Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Summary of Contents for Milltronics MWL
- Page 1 Milltronics Weight Lifter Instruction Manual June 2001...
- Page 2 Contact SMPI Technical Publications at the following address: Technical Publications Siemens Milltronics Process Instruments Inc. 1954 Technology Drive, P.O. Box 4225 Peterborough, Ontario, Canada, K9J 7B1 Email: techpubs@milltronics.com For the library of SMPI instruction manuals, visit our Web site: www.milltronics.com © Siemens Milltronics Process Instruments Inc. 2001...
-
Page 3: Table Of Contents
Test the unloaded MWL / Align crank bodies ..............10 Install calibration weights / Check for clearance .............11 Test the loaded MWL .......................14 Shim the MWL (if required) / Recheck base-bar weight for clearance ......15 Operation ..........................17 Applying calibration weights ....................17 Storing calibration weights .....................17... -
Page 4: Milltronics Weight Lifter (Mwl): Introduction
The MWL is manually operated, and utilizes a high mechanical advantage to enable weights up to 225 Kg (500 lb) to be applied with very limited effort. The crank handle can be attached to either the left or right crank body. -
Page 5: Mwl Components
(Left-hand, clockwise-rotating crank-body shown) Worm Gear Travel Stop Connecting Shaft Input Shaft Torque Tube Guide-pin Lifting-pad (lifts as it rotates) Removable Crank Handle Travel Stop Plate Guide Drive Plate Output Shaft 7ML19981CR01 Milltronics Weight Lifter MWL – Instruction Manual Page 3... -
Page 6: Calibration Weight Arrangement
The horseshoe weights are not symmetrical: an offset channel locates them on the base-bar weight. Rotate alternate weights through 180 so that the weights are staggered, to stabilize the base-bar weight. offset Page 4 Milltronics Weight Lifter MWL – Instruction Manual 7ML19981CR01... -
Page 7: Specifications
• See detail installation drawings on page 20, page 21, and page 23, for MUS-STD Standard Duty, MUS-HD Heavy Duty, and MSI Single Idler belt scales. Approvals • The MWL Milltronics Weight Lifter is in compliance with Directive 98/37/EC. 7ML19981CR01 Milltronics Weight Lifter MWL – Instruction Manual... -
Page 8: Installation
Installation The Milltronics belt scale must be completely installed before you install the MWL. Please refer to the belt scale installation manual for installation details. Note: Check that there will be sufficient clearance for the MWL. (See detail, Check Clearance for Conveyor Belt: page 8.) Clearance can be created artificially by shimming the idlers in the scale area. -
Page 9: Mount Left-Handed And Right-Handed Crank Body
Refer to the shim thickness tables on page 15 to determine whether you need to shim the MWL. Shimming is not always required: it is more likely to be required with the MUS scale, and less likely with the other models. -
Page 10: Mount Torque Shaft / Check Clearance For Conveyor Belt
(See the Belt Scale Instruction Manual for detailed shim procedures.) Min.10mm (0.38") clearance to underside of return belt + allowance for belt sag Top of torque tube 176mm (6.94") Top of stringers Page 8 Milltronics Weight Lifter MWL – Instruction Manual 7ML19981CR01... -
Page 11: Install Crank Handle
Secure the handle in place using the tethered locking ball-pin provided. Locking ball-pin (tethered to Crank Handle) Crank Handle Bolt Shaft Extension Bolt (female end) Input Shaft Locking ball-pin (tethered to Crank Body) Washer Hole for storage on locking ball-pin 7ML19981CR01 Milltronics Weight Lifter MWL – Instruction Manual Page 9... -
Page 12: Test The Unloaded Mwl / Align Crank Bodies
Retighten the bolts that mount the two crank bodies. d. Check again, and repeat the process until the MWL operates smoothly, with no resistance. Page 10 Milltronics Weight Lifter MWL –... -
Page 13: Install Calibration Weights / Check For Clearance
Milltronics belt scale. • Ensure there is 10mm (0.38") minimum clearance between the underside of the base-bar weight and the top of the lowered MWL lifting pads. If necessary, shim the belt scale and adjacent idlers to achieve this clearance. Calibration-weight support Underside of base-bar weight 10mm (0.38") minimum gap... - Page 14 Ensure there is 10mm (0.38") minimum clearance between the underside of the base-bar weight and the top surface of the calibration-weight support when the lifting pads are fully raised. If necessary, shim the MWL to achieve this clearance. Underside of base-bar weight...
- Page 15 MSI Scales: 12.5mm (0.5") Vertical arm of calibration-weight support Base-bar weight • Recheck the crank body alignment: (See “Align the crank bodies to each other, if necessary” on page 10). 7ML19981CR01 Milltronics Weight Lifter MWL – Instruction Manual Page 13...
-
Page 16: Test The Loaded Mwl
MSI Scales: 12.5mm (0.5") Vertical arm of calibration- weight support Calibration weights • Recheck the crank body alignment: (See “Align the crank bodies to each other, if necessary” on page 10) Page 14 Milltronics Weight Lifter MWL – Instruction Manual 7ML19981CR01... -
Page 17: Shim The Mwl (If Required) / Recheck Base-Bar Weight For Clearance
Shim the MWL (if required) / Recheck base-bar weight for clearance When the MWL is used with the MUS belt scale, due to the wide variety of idler types and sizes, it may be necessary to shim the MWL for proper operation. - Page 18 10mm (0.38") above the calibration-weight supports. • Tighten the torque shaft bolts and the crank-body mounting bolts, then recheck all clearances. The MWL installation is now complete. Page 16 Milltronics Weight Lifter MWL – Instruction Manual 7ML19981CR01...
-
Page 19: Operation
Operation Note: To ensure accurate calibration, you must keep the area between the MWL lifting pads and the calibration weights clear of buildup during the calibration routine. (See Maintenance procedures on page 19.) Applying calibration weights Simply turn the crank handle until the calibration weights are fully lowered onto the calibration-weight supports of the belt scale. - Page 20 • Use the locking ball-pin tethered to the crank body nearest to the handle to secure the MWL from unintended use and to store the crank handle. • Insert the locking ball-pin through the hole in the crank handle, and into the insertion point in the center of the crank body.
-
Page 21: Maintenance Procedures
Remove any material build-up from the top surface of the calibration-weight supports between the calibration weights and the conveyor scale. Check inside the MWL crank body and inspect the worm gear drive: if material has accumulated here, remove it with an air stream or other suitable device. -
Page 22: Appendix I: Installation Drawings
Belt Width + 229 mm (9") Belt Width + 229 mm (9") or to suit or to suit Belt Base-bar weight centered on guide-pin Belt 10mm (0.38") minimum clearance from vertical arm to weights Page 20 Milltronics Weight Lifter MWL – Instruction Manual 7ML19981CR01... -
Page 23: Mwl Installation Drawing For The Mus-Hd Heavy Duty Belt Scale
Belt Base-bar weight centered on guide-pin Belt 10mm (0.38") minimum clearance from vertical arm to weights Retrofitting an MUS-HD Heavy Duty Belt Scale: See next page for details. 7ML19981CR01 Milltronics Weight Lifter MWL – Instruction Manual Page 21... -
Page 24: Retrofitting An Mus-Hd Heavy Duty Belt Scale
Retrofitting an MUS-HD Heavy Duty Belt Scale: Two new idler clamping brackets are supplied with the MWL. These brackets provide better clearance for the base-bar weight and the flat bar calibration weights. • Replace the existing idler clamping brackets with the new idler clamping brackets, one at a time, re-using the existing bolts, nuts, and washers. -
Page 25: Mwl Installation Drawing For The Msi Or Mmi Belt Scale
Retrofitting an MSI or MMI Belt Scale: Two new calibration-weight brackets are supplied with the MWL to replace the existing calibration-weight bar. New bolts are supplied, but you will also need a C-clamp, metric Allen keys, and metric wrenches. - Page 26 Calibration-weight bar removed Calibration-weight brackets Bolts - (step 6) Remove the two socket-head cap-screws that secure the calibration-weight bar, then remove the calibration-weight bar from the dynamic beam of the belt scale. Page 24 Milltronics Weight Lifter MWL – Instruction Manual 7ML19981CR01...
- Page 27 Remove the four socket flat-head bolts that secure the idler support angle-brackets. Mount the new calibration-weight brackets using the same holes as the idler support angle brackets. Use the new bolts and nuts supplied with the MWL, and hand-tighten the nuts.
- Page 28 Page 26 Milltronics Weight Lifter MWL – Instruction Manual 7ML19981CR01...
-
Page 29: Appendix Ii: Customer Calculation Sheet
Calculation of Load Reference Values Calibration Reference Value in kilograms/metre = Grand Total in kg Idler Spacing in m Calibration Reference Value in lb/foot = Grand Total in pounds Idler Spacing in feet 7ML19981CR01 Milltronics Weight Lifter MWL – Instruction Manual Page 27... -
Page 30: Using The Factoring Function Of The Belt Scale Integrator
Using the Factoring Function of the Belt Scale Integrator If the belt scale system has been pre-calibrated, as in the case of an MWL retrofit, the belt scale system should be zeroed. The Factor function of the Integrator should be used to accurately determine the value of the calibration weights in terms of the existing span calibration. - Page 31 *7ML19981CR01*...
Need help?
Do you have a question about the MWL and is the answer not in the manual?
Questions and answers