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' 10 1996 r 1-1PII IEE TECHROLOGIES No 39;'1 P _2!51 Y Z 4. Start of operation Retightening of the V-belts for models HRD 41 If the rated current indicated on the follows HRD 7/23 is to be carred out as rating plate ist being exceeded during Operation, it should be checked whet- 510 Remove drive belt guard, item 7 her the available supply voltage and 511 Loosen hexagonal nut, item 10, adjust t frequency are in accordance with the tension of V belts by tightening or embossed data Some blowers cannot loosening the adjusting screw, item 11 be operated with free air flow (see (see instruction plate), accordingly catalogue) and if in such a case the 512 Tighten hexagonal nut, item 10 system's resistance is too small, cur- 513 Reassemble drive belt guard, item 7 rent absorption will become too high 514 Attention should be given to exact y and an overload of the motor will occur alignment of the V-belt pulleys x By fitting a throttle flap on the intake or discharge side of the blower the volu- me flow will be reduced and an overlo- ad avoided 6. Repairs 19 61 Repair work on blowers should generally be done in the factory only ' k S. Maintenance - , Exceptionally repairs may be carried € out in a workshop possessing the High pressure blowers are equipped with necessary qualifications and facilities enclosed grooved ball bearings which do Units with an explosion-proof motor not need lubrication. The grease filling is must be repaired by the manufacturer sufficient or the whole service life of the only. bearings l Tension control of the V-belts is to be car- ned out in accordance with the indicated values on the rating plate They are fixed to 7 Warranty, technical details the support flange, item 8, to the blower It 71 Legal warranty begins with the day of flange, item 6, respectively to the blower, , shipment base, item 5 72 Our warranty is valid only if the instruc- Retightening of the V-beats for models tions or installation and operation are HRD 1/2 - HRD 2/5 is to be carved out as strictly adhered to follows 73 Technical details regarding installation, 5.1 Remove cover guard, dem 10 I operating conditions and electrical connections may be obtained from the 52 Loosen hexagonal nut, item 18 53. Increase tension of V-belts by tighten company's experts ' ing hexagonal nut~ item 19 (see rating plate) ' 54 Tighten hexagonal nut, item 18 ' 55 Reassemble cover guard, item 18 6• Spare parts list Retightening of the V-belts for models HRD When ordering spare parts please state 65/2 - HRD 65/7, HRD 60/3 and HRD 60/ serial number of the unit, type and part 5 is to be carried out as follows number in accordance with the following 56 Remove drive belt guard, item 7 lists and drawings 57 Adjust tension of V-belts by loosening or tightening nuts on the threaded bolt, item 10 (see rating plate) 58 Retighten hexagonal nuts on threaded bolt, item 10 59- Reassemble drive belt guard, item 7