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BM&M Super Screen Installation & Maintenance Manual

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Super Screen
(Large)
INSTALLATION & MAINTENANCE
BM&M Screening Solutions
5465 Production Blvd.
Canada V3S 8P6
Toll-free: 1-800-663-0323
Phone: 604-539-1029
Fax: 604-539-1022
sales@bmandm.com
www.bmandm.com
Customer:
Presidium Equipment Ltd.
Location:
London, ON
PO#:
n/a
Screen Size:
5' x 10' 2-Deck Super Screen
Job #:
7351
Date:
July 2015
Your Rep. is:
Ninon Richard, Gaston Richard Inc.
Parts & Service: Tel. 450-649-1516
MANUAL
Surrey, BC

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Summary of Contents for BM&M Super Screen

  • Page 1 Phone: 604-539-1029 Fax: 604-539-1022 sales@bmandm.com www.bmandm.com Customer: Presidium Equipment Ltd. Location: London, ON PO#: Screen Size: 5' x 10' 2-Deck Super Screen Job #: 7351 Date: July 2015 Your Rep. is: Ninon Richard, Gaston Richard Inc. Parts & Service: Tel. 450-649-1516...

  • Page 3: Table Of Contents

    INDEX Section 1 INSTALLATION Page Support Stand Assembly Clearance Equal Hanger Loading Start-Up Start-Up Check List Section 2 MAINTENANCE Drive Unit Drive Belt Hangers Screen Removal Screen Replacement Section 3 SERVICE Drive Unit Replacement Hanger Bearing Replacement Drive Belt Replacement Section 4 SPARE PARTS Parts List...

  • Page 4: Support Stand Assembly

    Section 1 INSTALLATION To ensure the BM&M Screen is installed properly the following steps must be followed. READ ALL INSTRUCTIONS BEFORE PROCEEDING BM&M Screens are supplied with a tubular support stand. It is essential that the supports be properly engineered. See the certified setting plan drawing for the design criteria.
  • Page 5 BM&M Screening Solutions Toll-free 1-800-663-0323...
  • Page 6 BM&M HANGER LOCK NUT WASHER SUPPORT MEMBER HANGER BRACKET SAFETY BOLT WASHER LOCK NUT BM&M Screening Solutions Toll-free 1-800-663-0323...
  • Page 7 PARALLEL FLOW SCREEN DECK CONFIGURATION UPPER SCREEN REMOVAL INFEED DUST COVER SCREENS / BALL BOXES SCREEN BODY SUPPORT STAND MEASUREMENT X HANGER COUNTERFLOW SCREEN DECK CONFIGURATION UPPER SCREEN REMOVAL INFEED DUST COVER SCREENS / BALL BOXES LOWER SCREEN MEASUREMENT X REMOVAL BM&M Screening Solutions Toll-free 1-800-663-0323...

  • Page 8: Clearance

    Bolt on any discharge chutes that may have been shipped loose. Bolt on the motor, motor base, drive belt and drive guard if these items have been shipped loose. When installing the belt on the drive pulley ensure that if does not come off the driven pulley.

  • Page 9: Equal Hanger Loading

    EQUAL HANGER LOADING Equal hanger loading is critical for smooth running, long machine life and minimal vibration of the support structure. Improperly loaded hangers can throw the machine out of balance and may cause severe damage to the hangers or supporting structure.

  • Page 10: Start-Up

    Note: After the equal hanger loading procedure is completed satisfactorily, the Bottom Yoke bolts must be torqued to 480 ft-lbs., lubricated. START-UP Grease U-joints before start-up. Before starting the machine be sure that nothing is fouling the screen and that all guards are in place. A new machine will have high initial internal friction and high current draws during initial start-up.
  • Page 11 SAFETY STRAP LUG (LOCATE TO OVERHEAD SUIT LENGTH) STEEL SHACKLE NYLON STRAP SECURE STRAP TIGHTLY TO PREVENT CHAFING HANGER ROD HANGER BRACKET BM&M Screening Solutions Toll-free 1-800-663-0323...

  • Page 12: Start-Up Check List

    BM&M START-UP CHECK LIST Is there 4” of horizontal clearance all around the screen? Have the hangers been checked for equal loading? Have the U-joints been greased? Are the hanger safety bolts secured? Is the motor voltage correct? Is the motor speed correct? Does the power supply cable have enough freedom of movement? Is the belt alignment okay and tension correct? Is the drive guard in place?

  • Page 13: Drive Unit

    Section 2 MAINTENANCE The BM&M screen requires very little maintenance due to a minimum of moving parts and robust construction. DRIVE UNIT The drive unit is a heavy duty double-row tapered roller unit encased in a solid steel housing. It utilizes spring-loaded radial lip seals and comes prepacked with grease.
  • Page 14 The screen mesh may be fastened to the ball box frame depending on the specific installation conditions. Screens have reinforced hooks on the two longitudinal edges and are utilized to tension the screens. Full-length skirts engage into the reinforced hooks and generate the tension via a series of threaded rods and hex nuts through the side wall of the screen body.
  • Page 15 ONE DECK ASSEMBLY FLOW CLEANING BALLS (IF SO EQUIPPED) BALL DECK FRAME OR SCREEN MOUNTING FRAME SCREEN SKIRT DUST COVER TENSION HOOKED EDGE ADJUSTING NUT SET SCREW BALL DECK FRAME BM&M Screening Solutions Toll-free 1-800-663-0323...
  • Page 16 TWO DECK ASSEMBLY SCREEN SKIRT DUST COVER HOOKED EDGE TENSION ADJUSTING NUTS SET SCREW BALL DECK FRAME THREE DECK ASSEMBLY SCREEN SKIRT DUST COVER HOOKED EDGE TENSION ADJUSTING NUTS SET SCREW BALL DECK FRAME BM&M Screening Solutions Toll-free 1-800-663-0323...

  • Page 17: Screen Removal

    SCREEN REMOVAL In most cases the screens and ball decks can be removed in one of three ways, as shown on page 19. 1. Through the access door; located at the infeed end of the machine. 2. Through the discharge end, as the discharge chute assembly is bolted on but is equipped with hinges that allow it to be swung open.

  • Page 18: Screen Replacement

    2. Loosen the tension skirts, raise the skirts and lock them in the “up” position. 3. Loosen the set screws located at both sides and ends of the machine. 4. Pull out the screen elements and ball deck together. The ball deck sections are bolted together as shown on page 20.
  • Page 19 screen element is then placed on top of the pipes and pushed into position. Once the screen is in position the pipes can be removed. Lower the tension skirts in position and snug them up so that the screen remains centered on the ball decks.
  • Page 20 BM&M Screening Solutions Toll-free 1-800-663-0323...
  • Page 21 BM&M Screening Solutions Toll-free 1-800-663-0323...
  • Page 22 BM&M SUPER SCREEN SCREEN REMOVAL PROCEDURE The BM&M Screen is supplied with Screen Removal Tools. BM&M part number SR-2 TENSION SKIRT SR-2 TOOL To remove the screens open the infeed door or discharge chute (whichever is more convenient). SCREEN TO...
  • Page 23 Section 3 SERVICE These serviceable items on BM&M screens may need periodic replacement. Drive Unit Hanger Bearings Belt Drive Motor DRIVE UNIT The BM&M screen drive unit is located in the central drive box. See drawings on pages 24 and 25. Procedure for removal and replacement: 1.
  • Page 24 Attaining proper bolt torques is essential for all fasteners that are used in the main drive assembly – especially the six 1” NC bolts that secure the drive unit. These are the correct bolt torques for all Grade 5 NC bolts used in the drive assembly.
  • Page 25 BM&M Screening Solutions Toll-free 1-800-663-0323...
  • Page 26 MAIN DRIVE ITEM DESCRIPTION ASSEMBLY Plug Bolt End Cap Bolts End Cap Retainer Bolt End Cap Retainer Clamp Top End Cap Cover Bolts Drive Box Cover Top Hub (welded in) Split Ring Belt Sheave Bolts Driven Sheave Motor Counterweight Bolts Counterweight Drive Unit Bottom Hub (welded in)
  • Page 27 HANGER BEARINGS The hanger bearings may be replaced by removing the entire hanger assembly from the screen. The screen can be supported on the remaining three hangers while the fourth is being serviced. The U-joints are replaced by using a replacement kit consisting of the cross, four bearings and a set of snap rings.

  • Page 28: Drive Belt Replacement

    SUPER SCREEN EXPLODED VIEW DRIVE BELT REPLACEMENT Turn the power OFF. Remove the skirt angles as required. DUST COVER Remove the top screen(s). Remove the fines pan section. Remove the perimeter drive box cover bolts (mark the position of the cover before removal).

  • Page 29: Spare Parts

    Section 4 SPARE PARTS The quantities listed on the Parts List on the next page are the total number of replacement parts for the complete machine. While it is not necessary that a user have all the quantities on hand, it is recommended that the following parts and quantities be carried in stock at all times.

  • Page 30: Parts List

    PARTS LIST BM&M Screening Solutions Toll-free 1-800-663-0323...
  • Page 31 TOOLS REQUIRED INSTALLATION AND MAINTENANCE 1/2” sq. drive socket set including the following socket sizes: 3/8” Regular 7/16” Regular 1/2” Regular 9/16” Regular 3/4” Regular 15/16” Regular 5/16” Allen Head 15/16” Deep Socket 3/4” sq. drive socket set including the following sockets: 1 1/8”...

  • Page 32: Mechanical

    Section 5 TROUBLESHOOTING MECHANICAL SYMPTOM CAUSE 1. Erratic motion or exaggerated stroke - Slipping V-belt - Motor improperly wired - Motor voltage incorrect - Motor RPM incorrect - Drive pulley incorrect - Insufficient clearance - Hanger loading unequal 2. Excess vibration of support - Support not properly braced - Support points not strong enough - Hangers not loaded equally...

  • Page 33: Performance

    Section 5 TROUBLESHOOTING PERFORMANCE SYMPTOM CAUSE 1. Spilling - Non-centered feed - Excessive surge - Excessive drift 2. Poor fines removal - High fines content - Screens are blinding - Fines screen is too small - Overloading - Fines screen open area is too small BM&M Screening Solutions Toll-free 1-800-663-0323...

  • Page 34: Warranty

    Section 6 WARRANTY Duration BM&M’s Warranty is valid for 12 months from start-up or 18 months from the date of shipment which ever occurs first. The exception to this is the Main Drive Bearing Unit which is covered for 3 years. Items Covered Under Warranty Defect in design, material or workmanship that leads to failure of bearings or bolted assembles, broken welds or metal fatigue.

  • Page 35: Warranty Claims Procedure

    Section 6 WARRANTY Warranty Claims Procedure Submit a Warranty Claim 1. Contact your BM&M sales representative and advise them of your situation. 2. If you need parts urgently you must issue a purchase order to your sales representative. Please indicate on your purchase order that the parts ordered are for warranty submission.

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