CEMB C72 Parts List

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8 - TO CHECK MACHINE CALIBRATION1) Mount an average size iron wheel and carefully preset the Distance / Diameter / Width.2) Make 10 consecutive measuring spins and determine the repeatability error (normally ± 1 g.; acceptable ± 2 g.).3) Balance the wheel as best as possible.4) Apply 100 g. on the outside; the following should be true:F.E. = 100 ± 5 F.I. ≤ 5 gr Weight F.E. = position = 6 o’clock5) Remove the 100 g. weight from the outside and apply it to the Inside; the following should be true:F.I. = 100 ± 5 F.E. ≤ 5 gr Weight F.I. = position = o’clock6) If the values are out of tolerance, proceed to a self-calibration and repeat points 3), 4), 5).9 - WHEEL MEASUREMENT AND PRESETTING ON THEBALANCING MACHINEThe ever increasing need for more accurate calibration and use of the ALU functions means that it isimportant to establish how to measure the rims and how the balancing machine interprets the presetdata. Hence a description is now given of how to modify the preset dimensions automatically in orderto obtain the distances of the correction planes which are defi ned as through planes for the centres ofgravity of the corrective weights.Consider a typical rim: size “l”, given as width by the rim manufacturer, differs from the measurementof the distance between the correction planes for the rim thickness and physical dimensions of thecounterweight, whose centre of gravity is located at distance “h” from the resting point of the rim edge.The balancing machine automatically corrects the measurement preset by adding 2 x h = 6 mm to themeasurement. Measurement “b” made with the gauge is generally more accurate even if very similar to themeasurement “l” known to the rim user. The two measurements differ only by the thickness of the sheetmetal, usually about 2 mm per side. Such insignifi cant distance means that an accurate calibration canbe obtained regardless of whether the inner rim with “l” or outer width “b” is preset. It is a good rule toadd ¼ inch to the value given by the manufacturer. As regards the ALU functions, the machine performsthe following approximations in addition to the systematic correction regarding the centre of gravity ofthe counterweight as seen above.I12/13 mmresting piano appoggio surfaceIEEALU 1a = a preset +¾”b = b preset -1 ½”d = d preset - 1”ALU 2a = a preset +¾”b = distance of adapter surface -½” -adl = d preset - 1”dE = d preset - 2 ½”ALU 3a = a presetb = distance of adapter surface -½” -adl = d presetdE = d preset - 2 ½”N.B.:I = INSIDEE = OUTSIDEM 0226 GB - 10IdIaIaEdEEALU 4a = a presetb = b preset -¾”dl = d presetdE = d preset - 1”ALU - Sa = aI preset -7 mmb = aE - aIdl = d presetdE = dI . 0.8
10 - HOW TO CHECK FUNCTIONING AND ACCURACYFurther to some notices informing us of defects and unaccuracies not clearly traceable, we are explaininghereunder the procedure how to check functioning and accuracy to help us to detect problems.FIRST CHECKS. Accurate wiping of adapter and cones. Spring cover sliding. Shaft end blockingCHECKING SENSOR (from Self-test page) – see SELF-DIAGNOSTICS -. POTENZIOMETER DIST.= between 50 and 1000 by pulling out distance gauge completely. POTENZIOMETER DIA= between 50 and 1000 by opening diameter gauge wide. Sonar 1= (w/monitor) Width. From 65000 to 3000 by approaching a target. Range: 40 ÷ 11 cm. Sonar 2= (w/monitor) eccentricity. From 65000 to 3000 by approaching a target. Range: 40 ÷ 11 cmGAUGE CALIBRATION (use an average size iron wheel i,.e. 14” x 6” ± 1”)- see AUTOMATIC GAUGES -. DIST./DIAM./LA WIDTH:Calibrate gauges and check accuracy. it is necessary to set the correct distance rate to obtain an accuratewidth measure.Tolerances: DIST.= 5 mm DIAM.= ± ½” WIDTH= ± ¼”. SONAR WIDTH (balancers with monitor):1. Mount an average size iron rim, detect accurately width measure by using a traditional gauge orby selecting the nominal measure written on the rim and adding ¼”2. Make the operations described in WIDTH GAUGE (OPTIONAL).Make sure calibration is correct. Amend distance rate (+/- 20 mm) if necessary until getting an accuratewidth indication. Any time distance rate is changed, repeat calibration.CALIBRATION (see SELF-CALIBRATION). Use the same wheel as for gauge calibration. Set accurate measures, in manual mode if necessary. Make self-calibrationCHECKING MACHINE CALIBRATION1. Make 10 spins without loosening the wheel and detect MAX oscillationsF.I. (Inner side)= F.E. (Outer side)= (tolerance ± 2)2. Put 100 gr. on FE fi rst and then on FI using an accurately balanced wheel) Detect ratesF.I.= F.E.= POS.E.= F.I.= F.E.= POS.I=(tolerance 3%)CHECKING THE ADAPTERTurn a fi ne balanced wheel upside down (180°) and detect unbalance ratesERR.MAX =This check-out in particular must be made with a sample wheel whose max unbalance errors due tocentering are well known (generally lower than 10 gr. for iron wheels).M 0226 GB - 11
Page 1 and 2:
Instructions for useIContentsPage1
Page 3 and 4: 1- GENERAL1.1 - GENERAL SAFETY RECO
Page 5 and 6: 3 - COMMISSIONING3.1 - ANCHORINGThe
Page 7 and 8: SE2-Dismounting360°abcdConee- Qua-
Page 9 and 10: 4.3 - AUTOMATIC DISTANCE AND DIAMET
Page 11 and 12: OPERATION FUNCTIONS MENUEccentricit
Page 13 and 14: 5.2.1.1 - “AUTOMATIC WIDTH” OPT
Page 15 and 16: 5.3 - RECALCULATION OF THE UNBALANC
Page 17 and 18: RESULTS UNBALANCE MEASUREMENTFig. 1
Page 19 and 20: 5.4.4 - ALU AND STATIC MODESFrom th
Page 21 and 22: 6.1 - SELF-DIAGNOSTICS6 - SET UPDIS
Page 23 and 24: 6.3 SCREEN SAVERIt is possible to e
Page 25 and 26: 6.3.3 - WIDTH GAUGE (OPTIONAL)Set w
Page 27 and 28: 10 - RECOMMENDED SPARE PARTS LIST(F
Page 29 and 30: 111923 10456737811108111Guarnizione
Page 31 and 32: C 72 (A) - C 72SE (B)E-0226-C72-GB.
Page 33 and 34: D0112-111 2 3 4 5 6 7 68 9 6 7 10 1
Page 35 and 36: D0140-1.1-BP1.1-BPONLY BN. CODE DAT
Page 37 and 38: D0112-33123 4121110945687N. CODE DA
Page 39 and 40: D0186-44171511716152431413111256879
Page 41 and 42: D0186-6611B25 2624231211A105 6 7222
Page 43: D0186-8-428-42N. CODE DATA N. CODE
Page 46 and 47: M 0226 - 2 GB
Page 48 and 49: 3.2 - CALIBRATION OF THE DISTANCE P
Page 50 and 51: 5 - TROUBLE SHOOTING SEQUENCETests
Page 52 and 53: 6 - POWER SUPPLY LAYOUT DIAGRAMFig.
Page 56: M 0226 - 12 GB
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