Flexco MHCP Precleaner Installation, Operation And Maintenance Manual

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MHCP Precleaner

Installation, Operation

and Maintenance Manual

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MHCP 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.

This information will be helpful for any future inquiries or questions

about belt cleaner replacement parts, specifications or troubleshooting.

MHCP Precleaner

Table of Contents

Section 1 – Important Information ....................................................................................................................... 2

1.1 General Introduction ..........................................................................................................................................................2

1.2 User Benets .........................................................................................................................................................................2

1.3 Service Option ......................................................................................................................................................................2

Section 2 – Safety Considerations and Precautions .............................................................................................. 3

2.1 Stationary Conveyors .........................................................................................................................................................3

2.2 Operating Conveyors ..........................................................................................................................................................3

Section 3 – Pre-Installation Checks and Options .................................................................................................4

3.1 Checklist ................................................................................................................................................................................4

3.2 Cleaner Location Adjustments .........................................................................................................................................5

3.3 Optional Installation Accessories ....................................................................................................................................6

Section 4 – Installation Instructions ..................................................................................................................... 7

Section 5 – Pre-Operation Checklist and Testing ............................................................................................... 11

5.1 Pre-Op Checklist .............................................................................................................................................................. 11

5.2 Test Run the Conveyor .................................................................................................................................................... 11

Section 6 – Maintenance ......................................................................................................................................14

6.1 New Installation Inspection ........................................................................................................................................... 14

6.2 Routine Visual Inspection .............................................................................................................................................. 14

6.3 Routine Physical Inspection........................................................................................................................................... 14

6.4 Blade Replacement Instructions ................................................................................................................................... 15

6.5 Maintenance Log .............................................................................................................................................................. 17

6.6 Cleaner Maintenance Checklist .................................................................................................................................... 18

Section 7 – Troubleshooting ................................................................................................................................19

Section 8 – Specs and CAD Drawings ................................................................................................................. 20

8.1 Specications and Guidelines ........................................................................................................................................ 20

8.2 CAD Drawings ..................................................................................................................................................................21

Section 9 – Replacement Parts ............................................................................................................................23

9.1 Replacement Parts List .................................................................................................................................................... 23

9.2 Optional Assemblies, Tensioners & Kits ..................................................................................................................... 24

Section 10 – Other Flexco Conveyor Products ...................................................................................................25

Section 1 – Important Information

1.1 General Introduction

We at Flexco are very pleased that you have selected a MHCP Precleaner 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: 1-800-541-8028

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 MHCP 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 Representative.

4 MHCP Precleaner

Section 2 – Safety Considerations and Precautions

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

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

2.1 Stationary Conveyors

The 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

2.2 Operating Conveyors

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

• Inspection of the cleaning performance

• Dynamic troubleshooting

DANGER

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.

WARNING

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

WARNING

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

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.

Section 3 – Pre-Installation Checks and Options

3.1 Checklist

• 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

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

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

6 MHCP Precleaner

Section 3 – Pre-Installation Checks and Options

3.2 Cleaner Location Adjustments

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: 36"

X = 18"

Y = 14 3/8"

C = 23"

1. Determine the given location dimensions and define the change needed. After laying out the given X & Y dimensions, determine the distance of the modification required for adequate clearance of the pole and tensioning system. (In the example we decide to lower the pole 2" to clear the support structure).

36”

2. Write down known dimensions. We can now determine two of the three required dimension which will allow us to find 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 2", so we add 2" to the given “Y” dimension.

X = ?"

Y =14 3/8+2=16 3/8"

C = 23"

3. Determine final dimension. On a flat 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

Y (16 3/8")

tape measure starting at the modified “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 = 16 1/8"

Y = 16 3/8"

Fig. 3a

C (23")

mark

This distance is the new “X” dimension

Fig. 3b

(16 1/8")

C = 23"

Fig. 3c

Fig. 3d

Section 3 - Pre-Installation Checks and Options

3.3 Optional Installation Accessories

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.

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

Optional Mounting Kits (incl. 2 brackets/bars)

Description

Optional Mounting Bar Kit * MMBK 75830 19.5 Mounting Plate Kit (incl. 2 plates) MMPK 76537 140.0

*Hardware Included Lead time: 1 working day

Ordering

Number

Pole Extender Kit (incl. 2 pole extenders)

Description

Pole Extender Kit MAPEK 76024 21.9

Provides 30" (750mm) of extended pole length. Lead time: 1 working day

Ordering

Number

Item

Code

Wt.

Lbs.

Item

Code

Wt.

Lbs.

76537 Optional Mounting Plate Kit

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

• 16" x 32" (400 x 800mm) with (4) 5/8" holes

8 MHCP Precleaner

Section 4 – Installation Instructions

4.1 MHCP Precleaner

Supershear Blades

AWT Air/Water Tensioner or NT Nitrogen Tensioner

Blade Cartridge

Extender Pole

Center Pole

Maximum

lump size + 8"

(200mm)

Chute Wall

MHCP Parts List

PST Spring Tensioner

Physically lock out and tag the conveyor at the power source before you

begin cleaner installation.

CAUTION: Components may be heavy. Use safety-approved lifting procedures.

Tools Needed:

• Tape Measure

• Wrenches or Crescent Wrenches: (2) 3/4" (19mm), (2) 1-1/2" (38mm), (1) 15/16" (24mm), and (1) 5/8" (16mm)

• C-clamps for AWT only

Blades per Cleaner Size

24" 30" 36" 42" 48" 54" 60" 72" 84" 96"

3 4 5 6 7 8 9 11 13 15

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.)

Pulley Diameter

(incl. belt and

lagging)

Fig. 1

Recommended spacing from back chute wall

X & Y Chart for Pole Location

Pulley Diameter

(including belt

and lagging) X Y C

20" 10" 14-3/8" 17-1/2" 21" 10-1/2" 14-3/8" 17-3/4" 22" 11" 14-3/8" 18-1/8" 23" 11-1/2" 14-3/8" 18-3/8" 24" 12" 14-3/8" 18-3/4" 25" 12-1/2" 14-3/8" 19" 26" 13" 14-3/8" 19-3/8" 27" 13-1/2" 14-3/8" 19-3/4" 28" 14" 14-3/8" 20-1/8" 29" 14-1/2" 14-3/8" 20-3/8" 30" 15" 14-3/8" 20-3/4" 31" 15-1/2" 14-3/8" 21-1/8" 32" 16" 14-3/8" 21-1/2" 33" 16-1/2" 14-3/8" 21-7/8" 34" 17" 14-3/8" 22-1/4" 35" 17-1/2" 14-3/8" 22-5/8" 36" 18" 14-3/8" 23" 37" 18-1/2" 14-3/8" 23-3/8" 38" 19" 14-3/8" 23-7/8" 39" 19-1/2" 14-3/8" 24-1/4" 40" 20" 14-3/8" 24-5/8" 41" 20-1/2" 14-3/8" 25" 42" 21" 14-3/8" 25-1/2" 43" 21-1/2" 14-3/8" 25-7/8" 44" 22-1/4" 14-3/8" 26-1/2" 45" 22-7/8" 14-3/8" 27" 46" 23-1/2" 14-3/8" 27-1/2" 47" 24" 14-3/8" 28" 48" 24-5/8" 14-3/8" 28-1/2"

Section 4 – Installation Instructions

mark

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

Blade Cartridge

Chute wall (cut away)

Center Pole

Extender Pole

Must be facing away from head pulley

Locating bolt holes

Locking Bolts

Must align with extender pole holes

Must be facing down

mark

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

4. 1 MHCP Precleaner (cont.)

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

mark

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

Fig. 2

Fig. 3

Fig. 4

mark

Template for PST mounting base

Center large template hole notches on pole center mark,

Extender Pole

Locating bolt holes

rotate to desired angle and trace holes

Center Pole

Template for AWT/NT mounting base

Must be facing down

Chute wall (cut away)

Blade Cartridge

Must be facing away from head pulley

Must align with extender pole holes

Locking Bolts

Extender Pole

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 and make sure the locating bolt holes align with the center pole holes (holes are offset to the lower half). Position the center pole with the welded nuts and locking bolts on one side facing down and on the adjoining side facing away from the head pulley (Fig. 4). Leave the locking bolts loose.

Mounting Plate (Pst Shown)

5. Install the mounting bases. Bolt the mounting bases to the chute with the bolts provided (Fig. 5).

6" of pole end must extend outside the mounting base on each side

Align holes and install bolts, washers and nuts

Fig. 6

10 MHCP Precleaner

Fig. 5

Chute wall (cut away)

6. Install the blade cartridge. Place the blade cartridge onto the center pole. Adjust the extender poles until the holes align with the holes in the center pole and lock the cartridge into place with the two bolts, washers and nuts (Fig. 6). NOTE: Be sure at least 6"of the extender pole extends out of the mounting base on each side for tensioner installation. Adjust the extender poles in the center pole if more or less length is needed.

Section 4 – Installation Instructions

Torque Arm

Torque Pivot Rod

Pivot Rod Base

Torque Pivot Rod

Chute Wall (cut away)

Pivot Rod Mounting Bolt

Chute Wall (cut away)

Pivot Rod Mounting Bolt

Pivot Rod

Bushings

Torque Arm

Torque Pivot Rod

Chute Wall (cut away)

Pivot Rod Mounting Bolt

4.1 MHCP Precleaner (cont.)

7. Center the blades on the belt. Slide

Remove blade stop to slide blade(s) off if necessary

Fig. 7

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

Tighten locking bolts and jam nuts (both ends)

Fig. 8

8. Lock the extender poles in the center pole. Tighten the two locking bolts and jam nuts on each end of the center pole (Fig. 8).

the pole until the blades are centered or cover the belt’s material path (Fig.

7). NOTE: Standard blade coverage is belt width minus 6". If less blade coverage is required, single blades can be removed from the blade cartridge. The blades do not have to be centered in the cartridge. They should be centered on the belt’s material path.

Install the tensioning system. For the PST Spring Tensioner go to step 9S. For the PAT Tensioner proceed to step 9P.

Precleaner Spring Tensioner (PST)

9S. Install the torque pivot rod. Remove the

adjusting nuts and springs from the rods. The pivot rod base can be installed in any of the four mounting plate holes. Determine the rotation

Pivot Rod Base

Torque Pivot

Torque Pivot Rod

Rod

Chute

Wall (cut

Wall

away)

(cut away)

Torque Pivot Rod

Torque Arm

desired. Insert the pivot rod mounting bolt through the chute wall and the mounting plate and into the pivot rod base and tighten (Fig. 9S).

10S. Slide the torque arm onto the pole end. Again ensuring the correct

pulling rotation, put the torque arm onto the pole end and rotate it around until the torque pivot rod slides through the slot (Fig. 10S).

11S. Reassemble the spring assembly. Slide the spring, washer and

bushings onto the pivot rod and turn the two adjusting nuts so about

Fig. 9S

Pivot Rod

Mounting Bolt

Adjusting Nuts

Washer

Fig. 10S

Pivot Rod

Bushings

1/4" of the rod is exposed above the nuts (Fig. 11S). Complete steps 9S through 11S on the other side.

Tighten locking bolts and jam nuts

Fig. 11S

12S. Tension the blades to the belt. Rotate the blades until they contact the belt. While

holding the spring bushing flat on the torque arm, rotate the torque arm until the pivot rod is against the end of the slot nearest the pole. Tighten the locking bolts and jam nuts on the torque arm (Fig. 12S). NOTE: The torque arm should be up against the mounting base.

Fig. 12S

Pivot rod against slot end nearest the pole

Section 4 – Installation Instructions

4.1 MHCP Precleaner (cont.)

Spring Length Chart

Blade

Width

Spring tension is based on the number of blades on the cleaner, not the belt width. Shading indicates preferred spring option.

No. Of Blades

18" 3 5 3/4" 6 3/8" 6 1/2"

24" 4 5 3/8" 6 1/4" 6 3/8"

30" 5 5 1/8" 6 1/8" 6 3/8"

36" 6 4 3/4" 6 1/8" 6 1/4"

42" 7 4 1/2" 6" 6 1/4"

48" 8 N/A 5 7/8" 6 1/8"

54" 9 N/A 5 3/4" 6 1/8"

60" 10 N/A 5 3/4" 6"

66" 11 N/A 5 5/8" 6"

72" 12 N/A 5 1/2" 5 7/8"

78" 13 N/A 5 1/8” 5 3/4"

84" 14 N/A N/A 5 3/4"

90" 15 N/A N/A 5 5/8"

96" 16 N/A N/A 5 1/2"

102" 17 N/A N/A 5 1/2"

White

Springs

Silver

Springs

Red

Springs

Measure

f Washer

from top

of washer

rque Arm

to top of

torque arm.

Fig. 13S

14S. Test run the cleaner. Run the conveyor for at least 15 minutes and inspect

cleaning performance. Check the spring lengths for proper tensioning. Make adjustments as necessary.

13S. Set the correct blade tension. Refer to the chart or

the decal on the mounting base for the spring length required for the belt width. Lightly pull the pivot rod toward the end of the torque arm slot nearest the pole and turn the adjusting nuts until the required spring length is achieved (Fig.13S). Complete steps 12S and 13S on the other side. For best results, recheck the spring length on the first side to insure there has been no movement.

Portable Air Tensioner (PAT)

Locking bolts and jam nuts

Collapse air bags

Fig. 9P

Connect line from site supply or tank

Connect lines from air bags

Fig. 10P

PAT Control Box

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

mounting bases.

9P. Tension the blades to the belt. Collapse both air bags (with C-clamps) and rotate the

blades until they are 1" short of contact with the belt. Tighten the torque arm locking bolts and jam nuts (Fig. 9P).

10P. 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 PAT control box (Fig. 10P). 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 below). Take the pressure chart label from the instruction packet and affix it in an easily accessible location near the regulator for future reference.

Pressure Chart

Blade

Width

PSI setting is based on the number of blades on the cleaner, not the belt width.

No. of

Blades PSI

18" 3 8#

24" 4 10#

30" 5 13#

36" 6 15#

42" 7 18#

48" 8 20#

54" 9 23#

60" 10 25#

66" 11 28#

72" 12 31#

78" 13 33#

84" 14 36#

90" 15 38#

11P. Test run the cleaner. Run the conveyor for at least 15 minutes and inspect cleaning

12 MHCP Precleaner

performance. Make adjustments as necessary.

Section 5 – Pre-Operation Checklist and Testing

5.1 Pre-Op Checklist

• 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

5.2 Test Run the Conveyor

• 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

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

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. This program will ensure that the cleaner operates at optimal efficiency and problems can be identified and fixed before the cleaner stops working.

All safety procedures for inspection of equipment (stationary or operating) must be observed. The MHCP 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

After 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 off of the cleaner blade and pole.

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

• Check both cartridges 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 10.

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

14 MHCP Precleaner

Section 6 – Maintenance

Pivot Rod

Bushings

Torque Arm

Torque Pivot Rod

Pivot Rod Base

Torque Pivot Rod

Chute Wall (cut away)

Pivot Rod Mounting Bolt

6.4 Blade Replacement Instructions

MHCP Parts List

Physically lock out and tag the conveyor at the power source before you

Tools Needed:

• Tape measure

• (2) 3/4"(19mm) wrench or crescent wrench

• 11/16" (17mm) wrench or crescent wrench

• (1) 9/16"(14mm) wrench or crescent wrench

• Wire brush (for cleaning pole)

• Small putty knife (for cleaning pole)

begin cleaner installation.

SuperShear™ Replacement Blade

and Cartridge

Tighten locking bolts and jam nuts

Fig. 1

Pivot rod against slot end nearest the pole

1. Remove the tension. Loosen the adjusting nuts on both sides and turn them out until they are flush with ends of the pivot arm (Fig. 1) or release pressure from PAT control unit. This releases the tension of the blade on the belt.

2. Remove the worn blade cartridge. Remove two bolts on each end of cartridge and remove the cartridge from the pole (Fig. 2). Clean all fugitive material from the pole.

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

it and then remove.

6" of pole end must extend outside the mounting base on each side

Fig. 2

Blade Cartridge

Align holes and install bolts, washers and nuts

Section 6 – Maintenance

6.4 Blade Replacement Instructions (cont.)

3. Change blades on cartridge. Be sure to install all new blades to ensure even cleaning. To remove blades, unlock blade stop, remove handle and loosen cartridge expansion bolts. Clean cartridge before installing new blades. Install new blades then tighten cartridge expansion bolts and reinstall blade stop handle (Fig. 3).

4. Install the new cartridge. Slide the new cartridge onto the pole. Align holes on pole and cartridge then install bolts, washers and nuts to lock in cartridge (Fig. 4).

5. Reset the correct blade tension. Refer to the chart for the spring length/ PSI required for the belt width. For PST 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. 5). Tighten jam nut. NOTE: The chart is also on the cleaner’s pivot shaft bracket for future reference for retensioning maintenance.

Fig. 3

Blade Stop

Handle

Fig. 4

6" of pole end must extend outside the mounting base on each side

Cartridge

Expansion Bolts

Blade Cartridge

Align holes and install bolts, washers and nuts

Spring Length Chart

Blade

Width

Spring tension is based on the number of blades on the cleaner, not the belt width. Shading indicates preferred spring option.

No. Of Blades

18" 3 5 3/4" 6 3/8" 6 1/2"

24" 4 5 3/8" 6 1/4" 6 3/8"

30" 5 5 1/8" 6 1/8" 6 3/8"

36" 6 4 3/4" 6 1/8" 6 1/4"

42" 7 4 1/2" 6" 6 1/4"

48" 8 N/A 5 7/8" 6 1/8"

54" 9 N/A 5 3/4" 6 1/8"

60" 10 N/A 5 3/4" 6"

66" 11 N/A 5 5/8" 6"

72" 12 N/A 5 1/2" 5 7/8"

78" 13 N/A 5 1/8” 5 3/4"

84" 14 N/A N/A 5 3/4"

90" 15 N/A N/A 5 5/8"

96" 16 N/A N/A 5 1/2"

102" 17 N/A N/A 5 1/2"

White

Springs

Silver

Springs

Red

Springs

Measure

f Washer

from top

of washer

rque Arm

to top of

torque arm.

Fig. 5

Pressure Chart

Blade

Width

PSI setting is based on the number of blades on the cleaner, not the belt width.

No. of

Blades PSI

18" 3 8#

24" 4 10#

30" 5 13#

36" 6 15#

42" 7 18#

48" 8 20#

54" 9 23#

60" 10 25#

66" 11 28#

72" 12 31#

78" 13 33#

84" 14 36#

90" 15 38#

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.

16 MHCP Precleaner