Dorner AquaGard 7300 Series User manual

851-568 Rev. C
Installation, Maintenance
& Parts Manua
l
7300 Series Sanitary End Drive Conveyors
Table of Contents
Warnings – General Safety 2. . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Description 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RequiredTools 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Installation Sequence 5. . . . . . . . . . . . . . .
Conveyors Up to 12 ft (3658 mm) 5. . . . . . . . . . . . . . . . .
Conveyors Longer Than 12 ft (3658 mm) 5. . . . . . . . . . . .
Attaching Conveyor to Stands or Mounting Brackets 6. . .
Return Rollers 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2¨ (51 mm) Through 6¨ (152 mm) Wide Flat
Belt and All Cleated Belt Conveyors 7. . . . . . . . . . . .
8¨ (203 mm) Through 18¨ (457 mm) Wide
Flat Belt Conveyors 7. . . . . . . . . . . . . . . . . . . . . . . . .
Preventative Maintenance & Adjustment 9. . . . . . . . . . . . . .
Required Tools 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checklist 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conveyor Bearings 8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Return Rollers 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintaining Conveyor Belt 8. . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conveyor Belt Replacement 9. . . . . . . . . . . . . . . . . . . . . .
Conveyor Belt Replacement Sequence 9. . . . . . . . . . .
A – Belt Removal for Conveyor Without
Gearmotor Mounting Package or Stands 9. . . . . . . . . . . .
B – Belt Removal for Conveyor With Stands
and/or Gearmotor Mounting Package 10. . . . . . . . . . . . .
A – Belt Installation for Conveyor Without
Gearmotor Mounting Package or Stands 11. . . . . . . . . . .
B – Belt Installation for Conveyor With Stands
and/or Gearmotor Mounting Package 12. . . . . . . . . . . . .
Conveyor Belt Tensioning 13. . . . . . . . . . . . . . . . . . . . . . .
Pulley Removal 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A – Drive Pulley Removal 13. . . . . . . . . . . . . . . . . . . .
B – Idler Pulley Removal 14. . . . . . . . . . . . . . . . . . . . .
Bearing Replacement for Drive or Idler Pulley 16. . . . . . .
Bearing Removal 16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bearing Installation 16. . . . . . . . . . . . . . . . . . . . . . . . . .
Pulley Installation 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A – Drive Pulley Installation 14. . . . . . . . . . . . . . . . . . .
B – Idler Pulley Installation 14. . . . . . . . . . . . . . . . . . .
Service Parts 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive End Components 18. . . . . . . . . . . . . . . . . . . . . . . . .
Tension End Components 19. . . . . . . . . . . . . . . . . . . . . . . .
Conveyor Frame and Extensions 20. . . . . . . . . . . . . . . . . .
–21 1” (25mm) Sanitary Bolt–On High Sides 21. . . . . . . .
–22 2” (51mm) Sanitary Bolt–On High Sides 22. . . . . . . .
–23 Sanitary Fully Adjustable UHMW Guides 23. . . . . . .
–24 Sanitary Adjustable Width UHMW Guides 24. . . . . .
Sanitary 2¨ (51 mm) Through 6¨ (152 mm) Wide
Flat Belt and Cleated Belt Return Roller 25. . . . . . . . . .
Sanitary 8¨ (203 mm) Through 18¨ (457 mm) Wide
Flat Belt Return Roller 25. . . . . . . . . . . . . . . . . . . . . . . .
Conveyor Mounting Brackets 26. . . . . . . . . . . . . . . . . . . .
Configuring Conveyor Belt Part Number 27. . . . . . . . . . .
Return Policy 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
851-568 Rev. C 2Dorner Mfg. Corp.
The safety alert symbol, black triangle with white
exclamation, is used to alert you to potential
personal injury hazards.
Ç
Ç
Ç
Ç
Climbing, sitting, walking or
riding on conveyor will
cause severe injury.
KEEP OFF CONVEYORS.
DANGER
Ç
Ç
DANGER
DO NOT OPERATE
CONVEYORS IN AN
EXPLOSIVE ENVIRONMENT.
Ç
Exposed moving parts can
cause severe injury.
LOCK OUT POWER before
removing guards or
performing maintenance.
Ç
Gearmotors may be HOT.
DO NOT TOUCH Gearmotors.
Ç
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 equip-
ment or as part of a multiple
conveyor system, CHECK
FOR POTENTIAL PINCH
POINTS and other mechani-
cal hazards before system
start-up.
Ç
Loosening stand height or
angle adjustment screws
may cause conveyor
sections to drop down,
causing severe injury.
SUPPORT CONVEYOR
SECTIONS PRIOR TO
LOOSENING STAND HEIGHT
OR ANGLE ADJUSTMENT
SCREWS.
Introduction
IMPORTANT: Some illustrations may show guards
removed. Do NOT operate equipment without guards.
Upon receipt of shipment:
DCompare shipment with packing slip. Contact factory re-
garding discrepancies.
DInspect packages for shipping damage. Con tact carrier regar-
ding damage.
DAccessories may be shipped loose. See accessory instruc-
tions for installation.
Dorner’s Limited Warranty applies.
Dorner 7300 Series conveyors are covered by Patent Nos.
5174435, 6109427 and corresponding patents and patent
applications 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 .
Warnings – General Safety

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
Dorner Mfg. Corp. 3851-568 Rev. C
Refer to Figure 1 for typical conveyor components.
A Conveyor
B Gearmotor
C Belt (Flat Belt Shown)
D Mounting Plates
E Return Roller
F Support Stands
G Motor Controller
H Drive End
I Tensioning End
Typical Components
A
B
C
G
HI
F
Figure 1
E
D
Specifications
Flat Belt 7300 Series Sanitary Conveyor
Conveyor Width Reference
Conveyor Length Reference
Belt Type*
Output Shaft Position*
Conveyor Profile*
3 = End Drive Conveyor
Document Language, M = USA English
7 D B M WW LLLL P GG BB
1= No Wiper – with Mounting Brackets
2 = No Wiper – without Mounting Brackets
3 = End Wiper – with Mounting Brackets
4 = End Wiper – without Mounting Brackets
5 = Dual Wiper – with Mounting Brackets
6 = Dual Wiper – without Mounting Brackets
Cleated Belt 7300 Series Sanitary Conveyor
Conveyor Width Reference
Conveyor Length Reference
Output Shaft Position*
Cleat Spacing*
6 = Cleated Belt with Mounting Brackets
7 = Cleated Belt without Mounting Brackets
0 = Low Friction Cleated Belt with Mounting Brackets
1 = Low Friction Cleated Belt without Mounting
Brackets
Document Language, M = USA English
7 D B M WW LLLL P SSSS
Cleat Type (A–J)*
* See “Ordering and Specifications” Catalog for details.
Conveyor Supports:
Maximum Distances:
J = 18¨ (457 mm)**
K= 6 ft (1829 mm)***
L= 18¨ (457 mm)
** For Heavy Load Bottom Mount Package, mount
support under gearmotor.
*** For conveyors longer than 12 ft (3658 mm), install
support at frame joint.
Figure 2
KJ L
Product Description

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
851-568 Rev. C 4Dorner Mfg. Corp.
Specifications:
Conveyor Width
Reference (WW) 02 03 04 05 06 08 10 12 18
Conveyor Belt Width 1.75¨
(44 mm) 2.75¨ (70 mm) 3.75¨ (95 mm) 5¨ (127 mm) 6¨ (152 mm) 8¨ (203 mm) 10¨ (254 mm) 12¨ (305 mm) 18¨ (457 mm)
Maximum Conveyor Load*
(See NOTE Below) 30 lb (14 kg) 35 lb (16 kg) 42 lb (19 kg) 50 lb (23 kg) 60 lb (27 kg) 70 lb (32 kg) 80 lb (36 kg) 80 lb (36 kg) 80 lb (36 kg)
Conveyor Start-up Torque* 4 in-lb
(0.5 Nm) 5 in-lb (0.6 Nm) 6 in-lb (0.7 Nm) 7 in-lb (0.8 Nm) 8 in-lb (0.9 Nm) 10 in-lb (1.1 Nm) 12 in-lb (1.4 Nm) 14 in-lb (1.5 Nm) 15 in-lb (1.7 Nm)
Belt Travel 4.3¨(109 mm) per revolution of pulley
Maximum Belt Speed* 235 feet/minute (72 meters/minute)
Belt Take-up 0.38¨ (10 mm) of stroke = 0.75¨ (19 mm) of belt take-up
Conveyor Length
Reference (LL) 02 03 04 05 06 07 08 09 10 11 12 13** 14** 15** 16** 17** 18**
Conveyor Length
2-ft (610 mm) 3-ft (914 mm)
4-ft (1219 mm)
5-ft (1524 mm)
6-ft (1829 mm) 7-ft (2134 mm)
8-ft (2438 mm)
9-ft (2743 mm)
10-ft (3048 mm)
11-ft (3353 mm)
12-ft (3658 mm)
13-ft (3962 mm)**
14-ft (4267 mm)** 15-ft (4572 mm)**
16-ft (4877 mm)** 17-ft (5182 mm)** 18-ft (5486 mm)**
* See “Ordering and Specifications” Catalog for details. ** Lengths available only in 6¨ (152 mm) & wider conveyors.
NOTE: Maximum conveyor loads are based on:
DNon-accumulating product
DProduct moving towards gearmotor
DConveyor being mounted horizontal
DConveyor being located in a dry environment
DConveyor with standard belt only
Specifications

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
Dorner Mfg. Corp. 5851-568 Rev. C
NOTE:7300 Series sanitary conveyors are shipped
with a “belt travel direction” sticker (M of Figure 3)
installed. After drive is installed and tested, remove
sticker.
Figure 3
M
NOTE: Dorner recommends cleaning all the “food
zones” prior to placing conveyor into service. Insure
adequate access is provided for cleaning and
servicing equipment so that the required level of
hygiene can be maintained.
NOTE: Conveyor MUST be mounted straight, flat,
and level within confines of conveyor. Use a level (N
of Figure 4) during setup.
Figure 4
N
Required Tools
D10 mm wrench (for hexagon head fasteners)
DLevel
DTorque wrench
Recommended Installation Sequence
DAssemble conveyor (if required)
DInstall stands (see accessory instructions)
DAttach stands/mounting brackets to conveyor (see
page 6)
DMount gearmotor mounting package (see accessory
instructions)
DAttach return rollers (see page 7)
DAttach guides/accessories (see “Service Parts” sec-
tion starting on page 18)
Conveyors Up to 12 ft (3658 mm)
No assembly is required. Install stands/mounting brack-
ets and return rollers. Refer to “Attaching Conveyor to
Stands or Mounting Brackets” on page 6 and “Return
Rollers” on page 7.
Conveyors Longer Than 12 ft (3658 mm)
1.Typical components (Figure 5).
O Conveyor frame extension
P M6 x 10 mm Hex Head Cap Screws (12x)
Q Connector Strips (2x)
R Conveyor frame
Frame Extension Components
Figure 5
R
O
Q
P
2.Compress tension end (Figure 6). Refer to steps 4
and 5 under the “Belt Removal for Conveyor
Without Gearmotor Mounting Package or Stands”
on page 9.
Figure 6
Installation

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
851-568 Rev. C 6Dorner Mfg. Corp.
3.Install frame connecting bar (Q of Figure 7) on
conveyor frame (R) with three screws (P). Do not
tighten screws.
Figure 7
P
QR
4.Repeat step 3 for other side of conveyor frame.
5.Install conveyor frame extension (O of Figure 8) on
frame connecting bar (Q) with three screws (P).
Install three screws (P) on opposite side. Tighten all
screws to 92 in-lb (10.4 Nm).
Figure 8
P
O
Q
6.Install conveyor belt. Refer to steps 1 through 3
under “Belt Installation for Conveyor without Gear-
motor Mounting Package or Stands” on page 13.
7.Tension conveyor belt. Refer to “Conveyor Belt
Tensioning” on page 13.
Attaching Conveyor to Stands or
Mounting Brackets
NOTE: Conveyor may be mounted using mounting
brackets as shown in Figures 9 and 10 or directly to
support stands. For direct support stand mounting,
see stand manual.
1.Typical mounting bracket components (Figure 9).
S M6 x 10 mm Hex Head Cap Screw (4x)
T M6 x 12 mm Hex Head Cap Screw (4x)
U Stand/Conveyor Ear Mount Bracket (2x)
V Clamp Plate, Flat Belt (2x)
or
W Clamp Plate, Cleated Belt (2x)
Mounting Bracket Components (One Pair)
Figure 9
T
V
S
U
W
or
2.Attach clamp plate (V or W of Figure 9) to
stand/conveyor ear mount bracket (U) with two
screws (S). Do not tighten screws.
3.Attach stand/conveyor ear mount bracket (U of
Figure 10) to bottom of conveyor (Z). Make sure
notch (AA) on bracket straddles conveyor edge as
shown. Snug–up two screws (S).
Figure 10
S
Z
AA
U
4.Repeat steps 2 and 3 for other mounting bracket(s).
Tighten all screws (S) to 80 in-lb (9 Nm).
Installation

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
Dorner Mfg. Corp. 7851-568 Rev. C
Return Rollers
2¨ (51 mm) Through 6¨ (152 mm) Wide Flat Belt
and All Cleated Belt Conveyors
NOTE: No return rollers are required on conveyor
lengths up to 7 ft (2134 mm). Use one pair of rollers
centered between the tensioning and drive spindles
on 8–15 ft (2438–4572 mm) conveyors. Use two pairs
of rollers at one third distances between the
tensioning and drive spindles on 16–18 ft (4877–5486
mm) conveyors.
1.Return roller components (Figure 11).
AB Mounting Block
AC Clamp Plate
AD Hex Head Cap Screw M6–1.0 x 12mm (2x)
Return Roller Components
Figure 11
AD
AB
AC
2.Loosely attach clamp plate (AC of Figure 12) on
mounting block (AB) with two screws (AD). Do not
tighten screws.
Figure 12
AD AB
AC
3.Attach return roller assembly (AE of Figure 13) on
each side of conveyor (Z). Tighten screws (AD) to 80
in-lb (9 Nm).
Figure 13
AD
AE
Z
4.On 8–18 ft (2338–5486 mm) conveyor, repeat step 3
as necessary for other return rollers.
8¨ (203 mm) Through 18¨ (457 mm) Wide Flat
Belt Conveyors
NOTE: No return rollers are required on conveyor
lengths up to 7 ft (2134 mm). Use one roller centered
between the idler and drive spindles on 8–15 ft
(2438–4572 mm) conveyors. Use two rollers at one
third distances between the idler and drive spindles on
16–18 ft (4877–5486 mm) conveyors.
1.Typical return roller components (Figure 14)
AF Return Roller and Guard Assembly
AG Return Roller Clamp Plate (2x)
AH Hex Head Cap Screw M6–1.0 x 12mm (4x)
Return Roller Components
Figure 14
AH
AF
AG
Installation

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
851-568 Rev. C 8Dorner Mfg. Corp.
2.Loosely attach two clamp plates (AG of Figure 15)
on roller and guard assembly (AF) with four screws
(AH). Do not tighten screws.
Figure 15
AF
AH
AG
AH
3.Attach return roller assembly (AI of Figure 16) on
conveyor (Z). Make sure return roller assembly is
perpendicular with conveyor frame as shown. Tight-
en screws (AH of Figure 15) to 80 in-lb (9 Nm).
Figure 16
AI
Z
90_
4.On 16–18 ft (4877–5486 mm) conveyor, repeat steps
2 and 3 for other return roller.
Preventive Maintenance and Adjustment
Required Tools
DWrenches: 8 mm, 10 mm, 17 mm, 3/8” (or an adjust-
able wrench)
DHex key wrench: 3 mm
Checklist
DKeep service parts on hand (see “Service Parts” sec-
tion for recommendations)
DKeep supply of belt cleaner (part # 625619)
DClean entire conveyor and knurled pulley while dis-
assembled
DReplace worn or damaged parts
Lubrication
Conveyor Bearings
No lubrication is required. Replace bearings if worn.
Return Rollers
No lubrication is required. Replace bearings if worn.
Maintaining Conveyor Belt
Troubleshooting
Inspect conveyor belt for:
DSurface cuts or wear
DStalling or slipping
DDamage to V-guide
Surface cuts and wear indicate:
DSharp or heavy parts impacting belt
DJammed parts
DImproperly installed bottom wiper(s)
DAccumulated dirt in wiper(s)
DForeign material inside the conveyor
DImproperly positioned accessories
DBolt-on guiding is pinching belt
Stalling or slipping indicates:
DExcessive load on belt
DConveyor belt or drive timing belt are not properly
tensioned
DWorn knurl or impacted dirt on drive pulley
DIntermittent jamming or drive train problems
Damage to V-guide indicates:
DTwisted or damaged conveyor frame
DDirt impacted on pulleys
DExcessive or improper side loading
NOTE: Visit www.dorner.com for complete list of
troubleshooting solutions.
Installation

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
Dorner Mfg. Corp. 9851-568 Rev. C
Cleaning
NOTE: Dorner recommends cleaning all the “food
zones” prior to placing conveyor into service. Insure
adequate access is provided for cleaning and
servicing equipment so that the required level of
hygiene can be maintained.
IMPORTANT: Do not use belt cleaners that contain
alcohol, acetone, Methyl Ethyl Ketone (MEK) or other
harsh chemicals.
Use Dorner Belt Cleaner (part # 625619). Mild soap and
water may also be used. Do not soak the belt.
For /05 woven polyester and /06 black anti-static belts,
use a bristled brush to improve cleaning.
Conveyor Belt Replacement
Ç
Ç
Exposed moving parts can
cause severe injury.
LOCK OUT POWER before
removing guards or
performing maintenance.
Conveyor Belt Replacement Sequence (see
Table of Contents for page number)
DRemove old conveyor belt
A - Conveyor without Gearmotor Mounting Package
or Stands
B - Conveyor with Stands and/or Gearmotor
Mounting Package
DInstall new conveyor belt
A - Conveyor without Gearmotor Mounting Package
or Stands
B - Conveyor with Stands and/or Gearmotor
Mounting Package
DTension conveyor belt
A – Belt Removal for Conveyor Without
Gearmotor Mounting Package or Stands
1.If installed, remove and retain two M5 hex head
screws (AJ of Figure 17), bottom wiper (AK) and
two sleeves (AL).
Figure 17
AK
AJ
AL
2.If installed, repeat step 1 for other wiper.
3.If conveyor is equipped with guiding and accesso-
ries or return rollers, remove and retain them as
necessary.
4.Loosen four M6 hex head cap screws (AM of Figures
18 and 19).
Figure 18
AM
5.Retract idler spindle assembly (AN of Figure 19) by
pushing in on it or by turning M6 hex head pinion
screw (AO) clockwise.
Figure 19
AO
AN
AM
Preventive Maintenance and Adjustment

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
851-568 Rev. C 10 Dorner Mfg. Corp.
6.Remove bearing cover (AP of Figure 20) from drive
end of conveyor.
Figure 20
AP
7.Using a 3mm hex key wrench (AQ of Figure 21),
loosen two set screws (AR) on bearing and head
plate assembly (AS).
Figure 21
APAR
AR
AS
AQ
8.Remove three hex head screws (AT and AU of Figure
22) from bearing and head plate assembly (AS),
cross support post (AV of Figure 23) and conveyor
(Z).
Figure 22
AS
AT
Z
AU
9.Rotate bearing and head plate assembly (AS of
Figure 23) down and then off of cross support post
(AV) and drive spindle (AW).
Figure 23
AS
AW
AV
10.Remove conveyor belt (AX of Figure 24).
Figure 24
AX
B – Belt Removal for Conveyor With Stands
and/or Gearmotor Mounting Package
NOTE:For conveyor with a Heavy Load Bottom or
Top Gearmotor Mounting Package, bracket (AY of
Figure 25) must be removed.
DRemove two M6x30 mm hex head cap screws and
spacers (AZ).
DRemove two M6x16 mm hex head cap screws
(BA).
DRemove bracket (AY).
Preventive Maintenance and Adjustment

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
Dorner Mfg. Corp. 11 851-568 Rev. C
Figure 25
AZ
AY
BA
BB
1.Perform steps 1 through 9 under “Belt Removal for
Conveyor Without Gearmotor Mounting Package or
Stands”.
Ç
Ç
The weight of the gearmotor is all on one end of the
conveyor which could cause it to tip off the stands
when the mounting clamp plates are loosened. Be
sure to provide support (BB of Figures 25 and 26)
underneath the gearmotor while changing the belt.
2.Place a temporary support (BB of Figures 25 and 26)
under gearmotor mounting package.
Figure 26
BB
3.Loosen two clamp plate screws (S of Figure 27) on
side of conveyor opposite drive motor.
Figure 27
S
4.Repeat step 3 for remaining stand/conveyor ear
mount brackets or stand assemblies on same side of
conveyor.
5.Raise conveyor and remove conveyor belt (AX of
Figure 28).
Figure 28
AX
6.If a new belt will not be installed immediately,
secure conveyor with stand/conveyor ear mount
brackets or stand assemblies.
A – Belt Installation for Conveyor without
Gearmotor Mounting Package or Stands
1.Orient conveyor belt so the splice leading fingers
(BD of Figure 29) point in the direction of belt travel
(BE).
Figure 29
BD
BE
Preventive Maintenance and Adjustment

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
851-568 Rev. C 12 Dorner Mfg. Corp.
2.Slide belt (AX of Figure 24) onto the conveyor frame
assembly.
3.Install bearing and head plate assembly (AS of
Figure 30) onto drive spindle (AW).
Figure 30
AS
AW
AV
4.Rotate bearing and head plate assembly (AS of
Figure 31) up between inside of conveyor (Z) and
cross support post (AV). Make sure cross support
post engages slot (BF) in head plate.
Figure 31
AS
BF
AV
Z
5.Install three hex head screws (AT and AUof Figure
22) to secure bearing and head plate assembly (AS
of Figure 31) to cross support post (AV) and
conveyor (Z).
6.Using a 3mm hex key wrench (AQ of Figure 21),
tighten two set screws (AR) on bearing (AS).
7.Install bearing cover (AP of Figure 20) on drive end
of conveyor.
8.If removed, install sleeves (AL of Figure 17), bottom
wiper(s) (AK) and M5 hex head screws (AJ). Tighten
screws to 33 in-lb (3.7 Nm).
9.Tension belt. Refer to “Conveyor Belt Tensioning” on
page 13.
10.If removed, install return rollers, guiding and
accessories.
B – Belt Installation for Conveyor with
Gearmotor Mounting Package and/or Stands
IMPORTANT: On a flat belt conveyor, the wiper is
installed on discharge end. Belt travel direction is
identified by an arrow decal on the drive cover (BC of
Figure 32).
Figure 32
BC
1.Orient conveyor belt so that the splice leading fin-
gers (BD of Figure 29) point in the direction of belt
travel (BE) as identified by the label (BC of Figure
32).
2.Slide belt (AX of Figure 28) onto conveyor frame
assembly.
3.Tighten two clamp plate screws (S of Figure 27)
4.Repeat step 3 for remaining stand/conveyor ear
mount brackets or stand assemblies.
5.Install bearing and head plate assembly following
steps steps 3 through 7 under “Belt Installation for
Conveyor Without Gearmotor Mounting Package or
Stands” on page 11.
6.If removed, install sleeves (AL of Figure 17), bottom
wiper(s) (AK) and M5 hex head screws (AJ). Tighten
screws to 33 in-lb (3.7 Nm).
7.For a conveyor with a Heavy Load Bottom or Top
Mounting package, install bracket (AZ of Figure
25).
8.Tension belt. Refer to “Conveyor Belt Tensioning” on
page 13.
9.If removed, install return rollers, guiding and
accessories.
Preventive Maintenance and Adjustment

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
Dorner Mfg. Corp. 13 851-568 Rev. C
Conveyor Belt Tensioning
Ç
Ç
Exposed moving parts can
cause severe injury.
LOCK OUT POWER before
removing guards or
performing maintenance.
1.On tension end of the conveyor, loosen two M6 hex
head cap screws (AM of Figure 33) on each side of
conveyor.
Figure 33
AN
BH
AM
NOTE: Do not exceed a torque of 25 in-lb (2.8 Nm)
for 2¨ to 12¨ (44 mm to 305 mm) wide conveyors or 40
in-lb (4.5 Nm) for an 18¨ (457 mm) wide conveyor on
tensioning screw (BH). Over-tensioning the
conveyor belt could cause excessive pulley bearing
load and early failure.
2. Extend idler spindle assembly (AN) by turning M6
hex head screw (BH) clockwise to sufficiently
tension belt to handle conveyor load.
3. Tighten four M6 hex head screws (AM) to 40 in-lb
(4.5 Nm) to secure idler spindle assembly (AN).
NOTE: If the maximum take-up stroke is achieved,
replace the conveyor belt.
Pulley Removal
Ç
Ç
Exposed moving parts can
cause severe injury.
LOCK OUT POWER before
removing guards or
performing maintenance.
Remove conveyor belt to access pulley(s). See “Convey-
or Belt Replacement” on page 9. Remove the desired
pulley following instructions:
DA– Drive Pulley Removal
DB– Idler Pulley Removal
A– Drive Pulley Removal
Ç
Drive shaft keyway may be
sharp.
HANDLE WITH CARE.
1.Remove the gearmotor mounting package. See
accessory instructions.
NOTE:Two screws (BI of Figure 34)were removed in
step 1.
If conveyor is in the upright position, cross support
post (AV) will not be secure and may drop when
screws (BJ of Figure 34 and AU of Figure 35) are re-
moved.
2.Remove screw (BJ) from conveyor (Z) and cross
support post (AV).
Figure 34
BI BJ
AV
Z
BL
3.Remove screw (AU of Figure 35) and cross support
post (AV) from conveyor (Z) and drive spindle
assembly (BL).
Preventive Maintenance and Adjustment

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
851-568 Rev. C 14 Dorner Mfg. Corp.
NOTE: For a conveyor with a Heavy Load Bottom or
Top Gearmotor Mounting Package, the two screws
(BK of Figure 35) were removed in step 1.
If conveyor is in the upright position, drive spindle
assembly (BL of Figure 35) will not be secure and
may drop when screws (AU, BJ and BK of Figures 34
and 35) are removed.
4.Remove two screws (BK of Figure 35) and drive
spindle assembly (BL) from conveyor (Z).
Figure 35
BK
BL
AU
AV
5.On closed end of drive spindle assembly (BL of
Figure 36), use a screwdriver to pry off bearing cover
(AP).
Figure 36
BL
AP
6.Using a 3mm hex key wrench (AQ of Figure 37),
loosen two set screws (AR) on bearing and head
plate assembly (AS).
Figure 37
AR AR
AQ
BN
BM
AS
7.Remove bearing and head plate assembly (AS of
Figure 38) from drive spindle (AW).
Figure 38
AW
AS
8.Repeat steps 6 and 7 for opposite side of drive
spindle.
NOTE: If bearings (BM of Figure 37) require removal
from head plates (BN), see “Bearing Removal” on page
16.
B– Idler Pulley Removal
1.While holding hex pinion (BO of Figure 39) with a
3/8” open–end wrench, loosen M6 hex head cap
screw (AO).
Preventive Maintenance and Adjustment

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
Dorner Mfg. Corp. 15 851-568 Rev. C
Figure 39
AO
BO
2.Remove M6 hex head cap screw (AO of Figure 40)
and sleeve (BP) from conveyor (Z) and hex pinion
(BO).
Figure 40
AO BP Z
BO
AM
3.Repeat steps 1 and 2 for screw (BH of Figure 41) on
opposite side of conveyor.
4.Remove two M6 hex head cap screws (AM) from
each side of conveyor.
5.Remove two pinion ends (BQ), clamp blocks (BR),
hex pinion (BO), two spacers (BS) and tail assembly
(AN) from conveyor (Z).
Figure 41
BO
BS
Z
AN
BR
BQ
BS
BH
AM
AM
AO BP
BQ
BP
6.Use a screwdriver to remove bearing cover (BT of
Figure 42) from tail assembly (AN).
Figure 42
BT
AN
7.Using a 3mm hex key wrench (AQ of Figure 43),
loosen two set screws (BU) on bearing and head
plate aseembly (BV) .
Figure 43
AQ
BU
BV
8.Remove bearing and head plate assembly (BV of
Figure 44) from idler spindle (BW).
Figure 44
BV
BW
9.Repeat steps 6, 7 and 8 for opposite side of idler
spindle.
Preventive Maintenance and Adjustment

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
851-568 Rev. C 16 Dorner Mfg. Corp.
Bearing Replacement for Drive or Idler
Pulley
Bearing Removal
1.Using a 17 mm wrench, remove two hex head screws
(BX of Figure 45) from bearing (BY) and head plate
(BZ).
Figure 45
BX
BY
BZ
Bearing Installation
1.Install bearing (BY of Figure 45) on head plate(BZ)
with two hex head screws (BX). Tighten screws to 36
ft–lb (49 Nm).
Pulley Installation
A – Drive Pulley Installation
1.Make sure bearing surfaces on drive spindle are free
of nicks and burrs. Slide bearing and head plate
assembly (AS of Figure 38) on drive spindle (AW).
2.Repeat step 1 for opposite side of drive spindle.
3.Position drive spindle assembly (BL of Figure 35) on
conveyor (Z) and loosely secure with two screws
(BK).
4.Install cross support post (AV of Figure 35) and
secure with two screws (BJ of Figure 34 and AU of
Figure 35). Tighten screws to 33 in–lb (3.7 Nm).
IMPORTANT: Before tightening set screws on
bearing and head plate assemblies, make sure that
center of groove (CA of Figure 46) on spindle (AW) is
in line with center of groove (CB) on conveyor (Z).
Figure 46
CA
CB
AW
Z
5.Make sure center of groove (CA of Figure 46) on
spindle (AW) is aligned with center of groove (CB)
on conveyor (Z).
6.Using a 3mm hex key wrench (AQ of Figure 37),
tighten two set screws (AR) on each bearing and
head plate assembly (AS).
7.On closed end of drive spindle assembly (BL of
Figure 36), install bearing cover (AP).
8.Install gearmotor mounting package. See accessory
instructions.
B – Idler Pulley Installation
1.Make sure bearing surfaces on idler spindle are free
of nicks and burrs. Slide bearing and head plate
assembly (BV of Figure 44) on idler spindle (BW).
2.Repeat step 1 for opposite side of idler spindle.
IMPORTANT: Loosely install a spacer (BS of
Figures 41 and 47) on each side of tail assembly (AN)
prior to installing tail assembly on conveyor.
Figure 47
BS AN
3.Position tail assembly (AN) and two spacers (BS) on
conveyor (Z).
Preventive Maintenance and Adjustment

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
Dorner Mfg. Corp. 17 851-568 Rev. C
IMPORTANT: During idler pulley installation, orient
both pinion ends (BQ of Figure 48) so they engage the
same tooth positions on their respective racks.
Figure 48
BQ
CC CD
BW
Z
4.Loosely install two pinion ends (BQ of Figures 41
and 48), hex pinion (BO) and clamp blocks (BR) on
tail assembly (AN) and conveyor (Z) with four
M6x20mm hex head cap screws (AM of Figure 40),
two sleeves (BP) and two M6x25mm hex head cap
screws (AO).
5.While holding hex pinion (BO of Figure 39) with a
3/8” open–end wrench, tighten two screws (AO of
Figure 39 and BH of Figure 41) to 33 in–lb (3.7 Nm).
6.Tighten four screws (AM of Figure 40) to 33 in–lb
(3.7 Nm).
IMPORTANT: Before tightening set screws on
bearing and head plate assemblies, make sure that
center of groove (CC of Figure 48) on spindle (BW) is
in line with center of groove (CD) on conveyor (Z).
7.Make sure center of groove (CC of Figure 48) on
spindle (BW) is aligned with center of groove (CD)
on conveyor (Z).
8.Using a 3mm hex key wrench (AQ of Figure 43),
tighten two set screws (BU) on each bearing and
head plate assembly (BV).
9.Install two bearing covers (BT of Figure 42) on tail
assembly (AN).
10.Install gearmotor mounting package. See accessory
instructions.
Preventive Maintenance and Adjustment

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
851-568 Rev. C 18 Dorner Mfg. Corp.
NOTE: For replacement parts other than those shown in this section, contact an authorized Dorner Service
Center or the factory. Key Service Parts and Kits are identified by the Performance Parts Kits logo . Dorner
recommends keeping these parts on hand.
Drive End Components
2
10
11
5
1
7
6
15
16
3
17
4
18
19
20 Drive Tail Kit 21 Drive Spindle Kit
13
12 14
89
Item Part Number Description
1 802–133 Bearing Cover
2 961016MSS Hex Head Cap Screw M10–1.5x16mm
3 456055 Head Plate, Fixed, Welded
4 4588WW Cross Support Post
5 4575WW Drive Spindle, SS
6 980422MSS Square Key 4mm x 22mm
7 456080 Flange Bearing Assembly (Includes
Items 8 and 9)
8 807–1336 Plastic Plug
9 810–187 Grease Fitting, SS 1/4–28
10 960620MSS Hex Head Cap Screw M6–1.0x20mm
11 960616MSS Hex Head Cap Screw M6–1.0x16mm
12 4557WW Washdown Wiper Option
13 456049 Sleeve
14 960520MSS Hex Head Cap Screw M5–0.80 x 20mm
15 456034 Name Tag
16 914–008 Rivet
17 807–1301 Spacer
18 960612MSS Hex Head Cap Screw M6–1.0x12mm
19 4525WWMSS Frame Support Post
20 73DT–WW Drive Tail Kit w/o Wiper (Includes Items
1 through 11)
73DTWA–WW Drive Tail Kit w/Wiper – Shaft Position A
or B (Includes Items 1 through 14)
73DTWD–WW Drive Tail Kit w/Wiper – Shaft Position C
or D (Includes Items 1 through 14)
21 73DS–WW Drive Spindle Kit (Includes Items 1, 2,
and 5 through 9)
WW = Conveyor width ref.: 02, 03, 04, 05, 06, 08, 10, 12, 18
Service Parts

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
Dorner Mfg. Corp. 19 851-568 Rev. C
Tension End Components
1
7
12
11
5
10
3
6
13
15
14
4
16
2
20 Tensioning Tail Kit
21 Tensioning Spindle Kit
18
17
19
8
9
Item Part Number Description
1 4525WWSS Frame Support Post
2 960612MSS Hex Head Cap Screw M6–1.0x12mm
3 960625MSS Hex Head Cap Screw M6–1.0x25mm
4 960620MSS Hex Head Cap Screw M6–1.0x20mm
5 961016MSS Hex Head Cap Screw M10–1.5 x
16mm
6 802–133 Bearing Cover
7 456080 Flange Bearing Assembly (Includes
Items 8 and 9)
8 807–1336 Plastic Plug
9 810–187 Grease Fitting, SS 1/4–28
10 456057 Head Plate Tension RH
11 4576WW Idler Spindle SS
12 456058 Head Plate Tension LH
13 456041 Clamp Block
14 456045 Pinion End
15 4563WW Hex Pinion
16 456049 Sleeve .312 OD x .035 Wall
17 4557WW Washdown Wiper Option
18 456049 Sleeve
19 960520MSS Hex Head Cap Screw M5–0.80 x
20mm
20 73TT–WW Tension Tail Kit w/o Wiper (Includes
Items 3 through 16)
73TTW–WW Tension Tail Kit w/Wiper (Includes
Items 3 through 19)
21 73TS–WW Tension Spindle Kit (Includes Items 5,
6, 7, 8, 9, and 11)
WW = Conveyor width ref.: 02, 03, 04, 05, 06, 08, 10, 12, 18
Service Parts

7300 Series Sanitary End Drive Conveyors Installation, Maintenance & Parts Manual
851-568 Rev. C 20 Dorner Mfg. Corp.
Conveyor Frame and Extension
2
1
3
4
Item Part Number Description
1 456046 Frame Connecting Bar
2 960610MSS Hex Head Cap Screw M6–1.0x10mm
3See Conveyor
Frame chart Conveyor Frame
4See Conveyor
Frame chart Conveyor Frame Extension
Items 3 and 4: Conveyor Frame
Length Frame Part Number Frame Extension
Part Number
2’ (610mm) 4730WW–01860 n/a
3’ (914mm) 4730WW–03060 n/a
4’ (1219mm) 4730WW–04260 n/a
5’ (1524mm) 4730WW–05460 n/a
6’ (1829mm) 4730WW–06660 n/a
7’ (2134mm) 4730WW–07860 n/a
8’ (2438mm) 4730WW–09060 n/a
9’ (2743mm) 4730WW–10260 n/a
10’ (3048mm) 4730WW–11460 n/a
11’ (3353mm) 4730WW–12660 n/a
12’ (3658mm) 4730WW–13860 n/a
13’ (3962mm) 4730WW–07860 4750WW
14’ (4267mm) 4730WW–09060 4750WW
15’ (4572mm) 4730WW–10260 4750WW
16’ (4877mm) 4730WW–11460 4750WW
17’ (5182mm) 4730WW–12660 4750WW
18’ (5486mm) 4730WW–13860 4750WW
WW = Conveyor width ref.: 02, 03, 04, 05, 06, 08, 10, 12, 18
Service Parts