Flexco MMP Precleaner Installation, Operation And Maintenance Manual

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www.ﬂexco.com

Installation, Operation

and Maintenance Manual

MMP Precleaner

Page 2

2 MMP Precleaner

MMP Precleaner

Serial Number:

Purchase Date:

Purchased From:

Installation Date:

Serial number information can be found on the Serial Number Label included in the Information Packet found in the cleaner carton.

is information will be helpful for any future inquiries or questions about belt cleaner replacement parts, specications or troubleshooting.

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Table of Contents

Section 1 - Important Information ...................................................................................................4

1.1 General Introduction ...........................................................................................................................4

1.2 User Benets .........................................................................................................................................4

1.3 Service Option ......................................................................................................................................4

Section 2 - Safety Considerations and Precautions ..........................................................................5

2.1 Stationary Conveyors ...........................................................................................................................5

2.2 Operating Conveyors ...........................................................................................................................5

Section 3 - Pre-Installation Checks and Options ..............................................................................6

3.1 Checklist ................................................................................................................................................6

3.2 Cleaner Location Adjustments ...........................................................................................................7

3.3 Optional Installation Accessories .......................................................................................................8

3.4 Correct Blade Installation and Tensioning .......................................................................................9

Section 4 - Installation Instructions ................................................................................................10

Section 5 - Pre-Operation Checklist and Testing ............................................................................ 14

5.1 Pre-Op Checklist ................................................................................................................................14

5.2 Test Run the Conveyor ......................................................................................................................14

Section 6 - Maintenance...................................................................................................................15

6.1 New Installation Inspection ..............................................................................................................15

6.2 Routine Visual Inspection .................................................................................................................15

6.3 Routine Physical Inspection .............................................................................................................15

6.4 Blade Replacement Instructions .......................................................................................................16

6.5 Maintenance Log ................................................................................................................................18

6.6 Cleaner Maintenance Checklist ........................................................................................................19

Section 7 - Troubleshooting ............................................................................................................20

Section 8 - Specs and CAD Drawings ..............................................................................................21

8.1 Specs and Guidelines .........................................................................................................................21

8.2 CAD Drawings ...................................................................................................................................22

Section 9 - Replacement Parts .........................................................................................................24

Section 10 - Other Flexco® Conveyor Products ...............................................................................27

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4 MMP Precleaner

Section 1 - Important Information

We at Flexco® are very pleased that you have selected an MMP Belt Cleaner for your conveyor system.

is manual will help you to understand the operation of this product and assist you in making it work up to

its maximum eciency over its lifetime of service.

It is essential for safe and ecient operation that the information and guidelines presented be properly

understood and implemented. is manual will provide safety precautions, installation instructions, maintenance procedures and troubleshooting tips.

If, however, you have any questions or problems that are not covered, please visit our web site or contact our

Customer Service Department:

Customer Service: +27-11-608-4180

Visit www.ﬂexco.com for other Flexco locations and products.

Please read this manual thoroughly and pass it on to any others who will be directly responsible for

installation, operation and maintenance of this cleaner. While we have tried to make the installation and service tasks as easy and simple as possible, it does however require correct installation and regular

inspections and adjustments to maintain top working condition.

1.2 User Benets

Correct installation and regular maintenance will provide the following benets for your operation:

• Reduced conveyor downtime

• Reduced man-hour labor

• Lower maintenance budget costs

• Increased service life for the belt cleaner and other conveyor components

1.3 Service Option

e MMP Precleaner is designed to be easily installed and serviced by your on-site personnel. However, if

you would prefer complete turn-key factory service, please contact your local Flexco Field Engineer or your Flexco Distributor.

1.1 General Introduction

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Section 2 - Safety Considerations and Precautions

Before installing and operating the MMP Precleaner, it is important to review and understand the following safety information.

ere are set-up, maintenance and operational activities involving both stationary and operating conveyors. Each case has a safety protocol.

2.1 Stationary Conveyors

e following activities are performed on stationary conveyors:

• Installation • Blade replacement • Repairs

• Tension adjustments • Cleaning

DANGER

WARNING

It is imperative that OSHA/MSHA Lockout/Tagout (LOTO) regulations, 29 CFR 1910.147, be followed before undertaking the preceding activities. Failure to use LOTO exposes workers to uncontrolled behavior of the belt cleaner caused by movement of the conveyor belt. Severe injury or death can result.

Before working:

• Lockout/Tagout the conveyor power source

• Disengage any takeups

• Clear the conveyor belt or clamp securely in place

Use Personal Protective Equipment (PPE):

• Safety eyewear

• Hardhats

• Safety footwear

Close quarters, springs and heavy components create a worksite that compromises a worker’s eyes, feet and skull. PPE must be worn to control the foreseeable hazards associated with conveyor belt cleaners. Serious injuries can be avoided.

2.2 Operating Conveyors

ere are two routine tasks that must be performed while the conveyor is running:

• Inspection of the cleaning performance

• Dynamic troubleshooting

Every belt cleaner is an in-running nip hazard. Never touch or prod an operating cleaner. Cleaner hazards cause instantaneous amputation and entrapment.

Never adjust anything on an operating cleaner. Unforseeable belt projections and tears can catch on cleaners and cause violent movements of the cleaner structure. Flailing hardware can cause serious injury or death.

Belt cleaners can become projectile hazards. Stay as far from the cleaner as practical and use safety eyewear and headgear. Missiles can inict serious injury.

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6 MMP Precleaner

Section 3 - Pre-installation Checks and Options

• Check that the cleaner size is correct for the beltline width

• Check the belt cleaner carton and make sure all the parts are included

• Review the “Tools Needed” list on the top of the installation instructions

• Check the conveyor site:

- Will the cleaner be installed on a chute

- Is the install on an open head pulley requiring mounting structure (see 3.3 - Optional Installation Accessories)

- Are there obstructions that may require cleaner location adjustments (see 3.2 - Cleaner Location Adjustments)

3.1 Checklist

Page 7

In certain applications it is necessary to modify the location of the precleaner pole due to permanent

obstacles that obstruct the desired location. Relocating the pole location can be done easily and does not hinder the performance of the cleaner as long as the “C” dimension is maintained.

NOTE: In the following example we will be lowering the pole location in the “Y” direction, but the same

method could also be applied in the “X” direction.

Conveyor situation:

Pulley Diameter: 610mm (24") X = 321mm (12 5/8") Y = 305mm (12") C = 441mm (17 3/8")

1. Determine the given location dimensions and deﬁne the change needed. Aer laying out the given X &

Y dimensions, determine the distance of the modication required for adequate clearance of the pole and tensioning system. (In the example we decide to lower the pole 50mm (2") to clear the support structure).

2. Write down known dimensions. We can now determine two of the three required dimension which will

allow us to nd the third. We know we cannot alter the “C” dimension, so this will remain the same. Also we are required to lower the unit in the “Y” dimension 50mm (2"), so we add 50mm (2") to the given “Y” dimension.

X = ?" Y = 306 + 50 = 356mm (12 + 2 = 14") C = 441mm (17 3/8")

3. Determine ﬁnal dimension. On a at vertical surface, using a level, draw one horizontal line and one

vertical line creating a right triangle (Fig 3a). Measure down from the intersection the determined “Y” dimension and mark (Fig 3b). With the tape measure starting at the modied “Y” mark, swing the tape across the “X” line and mark at the “C” dimension where it crosses the “X” line (Fig 3c). Measure from the intersection to the “C” intersection and this will be your new “X” dimension (Fig. 3d).

X = 260mm (10 1/4") Y = 356mm (14") C = 441mm (17 3/8")

24" (600mm)

Fig. 3a Fig. 3b Fig. 3c

Fig. 3d

mark

This distance is new “X” dimension

C 441mm (17 3/8")

Y 356mm (14")

260mm (10 1/4")

3.2 Cleaner Location Adjustments

Section 3 - Pre-Installation Checks and Options (cont.)

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8 MMP Precleaner

Section 3 - Pre-Installation Checks and Options (cont.)

3.3 Optional Installation Accessories

76071 Standard Mounting Bracket Kit

• For most secondary cleaner installs.

76072 Long Mounting Bracket Kit

• For installations that require extra length legs.

76073 Optional Top Angle Kit

• Used with both standard and long mounting bracket kits for additional mounting options.

Versatile, adjustable brackets and plates that can be mounted on the conveyor structure so precleaners and secondary cleaners can be easily and quickly bolted into place.

75830 Optional Mounting Bar Kit (with bolts, nuts and washers)

• For mounting precleaners on open head pulleys.

• Weld on both sides of pulley and bolt on steel plates.

• 38mm W x 406mm L (1-1/2" x 16") with (4) 16-279mm (5/8-11") tapped holes

76537 Mounting Plate Kit (incl. 2 plates)

• For use with Mounting Bars to mount cleaners on open head pulleys.

• 406 x 813mm (16" x 32") with (4) 16mm (5/8") holes

*Hardware Included Lead time: 1 working day

Provides 762mm (30") of extended pole length. Lead time: 1 working day

Optional Mounting Kits (incl. 2 brackets/bars)

Description

Ordering

Number

Item

Code

Wt.

kg.

Standard Mounting Bracket Kit* SSTSMB 76071 15 Long Mounting Bracket Kit* SSTLMB 76072 19 Optional Top Angle Kit* SSTOTA 76073 4 Optional Mounting Bar Kit * MMBK 75830 8 Mounting Plate Kit (incl. 2 plates) MMPK 76537 63

Pole Extender Kit (incl. 2 pole extenders)

Description

Ordering

Number

Item

Code

Wt.

kg.

Pole Extender Kit MAPEK 76024 9

Specs and Notes:

• Standard brackets are 330mm W x 394mm L (13" x 15 1/2").

• Long brackets are 330mm W x 546mm L (13" x 21-1/2").

• Mounting bars are 38mm W x 406mm L (1-1/2" x 16") with (4) 16-279mm (5/8-11") tapped holes.

• Mounting plates are 406 W x 813mm L (16" x 32") (4) 16mm (5/8") holes.

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3.4 Correct Blade Installation and Tensioning

For optimal cleaning eciency and long wear life, the TuShear™ blade must be located and tensioned correctly on the belt head pulley. If the cleaner pole is in the wrong location the performance of the new blade may be adversely aected. See “Possible Problems” below. For tensioning, please follow these instructions.

Incorrect: no gap

Correct Tension: Full contact between blade face and belt

Fig. 4

Tip pushed away from belt

Incorrect: Larger than 3mm (1/8") gap

Fig. 2 Fig. 3

Correct Tensioning:

e blade should be tensioned until the gap is gone (Fig. 4).

Possible Problems:

• Pole location too far out - e initial blade/belt contact gap will be larger than 3mm (1/8") (Fig. 2). If the blade is correctly tensioned it may ip through before it is fully worn. If tensioned too lightly, it will develop the “smile eect” quickly and not clean prop e r l y.

• Pole location too far in - If there is no gap at the initial blade/belt contact (Fig. 3), the tip of the blade may not be touching the belt. In this case, the blade will push away and lose its shearing (cleaning) eect. e blade may also develop a ap at the tip which may trap material.

Correct Location:

When blade contact is made against the head pulley (prior to tensioning) there should be a 1.6mm (1/16") to 3mm (1/8") gap at the bottom of the blade face (Fig. 1).

For optimal cleaning and reduced blade retensioning, the cleaner blade width should be sized to t the material path of the belt. e material path is typically the center 2/3 of the belt width. Choosing a blade only slightly wider than the material path can decrease dierential blade wear which reduces blade retensioning maintenance, as well as reducing the frequency of blade replacement.

e “Material Path” Option

Fig. 1

Correct Location: 3mm (1/8") gap at initial blade/belt contact

Section 3 - Pre-Installation Checks and Options (cont.)

Match blade width to belt’s material path

Material Path

Belt Width

Blade Width

Material Path

Belt Width

Blade Width

Belt Width Minus 450mm (18")

Material Path

Belt Width

Blade Width

Belt Width Minus 150mm (6")

Belt Width Minus 300mm (12")

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10 MMP Precleaner

Section 4 - Installation Instructions - MMP Precleaner

1. Find the X, Y & C speciﬁcations. Measure the pulley diameter (including

the belt and the lagging) (Fig. 1).

Pulley Diameter ____"; X=____"; Y=____"; C=____".

(Adjustments can be made to the X & Y coordinates to move away from

obstacles as long as the C dimension remains constant. See Section 3.2.)

Maximum lump size + 203mm (8")

Chute Wall

Recommended spacing from back chute wall

CAUTION: Components may be heavy. Use safety-approved liing procedures.

Pole Location Specs

Fig. 1

Pulley Diameter

(incl. belt and

lagging)

PHYSICALLY LOCK OUT AND TAG THE CONVEYOR AT THE POWER

SOURCE BEFORE YOU BEGIN CLEANER INSTALLATION.

Tools Needed:

X & Y Chart for Pole Location

A X Y C

400 204 305 367 425 218 305 375 450 231 305 383 475 244 305 390 500 259 305 400 525 274 305 410 550 288 305 419 575 300 305 428 600 315 305 438 625 328 305 448 650 341 305 457 675 353 305 467 700 366 305 476 725 380 305 487 775 392 305 497 775 403 305 506 825 417 305 517 825 432 305 528 850 444 305 539 875 457 305 549 900 469 305 559 925 483 305 571 950 496 305 582

975 508 305 592 1000 521 305 604 1025 533 305 614 1050 550 305 629 1075 569 305 646 1100 584 305 659 1125 601 305 674 1150 615 305 686 1175 632 305 702 1200 645 305 714

MMP Parts List

MOUNTING PLATE

SPRING

TuffShear™ BLADE

BLADE PIN

CENTER POLE

PIVOT ARM

PIVOT SHAFT BRACKET

TORQUE ARM

EXTENDER POLE

- Tape measure

- Level

- 19mm (3/4") combination wrench

- Ratchet with 19mm (3/4") socket

- Marking pen or soapstone

- Adjustable pliers

- Large adjustable wrench

- Torch or welder

Page 11

6. Center the cleaner on the belt and lock in place. Reinstall the blade

(Fig 6a). Slide the pole until the blade is centered or covers the material path (Fig. 6b). NOTE: Standard blade coverage is belt width minus 6". If less blade coverage is required, there are additional blade hole positions available on the pole for use of belt width minus 305 & 457mm (12" & 18"). Adjust the extender poles until the pole ends extend out past the mounting plates at least 150mm (6") on each side for the tensioner installation (Fig. 6c). Slide the extender poles in the center pole to align with the center pole mounting holes and insert both bolts. Lock the four center pole locking bolts and tighten the locking bolt jam nuts.

3. Mark and cut the mounting base holes. Using the

mounting base template provided in the instruction packet, position the large pole hole of the template on the chute with the hole notches aligned with the layout lines. Trace the pole hole and mounting holes (Fig. 3). Each base can be mounted in any position 360° around the pole as long as the pole’s center point does not change. Cut the holes on both sides of the chute.

4. Assemble the extender poles to the center pole. Insert the

extender poles through the chute holes and into the center pole (Fig. 4). Leave the locking bolts loose.

5. Install the mounting plates. Position both mounting plates

with the keyways toward the pulley and weld or bolt the mounting plates in place using bolts provided (Fig. 5).

2. Lay out the dimensions on the chute wall. Measure out the X

dimension horizontally from the center of the pulley sha and mark. (NOTE: It may be easier to put a level on top of the pulley sha, draw a horizontal line and then measure down half the diameter of the sha and make a line from the front of the sha. Now subtract half the pulley sha diameter from the X coordinate and measure on the line and make a mark.) en measure down vertically the Y dimension and mark. is is the correct position for the center of the cleaner pole (Fig. 2). Lay out and mark the same dimensions on the other side.

mark

Fig. 2

mark

Chute wall (cut away)

Fig. 4

CENTER POLE

Slide pole to center blade or cover belt’s material path

EXTENDER POLE

Chute wall (cut away)

Fig. 5

Keyway toward pulley

Fig. 6a

Fig. 6b

Reinstall blade and insert pins

MOUNTING PLATE

Slide plates onto pole ends and weld or bolt in place

150mm (6") of pole end must extend outside the mounting base on each side

Tighten locking bolts and jam nuts (both ends)

Fig. 6c

Insert 2 bolts

Center large template hole notches on pole center mark,

rotate to desired angle and trace holes

Template for PST mounting base

Template for AWT/NT mounting base

Fig. 3

Section 4 - Installation Instructions - MMP Precleaner

Page 12

12 MMP Precleaner

8S. Reassemble the spring assembly. Slide the spring, washer and

bushings onto the pivot arm and turn the two adjusting nuts so about 6mm (1/4") of the pivot arm is exposed above the nuts (Fig. 8).

7S. Install the QMT spring tensioner. Remove the adjusting nuts

and springs from the pivot rod. Insert the pivot arm through the slot in the torque arm. Slide the torque arm onto the pole end (be sure the rotation of the arm is correct to tension the blade) and rotate it until the pivot sha bracket lines up with the desired bolt holes (Fig. 7). Remove bolts, nuts and washers from mounting plate and reinstall through pivot sha bracket and mounting plate.

Fig. 7

Fig. 8

PIVOT ARM

TORQUE ARM

MOUNTING PLATE

PIVOT SHAFT BRACKET

POLE

ADJUSTING NUTS

PIVOT ARM

BUSHINGS

SPRING

WASHER

9S. Tension the blade to the belt. Rotate the blade until it contacts

the belt. While holding the spring bushing at on the torque arm, rotate the torque arm until the pivot arm is against the end of the slot nearest the pole. Tighten the locking bolts and jam nuts on the torque arm (Fig. 9). NOTE: e torque arm should be up against the mounting plate.

Fig. 9

Tighten locking bolts and jam nuts

Pivot arm against slot end nearest the pole

10S. Set the correct blade tension.

Refer to the chart on the pivot sha bracket for the spring length required for the belt width. Lightly pull the pivot arm toward the end of the torque arm slot nearest the pole and turn the adjusting nuts until the required spring length is achieved (Fig. 10).

Install the Tensioning System. For the QMT Spring Tensioner go to step 7S. For the PAT Tensioner proceed to step 7P.

QMT Spring Tensioner

Section 4 - Installation Instructions - MMP Precleaner (cont.)

Spring Length Chart

Blade

Width

Purple

Springs

White

Springs

Gold

Springs

Silver

Springs

mm in. mm in. mm in. mm in. mm in.

450 18" 117 4 5/8" 152 6" 159 6 1/4" 6 1/2"

600 24" 102 4" 149 5 7/8" 159 6 1/4" 162 6 3/8"

750 30" N/A N/A 143 5 5/8" 156 6 1/8" 162 6 3/8"

900 36" N/A N/A 140 5 1/2" 152 6" 159 6 1/4"

1050 42" N/A N/A 133 5 1/4" 149 5 7/8" 159 6 1/4"

1200 48" N/A N/A 130 5 1/8" 146 5 3/4" 155 6 1/8"

1350 54" N/A N/A 124 4 7/8" 143 5 5/8" 155 6 1/8"

1500 60" N/A N/A 121 4 3/4" 143 5 5/8" 155 6 1/8"

1650 66" N/A N/A N/A N/A 140 5 1/2" 152 6"

1800 72" N/A N/A N/A N/A 137 5 3/8" 152 6"

1950 78" N/A N/A N/A N/A 133 5 1/4" 149 5 7/8"

2100 84" N/A N/A N/A N/A 130 5 1/8" 149 5 7/8"

2150 90" N/A N/A N/A N/A N/A N/A 146 5 3/4"

2400 96" N/A N/A N/A N/A N/A N/A 143 5 5/8"

2550 102" N/A N/A N/A N/A N/A N/A 140 5 1/2"

2700 108" N/A N/A N/A N/A N/A N/A 140 5 1/2"

2850 114" N/A N/A N/A N/A N/A N/A 137 5 3/8"

Shading indicates preferred spring option.

Fig. 10

Top of

washer

to top of

torque arm

ADJUSTING NUTS

Page 13

Fig. 8P

NOTE: PAT Tensioners are shipped with the air bags and torque arms

attached to the mounting bases.

7P. Tension the blades to the belt. Collapse both air bags (with

C-clamps) and rotate the blades until they are 25mm (1") short of contact with the belt. Tighten the torque arm locking bolts and jam nuts (Fig. 7P).

8P. Connect the supply lines and set

tension pressure. With the parts

supplied, attach a line to each air bag and run the lines to the outlet side of the control box (Fig. 8P). NOTE: Be sure lines are safely away from the belt. Connect a line from the inlet side of the box to the site’s supply, or air tank. Test the connections for leaks and set the pressure per the chart on the control box (also shown to right).

9P. Test run the cleaner. Run the conveyor for at least 15 minutes and

inspect cleaning performance. Make adjustments as necessary.

Portable Air Tensioner (PAT)

Connect line from site supply or tank

Connect lines from air bags

PAT Control Box

Section 4 - Installation Instructions - MMP Precleaner (cont.)

Fig. 7P

Torque arm locking bolts and jam nuts

Collapse air bags

Pressure Chart

Blade

Width

MPa PSI*mm. in.

450 18" .034 5#

600 24" .041 6#

800 32" .055 8#

900 36" .062 9#

1050 42" .076 11#

1200 48" .090 13#

1350 54" .097 14#

1500 60" .110 16#

1650 66" .117 17#

1800 72" .131 19#

1950 78" .145 21#

2100 84" .152 22#

2250 90" .165 24#

2400 96" .172 25#

2550 102" .186 27#

2700 108" .193 28#

2850 114" .207 30#

* PSI setting is based on the

belt width.

Page 14

14 MMP Precleaner

Section 5 - Pre-Operation Checklist and Testing

• Run the conveyor for at least 15 minutes and inspect the cleaning performance

• Check the tensioner spring for recommended length (proper tensioning)

• Make adjustments as necessary

• Recheck that all fasteners are tightened properly

• Add pole caps

• Apply all supplied labels to the cleaner

• Check the blade location on the belt

• Be sure that all installation materials and tools have been removed from the belt and the conveyor area

NOTE: Observing the cleaner when it is running and performing properly will help to detect problems or when adjustments are needed later.

5.1 Pre-Op Checklist

5.2 Test Run the Conveyor

Page 15

Section 6 - Maintenance

Flexco® belt cleaners are designed to operate with minimum maintenance. However, to maintain superior performance some service is required. When the cleaner is installed a regular maintenance program should be set up. is program will ensure that the cleaner operates at optimal eciency and problems can be identied and xed before the cleaner stops working.

All safety procedures for inspection of equipment (stationary or operating) must be observed. e MMP Precleaner operates at the discharge end of the conveyor and is in direct contact with the moving belt. Only visual observations can be made while the belt is running. Service tasks can be done only with the conveyor stopped and by observing the correct lockout/tagout procedures.

6.1 New Installation Inspection

Aer the new cleaner has run for a few days a visual inspection should be made to ensure the cleaner is performing properly. Make adjustments as needed.

6.2 Routine Visual Inspection (every 2-4 weeks)

A visual inspection of the cleaner and belt can determine:

• If the spring length is the correct length for optimal tensioning

• If the belt looks clean or if there are areas that are dirty

• If the blade is worn out and needs to be replaced

• If there is damage to the blade or other cleaner components

• If fugitive material is built up on the cleaner or in the transfer area

• If there is cover damage to the belt

• If there is vibration or bouncing of the cleaner on the belt

• If a snub pulley is used, a check should be made for material buildup on the pulley

If any of the above conditions exist, a determination should be made on when the conveyor can be stopped for cleaner maintenance.

6.3 Routine Physical Inspection (every 6-8 weeks)

When the conveyor is not in operation and properly locked and tagged out a physical inspection of the cleaner to perform the following tasks:

• Clean material buildup o of the cleaner blade and pole

• Closely inspect the blade for wear and any damage. Replace if needed.

• Check both blade pins and retaining clips for proper installation and condition. Replace if needed.

• Ensure full blade to belt contact

• Inspect the cleaner pole for damage

• Inspect all fasteners for tightness and wear. Tighten or replace as needed.

• Replace any worn or damaged components

• Check the tension of the cleaner blade to the belt. Adjust the tension if necessary using the chart on the cleaner or the one on Page 12.

• When maintenance tasks are completed, test run the conveyor to ensure the cleaner is performing properly

Page 16

16 MMP Precleaner

1. Remove the tension. Loosen the adjusting nuts on both sides

and turn them out until they are ush with ends of the pivot arms (Fig. 1) or release pressure from air control box. is releases the tension of the blade on the belt.

2. Remove the worn blade. Remove one blade pin and remove the

blade from the pole (Fig. 2). Clean all fugitive material from the pole.

NOTE: If blade is hard to remove use a screwdriver or hammer

to loosen it and then remove.

PHYSICALLY LOCK OUT AND TAG THE CONVEYOR AT THE POWER

SOURCE BEFORE YOU BEGIN CLEANER MAINTENANCE.

Fig. 1

Fig. 2

ADJUSTING NUTS

PIVOT ARM

BLADE PIN

6.4 Blade Replacement Instructions

Tools Needed:

- Tape measure

- (2) 38mm (1½")wrenches or crescent wrenches

- Wire brush (for cleaning pole)

- Small putty knife (for cleaning pole)

Section 6 - Maintenance (cont.)

TuffShear™ Replacement Blade

MMP Precleaner

TuffShear™ BLADE

BLADE PIN

Page 17

3. Install the new blade. Slide the new blade onto the pole,

locking it into the far blade pin, then reinstall the removed blade pin, washer and clip (Fig. 3).

4. Reset the correct blade tension. Refer to the chart for the

spring length/PSI required for the belt width. For QMT lightly pull the pivot arm toward the end of the torque arm slot nearest the pole and turn the adjusting nuts until the required spring length is achieved (Fig. 4).

NOTE: e chart is also on the cleaner’s pivot sha bracket for future reference for retensioning maintenance.

Fig. 3

Test run the cleaner. Run the conveyor for at least 15 minutes and inspect the cleaning performance. Check the

spring length for proper tensioning. Make adjustments as necessary.

Slide blade into far side blade pin

Section 6 - Maintenance (cont.)

Spring Length Chart

Blade

Width

Purple

Springs

White

Springs

Gold

Springs

Silver

Springs

mm in. mm in. mm in. mm in. mm in.

450 18" 117 4 5/8" 152 6" 159 6 1/4" 6 1/2"

600 24" 102 4" 149 5 7/8" 159 6 1/4" 162 6 3/8"

750 30" N/A N/A 143 5 5/8" 156 6 1/8" 162 6 3/8"

900 36" N/A N/A 140 5 1/2" 152 6" 159 6 1/4"

1050 42" N/A N/A 133 5 1/4" 149 5 7/8" 159 6 1/4"

1200 48" N/A N/A 130 5 1/8" 146 5 3/4" 155 6 1/8"

1350 54" N/A N/A 124 4 7/8" 143 5 5/8" 155 6 1/8"

1500 60" N/A N/A 121 4 3/4" 143 5 5/8" 155 6 1/8"

1650 66" N/A N/A N/A N/A 140 5 1/2" 152 6"

1800 72" N/A N/A N/A N/A 137 5 3/8" 152 6"

1950 78" N/A N/A N/A N/A 133 5 1/4" 149 5 7/8"

2100 84" N/A N/A N/A N/A 130 5 1/8" 149 5 7/8"

2150 90" N/A N/A N/A N/A N/A N/A 146 5 3/4"

2400 96" N/A N/A N/A N/A N/A N/A 143 5 5/8"

2550 102" N/A N/A N/A N/A N/A N/A 140 5 1/2"

2700 108" N/A N/A N/A N/A N/A N/A 140 5 1/2"

2850 114" N/A N/A N/A N/A N/A N/A 137 5 3/8"

Shading indicates preferred spring option.

Fig. 4

Top of

washer

to top of

torque arm

ADJUSTING NUTS

Pressure Chart

Blade

Width

MPa PSI*mm. in.

450 18" .034 5#

600 24" .041 6#

800 32" .055 8#

900 36" .062 9#

1050 42" .076 11#

1200 48" .090 13#

1350 54" .097 14#

1500 60" .110 16#

1650 66" .117 17#

1800 72" .131 19#

1950 78" .145 21#

2100 84" .152 22#

2250 90" .165 24#

2400 96" .172 25#

2550 102" .186 27#

2700 108" .193 28#

2850 114" .207 30#

* PSI setting is based on the

belt width.

Page 18

18 MMP Precleaner

6.5 Maintenance Log

Section 6 - Maintenance (cont.)

Conveyor Name/No. _________________________