maintenance manual · 2018. 9. 10. · brelko design and manufacture conveyor belt cleaning...

P.O. Box 62392 Marshalltown 2107 Tel: +27 11 013 4000 Fax: +27 11 013 4150 E-Mail: [email protected] Web: www.brelko.com

BRELKOCONVEYOR PRODUCTS ®

Product, Installation and Maintenance Manual

Primary & Secondary Scrapers and Belt Ploughs.

OFC is a division of Transmeca s.a. | rue du Rouvroir 11 | 7610 Rumes | Belgium | www.ofc-eu.com | [email protected]



Version 8.0 – © 03/2018Primary, Secondary and Ploughs - Product, Installation and Maintenance Manual - Page 1 of 35 All technical and dimensional information subject to change. All general Terms and Conditions of sale, including limitations of our liability, apply to all products and services sold.

Table of Contents1. Table of Contents �� 1

1.1. Table of Contents Continued �� 2

2. Company Profile �� 3

3. Disclaimer �� 4

3.1. Safety Note �� 4

3.2. The following symbols may be used in this manual: �� 4

4. General Information �� 4

5. Handling �� 4

5.1. Receiving the goods �� 4

5.2. Work Safety �� 4

5.3. Handling �� 5

5.4. Storage �� 5

5.5. Preparations for installing Belt Scrapers and Ploughs �� 5

6. Recommended Tools List �� 5

7. Primary Head Pulley Belt Scrapers �� 8

7.1. Secondary Belt Scrapers �� 9

7.2. Belt Ploughs �� 10

8. Scrapers & Ploughs Belt Width Range �� 11

8.1. Primary Scrapers �� 11

8.2. Secondary Scrapers �� 11

8.3. Ploughs �� 11

8.4. Scrapers & Ploughs Blade Selection Guide �� 11

8.5. Belt Scraper & Belt Ploughs Mounting Selection Guide �� 12

9. Primary Belt Scrapers - Features and Options �� 13

9.1. Primary Belt Scrapers - Parts Ordering List and Assembly Instructions �� 14

9.2. Primary Belt Scrapers - Dimension Table and Installation Guide �� 15

9.3. Primary Belt Scrapers - Parts reference Drawing �� 16

10. Secondary Belt Scrapers - Features and Options �� 17

10.1. Secondary Belt Scrapers - Parts Ordering List �� 18

10.2. Assembly Instructions And Reference Dimension Tables �� 19

10.3. Secondary Scrapers Installation Guide �� 20

10.4. Secondary Belt Scrapers - Parts Reference Drawing �� 21

10.5. Secondary Belt Scrapers - Parts Reference Drawing Cont... �� 22





11. Belt Ploughs - Features and Options �� 23

11.1. Ploughs - Parts Ordering List �� 24

11.2. Ploughs - Assembly Instructions �� 25

11.3. Ploughs - Installation Guide �� 26

11.4. Ploughs - Parts Reference Drawings �� 27

11.5. Ploughs - Parts Reference Drawings Continued �� 28

11.6. Maintenance For Scrapers �� 29

11.7. Routine Visual Inspection (every 2~4 weeks) �� 29

12. Procedure for Replacing/Repairing Primary and Secondary Belt Scrapers �� 30

13. Trouble Shooting Primary and Secondary Belt Scrapers �� 31

14. Procedure for Replacing/Repairing Belt Ploughs �� 32

14.1. Standard Mount �� 32

14.2. Heavy Duty Mount �� 32

15. Trouble Shooting Belt Plough Installation �� 33

16. Notes: �� 34

17. Contact Details: �� 35





BRELKO CONVEYOR PRODUCTSManaging Director:Kenny PadayacheeTel: +27 11 013 4000email: [email protected]

General Manager:Jay PillayTel: +27 82 557 5998email: [email protected]

Sales & Marketing Manager: Sharon PadayacheeTel: +27 11 013 4000email: [email protected]

Area Manager - Africa & USA:Brent WellerTel: +27 82 598 4115email: [email protected]

Technical & CADD Manager: Riaan RyndersTel: +27 82 507 3839email: [email protected]

Service Manager:Craig AbbeyTel: +27 82 407 8581email: [email protected]

IT Manager:Grant RitsonTel: +27 82 337 8162email: [email protected]

Founded in 1987 / Selby, Johannesburg – South Africa.

Brelko design and manufacture conveyor belt cleaning equipment for a trouble-free flow of materials at transfer and load points. This is backed up by an installation and maintenance package including a 24 hour call out service.

We have over 30 years experience as a supplier and advisor on spillage control to the bulk materials handling industry and offer proactive and ongoing maintenance for preventative spillage control and optimum belt cleaning.

We supply and service our products throughout the world, with branches in the United Kingdom and the United States, our master distributors in Australia, Chile, Europe and Greece, and agents located in Africa and more than 40 countries.

We are accredited with ISO 9001:2015, ISO 14001:2015 and OHSAS 18001:2007 certification and are members of the South African Institute of Materials Handling and Conveyor Manufacturers Association Limited of South Africa.

The company is accredited Level 1 B-BBEE status.





3. Disclaimer

Brelko Conveyor Products (Pty) Ltd hereby disclaims any liability for: damage due to contamination of the material; user’s failure to inspect, maintain and take reasonable care of the equipment; injuries or damage resulting from use or application of this product contrary to instructions and specifications contained herein. Brelko’s liability shall be limited to repair or replacement of equipment shown to be defective.

3.1. Safety Note

Observe all safety rules given herein along with owner and Government standards and regulations. Know and understand lockout/tag-out procedures as defined by National Standards Institutes, National Standard for Personnel Protection - Lockout/Tag-out of Energy Sources - Minimum Safety Requirements and Occupational Health and Safety.

3.2. The following symbols may be used in this manual:

DANGER Danger: Immediate hazards that will result in severe personal injury or death.

WARNING Warning: Hazards or unsafe practices that could result in personal injury.

CAUTION Caution: Hazards or unsafe practices that could result in product or property damages.

Important: Important: Instructions that must be followed to ensure proper installation/operation of equipment.

Note: General statements to assist the reader.

4. General Information

Brelko belt scrapers and ploughs are designed to operate with minimum maintenance. However, to maintain superior performance some service is required. When the scraper is installed a regular maintenance program should be set up. This program will ensure that the scraper operates at optimal efficiency and problems can be identified and fixed before the scraper stops working. All safety procedures for inspection of equipment (stationary or operating) must be observed. Secondary Scrapers operate 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 when the conveyor is stopped and by observing the correct lockout/tag-out procedures.

5. Handling

5.1. Receiving the goods

Check that the shipment contains all the products specified in the delivery note. If the goods do not match the delivery note, if the goods show any transportation damage, list it on the freight bill. Describe the damage and the number of wrong or faulty goods, and contact your supplier immediately.

Do not use defective parts under any circumstances. Claims must be made within 8 days from the arrival of goods. The factory does not cover expenses caused by exchange of product when installation was not carried out according to factory instructions.

5.2. Work Safety

Always use protective gloves and clothing. Always use a lifeline and soft-sole footwear when work will be carried out on raised platforms. Before you move a scraper or plough, check that it is securely attached to the lifting equipment. Always observe local safety regulations.





WARNING

Before removing/installing equipment, lock out/tag out energy source to conveyor, and/or conveyor accessories.

Turn off and lock out/tag out energy source according to local standards.

If equipment will be installed in an enclosed area, test gas level or dust content before using a cutting torch or welding. Using a cutting torch or welding in an area with gas or dust may cause an explosion.

5.3. Handling

When scrapers are unloaded from the transportation vehicle onto customer’s platform, place them on boards spaced max 1m apart at a minimum of 5cm from the ground.

5.4. Storage

Scrapers can be stored unpacked or in transportation package. Scrapers must not be stored on top of one another, protect the scrapers by storing them in a cool dry area on a flat surface.

5.5. Preparations for installing Belt Scrapers and Ploughs

Before installation, check all measurements and any of the other geometric design

6. Recommended Tools List

Tools List

QTY DESCRIPTION IMAGE

2 EXTENSION CORD (20m MINIMUM)

1 PORT-A-PACK (OXY-ACETYLENE)

1 COMBINATION GAUGE (WITH SPIRIT LEVEL)

1 STRAIGHT EDGE (1M MINIMUM)





Tools List


1 90° SET SQUARE

1 5M TAPE MEASURE

2 ADJUSTABLE SPANNERS

1 PIPE WRENCH (3" MINIMUM)

1 SOCKET RATCHET SET (6mm - 30mm)

2 RINGSET SPANNERS - M13, 15, 16, 17, 18, 19, 24

1 STANLEY KNIFE

2 M46 SET SPANNERS

2 M65 SET SPANNERS

1 HARD FACE HAMMER – 4pd





Tools List


1 SOFT FACE HAMMER - 1KG

3M NYLON ROPE

2 "G" CLAMPS - 6" - 8"

1 JIMMY LEVER





PRIMARY HEAD PULLEY BELT SCRAPERSMODELS : E905, E915, E952, E955

MODEL E905 - PRIMARY BELT SCRAPERWITH TWIST TORSION MOUNT


MODEL E952- PRIMARY BELT SCRAPERWITH TWIST TORSION MOUNT






SECONDARY BELT SCRAPERSMODEL E105, E205, E252, E255, E705

MODEL E105 - SECONDARY BELT SCRAPERWITH TORSION MOUNTINGS

MODEL E205 - SECONDARY BELT SCRAPERWITH STANDARD MOUNTINGS

MODEL E252 - COMPOSITE HEAVY DUTY SECONDARY BELT SCRAPERWITH PARALLEL TORSION MOUNTINGS

MODEL E255 - HEAVY DUTY PREMIUM SECONDARY BELT SCRAPERWITH PARALLEL TORSION MOUNTINGS

MODEL E705 - COMPACT SECONDARY BELT SCRAPERWITH STANDARD MOUNTS





BELT PLOUGHSMODEL E405, E505, E505HD

MODEL E405 V PLOUGH MODEL E505 - ANGLE PLOUGHWITH STANDARD MOUNTS

MODEL E505 HD - ANGLE PLOUGHWITH HEAVY DUTY MOUNTS





8. Scrapers & Ploughs Belt Width Range

8.1. Primary Scrapers

PRODUCT MOUNT TYPEBELT WIDTH RANGE

400 450 500 600 750 900 1050 1200 1350 1500 1650 1800 2100 2400

MODEL E905 TWIST TORSION ● ● ● ● ● ● ● ● ● ● ● ● ● ●

MODEL E915 TWIST TORSION ● ● ● ● ● ● ● ● ●



8.2. Secondary Scrapers


400 450 500 600 750 900 1050 1200 1350 1500 1650 1800 2100 2400

MODEL E105 STANDARD ● ● ● ● ● ● ● ● ● ● ● ● ● ●

TORSION ● ● ● ● ● ● ● ● ● ● ● ● ● ●

MODEL E205 STANDARD ● ● ● ●

TORSION ● ● ● ●

MODEL E252 STANDARD ● ● ● ● ● ● ● ●

PARALLEL TORSION ● ● ● ● ● ● ● ●

MODEL E255 STANDARD ● ● ● ● ● ● ● ●

PARALLEL TORSION ● ● ● ● ● ● ● ●

MODEL E705 STANDARD ● ● ● ● ●

TORSION ● ● ● ● ●

8.3. Ploughs


400 450 500 600 750 900 1050 1200 1350 1500 1650 1800 2100 2400

MODEL E405 STANDARD ● ● ● ● ● ● ● ● ● ● ● ● ● ●

BLADE HEIGHT 100 150

MODEL E505 STANDARD ● ● ● ● ● ● ● ● ● ● ● ● ● ●


MODEL E505HD STANDARD ● ● ● ● ● ● ● ● ● ● ● ● ● ●


8.4. Scrapers & Ploughs Blade Selection Guide

1 PolyurethaneLow abrasion, high impact, low / medium speed. MODEL E105, E905, E915, E405, E505, E505HD

2F.R.A.S. (Polyurethane) (FIRE RETARDANT, ANTI STATIC)Low abrasion, high impact, low / medium speed.

MODEL E105, E905, E915, E405, E505, E505HD

3 Chrome Tool Steel Hardened (C10)Corrosive, low abrasion, high impact e.g. clip joints, chemicals, food etc. MODEL E205, E705

4 Tungsten Carbide (TC x 2mm thick)High abrasion e.g. stone, gravel, sand, ore, coal etc. MODEL E205, E705

5 Triplex Tungsten Carbide (T3 x 2mm thick)High abrasion, impact, corrosion e.g. slurry, coke, silica etc. MODEL E205, E255, E705, E952

6 Triplex Tungsten Carbide (T3 x 4mm thick)High abrasion, impact, corrosion / high speed steel cord belts. MODEL E255, E952

7 Boron Carbide (B4C x 4mm thick)High abrasion, low impact, primary & secondary belt scrapers / high speed. MODEL E952





Primary Scrapers

1Twist Torsion MountE905,E915, E952 and E955Near and Far Sides.

Secondary Scrapers

2

Standard Adjustable MountingsMost commonly used, low cost. Manual adjustment for blade wear and correct pressure against the belt. Scraper models:E105-S, E155-S, E205-S, E252-S, E255-S, and E705-S.

3

Torsion Arm MountingsAuto compensating for blade wear, varying belt thickness, ease passage of belt fasteners (clips, suitable for reversing belts, refer to installation guide).Single Arm Scraper models:E105-T, E205-T and E705-T.Parallel Arm Scraper models:E155-T, E252-T, E255-T.Note: T - TWIST TORSION MOUNTS

Belt Ploughs

4

Plough Mountings Auto compensating for blade wear, varying belt thickness, ease passage of belt fasteners.

E405 V-PLOUGH

E505 ANGLE PLOUGHAuto compensating for blade wear, varying belt thickness, ease passage of belt fasteners.

E505 ANGLE - PLOUGH Heavy DutyUniversal swivel mounting allows the plough to be set to scrape to either side of the belt.

“The above guidelines are not exhaustive or definitive; please contact us if in any doubt”

Note: Improper selection, installation & maintenance of scrapers could cause serious injuries, plant and equipment damage. Only use trained & qualified personnel for these functions.

8.5. Belt Scraper & Belt Ploughs Mounting Selection Guide





APPLICATIONSAPPLIES TO DESCRIPTION

E905, E915, E952,E955 As a Head Pulley Scraper, working directly on the head pulley.

E905, E915, E955 As a Head Pulley Scraper, when wet and sticky materials are conveyed.E905, E915, E955 Can be installed where there is not enough space for other scrapers.

E905, E915 Suitable for all types of conveyor belts and metal fastener systems.E952 Can be used on high speed and steel cord belts.E952 Low impact small particle size materials only.

E952, E955 Suitable for all types of conveyor belts with vulcanized joints.E952 Suitable for use in corrosive conditions.E952 Used in conjunction with Brelko Secondary Scrapers.

FEATURESAPPLIES TO DESCRIPTION

E905, E915, E955Adjustable Brelko torsion twist tensioners allow the scraper to maintain a constant pressure on the belt. They are self adjusting and allow the scraper to deflect away from any obstruction as a significant safety feature.

E905, E915, E952 Specially formulated polymeric blades give maximum life, and keep the possibility of damage to belt repairs, splices and metal fasteners to a minimum.

E905, E952, E955 Patented V-base blade mounting makes blade changing quick and simple.

E905,E915, E952, E955

Multi-blade construction allows individual blades to deflect for minor obstructions and adapt to belt profile.

E905, E915, E952, E955 Streamlined scraper construction prevents material build-up on the scraper.

E952 Ceramic or Tungsten blade holders with Boron Carbide (BC) and Tungsten Carbide (T3) inserts for long life.

E952 Compact torsion twist tensioners for easy adjustment.E952 Low friction and heat generation.E952 Robust construction for longer life.

E955 Pre-tensioned blades restrict forward movement and reduces belt contact pressure for optimised cleaning, and extends belt life.

PRIMARY BELT SCRAPERS - FEATURES AND OPTIONSMODELS : E905, E915, E952, E955





PRIMARY BELT SCRAPERS - PARTS ORDERING LISTNOTE! Always quote belt width.

ITEMNo. DESCRIPTION

APPLIES TO PRODUCT SIZE

SHAFT LENGTH

(mm)

BELT WIDTH(mm) PART No.

A. Carrier Assembly including shaft, “V” track and end stops.Note: E915 Not Supplied with V-TRACK

E905E915E955

Size 1 1200 400-500 2-8.1.1Size 2 1500 600-750 2-8.1.2Size 3 2000 900-1200 2-8.1.3Size 4 2500 1350-1500 2-8.1.5Size 4 3000 1650-2100 2-8.1.7Size 5 3500 2400 2-8.1.8

B. Torsion twist Tensioner and mount assembly including bearing, bushes, mounting brackets and tensioner units

(Belt Widths 1500 to 2400 require 2 Twist Tensioner Units)

ALL Size 2 N/A 400-750 2-2.3-1

Size 3 N/A 900-1200 2-2.3-2

Size 4 N/A 1350-2400 2-2.3-3

C. Blades - Standard Polyurethane E905 120mm N/A N/A 2-7.8E905 150mm N/A N/A 2-7.81 E915 250mm N/A N/A 2-7.82

Composite Poly Blade c/w Steel Holder and T3 TipCeramic Holder and BC Tip

E952E952

150mm150mm

N/AN/A

N/AN/A

2-6.522-6.53

D. Optional / 3-Piece Shaft Assembly including inner carrier shaft, outer carrier shafts and off-set plates.

E905, E955 Size 1 1200 400-500 2-8.1.1-3P-(BW)E905, E952, E955

Size 2 1500 600-750 2-8.1.2-3P-(BW)

E905, E915, E952, E955

Size 3 2000 900-1200 2-8.1.3-3P-(BW)

E905, E915, E952, E955

Size 4 2500 1350-1500 2-8.1.4-3P-(BW)

E905, E915, E952, E955

Size 4 3000 1650-1800 2-8.1.4-3P-(BW)

E905, E915, E952, E955

Size 5 4000 2100 - 2400 2-8.1.5-3P-(BW)

E. Torsion Holder E955 150mm N/A N/A 2-5.3

PRIMARY BELT SCRAPERS - ASSEMBLY INSTRUCTIONS

1. All scrapers will be wrapped and clearly marked with the model number, scraper blade grade and belt width.• Note: - Scrapers will be supplied with all nuts and bolts to complete the assembly and installation.

2. Referring to the parts list check that the correct parts and quantities have been supplied for the model and belt width of the scraper ordered.

3. Normally scrapers are supplied with blades (3) and end stops (5) assembled and fixed to the carrier shaft. If this is not the case, assemble as shown using lithium base grease as a lubricant to ease future removal of blades. If necessary, use rubber mallet to tap the blades into the “V” track.

4. Check that the blades (3) are free to deflect forwards and backwards. If any blades foul those adjacent, slightly slacken the end stop (5) set screws, and tap the torsion holders (4) sideways until the blades (3) clear each other. Tighten end stop (5) set screws.• Note: - There should be 0,5mm gap between blades (3)





1. Proceed with installation as per installation guide.• Note : Care should be taken when handling the ceramic components.

DIMENSIONS TABLE (mm)

Belt Width 400 450 500 600 750 900 1050 1200 1350 1500 1650 1800 2100 2400No. BLADES 3 3 4 4 6 5 6 7 8 9 10 11 13 14SIZE RANGE 1 3 3 4 5

A 53 61 61 61 61B 112 140 140 145 145C 168 210 210 215 215D 150 150 150 200 200E 215 280 280 295 295F 110 115 115 155 155G 190 190 190 250 250H 280 350 350 360 360J 100 100 100 150 150K 300 310 310 310 310L 240 250 250 250 250M 60 60 60 60 60N 35 35 35 35 35P 5 10 10 10 10Z 1200 1500 1200 2500 3000 4000 (3 PIECE)X 360 360 480 480 720 750 900 1050 1200 1350 1500 1650 1950 2100

PRIMARY BELT SCRAPERS - INSTALLATION GUIDE1. Refer to the Assembly Instructions, Parts List and Parts list drawing to confirm that all the necessary parts have been supplied and that

the scraper is correctly assembled.2. Remove mounting brackets (7) from nearside bearing assembly (9) and farside bearing assembly (8).3. Referring to the installation data sheet and dimensions given in the dimension table determine the scraper work zone and select the

optimum position for the scraper.4. After establishing the optimum position for the scraper on the head pulley, mark and cut out the near and farside chute openings. The

farside opening need only accommodate scraper adjustment. • Note 1: - Shield the conveyor belt and head pulley to prevent burning during cutting and welding activities.• Note 2: - The mounting brackets (7) may be omitted and the bearing plates bolted directly to the chute sides. Separate chute access

doors may then be required for inspection and maintenance access. Please consult a Brelko representative for this installation option.5. With reference to the installation data sheet select the most convenient location for the mounting brackets (7).

• Note: - Mounting brackets (7) can be welded or bolted to the chute sides.6. Tack weld the near and farside mounting brackets (7) to the chute sides or bolt to structure.7. Remove one or both carrier shaft (1) end caps and install scraper through nearside chute opening.8. Position carrier (1) centrally with reference to belt edges and head pulley and attach the nearside bearing assembly (9) and farside bearing

assembly (8) to the mounting brackets (7).9. Using nearside bearing assembly (9) and farside bearing assembly (8) as reference determine exact carrier (1) length, mark off; remove

carrier (1) and nearside bearing assembly (9) and farside bearing assembly (8).10. Carefully cut carrier shaft (1) to required length and de-burr shaft ends, reposition carrier shaft (1) centrally with reference to belt edges

and head pulley.11. Fit farside bearing bush (8a) over carrier shaft (1) end, and insert carrier shaft (1) end into farside bearing assembly (8). Tighten bolts and

nuts, finger tight only as further adjustment of the scraper will be required.12. Fit nearside bearing bush (9a) over carrier shaft (1) end, and locate nearside bearing assembly (9) as shown. Tighten bolts and nuts, finger

tight only as further adjustment of the scraper will be required.13. Complete welding of near and farside mounting brackets (7) or ensure all mounting brackets (7) nuts and bolts are firmly fastened.14. Locate tension unit (6) and insert holding bolt into matching holes between the nearside bearing assembly (9). Tighten holding bolt and

nut, finger tight only as further adjustment of the scraper will be required.15. With reference to the dimension data sheet move scraper into the correct scraping position. Tighten bolts and nuts; do not over tighten

nuts and bolts as further adjustment of the scraper might be required.16. Using a shifting spanner, turn tension unit to bias scraper against head pulley and insert holding bolt. The tensioner only needs to be

rotated until the first set of holding bolt holes between nearside bearing assemblies (9) align. 17. Firmly tighten all nuts and bolts.18. Start the conveyor and check if all blades are in full contact with the belt surface. If further adjustment is required stop the conveyor

and adjust the scraper until the next set of holding bolt holes between nearside bearing assemblies (9) align or until optimum cleaning is achieved.





PRIMARY BELT SCRAPERS - PARTS REFERENCE DRAWING

10°

20°

799a6

B

150

160

250

330

150

209

150

208

CH

X

ZSEE BLADE OPTIONSC - POLYURETHANE BLADESH - NYLON BLADES

PRIMARY SCRAPER - SINGLE PIECE CARRIER

PRIMARY SCRAPER NYLONBLADE OPTIONS

POLYURETHANE GRADESSTANDARD - 95SH(A)FIRE RETARDANT - 95SH(A)

PRIMARY SCRAPER POLYURETHANEBLADE OPTIONS

35

7

8 / 9

1

6

330

MODEL E915 BLADE

MODEL E955 BLADE

MODEL E905 BLADEMODEL E952 BLADE





APPLICATIONSAPPLIES TO DESCRIPTIONE105 As a Primary Scraper, when wet and sticky materials are conveyed.

E105 May be mounted directly on the head pulley.

E105 Can be used individually or in tandem as the secondary scraper.

E105 Suitable for all types of conveyor belts and metal fastener systems.

E205 Universal choice for all normal cleaning applications.

E205, E252, E255, E705 Not suitable for mounting directly onto the head pulley.

E205, E252, E255, E705

Use in conjunction with torsion arm mountings to accommodate different belt thicknesses on the same conveyor and excessive belt movement due to pulley eccentricity, thereby ensuring constant pressure with the belt.

E205, E252, E255, E705

Selection of correct blade material gives optimum blade life under all operating conditions and conveyed materials.

E252 As a Heavy Duty Head Pulley Scraper.

E255 Universal choice for heavy duty cleaning applications. Specially suited for wider high speed belts.

E705 Specially designed for easy installation on all belts up to 750mm wide.

E705 Can be installed where there is not enough space for other scrapers.

FEATURESAPPLIES TO DESCRIPTIONALL Patented V-Base blade mounting makes blade changing quick and simple.

E105 Specially formulated polyurethane blades give maximum life, and keep the possibility of damage to belt repairs, splices and metal fasteners to a minimum.

E105 Patented blade design ensures optimum combination of flexibility and stiffness to adapt to belt profile.

E252 Specially formulated composite blades give maximum life, and ensure accurate assembly and a clean running scraper.

E205, E255, E705 Pre-tensioned blades restrict forward movement and reduces belt contact pressure for optimized cleaning, and extends belt life.

E205, E255, E705 Fully sealed construction of torsion holder prevents material build-up or ingress into the spring unit.

E205, E255, E705Twin arm design of the torsion holder prevents radial and lateral blade oscillations and only allows longitudinal blade movement thus ensuring uniform and constant blade contact with the belt, irrespective of variations in belt thicknesses and surface conditions.

MOUNTING COMPONENTS

APPLIES TO DESCRIPTION

ALLAll metal components supplied standard as mild steel. NOTE: For corrosive environments components can be supplied galvanized or stainless steel on request.

ALL Brelko torsion mountings allow the scraper to maintain a constant pressure on the belt and greatly extend adjustment intervals. Also available is the standard adjustable mounting.

E205, E255, E705 Lightweight Nylon material used for the torsion holder ensures ease of handling, corrosion protection and minimum impact on belt surface after deflection.

E205, E255, E705 Patented blade torsion holder and blade design incorporating a deflector skirt ensures accurate assembly and a clean running scraper.

E205, E255, E705 Robust construction for longer life.

SECONDARY BELT SCRAPERS - FEATURES AND OPTIONS





SECONDARY BELT SCRAPERS - PARTS ORDERING LIST NOTE! Always quote belt width.

ITEMNo. DESCRIPTION


SHAFT LENGTH

(mm)


A. Carrier Assembly including shaft, “V” track and end stops.

ALL Size 1 1200 400-500 2-8.1.1Size 2 1500 600-750 2-8.1.2Size 3 2000 900-1200 2-8.1.3Size 4 2500 1350-1500 2-8.1.4Size 4 3000 1650-2100 2-8.1.4Size 5 3000 2400 2-8.1.5

C. Blades - Standard Polyurethane E105 120mm N/A N/A 2-7.8Blades - F.R.A.S.O.R. Polyurethane 120mm N/A N/A 2-7.8-FComposite Poly Blade c/w Triplex Tungsten blade (4mm) - T3

E252 150mm N/A N/A 2-7.83

D. Optional / 3-Piece Shaft Assembly including inner carrier shaft, outer carrier shafts and off-set plates.

ALL Size 1 1200 400-500 2-8.1.1-3P-(BW)Size 2 1500 600-750 2-8.1.2-3P-(BW)Size 3 2000 900-1200 2-8.1.3-3P-(BW)Size 4 2500 1350-1500 2-8.1.4-3P-(BW)Size 5 3000 1650-2400 2-8.1.5-3P-(BW)

E. Standard Mount Assembly - including clamp piece, nylon bushes, bolts, nuts and washers.Note: - Spindle to be ordered separately.

ALL Size 1&2 N/A 400-750 2-3.1 / 2-3.2Size 3 N/A 900-1200 2-3.3Size 4 N/A 1350-2400 2-3.4

F. Torsion Mount Assembly - including clamp piece, nylon bushes, bolts, nuts and washers.Note: - Spindle to be ordered separately.

ALL Size 1&2 N/A 400-750 2-2.1-1Size 3 N/A 900-1200 2-2.1-2Size 4 N/A 1350-2400 2-2.1-3

G. Spindle Assembly – including lock nuts. ALL Size 1 N/A 400-500 2-1.3Size 2&3 N/A 600-1200 2-1.3Size 4 N/A 1350-2400 2-1.4

H. Torsion Holder Assembly c/w :-Chrome Tool Steel blade C10 E205 120mm N/A N/A 2-5.63

Tungsten Carbide blade (2mm) TC E205 120mm N/A N/A 2-5.61

Triplex Tungsten blade (2mm) T3 E205 120mm N/A N/A 2-5.62



Chrome Tool Steel blade (5mm) C10 E705 100mm N/A N/A 2-5.68

Tungsten Carbide blade (2mm) TC E705 100mm N/A N/A 2-5.66






SECONDARY BELT SCRAPERS - ASSEMBLY INSTRUCTIONS 1. All scrapers will be wrapped and clearly marked with the model number, scraper blade grade and belt width.

• Note: - Scrapers will be supplied with all nuts and bolts to complete the assembly and installation.2. Referring to the parts list and installation data sheet check that the correct parts and quantities have been supplied for the model and

belt width of scraper ordered.3. Normally scrapers are supplied with blades (3) and end stops (5) assembled on the carrier shaft (1). If not, assemble as shown using

a lithium base grease as a lubricant to ease future removal of blades. If necessary, use a rubber mallet to tap the blades into the “V” track. Do not over-tighten end stop (5) set screws.

4. Depending on the installation access (see Installation Guide paragraph -1) an optional three piece shaft may be required, then one or both of the carrier shaft end pieces may now be attached.• Note: - Three piece carrier shafts are not supplied as standard and must be ordered separately.

5. Check whether the optional offset plates (10) are to be used, and if so; ensure that they are correctly assembled. Ensure that all nuts and bolts are firmly fastened.• Note: - Offset plates (10) are not supplied as standard and must be ordered separately.

6. Proceed with the installation as per the installation guide.

DIMENSION TABLE - 1STANDARD MOUNT TORSION MOUNT

SIZE 1 SIZE 2 SIZE 3 SIZE 4 SIZE 5 SIZE 1 SIZE 2 SIZE 3 SIZE 4 SIZE 5

A

E105 188 188 199 207 207 188 188 199 207 207E205 179 190 179 190E252 210 217 217 210 217 217E255 196 203 203 196 203 203E705 147 147 147 147

B

E105 150 150 150 175 175 203 203 203 233 233E205 150 150 198 203E252 150 175 175 161 190 190E255 150 175 175 161 190 190E705 150 150 196 196

C 300 350 300 350D 12 16 12 16E M30 M42 M30 M42F 100 130 100 130G 150 200 150 200H 60 80 60 80J 38.1 76.2 38.1 76.2

DIMENSION TABLE - 2SIZE RANGE 1 2 3 4 5

BELT WIDTH 400 450 500 600 750 900 1050 1200 1350 1500 1650 1800 2100 2400

NO OF BLADES

E105 3 3 4 5 6 7 8 9 10 12 13 14 17 19

E205 6 7 8 9

E252 6 7 8 9 10 11 13

E255 6 7 8 9 10 11 13

E705 4 4 5 6 7

DIM - X

E105 360 360 480 600 720 840 960 1080 1200 1440 1560 1680 2040 2280

E205 720 840 960 1080

E252 900 1050 1200 1350 1500 1650 1950

E255 900 1050 1200 1350 1500 1650 1950

E705 400 400 500 600 700

DIM - Z 1200 1500 2000 2500 3000





SECONDARY BELT SCRAPERS - INSTALLATION GUIDE

1. Refer to the Assembly Instructions, Parts List and the Parts List Drawing to confirm that all the necessary parts have been supplied and that the scraper is correctly assembled. Depending on access space, it may be necessary to use an optional 3-piece carrier. Then one or both of the carrier shaft end pieces can be fitted once the scraper is in position.

2. Remove the mount clamp piece (11), and green nylon bushes (12) from standard mount (7) / torsion mounts (8).3. Check that the lock nuts move freely on the spindles.4. Remove the standard mount (7) / torsion mount (8) from the spindles (6).5. Referring to the dimensions given in the table, see the Installation drawing, select the optimum position for the scraper and mark the

location of the access apertures.6. With reference to the Installation drawing, select the most convenient location for the mounting spindles. There are four possible

positions but in all cases ensure that the spindles remains at 90° (± 10°) to the belt surface. If no suitable location can be found to attach the spindle foot to the conveyor structure, the 3 piece shafts may be used as shown in the Parts List Drawing.• Note: - Offset plates (10) and 3-piece shafts are not supplied as standard, and must be ordered separately.

7. Fix the spindles (6) firmly in position. Locate standard mount (7) / torsion mount (8) on spindles as shown.8. Check that carrier shaft end pieces and carrier shaft centrepiece are firmly bolted together (3-piece shaft only).9. Position carrier shaft underneath the conveyor belt centrally with reference to belt edges and head pulley.10. Position carrier shaft and attached clamp piece (11) and bushes (12) on standard mount (7) / torsion mount (8) as shown and fit bolts,

washers and nuts. Tighten finger tight. For torsion mounts (8) adjust set screws (13) until they just touch the torsion arm. Pre-tension the torsion mount and tighten set screws (13) four full turns.• Note: - It may be necessary to adjust the location of the mount on the spindles by means of spindles nuts so that the blades are

clear of the belt surface.11. Lay a straight edge on the top face of the carrier shaft end piece and rotate the assembled carrier shaft until the straight edge is

parallel to the belt surface.• Note: - This step must be done carefully to ensure that the angle of the blades to the belt is correct.

12. Tighten bolts and nuts. Do not over tighten!13. By means of spindle nuts adjust the scraper towards the belt surface until all the blades contact the belt surface.14. Again, adjust the scraper towards the belt.

a. For E105 or E252 one further full turn of the spindle nuts.b. For E205, E255 or E705 half a turn of the spindle nuts.

15. The blades should now rest on the belt surface.• Note: - For torsion mounts, check that the set screws (13) are not touching the torsion arm. If they are still in contact with the

arm continue to adjust the scraper towards the belt in increments of half a turn of the lock nuts until the set screw (13) just clears the torsion arm.

16. For torsion mounts only. Slacken the set screws (13) four full turns and tighten the lock nuts.17. Check that the complete scraper assembly can move freely up and down on the torsion mounts, and that all blades can move freely.18. Check that all nuts and bolts are firmly fastened.19. Check that the spindle lock nuts are firmly tightened.20. Start the conveyor and check if all blades are moving freely and scraping in full contact with the belt surface. If further adjustment is

required, stop the conveyor and adjust the scraper:a. For E105 or E252, one further turn of the spindle nuts towards the belt until all blades are scraping satisfactory.b. For E205, E255 or E705,half a turn of the spindle nuts towards the belt until all blades are scraping satisfactory.• Note: - Do not over adjust the scraper.

21. Check that the spindle lock nuts are firmly tightened.22. To ensure future adjustment of the spindle nuts wrap thread with protective cloth to protect the thread against corrosion, rust and

ingress of dust.23. It may be necessary to install stabilising rollers to keep the belt surface flat and stop belt bounce.





SECONDARY BELT SCRAPERS - PARTS REFERENCE DRAWING

SECONDARY SCRAPER - SINGLE PIECE CARRIER

A

MODEL E205 BLADE MODEL E255 BLADE

SECONDARY SCRAPER POLYURETHANEBLADE OPTIONS

MODEL E105 BLADE MODEL E252 BLADE

SECONDARY SCRAPER NYLONBLADE OPTIONS

STANDARDMOUNT

TORSIONMOUNT

DOUBLE ARMTORSION MOUNT

E F

6

1

12

11

7

8

1211

8 12 11

MODEL E705 BLADE

120 150120 150

100

122.

5

160.

4

156

180.

5

163.

3

POLYURETHANE GRADESSTANDARD - 95SH(A)FIRE RETARDANT - 95SH(A)

H

A

F

G

Ø20

B

C

D

E

J

H

X

Z

SEE BLADE OPTIONSC - POLYURETHANE BLADESH - NYLON BLADES

G

C

MOUNTING OPTIONS:MOUNT DIRECTLY ONTO CONVEYOR STRINGER or

CHUTE SIDE PLATE (SUPPORT CLEATS NOT SUPPLIED AS STANDARD)

7 8

13

3

5





PARTS REFERENCE DRAWING (continued...)

OPTIONAL 3 PIECE CARRIERD

10 OPTIONAL OFFSETPLATE

100mmMIN

SPINDLE POSITION "A"

100mmMIN

SPINDLE POSITION "B" SPINDLE POSITION "C"

SPINDLE POSITION "D"

100mmMIN

100mmMIN

NOTE:FOR INCLINED BELTS SPINDLE CAN BE MOUNTED IN POSITION A or C,

BUT MUST REMAIN AT 80° TO 100° BELT SURFACE.(MAX BELT DECLINE ANGLE 15°)





APPLICATIONSAPPLIES TO DESCRIPTION

E405 Designed to be installed in the trailing configuration on the inner surface return.

E505Alternative to the E405 where material can only be discharged on one side.For use on reversible belts.

E505HD For heavier duty applications..

FEATURESAPPLIES TO DESCRIPTION

ALL Unique track mounted scraping blade facilitates very easy and quick blade change.

ALL Specially formulated PU blades ensure maximum blade life and minimum belt wear.

ALL Can be mounted on the top, bottom or inside of the stringers.

E405 Unique hinged assembly results in compact packaging for easy transport and installation.

E405 Parallel tri-link mounting allows the plough to move freely thus maintaining constant contact with the belt

E405 Interlocking blades ensure no blade distortion at leading edge.

E505 For use on reversible belts

E505 Parallel dual-link mounting allows the plough to move freely thus maintaining constant contact with the belt.

E505 Unique bolted assembly results in compact packaging for easy transport and installation.

E505 Universal swivel mounting allows the plough to be set to scraper to either side of the belt.

MOUNTING COMPONENTS

APPLIES TO DESCRIPTION

ALLAll metal components supplied standard in mild steel. NOTE: For corrosive environments components can be supplied galvanized or stainless steel on request.

ALL Universal Mounting Options.

BELT PLOUGHS - FEATURES AND OPTIONS

MODEL E405, E505, E505HD





PLOUGHS - PARTS ORDERING LISTNOTE! Always quote belt width.

ITEMNo. DESCRIPTION



A. “V” Arm Assembly including Polyurethane blades E405 Size 1 400 - 0750 020-320-(Specify Belt Width)Size 2 900 - 1350 020-320-(Specify Belt Width)Size 3 1500 - 2100 020-320-(Specify Belt Width)

B. Front Cross Brace E405 Size 1 400 - 0750 020-320-0081-4(Please Specify Belt Width)

Size 2 900 - 1350 020-320-0085-8(Please Specify Belt Width)

Size 3 1500 - 2100 020-320-0089-0093(Please Specify Belt Width)

C. Rear Cross Brace E405 Size 1 400 - 0750 020-730-0020 - 0024(Please Specify Belt Width)

Size 2 900 - 1350 (020-730-0025 - 0028(Please Specify Belt Width)

Size 3 1500 - 2100 020-730-0029 - 0033(Please Specify Belt Width)

D. Centre Cross Brace E405 Size 3 1500 - 2400 020-730-0040 - 0044(Please Specify Belt Width)

E. Stringer Mount Bracket E405 Size 1, 2 & 3 400 - 2400 020-320-0110

F. Link Arm ALL Size 1, 2 & 3 400 - 2400 2-4.6

G. Safety Chain Assembly - 1mtr- E405 Size 1, 2 & 3 400 - 2400 2-4.7

H Side Blades (L & R) E405 100mm 400 - 0750 2-4-(Specify Belt Width)150mm 900 - 2100 2-4-(Specify Belt Width)

I Standard Carrier Assembly E505E505HD

Size 1Size 2Size 3

400 - 0750900 - 13501500 - 2100

020-740-(Please Specify Belt Width)020-740-(Please Specify Belt Width)020-740-(Please Specify Belt Width)

J Standard Stringer Mount Assembly, including Link Arms, Mounting Plates and Swivel Brackets.

E505 400 - 2400 020-320-0130

K Optional Heavy Duty Mount Assembly, including Spindles assembly, Spindle Bracket & Mounting Plates.

E505E505HD

Size 2&3 400 - 1050 020-140-0040

Size 4 1200 - 2400 020-140-0041

L Poly Blades E505E505HD

100mm 400 - 750 2-5-(Specify Belt Width)150mm 1200 - 2400 2-5-(Specify Belt Width)

M Optional Heavy Duty Deflector Plate E505HD 400 - 2400 020-740-002(Please Specify Belt Width)

N Optional Spindle Assembly including Lock Nuts. E505E505HD

Size 2&3 400 - 1050 2-1.3

Size 4 1200 - 2400 2-1.4





PLOUGH - ASSEMBLY INSTRUCTIONS - STANDARD ASSEMBLY1. Referring to the parts list check that the correct parts and quantities have been supplied for the model and belt width plough ordered.2. Normally ploughs are supplied with blades (6) assembled in the channel track (1). If not, slide the blade (6) into the slotted carrier (1) and lock in a

central position with set screws supplied.3. Fit the HDPE washer (2), along with the swivel mounts (3) to the the carrier shaft (1).4. Assemble the links (5) to the two side mounting frames (4).5. Decide on the side (L or R) the plough must scrape to and swivel the blade/carrier assembly accordingly.

6. Fit the mountings (4) and links (5) to the swivel mounts (3).

PLOUGH - ASSEMBLY INSTRUCTIONS - HEAVY DUTY ASSEMBLY1. Referring to the parts list check that the correct parts and quantities have been supplied for the model and belt width plough ordered.2. Normally ploughs are supplied with blade/s (6) assembled in the channel track (1). If not, slide the blade (6) into the slotted carrier (1) and lock in a

central position.3. Normally ploughs are supplied with the spindle brackets (8) and the heavy duty deflector plate (10) assembled on the carrier assembly (1). If not, fit

the spindle brackets (8) and heavy duty deflector plate (10) onto the carrier assembly (1), and firmly tighten all nuts and bolts.• Note: If welding the deflector plate (10) to the carrier assembly (1), remove the blade/s to avoid the polyurethane from melting.• Note: Shield the conveyor belt during welding and cutting activities.

4. Decide on the side (L or R) the plough must scrape to and swivel the blade/carrier assembly accordingly.• Note: Care should be taken to ensure that spindle brackets (8) point in the correct direction. With reference to drawing number E505-011-B

5. Fit the mounting plates (9) to the stringers and locate the spindles (11) into the spindle brackets (8).

DIMENSION TABLE (mm) - E405Belt Width 400 450 500 600 750 0900 1050 1200 1350 1500 1650 1800 2100 2400

STD MNT CNTR 634 686 736 838 990 1144 1296 1448 1600 1752 1904 2058 2362 2668SIZE RANGE 1 / 2 3

A 619 671 721 823 975 1129 1281 1433 1585 1737 1889 2043 2347 2653B 334 367 399 464 558 656 753 852 949 1043 1140 1239 1434 1662C 525 575 625 724 874 1024 1174 1325 1474 1624 1774 1925 2224 2575D

(BLADE HEIGHT) 100 150

DIMENSION TABLE (mm) - E505 Belt Width 400 450 500 600 750 0900 1050 1200 1350 1500 1650 1800 2100 2400SIZE RANGE 1 2 3

A 634 686 736 838 990 1144 1296 1448 1600 1752 1904 2058 2362 2668B 1084 1159 1248 1291 1421 1595 1823 1899 2086 2217 2348 2477 2880 2997C 418 492.2 582 624 755 926.5 1154.5 1230.5 1417.5 1548.5 1679.5 1808.5 2211 2328.5D 100 100 100 100 100 150 150 150 150 150 150 150 150 150

DIMENSION TABLE (mm) - E505 HEAVY DUTYBelt Width 400 450 500 600 750 0900 1050 1200 1350 1500 1650 1800 2100 2400SIZE RANGE 1 2 3

A 634 686 736 838 990 1144 1296 1448 1600 1752 1904 2058 2362 2668B 930 1003 1090 1140 1275 1446 1670 1752 1937 2071 2203 2334 2732 2859C 700 773 859.5 910 1045 1216 1439.5 1522 1707.5 1840.5 1973 2104 2502.5 2628.5





INSTALLATION GUIDE E405 / E505 / E505 HDThe plough is intended for removing loose material on the inside of the return side of the conveyor belt ahead of take-ups, drives and tail pulleys.

1. Refer to the assembly instructions and parts list to confirm that all the necessary parts have been supplied and that the plough is correctly assembled.• Note: The plough mountings can be reversed giving three possible mounting positions on the conveyor stringers, to suit different

return belt positions relative to the stringers.2. If the return belt is not parallel to the stringers the nose or tail of the plough can be lowered by adjusting the front cross brace (3c)

and stringer mounting brackets (6). (Up to 10° from parallel can be accommodated).• Note: It may be necessary to install flat return idlers.

3. Select the most suitable positions for the plough which should be with the connecting links near horizontal. Mark out and make the mounting holes - (to suit M12 bolts).

4. If mounting on the inside of the stringer is required the use of tapered washers may be required.5. Fix the front cross brace (3c) and stringer mounting brackets (6) firmly in position.6. Ensure that the plough is securely linked to its frame and that it is free to move up and down to follow the belt movement.7. Make an attachment point on the conveyor frame above and ahead of the plough. Attach the chain (7) to the conveyor frame and

allow only sufficient slack in the chain to accommodate wear of the plough blades, and to prevent the plough frame from touching the belt.

8. Check that the plough is central on the belt and free to move up and down and that all bolts, nuts, links and shackles are securely fastened.

9. Start the conveyor and check for even contact of the blades with the belt and that the plough is moving freely with the belt.10. The conveyor belt should be flat at the plough position.

• Note: If necessary, install flat return rollers ahead and behind the plough.11. The plough is intended for removing loose material on the inside of the return side of the conveyor belt ahead of take-ups, drives and

tail pulleys. Use instead of an E405 V-Plough when discharge can only be accepted to one side of the belt.12. Refer to the assembly instructions and parts list to confirm that all the necessary parts have been supplied and that the plough is

correctly assembled. • Note: - The plough can be altered to discharge to the left or right hand side of the belt.

13. The return belt at the plough position must be flat and supported ahead and behind the plough.• Note: - It may be necessary to install flat return idlers.

14. Select the most suitable position for the plough. The link arms (5) should be near horizontal.15. Mark out the mounting holes for the two mountings (4).

• Note: - The mountings may be fitted on top, inside or below the conveyor stringers to accommodate the position of the return belt and the conveyor decking, bracing etc.

16. Fix the mounting frame (4) firmly in position. If mounting on the inside of the stringer web is required the use of tapered washers may be required.

17. Ensure that the plough is securely linked to its mounting brackets (4) and that the carrier & blade assembly (1) is central.18. Ensure that a minimum overlap of 15mm on both sides of the belt is maintained and to clear the stringers during vertical movement.

It may be necessary to trim the ends of the carrier & blade assembly (1). 19. Securely lock the swivel mounts (3) to the carrier assembly (1).20. Check for free up and down movement with the belt of the plough and for good contact with the belt.21. Ensure safety chains (7) are firmly fixed to the mounting brackets (9) and carrier assembly (1), there should be enough slack to

accommodate blade wear and to prevent the carrier touching the belt.22. To ensure future adjustment of the spindle nuts wrap thread with protective cloth, to protect the thread against corrosion, rust and

ingress of dust.23. It may be necessary to install stabilising rollers to keep the belt surface flat and stop belt bounce.





PLOUGHS - PARTS REFERENCE DRAWINGS

Blade wear level

E405 ASSEMBLY

C

B

D

A

6

1

6





PLOUGHS - PARTS REFERENCE DRAWING (continued...)

E505 HEAVY DUTY PLATE ASSEMBLY

E505 STANDARD / HD BLADE ASSEMBLY

E505 HD MOUNT ASSEMBLYE505 STD MOUNT ASSEMBLY

Blade wear level

B

A

C

D

5

4

3

10

8

11

9





11.6. Maintenance For Scrapers

Brelko belt scrapers are designed to operate with minimum maintenance. However, to maintain superior performance some service is required. When the scraper is installed a regular maintenance program should be set up. This program will ensure that the scraper operates at optimal efficiency and problems can be identified and fixed before the scraper stops working. All safety procedures for inspection of equipment (stationary or operating) must be observed. The Scraper 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/tag-out procedures.

• New Installation

After the new scraper has run for a few days a visual inspection should be made to ensure the scraper is performing properly. Make adjustments as needed.

11.7. Routine Visual Inspection (every 2~4 weeks)

A visual inspection of the scraper and belt can determine:

• If the mounts are adjusted at the correct pressure for optimal cleaning

• 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 scraper components

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

• If there is cover damage to the belt

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

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

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

• 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 scraper to perform the following tasks:

• Clean material build-up off the scraper blade and shaft.

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

• Check blade for proper installation and condition. Replace if needed.

• Ensure full blade to belt contact.

• Inspect the scraper carrier for damage.

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

• Replace any worn or damaged components.

• Check the pressure of the scraper blade on the belt. Adjust the pressure if necessary, refer to scraper model installation guide.

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





12. Procedure for Replacing/Repairing Primary and Secondary Belt Scrapers

Repair/replace Belt Scraper components when general maintenance tasks are performed, scraper damage due to accelerated blade wear, scraper damage due to blocked chutes, clip joints/emergency belt repairs etc.

12.1. Request permit to work from an authorised person, who will isolate and lock out the belt.

12.2. Open access door, if provided, and clear loose items about the spindle before commencing with work.

12.3. Loosen the locknuts and then lower/raise the scrapers, as necessary.

12.4. If replacing scrapers, insert balance pipe – which must be longer than the carrier shaft – into the one end of the shaft.

12.5. Loosen the shaft and turn it 180 degrees, that is, scraper tips pointing downward.

12.6. Remove one spindle on the intended exit end.

12.7. Slide out the scraper assembly from the intended exit end of the pipe.

12.8. Service the scraper on the platform.

12.9. Blade replacement:

Refer to Brelko installation instructions for belt scraper model in use.

Brelko nylon torsion holders have been designed to break out of the torsion holder support v-track to protect the scraper, scraper mounting components, conveyor belt and conveyor belt equipment against damage due to emergency clip joints, loose/damaged splicing, belt protrusions, chute blockages etc. If torsion holders damaged occur follow the steps below to replace individual or all of the torsion holders:

a. Remove and clean the damaged scraper to assess the amount of damage to the scraper, the scraper torsion holders and scraper components.

b. If the scraper has been working for more than 4 weeks and/or there has been significant blade wear remove and replace all the torsion holders and blades and replace with new kits, this will eliminate belt damage due to uneven scraper torsion holder and blades.

c. If the scraper has been working for 1~2 weeks replace only damaged torsion holders and blades, however assess the damage and ensure the remaining torsion holders will not cause any damage to the conveyor belt.

12.10. Scraper Adjustment:

Refer to Brelko installation instructions for belt scraper model in use.

a. Reposition using the balance pipe.

b. Obtain sanction for test, or permission to adjust for performance evaluation.

c. Tighten all nuts and ensure that belt cleaning or scraper performance is acceptable.

d. Clear up any loose items which resulted from your work.





13. Trouble Shooting Primary and Secondary Belt Scrapers

Problem Possible Cause Possible Solution

Poor cleaning performance

Scraper under-tensioned Adjust to correct pressure - refer installation instructions

Scraper over-tensioned Adjust to correct pressure - refer installation instruction

Scraper installed in wrong location Verify dimension - refer installation drawing

Scraper blade worn or damaged Replace scraper blade

Rapid Blade Wear

Tension on scraper too high/low Adjust to correct tension - refer installation instruction

Scraper not located correctly Check scraper location for correct dimensions

Blade attack angle incorrect Check scraper location for correct dimensions

Material too abrasive for blade Option: switch to alternate scraper tip grade (contact Brelko for available options)

Mechanical splice damaging blade Repair, skive or replace splice

Centre wear on blade (smile effect)

Blade smaller than material path Add additional blade to match material path

Tension on scraper too high/low Adjust to correct pressure - refer installation instruction

Unusual wear or damage to blade

Mechanical splice damaging blade Repair, skive or replace splice

Belt damaged or ripped Repair or replace belt

Scraper not correctly located Verify dimension - refer installation drawing

Damage to pulley or pulley lagging Repair or replace pulley

Vibration or noise

Scraper not located correctly Verify dimension - refer installation drawing

Blade attack angle incorrect Verify dimension - refer installation drawing

Scraper running on empty belt Use a spray pole when the belt is empty

Scraper tension too high/low Adjust to correct pressure or slight adjust to diminish

Scraper locking bolts not secure Check and tighten all bolts and nuts

Scraper not square to head pulley Verify dimension - refer installation drawing

Material build-up in chute Clean up build-up on scraper and in chute

Scraper being pushed away from pulley

Scraper tension not set correctly Ensure correct pressure/increase tension slightly

Sticky material is overburdening scraper Increase pressure; add primary (head pulley) scraper

Scraper not set up correctly Confirm location dimensions are equal on both sides


maintenance manual · 2018. 9. 10. · brelko design and manufacture conveyor belt cleaning...

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