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DONATI SOLLEVAMENTI S.r.l. - Via Quasimodo,17 - 20025 Legnano (MI) - Tel. 0331 14811 - E: [email protected]

6.7 Troubleshooting guide

6.7.1 Malfunctions and irregularities

•

The following are the primary, reasonably foreseeable malfunctioning conditions related to operating functions
on the

“DGT” drive units

endcarriages

PROBLEM

POSSIBLE CAUSES

A single “DGT” Unit or Beam won’t start

•

motor power cable

•

motor malfunction

•

blocked brake

•

reducer jammed

•

blocked wheel

The pair of “DGT” “DGT” Units or Beams won’t start

•

motor power cable

•

motor fuses

•

temperature sensors tripped (if available)

•

forward/reverse limit switch

•

forward/reverse contactor

•

forward/reverse command button

The driving operation won’t stop in the required space

•

worn out brake

The driving operation won’t stop at the end of the stroke

•

worn out brake

•

limit stroke operation

The reducer is excessively noisy

•

lack of lubricant

•

incorrect/overly intense operation

•

unsuitable rail tolerances (planarity/parallelism)

Grating brake sound during braking

•

check for dust

•

excessive play

•

worn out brake lining

Strident noise from the wheels (advancing in jolts)

•

incorrect play between wheel and rail way

•

unsuitable rail tolerances (planarity/parallelism)

•

incorrect/overly intense operation

The “DGT” Units or Beams start up too slowly or
uneasily and do not transfer the maximum load

•

voltage malfunction

•

overload, incorrect/overly intense operation

•

a reducer is beginning to jam

•

incorrect contact between rail and wheel

•

unsuitable rail tolerances (planarity/parallelism)

The “DGT” Units or Beams skid on the rails

•

obstacles on the rail way

•

oil, grease or paint on the rail way

•

unsuitable rail tolerances (planarity)

Содержание DGT Series

Страница 1: ...Drive UNITS FOR CRANES DGT Wheel Groups DGP Offset Geared Motors Endcarriages for Single girder and Double girder Bridge Cranes OPERATING MANUAL INSTALLATION USE MAINTENANCE KMAN19MG00...

Страница 2: ...rations 11 2 3 6 Classification of DGT series drive units 3 SAFETY AND ACCIDENT PREVENTION MEASURES 12 3 1 Operator qualifications 12 3 2 General safety norms and regulations 13 3 3 Safety symbols and...

Страница 3: ...6 MAINTENANCE 34 6 1 Safety precautions 34 6 2 Qualifications for maintenance personnel 36 6 3 Maintenance program 39 6 3 1 Daily and periodic maintenance 39 6 3 2 Maintenance frequency and deadlines...

Страница 4: ...conservation If this operating should go missing or become damaged a replacement copy must be ordered directly from the manufacturer citing the code of this present operating manual The manufacturer m...

Страница 5: ...to consider proposals for improvements so as to render this manual more responsive to the needs of users 1 4 Conformity to norms and regulations The components illustrated in this publication have bee...

Страница 6: ...ill trained personnel So as to avail itself of the warranty as outlined in the certificate below the buyer must meticulously observe the prescriptions indicated in this operating manual specifically...

Страница 7: ...ssembled to one other in relation to the user s requirements allow for the fast and economical realization of multiple standard and special configurations DONATI drive units are configured in 6 produc...

Страница 8: ...lindrical high resistance steel gears featuring spiral toothing thermically treated entirely supported on ball bearings Sized to resist a lifetime of stress and wear in accordance to the pertinent ISO...

Страница 9: ...rs guarantee accurate alignments control over high running speeds easy installation and maintenance 2 2 2 The range of endcarraiges The range of endcarriages for bridge cranes are designed in 6 produc...

Страница 10: ...DONATI SOLLEVAMENTI S r l Via Quasimodo 17 20025 Legnano MI Tel 0331 14811 E dvo info donaticranes com 10 2 2 3 Components on travelling beams...

Страница 11: ...he special waterproof paintwork finish adopted for electro mechanical parts swinging reducer and self braking drive motor obtained using an electrostatic process and the complete sealing of parts guar...

Страница 12: ...ust also carefully observe all safety norms and regulations contained in this section of the operating manual in order to prevent potentially dangerous situations 3 1 Operator qualifications The table...

Страница 13: ...asures specifically checking that the DGT drive units and or endcarriages have been set in stop mode no power or movement and in a stationary position disabled power cut off subjected to preventive me...

Страница 14: ...uthorized personnel is forbidden WARNING SYMBOLS USED TO INDICATE OBLIGATIONS SYMBOL MEANING CONSULT THE MANUAL Consult the manual when this symbol appears preceding or within an indication instructio...

Страница 15: ...Beams and or Wheels Ascertain that the rail wheel contact area is 2 7 m above the walking area For quotas 2 7 m enact special technical measures RISKS DURING MAINTENANCE DANGER RISK CAUTION WARNING OB...

Страница 16: ...t the maximum travelling speed fig 3 2 Limit switches fig 4 a Electrical rotating shaft cross type when included equipped with sensitive micro switches which by activating the auxiliary circuit limit...

Страница 17: ...and address specific weight of the motoreducer type serial number and code of the motor year of manufacture typical electrical specifications for the motor power absorption etc CE marking for the foll...

Страница 18: ...ting manual comprises the Manufacturer s Declaration Annexe IIB The packaging if part of the shipment is in good condition and does not present damages In case of damage or missing parts notify the sh...

Страница 19: ...a transverse bar of suitable diameter and a lifting accessory slinging the group using two chains or straps fig 7 The wheel groups weight less than 30 kg and as such can be handled manually 2 DGP off...

Страница 20: ...nt are whole and that no parts and or accessories are missing Promptly notify the manufacturer of any damage or missing parts To store the materials follow the instructions outlined at section 4 5 1 S...

Страница 21: ...JR EN 10027 and applicable regulations To assemble the beams incorporating the DGT drive units using an electric welding process be sure to respect the tolerances prescribed by ISO regulation 8306 88...

Страница 22: ...n the wheel 7 4 Fasten the motoreducer 5 to the reaction arm 1 using the screw and nut 8 and inserting the rings 9 according to the correct sequence illustrated in the diagrams fig 11a and 11b and the...

Страница 23: ...eel group Combination of DGT wheel groups with DGP offset gearmotors valid for both left and right operation Size mm DGP offset gearmotors Size 1 DGP offset gearmotors Size 2 3 200 4 250 Assembly diag...

Страница 24: ...hose on the beam 2 2 Insert the screws 3 taking care to maintain the nuts and rings 4 on the outside i e on the plate 1 3 Screw on and set the nuts 4 without tightening them to allow the insertion of...

Страница 25: ...the sliding units corresponds to the power voltage available 2 Verify the suitability and correct operation of the electrical system and grounding 3 Perform the electrical connections on the motor te...

Страница 26: ...ur in the corresponding directions If the direction of the movements does not correspond to the required function immediately stop the manoeuvre and invert the connection of two of the phase connectio...

Страница 27: ...ation alarm button if available verify the forward reverse sliding function in the case of movements at two speeds verify their operability check the operation of the motor brakes in their forward rev...

Страница 28: ...protect all materials using barriers and hygroscopic salts Demarcate and cordon off the material storage areas 4 5 2 Resetting up the units after storage Before operating the DGT drive units and endc...

Страница 29: ...food products or substances which can come into direct contact with parts on the DGT drive units and endcarriages or their lubricants loads whose static and or chemical physical configuration or bala...

Страница 30: ...ges in maximum safety conditions For operations in areas not sufficiently lit operators must be equipped with a supplementary lighting system illuminating shadowy areas that can prevent or reduce visi...

Страница 31: ...nerate dangerous load oscillations with risks of collisions or violent impacts between the DGT drive units or endcarriages and the endstroke mechanical stops Operate with attention and diligence keepi...

Страница 32: ...drive units and endcarriages are positioned at a height of 2 7 m from the flooring i e such as to ensure that the operator will not interfere with moving elements wheels girders If this is not possib...

Страница 33: ...e g pulling or dragging objects NEVER collide or impact load bearing structures machinery or installations with the DGT drive units and endcarriages NEVER leave the DGT drive units and endcarriages ex...

Страница 34: ...RNING and DANGER every time a procedure is requested which can entail a risk of damage or injury WARNING notes precede operations which unless correctly performed can cause damage to the DGT drive uni...

Страница 35: ...ke certain that a suitable ground connection exists and that it responds to ordinances in force Failure to provide a ground connection for electrical equipment can cause serious damage to personnel Be...

Страница 36: ...the DGT drive units or endcarriages Qualifications requested qualified for work operations in relation to specific operative and environmental conditions Mechanical maintenance personnel Typical main...

Страница 37: ...g as an industrial electrician with specialization and experience in maintenance on industrial lifting and handling systems Electromechanical maintenance personnel Operators who possess specifications...

Страница 38: ...acity to organize measures capable of restoring proper performance to the DGT drive units or endcarriages capacity to draw up a summary of maintenance interventions Qualifications requested complete t...

Страница 39: ...tenance operations that can be performed directly by the operator making use of the machine on which the DGT drive units or endcarriages are assembled or by specially qualified personnel as outlined i...

Страница 40: ...ntenance checks Page Daily Monthly Quarterly Annualy Controls Inspections Tests General visual checks Verify proper operation General visual checks Verify wear Annual tests 55 Drive motors Load tests...

Страница 41: ...eck to make certain the brake unlocks correctly with each intervention and the rotor does not remain braked and or chaffing is detected With a nominal load control braking spaces times and effectivene...

Страница 42: ...re in perfect condition repairing any damage found is required The reaction arms on the swinging reducers and hinged brackets and pins are subject to wear as moving and oscillating elements under ongo...

Страница 43: ...s and or conductors that appear broken cut peeled or eroded Never carry out hasty repairs 6 3 4 Cleaning and lubrication DGT drive units or endcarriages must be thoroughly cleaned every three months i...

Страница 44: ...brake spaces proper maintenance on the brake is consequently essential Adjust the brake torque as follows A On the outside adjust the brake torque in the case of modest wear or to modify preset torque...

Страница 45: ...e head screw the spring thrust is at its minimum setting and consequently the brake torque is also at a minimum 2 Reset the hexagonal concave head centre screw with the desired washers and tighten sec...

Страница 46: ...ke block of 1 mm 5 Draw the brake block in towards the ring nut matching up the boreholes 6 Reset the three screws into their original housings on the ring nut fastening them onto the block fig 23 7 R...

Страница 47: ...rness textile fabric sling fastened loop like onto the connection area between the motor and swinging reducer fig 25 Disassembling the DGP offset gearmotor fig 26 1 Cut off power to the DGT drive unit...

Страница 48: ...ation with respect to the flooring and available spaces dimensions and weight of the parts to be replaced 6 6 1 Replacing the brake on the motors on DGT drive units and endcarriages To replace the mot...

Страница 49: ...ing harness Fig 31 It is advisable to replace all the wheels even if some of them appear in good condition To replace the wheels proceed as follows Fig 32 1 For a power wheel disassemble the offset ge...

Страница 50: ...n out brake The driving operation won t stop at the end of the stroke worn out brake limit stroke operation The reducer is excessively noisy lack of lubricant incorrect overly intense operation unsuit...

Страница 51: ...urnt out due to high start up frequencies insufficient protection replace the fuse check contactor power cable rewind the motor and ensure better protection check the control device Motor doesn t star...

Страница 52: ...rials Do not attempt to re use parts or components on the DGT drive units or endcarriages which can appear still whole once they have been declared as no longer suitable through controls and or part r...

Страница 53: ...42 CE must mandatorily accompany lifting equipment for which DGT units or sliding beams have been incorporated In addition to all activities regarding the working life and usage of the DGT units or e...

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