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]
851-639 Rev. E
7400 Series CE Nose Bar
Conveyors
Installation, Maintenance and Parts Manual

Dorner Mfg. Corp. 2 851-639 Rev. E
7400 Series CE Nose Bar Conveyors
Table of Contents
Table of Contents
Introduction ........................................................................ 2
Warnings – General Safety................................................. 3
Product Description............................................................ 4
Specifications ..................................................................... 4
Flat Belt 7400 Series Conveyor .................................. 4
Flat Belt 7400 Series LPZ Conveyor .......................... 4
Conveyor Supports...................................................... 5
Specifications.............................................................. 5
Installation.......................................................................... 6
Required Tools................................................................ 6
Recommended Installation Sequence............................. 6
Conveyors Longer than 3048 mm .................................. 6
LPZ Conveyors............................................................... 7
Knuckles...................................................................... 7
Belt.............................................................................. 7
Guides.......................................................................... 8
All Conveyors................................................................. 8
Stand Installation......................................................... 8
Tail Assembly Installation .......................................... 9
Nose Bar Drive Tail................................................. 9
Nose Bar Idler Tail .................................................. 9
Nose Bar Tip Up Tail ............................................ 10
Idler Tail ................................................................ 11
Tip Up Tail ............................................................ 12
Lifter Installation....................................................... 13
Wear Strip Installation .............................................. 13
Belt Installation ......................................................... 14
Belt Return Installation ............................................. 15
Preventive Maintenance and Adjustment......................... 16
Required Tools.............................................................. 16
Checklist ....................................................................... 16
Cleaning........................................................................ 16
Routine Cleaning....................................................... 16
Standard Conveyors............................................... 16
Conveyors with Tip Up Tails and Lifters.............. 17
Periodic Cleaning...................................................... 17
Lubrication.................................................................... 17
Conveyor Bearings.................................................... 17
Wearstrips and Belt Returns ......................................... 17
Maintaining the Conveyor Belt..................................... 17
Troubleshooting ........................................................ 17
Conveyor Belt Replacement ........................................ 18
Conveyors with Guides ............................................. 18
Standard Belts............................................................ 18
Replacing a Section of Belt ................................... 18
Replacing the Entire Belt....................................... 19
Specialty Intralox 1100 Series Belts ......................... 19
Replacing a Section of Belt ................................... 19
Replacing the Entire Belt....................................... 20
Conveyor Belt Tensioning............................................ 20
Sprocket and Puck Removal......................................... 20
A - Drive Sprocket Removal..................................... 21
B - Nose Bar Puck Removal...................................... 22
C - Idler Puck Removal............................................. 23
Reassembling Tail Assemblies ..................................... 24
Nose Bar Drive Tail .................................................. 24
Nose Bar Assembly ............................................... 24
Drive Tail Assembly.............................................. 24
Nose Bar Idler and Tip Up Tail................................. 24
Idler Tail and Tip Up Tail ......................................... 25
Bearing Replacement.................................................... 26
LPZ Knuckles ............................................................... 26
Wearstrips and Belt Returns...................................... 26
Notes................................................................................. 27
Service Parts..................................................................... 28
Nose Bar Drive End Components................................. 28
Nose Bar Tension End .................................................. 30
Nose Bar Tip Up Tension End...................................... 31
Tension End Components............................................. 32
Tip Up Tension End...................................................... 33
Upper Knuckle for 5° - 15°........................................... 34
Upper Knuckle for 30°.................................................. 35
Lower Knuckle for 5° - 15° .......................................... 36
Lower Knuckle for 30° ................................................. 37
Conveyor Frame and Extension.................................... 38
76 mm High Sides......................................................... 39
Flat Belt Returns ........................................................... 40
Flat Belt Chain Repair Kit ............................................ 40
Belt Removal Tool........................................................ 40
Ordering a Replacement Chain..................................... 41
Configuring a 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 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.
Introduction
CAUTION
CAUTION
Some illustrations may show guards
removed. DO NOT operate equipment without
guards.

851-639 Rev. E 3 Dorner Mfg. Corp.
7400 Series CE Nose Bar 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. 4 851-639 Rev. E
7400 Series CE Nose Bar Conveyors
Product Description
Refer to (Figure 1) for typical conveyor components.
Figure 1
Flat Belt 7400 Series Conveyor Flat Belt 7400 Series LPZ Conveyor
Typical Components
1Conveyor
2 Gearmotor
3Belt
4 Return
5 Support Stands
6 Motor Controller
7DriveEnd
8 Tension End
3
2
7
5
6
4
1
8
Specifications

851-639 Rev. E 5 Dorner Mfg. Corp.
7400 Series CE Nose Bar 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

Dorner Mfg. Corp. 6 851-639 Rev. E
7400 Series CE Nose Bar 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 8.
2. Attach the tail assemblies to the frame. Refer to “Tail
Assembly Installation” on page 9.
3. Attach the lifters, if applicable. Refer to “Lifter
Installation” on page 13.
4. Install the gearmotor, if applicable. Refer to the “7400
Series Drive Package Installation, Maintenance and
Parts Manual.”
5. Attach the wearstrips. Refer to “Wear Strip Installation”
on page 13.
6. Install the belt. Refer to “Belt Installation” on page 14.
7. Attach the belt returns. Refer to “Belt Return
Installation” on page 15.
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

851-639 Rev. E 7 Dorner Mfg. Corp.
7400 Series CE Nose Bar 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
• 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

Dorner Mfg. Corp. 8 851-639 Rev. E
7400 Series CE Nose Bar 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

851-639 Rev. E 9 Dorner Mfg. Corp.
7400 Series CE Nose Bar Conveyors
Installation
Tail Assembly Installation
Nose Bar Drive Tail
Typical Nose Bar Drive Tail Components (Figure 14)
Figure 14
1. Bolt the nose bar drive tail assembly to the conveyor
frame (Figure 15).
Figure 15
2. Install the drive package, if applicable. Refer to the
“7400 Series Drive Package Installation, Maintenance
and Parts Manual.”
Nose Bar Idler Tail
Typical Nose Bar Idler Tail Components (Figure 16)
Figure 16
1. Slide the nose bar idler shaft hands (Figure 17, item 1)
into the take up blocks (Figure 17, item 2).
2. Attach the nose bar transfer post (Figure 17, item 3) to
the nose bar idler shaft hands.
Figure 17
1 Nose bar drive tail assembly
2 M10 x 1.5 x 12mm hex head cap screws (x4)
3 Conveyor frame
3
2
1
1
2
3
1 Nose bar idler tail assembly
2 Pull pin (x2)
3 Conveyor frame
1
2
3
1
2
3
2
1
3

Dorner Mfg. Corp. 10 851-639 Rev. E
7400 Series CE Nose Bar Conveyors
Installation
3. Ensure that the nose bar pucks (Figure 18, item 1) are
in line with the conveyor frame (Figure 18, item 2).
Figure 18
Nose Bar Tip Up Tail
Typical Nose Bar 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 face the tail.
Figure 21
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˚
3
2
4
1
1
1
2

851-639 Rev. E 11 Dorner Mfg. Corp.
7400 Series CE Nose Bar Conveyors
Installation
3. Attach the nose bar idler shaft hands
(Figure 22, item 1) to the tip up shaft
(Figure 22, item 2).
Figure 22
4. Attach the nose bar transfer post (Figure 23, item 1) to
the nose bar idler shaft hands (Figure 23, item 2).
Figure 23
5. Ensure that the nose bar pucks (Figure 24, item 1) are
in line with the conveyor frame (Figure 24, item 2).
Figure 24
Idler Tail
Typical Idler Tail Components (Figure 25)
Figure 25
1
2
2
1
2
1
180˚
NOTE
Do not insert the pull pins on the tension end
of the conveyor until the belt has been
installed.
1 Idler tail assembly
2 Pull pin (x2)
3 Conveyor frame
3
2
1
2
3
1

Dorner Mfg. Corp. 12 851-639 Rev. E
7400 Series CE Nose Bar Conveyors
Installation
1. Slide the bearing shafts (Figure 26, item 1) into the
take up blocks (Figure 26, item 2).
Figure 26
Tip Up Tail
Typical Tip Up Tail Components (Figure 27)
Figure 27
1. Slide the tip up shaft (Figure 28, item 1) through the
designated slots in the frame.
Figure 28
2. Attach the key stops (Figure 29, item 1) to the tip up
shaft (Figure 29, item 2). The rounded end of the key
stop should be facing the tail.
Figure 29
3. Slide the bearing shafts (Figure 30, item 1) into the
holes in the tip up shaft (Figure 30, item 2).
Figure 30
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

851-639 Rev. E 13 Dorner Mfg. Corp.
7400 Series CE Nose Bar Conveyors
Installation
Lifter Installation
Typical Lifter Components (Figure 31)
Figure 31
1. Slide the belt lift pivot bar (Figure 32, item 1) through
the designated holes in the frame.
Figure 32
2. Attach the lifter bars (Figure 32, item 2) to the belt lift
pivot bar (Figure 32, 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 32, item 3) to the belt
lift pivot rod.
Wear Strip Installation
Typical Wear Strip Components (Figure 33)
Figure 33
1. Position the wear strips (Figure 34, item 1) on the
frame.
Figure 34
2. Make sure the wear strips are situated securely in the
frame slots (Figure 34, item 2).
NOTE
Do not insert the pull pins on the tension end
of the conveyor until the belt has been
installed.
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
4
3
3
2
1
1 Wear strip
1
1
1
2

Dorner Mfg. Corp. 14 851-639 Rev. E
7400 Series CE Nose Bar Conveyors
Installation
Belt Installation
Typical Belt Components (Figure 35)
Figure 35
1. Position the belt on the conveyor frame (Figure 36).
Figure 36
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 37).
Figure 37
4. Insert the belt rod (Figure 38, item 1).
Figure 38
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 39).
Figure 39
8. Insert the pull pins (Figure 40, item 1) on the tension
end of the conveyor.
Figure 40
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 18.
1 Chain belt
2Beltrod
1
2
1
2
1
1

851-639 Rev. E 15 Dorner Mfg. Corp.
7400 Series CE Nose Bar Conveyors
Installation
Belt Return Installation
Typical Belt Return Components (Figure 41)
Figure 41
1. Attach the chain return shoes (Figure 42, item 1) to the
return shaft (Figure 42, item 2).
Figure 42
2. Slide the return shaft (Figure 43, item 1) up and
through the large slot (Figure 43, item 2) in the frame
(picture shown without the belt or wear strips).
Figure 43
3. Push up on the return shaft (Figure 43, 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 44). Belt sag should not exceed 102 mm.
Follow steps 7 – 9 in the “Belt Installation” section on
page 14 to remove slack from the belt.
Figure 44
1 Return shaft
2 Chain return shoe
1
2
1
2
1
2CAUTION
CAUTION
Belt sag should not exceed 102 mm from the
top of the returns.
1
2
Up to 102 mm

Dorner Mfg. Corp. 16 851-639 Rev. E
7400 Series CE Nose Bar Conveyors
Preventive Maintenance and Adjustment
Preventive Maintenan ce 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 45, item 1) that connect the guide
(Figure 45, item 2) to the frame.
Figure 45
2. Remove the pull pin (Figure 46, item 1) on the tension
end of the conveyor to release belt tension.
Figure 46
3. Lift up on the belt (Figure 47).
Figure 47
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

851-639 Rev. E 17 Dorner Mfg. Corp.
7400 Series CE Nose Bar Conveyors
Preventive Maintenance and Adjustment
Conveyors with Tip Up Tails and Lifters
1. Remove the guides, if applicable, by removing the pull
pins (Figure 45, item 1) that connect the guide
(Figure 45, item 2) to the frame.
2. Use the lifter handle (Figure 48, item 1) to raise the
lifters (Figure 48, item 2) and raise the tip up tail
(Figure 48, item 3).
Figure 48
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 18.
• Refer to “Sprocket and Puck Removal” on page 20.
• Refer to “Reassembling Tail Assemblies” on page 24.
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 49, item 1) on the exterior of the bearing shaft
assembly.
Figure 49
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 13.
• Refer to “Belt Return Installation” on page 15.
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
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

Dorner Mfg. Corp. 18 851-639 Rev. E
7400 Series CE Nose Bar Conveyors
Preventive Maintenance and Adjustment
Damage to belt links or rods indicate:
• Excessive load on belt
• Dirt impacted on sprockets
• Excessive or improper side loading
• Improperly positioned accessories
Conveyor Belt Replacement
Conveyors with Guides
1. Remove the pull pins (Figure 50, item 1) that connect
the guide (Figure 50, item 2) to the frame.
Figure 50
2. Remove the guide (Figure 51, item 1).
Figure 51
3. Follow the belt replacement procedures described in
“Standard Belts” on page 18, “Specialty Intralox 1100
Series Belts” on page 19, or “Specialty Intralox 1600
Series Belts” on page 19.
Standard Belts
Replacing a Section of Belt
1. Remove the pull pins (Figure 52, item 1) on the
tension end of the conveyor to release tension on the
belt.
Figure 52
2. Secure the retaining head side of the belt. Use the belt
removal tool (Figure 53, 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 53, item 2).
Figure 53
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

851-639 Rev. E 19 Dorner Mfg. Corp.
7400 Series CE Nose Bar 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 54).
Figure 54
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 55, item 1) and sliding it through the
large hole (Figure 55, item 2) in the frame.
Figure 55
2. Lower the opposite end of the return shaft
(Figure 55, item 1) and slide it out of the frame.
3. Follow steps 1 – 3 in "Standard Belts: Replacing a
Section of Belt" on page 18.
4. Remove the belt.
5. Replace the damaged or worn belt. Refer to “Belt
Installation” on page 14 and “Belt Return Installation”
on page 15.
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 56).
Figure 56
2. Use a second belt rod of the same size to push on the
opposite end of the belt rod. (Figure 57).
Figure 57
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.
Replacing the Entire Belt
1. Remove the belt returns.
2. Follow steps 1 – 2 in "Specialty Intralox 1100 Series
Belts: Replacing a Section of Belt" on page 19.
3. Remove the belt.
4. Replace the damaged or worn belt. Refer to “Belt
Installation” on page 14 and “Belt Return Installation”
page 15.
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.

Dorner Mfg. Corp. 20 851-639 Rev. E
7400 Series CE Nose Bar Conveyors
Preventive Maintenance and Adjustment
Conveyor Belt Tensioning
1. Remove both pull pins (Figure 58, item 1) on the
tension end of the conveyor.
Figure 58
2. Extend the idler tail to the next groove
(Figure 58, item 2) on the bearing shaft.
3. Continue extending the tension end until the belt is
sufficiently tight (Figure 59).
Figure 59
4. Reinsert the pull pins.
5. If no more travel is available, remove one or more belt
links to take up the tension. Refer to “Replacing a
Section of Belt” on page 18.
Sprocket and Puck Removal
1. Remove the conveyor belt to access the sprockets /
pucks. Refer to “Conveyor Belt Replacement” starting
on page 18.
2. Remove the desired sprocket / puck by following these
instructions:
• A - Drive Sprocket Removal
• B - Nose Bar Puck Removal
• C - Idler Puck Removal
WARNING
SEVERE HAZARD!
LOCK OUT POWER before removing guards
or performing maintenance. Exposed moving
parts can cause serious injury.
CAUTION
CAUTION
Belt sag should not exceed 102 mm from the
top of the returns.
1
2
WARNING
SEVERE HAZARD!
LOCK OUT POWER before removing guards
or performing maintenance. Exposed moving
parts can cause serious injury.