motor Controller
7DriveEnd
8 Tension End
3
2
7
5
6
4
1
8

851-638 Rev. E 5 Dorner Mfg. Corp.
7400 Series CE End Drive Conveyors
Specifications
Specifications
Flat Belt 7400 Series Conveyor
Cleated Belt 7400 Series Conveyor
Flat Belt 7400 Series LPZ Conveyor
Cleated Belt 7400 Series LPZ Conveyor

Dorner Mfg. Corp. 6 851-638 Rev. E
7400 Series CE End Drive Conveyors
Specifications
Conveyor Supports
Figure 2
Specifications
Maximum Distances:
1 = 914 mm
2 = 2438 mm**
3 = 914 mm
** For conveyors longer than 3.05 m,
install support at frame joint.
1 2 3
Conveyor Width Reference (WW)06 – 60 in 02 increments
Conveyor Belt Width 6" (152 mm) – 60" (1524 mm) in 2" (51 mm) increments
Maximum Conveyor Load 97 kg / m2(20 lb / ft2) with a maximum of 4882 kg / m2 (1000 lb / ft2)
Belt Travel 305 mm (12") per revolution of pulley
Maximum Belt Speed 71 m / minute (233 ft / minute)
Belt Take-up 51 mm (2")
Conveyor Length Reference (LLL)036 – 999 in 001 increments
Conveyor Length 36" (914 mm) – 999" (25.4 m) in 1" (25 mm) increments
LPZ Section Lengths (LLL)024 – 252 in 001 increments
LPZ Section Length 24" (610 mm) – 252" (6401 mm) in 1" (25 mm) increments
Total LPZ Conveyor Length (L1 +L2 + L3) = Maximum 11.6 m (38') long conveyor
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

851-638 Rev. E 7 Dorner Mfg. Corp.
7400 Series CE End Drive Conveyors
Installation
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. Attach the stands to the conveyor. Refer to “Stand
Installation” on page 9.
2. Attach the tail assemblies to the frame. Refer to “Tail
Assembly Installation” on page 10.
3. Attach the lifters, if applicable. Refer to “Lifter
Installation” on page 14.
4. Install the gearmotor, if applicable. Refer to the “7400
Series Drive Package Installation, Maintenance and
Parts Manual.”
5. Attach the wear strips. Refer to “Wear Strip
Installation” on page 14.
6. Install the belt. Refer to “Belt Installation” on page 15.
7. Attach the belt returns. Refer to “Belt Return
Installation” on page 16.
8. Attach any guides / accessories. Refer to the "Service
Parts" section starting on page 28.
Conveyors Longer than 3048 mm
Typical Connection Components (Figure 4).
Figure 4
1. Locate the section number sequence etched on each
section of frame (Figure 5, item 1).
Figure 5
2. Position the frame sections in the correct order.
CAUTION
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
CAUTION
Conveyor MUST be mounted straight, flat,
and level within confines of conveyor. Use a
level (Figure 3, item 1), during setup.
1
1 M10 x 1.5 mm hex head cap screws (x4)
2 Connector hex rods (x2)
3 Conveyor frames
3
1
2
1
2
3
1

Dorner Mfg. Corp. 8 851-638 Rev. E
7400 Series CE End Drive Conveyors
Installation
3. Connect the frame sections by bolting the hex post
connectors (Figure 6, item 1) the sections of frame.
Figure 6
LPZ Conveyors
Knuckles
1. Attach upper knuckle (Figure 7, item 1) to frame
(Figure 7, item 2) with hex rods (Figure 7, item 3) and
bolts (Figure 7, item 4).
Figure 7
2. Install wear strips (Figure 7, item 5).
3. Attach lower knuckle (Figure 8, item 1) to frame
(Figure 8, item 2)with hex rods (Figure 8, item 3)and
bolts (Figure 8, item 4).
Figure 8
4. Install wear strips (Figure 8, item 5).
Belt
1. Slide belt (Figure 9, item 1) over knuckles on top of
the wear strips.
Figure 9
1
1
2
2
3
4
5
6
1
2
23
4
5
1

851-638 Rev. E 9 Dorner Mfg. Corp.
7400 Series CE End Drive Conveyors
Installation
Guides
1. Slide guides (Figure 10, item 1) on to the knuckle
frame, and secure with pull pins (Figure 10, item 2).
Figure 10
2. Install return guides and secure with pull pin
(Figure 10, item 3).
3. Slide guides (Figure 11, item 1) onto lower knuckle
frame, and secure with pull pins (Figure 11, item 2).
Figure 11
All Conveyors
Stand Installation
Typical Stand Components (Figure 12)
Figure 12
1. Position the stands on a flat, level surface.
2. Attach the stands to the frame (Figure 13).
Figure 13
1
2
3
1
2
1 Conveyor frame
2 Stand
3 M10 - 1.5 x 12 mm hex head cap screws (x4)
1
2
3
1
2
3

Dorner Mfg. Corp. 10 851-638 Rev. E
7400 Series CE End Drive Conveyors
Installation
Tail Assembly Installation
Drive Tail
Typical Drive Tail Components (Figure 14).
Figure 14
1. Slide the bearing shafts (Figure 15, item 1) into the
take up blocks (Figure 15, item 2).
Figure 15
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 16, item 1).
Figure 16
Idler Tail
Typical Idler Tail Components (Figure 17)
Figure 17
1 Drive tail assembly
2 Pull pin (x2)
3Conveyorframe
3
2
1
2
1
3
12
1 Idler tail assembly
2 Pull pin (x2)
3 Conveyor frame
1
3
2
1
2
1
3

851-638 Rev. E 11 Dorner Mfg. Corp.
7400 Series CE End Drive Conveyors
Installation
1. Slide the bearing shafts (Figure 18, item 1) into the
take up blocks (Figure 18, item 2).
Figure 18
Tip Up Tail
Typical Tip Up Tail Components (Figure 19)
Figure 19
1. Slide the tip up shaft (Figure 20, item 1) through the
designated slots in the frame.
Figure 20
2. Attach the key stops (Figure 21, item 1) to the tip up
shaft (Figure 21, item 2). The rounded end of the key
stop should be facing the tail.
Figure 21
3. Slide the bearing shafts (Figure 22, item 1) into the
holes in the tip up shaft (Figure 22, item 2).
Figure 22
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)
21
2
4
1
3
1
1
2
1
2

Dorner Mfg. Corp. 12 851-638 Rev. E
7400 Series CE End Drive Conveyors
Installation
Nose Bar Idler Tail
Typical Nose Bar Idler Tail Components (Figure 23)
Figure 23
1. Slide the nose bar idler shaft hands (Figure 24, item 1)
into the take up blocks (Figure 24, item 2).
Figure 24
2. Attach the nose bar transfer post (Figure 24, item 3) to
the nose bar idler shaft hands.
3. Ensure that the nose bar pucks (Figure 25, item 1) are
in line with the conveyor frame (Figure 25, item 2).
Figure 25
Nose Bar Tip Up Tail
Typical Nose Bar Tip Up Tail Components (Figure 26)
Figure 26
NOTE
Do not insert the pull pins on the tension end
of the conveyor until the belt has been
installed.
1 Nose bar idler tail assembly
2 Pull pin (x2)
3 Conveyor frame
1
2
3
1
2
3
2
1
3
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)
2
1
180˚
2
4
1
3

851-638 Rev. E 13 Dorner Mfg. Corp.
7400 Series CE End Drive Conveyors
Installation
1. Slide the tip up shaft (Figure 27, item 1) through the
designated slots in the frame.
Figure 27
2. Attach the key stops (Figure 28, item 1) to the tip up
shaft (Figure 28, item 2). The rounded end of the key
stop should face the tail.
Figure 28
3. Attach the nose bar idler shaft hands
(Figure 29, item 1) to the tip up shaft
(Figure 29, item 2).
Figure 29
4. Attach the nose bar transfer post (Figure 30, item 1) to
the nose bar idler shaft hands (Figure 30, item 2).
Figure 30
5. Ensure that the nose bar pucks (Figure 31, item 1) are
in line with the conveyor frame (Figure 31, item 2).
Figure 31
1
1
2
1
2
NOTE
Do not insert the pull pins on the tension end
of the conveyor until the belt has been
installed.
2
1
2
1
180˚

Dorner Mfg. Corp. 14 851-638 Rev. E
7400 Series CE End Drive Conveyors
Installation
Lifter Installation
Typical Lifter Components (Figure 32)
Figure 32
1. Slide the belt lift pivot bar (Figure 33, item 1) through
the designated holes in the frame.
Figure 33
2. Attach the lifter bars (Figure 33, item 2) to the belt lift
pivot bar (Figure 33, 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 33, item 3) to the belt
lift pivot rod.
Wear Strip Installation
Typical Wear Strip Components (Figure 34)
Figure 34
1. Position the wear strips (Figure 35, item 1) on the
frame.
Figure 35
2. Make sure the wear strips are situated securely in the
frame slots (Figure 35, item 2).
1 Belt lift pivot bar
2 Lifter bars
3 Belt lift handle
4 M8 - 1.25 x 16 mm hex head cap screw
1
2
3
4
3
2
1
1 Wear strip
1
1
1
2

851-638 Rev. E 15 Dorner Mfg. Corp.
7400 Series CE End Drive Conveyors
Installation
Belt Installation
Typical Belt Components (Figure 36)
Figure 36
1. Position the belt on the conveyor frame (Figure 37).
Figure 37
2. Wrap the belt around the conveyor, making sure the
sprocket teeth have engaged the belt.
3. Bring the ends of the belt together (Figure 38).
Figure 38
4. Insert the belt rod (Figure 39, item 1).
Figure 39
5. Push the belt rod in as far as possible.
6. Lightly tap the head of the rod with a hammer until it
snaps into position.
7. Extend the tension end to remove excess slack in the
belt (Figure 40).
Figure 40
8. Insert the pull pins (Figure 41, item 1) on the tension
end of the conveyor.
Figure 41
1 Chain belt
2Beltrod
1
2
1
2
1
1

Dorner Mfg. Corp. 16 851-638 Rev. E
7400 Series CE End Drive Conveyors
Installation
9. 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 19.
Belt Return Installation
Typical Belt Return Components (Figure 42)
Figure 42
1. Attach the chain return shoes (Figure 43, item 1) to the
return shaft (Figure 43, item 2).
Figure 43
2. Slide the return shaft (Figure 44, item 1) up and
through the large slot (Figure 44, item 2) in the frame
(picture shown without the belt or wear strips).
Figure 44
3. Push up on the return shaft (Figure 44, 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 45). Belt sag should not exceed 102 mm.
Follow steps 7 – 9 in the “Belt Installation” section on
page 15 to remove slack from the belt.
Figure 45
1 Return shaft
2 Chain return shoe
1
2
1
2
1
2
CAUTION
CAUTION
Belt sag should not exceed 102 mm from the
top of the returns.
1
2
Up to 102 mm

851-638 Rev. E 17 Dorner Mfg. Corp.
7400 Series CE End Drive Conveyors
Preventive Maintenance and Adjustment
Preventive M aintenance and Adju stment
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 46, item 1) that connect the guide
(Figure 46, item 2) to the frame.
Figure 46
2. Remove the pull pin (Figure 47, item 1) on the tension
end of the conveyor to release belt tension.
Figure 47
3. Lift up on the belt (Figure 48).
Figure 48
Conveyors with Tip Up Tails and Lifters
1. Remove the guides, if applicable, by removing the pull
pins (Figure 46, item 1) that connect the guide
(Figure 46, item 2) to the frame.
2. Use the lifter handle (Figure 49, item 1) to raise the
lifters (Figure 49, item 2) and raise the tip up tail
(Figure 49, item 3).
NOTE
Proper conveyor application, cleaning, and
sanitation are the responsibility of the end
user.
CAUTION
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.
WARNING
SEVERE HAZARD!
LOCK OUT POWER before removing guards
or performing maintenance. Exposed moving
parts can cause serious injury.
1
2
1

Dorner Mfg. Corp. 18 851-638 Rev. E
7400 Series CE End Drive Conveyors
Preventive Maintenance and Adjustment
Figure 49
Periodic Cleaning
Dorner recommends complete disassembly of the conveyor
periodically for thorough cleaning.
For conveyor disassembly and reassembly instructions:
• Refer to “Conveyor Belt Replacement” on page 19.
• Refer to “Sprocket and Puck Removal” on page 22.
• 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 50, item 1) on the exterior of the bearing shaft
assembly.
Figure 50
2. Replace the bearings if they become worn.
Wearstrips and Belt Returns
Replace the wearstrips and belt returns if they become worn.
For wearstrip and belt return installation instructions:
• Refer to “Wear Strip Installation” on page 14.
• Refer to “Belt Return Installation” 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
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.
3
2
1
NOTE
Visit www.dorner.com for complete list of
troubleshooting solutions.
1

851-638 Rev. E 19 Dorner Mfg. Corp.
7400 Series CE End Drive Conveyors
Preventive Maintenance and Adjustment
Conveyor Belt Replacement
Conveyors with Guides
1. Remove the pull pins (Figure 51, item 1) that connect
the guide (Figure 51, item 2) to the frame.
Figure 51
2. Remove the guide (Figure 52, item 1).
Figure 52
3. Follow the belt replacement procedures described in
“Standard Belts” on page 19, “Specialty Intralox 1100
Series Belts” on page 20, or “Specialty Intralox 1600
Series Belts” on page 21.
Standard Belts
Replacing a Section of Belt
1. Remove the pull pins (Figure 53, item 1) on the
tension end of the conveyor to release tension on the
belt.
Figure 53
2. Secure the retaining head side of the belt. Use the belt
removal tool (Figure 54, item 1) for 1" pitch belts. For
all other belts, position the section of belt so that it is
braced by the flanged puck (Figure 54, item 2).
Figure 54
WARNING
SEVERE HAZARD!
LOCK OUT POWER before removing guards
or performing maintenance. Exposed moving
parts can cause serious injury.
1
2
1
CAUTION
CAUTION
Secure the retaining head side of the belt
prior to removing a belt rod in order to
prevent damaging the belt.
1
21

Dorner Mfg. Corp. 20 851-638 Rev. E
7400 Series CE End Drive Conveyors
Preventive Maintenance and Adjustment
3. Use a punch and hammer to push the belt rod out by
striking the rod end opposite the retaining head
(Figure 55).
Figure 55
4. Remove the belt rods on both sides of the section of belt
being replaced.
5. Replace the old section with a new section of belt.
Replacing the Entire Belt
1. Remove the belt returns by pushing up on the return
shaft (Figure 56, item 1) and sliding it through the
large hole (Figure 56, item 2) in the frame.
Figure 56
2. Lower the opposite end of the return shaft
(Figure 56, item 1) and slide it out of the frame.
3. Follow steps 1 – 3 in "Standard Belts: Replacing a
Section of Belt" on page 19.
4. Remove the belt.
5. Replace the damaged or worn belt. Refer to “Belt
Installation” on page 15 and “Belt Return Installation”
on page 16.
Specialty Intralox 1100 Series Belts
Replacing a Section of Belt
1. Place the edge of a flat head screwdriver between the
the two belt links and turn clockwise (Figure 57).
Figure 57
2. Use a second belt rod of the same size to push on the
opposite end of the belt rod. (Figure 58).
Figure 58
3. Remove the belt rods on both sides of the section of belt
being replaced.
4. Replace the old section with a new section of belt.
CAUTION
CAUTION
DO NOT reuse belt rods that are damaged or
show signs of wear.
1
2
CAUTION
CAUTION
DO NOT reuse belt rods that are damaged or
show signs of wear.