Grundfos LS 65-50-241 Service Instructions Manual
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Grundfos LS 65-50-241 Service Instructions Manual

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GRUNDFOS INSTRUCTIONS
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Summary of Contents for Grundfos LS 65-50-241

  • Page 1 GRUNDFOS INSTRUCTIONS Service instructions...

  • Page 3: Table Of Contents

    - Action to avoid the hazard. Taking the product out of operation Short-term shutdown 1.2 Notes Long-term shutdown The symbols and notes below may appear in Grundfos Identification installation and operating instructions, safety instructions and Nameplate service instructions. Type key...

  • Page 4: Service Tools

    2. Service tools 2.1 Special tools Pos. Description For pos. Further information Part number Punch (brass) SV0282 Bearing heating inductor (for assembly) 53, 54 Round nut tool 2.2 Standard tools Pos. Description For pos. Further information Part number 1 - 1/2" 1 - 5/16"...

  • Page 5: Servicing The Product

    Death or serious personal injury If you request Grundfos to service the product, contact Grundfos - Pay attention to the direction of the vent hole, and with details about the liquid before returning the product for ensure that the escaping water does not cause service.

  • Page 6: Dismantling And Assembling The Product

    6. Loosen the set screws in the coupling flange of the pump. Black pearl NLGI 2 7. Pull the coupling flange off the pump shaft using a puller. Philips Polytac Texaco Polystar RB Grundfos recommends Shell Gadus S2 V2202 or SKF LGHP 2 grease for relubrication.
  • Page 7 Removing the bearings and shaft seals, non-drive end 4.2.2 LS with sleeve, construction type 2 1. Remove the four screws (114a) holding the bearing cover The position numbers in the following refer to section 9.2 LS with (113d). sleeve, construction type 2 on page 23. 2.
  • Page 8 Removing the shaft, impeller and gasket Removing the upper pump housing 1. Lift the shaft (51), including the impeller (49) and wear rings 1. Loosen the screws (26c, 26d), and remove them. (45b), free of the lower pump housing (6b). 2.

  • Page 9: Dismantling The Pump, Without Sleeve

    Removing the bearings and shaft seals, drive end 4.3 Dismantling the pump, without sleeve 1. Remove the key (11a). 4.3.1 LS without sleeve, construction type 1 2. Remove the four screws (114a) holding the bearing cover The position numbers in the following refer to section 9.5 LS (113c).

  • Page 10: Assembling The Pump, With Sleeve

    4.3.2 LS without sleeve, construction type 2 Removing the upper pump housing 1. Loosen the screws (26c, 26d), and remove them. The position numbers in the following refer to section 9.6 LS without sleeve, construction type 2 on page 25. 2.
  • Page 11 Fitting the upper pump housing 4.4.2 LS with sleeve, construction type 2 1. Clean the packing face of the upper pump housing (6a), and Fitting the impeller fit the pump housing. 1. Fit the shaft (51) in the impeller (49). 2.
  • Page 12 Fitting the bearings and shaft seals Fitting the upper pump housing 1. Clean the O-ring on the shaft seal rotary part (105). Then fit it 1. Clean the packing face of the upper pump housing (6a), and along with the washer and spring. Start at the non-drive end. fit the pump housing.
  • Page 13 4.4.4 LS with sleeve, construction type 4 Fitting the bearings and shaft seals 1. Clean the O-ring on the shaft seal rotary part (105). Then fit it Fitting the impeller along with the washer and spring. Start at the non-drive end. 1.

  • Page 14: Assembling The Pump, Without Sleeve

    9. Install the bearing into the bearing (54) housing. Then install 4.5 Assembling the pump, without sleeve the washer and tighten the round nut. 4.5.1 LS without sleeve, construction type 1 10. Lock the nut by a lock washer. Fitting the impeller 11.

  • Page 15: Replacing Ring In The Stuffing Box, Ls With Sleeve

    Fitting the bearings and shaft seals 4.6.2 Assembly 1. Clean the seal head surface using clean paper. Install the seal 1. Measure the length of the used packing ring, and cut off a new head on the shaft, rely onto the seal retainer ring (105b). Start one of the same length.

  • Page 16: Alignment

    4. Checking angular alignment 5. Alignment Insert a pair of inside callipers or a taper gauge at four points at 5.1 Preliminary alignment 90 ° intervals around the coupling. See fig. 9. The angular alignment is correct when the measurements show that all points DANGER of the coupling faces are within 0.2 mm of each other.

  • Page 17: Taking The Product Out Of Operation

    The coupling alignment procedure has four steps: Angular alignment - vertically Parallel alignment - vertically 1. Turn the motor and pump shaft until the dial gauge (1) is in position 0 ° (12 o'clock). 1. Mount the dial gauge (2) in position 0 ° (12 o'clock). See fig. 2.

  • Page 18: Identification

    7. Identification CAUTION Hot or cold surface 7.1 Nameplate Minor or moderate personal injury - Make sure that the escaping water does not cause injury to persons or damage to the motor or other components. LS100-80-242E/235 1F2DS BBQE 1 11/4 - In hot-water installations, pay special attention to 99281199 P1 1832 0001 WRAS23C...

  • Page 19: Type Key

    7.2 Type key Code Example -100 -305X /273.1 , (W) D S BBQE 1 Type range LS horizontal version Nominal diameter of the inlet port (DN) Nominal diameter of the outlet port (DN) Maximum impeller diameter [mm] If suffix is used: "X"...
  • Page 20 With internal barrier fluid Synthetic polymer packing rings, graphite Example impregnated. NBR O-ring in the pump Grundfos type designation Material, rotating seal face Material, stationary seat Material, secondary seal and other rubber and composite parts The following table explains the positions (1), (2), (3) and (4).

  • Page 21: Standard Components And Material Specifications

    8. Standard components and material specifications Pos. Description Material Material standard Cast iron ASTM A48 Class35 Pump housing, upper Ductile iron ASTM A536, 65-45-12 Cast iron ASTM A48 Class35 Pump housing, lower Ductile iron ASTM A536, 65-45-12 Key, impeller Steel ASTM A216 WCB Key, coupling Steel...

  • Page 22: Sectional Drawings

    9. Sectional drawings 9.1 LS with sleeve, construction type 1...

  • Page 23: Ls With Sleeve, Construction Type

    9.2 LS with sleeve, construction type 2 9.3 LS with sleeve, construction type 3...

  • Page 24: Ls With Sleeve, Construction Type

    9.4 LS with sleeve, construction type 4 9.5 LS without sleeve, construction type 1 113d 105 105a 67b 11 49 113e 113c 113g 11a 113f 105b 113f 114a...

  • Page 25: Ls Without Sleeve, Construction Type

    9.6 LS without sleeve, construction type 2 113d 195 113f 58a 105 105b 20d 20e 109a 113f 114a 113g 11a 54c 114b 54d 79 105a 113c 9.7 LS, typical end view, non-drive end...

  • Page 26: Exploded Views

    10. Exploded views 10.1 Coupling Fig. 13 Joining with coupling...

  • Page 27: Ls With Sleeve

    10.2 LS with sleeve 10.2.1 Construction type 1 Fig. 14 Construction type 1: LS 65-50-241, LS 65-50-330, LS 100-80-241 X2...
  • Page 28 10.2.2 Construction type 2 Fig. 15 Construction type 2: LS 150-125-305, LS 150-125-381, LS 200-150-305C Fig. 16 Construction type 2: LS 125-100-279, LS 125-100-381, LS 125-100-305, LS 100-80-356, LS 200-150-305A...
  • Page 29 10.2.3 Construction type 3 Fig. 17 Construction type 3: LS 200-150-483 X5...
  • Page 30 Fig. 18 Construction type 3: LS 100-80-241 XE...
  • Page 31 Fig. 19 Construction type 3: LS 200-150-381, LS 250-200-305, LS 250-200-381, LS 300-250-305 Fig. 20 Construction type 3: LS 300-250-381...
  • Page 32 10.2.4 Construction type 4 Fig. 21 Construction type 4: LS 400-350-397 Fig. 22 Construction type 4: LS 350-250-498, LS 350-250-630...
  • Page 33 Fig. 23 Construction type 4: LS 200-150-508 Fig. 24 Construction type 4: LS 200-150-483 X6...
  • Page 34 Fig. 25 Construction type 4: LS 300-200-489, LS 350-250-508...

  • Page 35: Ls Without Sleeve

    10.3.1 Construction type 1 105a 105b 113c 113g 109b 124d 124c 113f 113d 113e 114a Fig. 26 Construction type 1: LS 65-50-241, LS 65-50-330, LS 100-80-241 105a 105b 113c 113g 124d 124c 113f 113d 113e 114a Fig. 27 Construction type 1: LS 100-80-356...
  • Page 36 20d 20e 17 105a 113c 105b 113g 124d 124c 113f 114a 113e 113d Fig. 28 Construction type 1: LS 150-125-305, LS 150-125-381, LS 200-150-305 105a 105b 113c 113g 124d 124c 113f 113d 113e 114a Fig. 29 Construction type 1: LS 125-100-279, LS 125-100-305...
  • Page 37 105a 105b 113c 113g 113f 124c 124d 114a 113e 113d Fig. 30 Construction type 1: LS 125-100-381 113c 105a 113g 105b 124d 124c 113f 113e 113d 114a Fig. 31 Construction type 1: LS 200-150-483...
  • Page 38 105a 105b 124d 124c 113c 113g 113f 113d 113e 114a Fig. 32 Construction type 1: LS 200-150-381, LS 250-200-305, LS 250-200-381, LS 300-250-305 105a 105b 124d 124c 113c 113f 113g 113d 114a 113e Fig. 33 Construction type 1: LS 300-250-381...
  • Page 39 10.3.2 Construction type 2 113g 105a 105b 124d 124c 113c 109a 113f 113f 114b 113e 113d 114a Fig. 34 Construction type 2: LS 350-250-498 105a 105b 124c 113c 113g 124d 109a 114b 113f 113d 113e 114a Fig. 35 Construction type 2: LS 450-350-397...
  • Page 40 113g 105a 105b 124d 124c 113c 109a 113f 113f 114b 113e 113d 114a Fig. 36 Construction type 2: LS 350-250-630 105a 124c 105b 124d 113c 113g 113f 113f 114b 113e 113d 114a Fig. 37 Construction type 2: LS 200-150-508...
  • Page 41 113c 113g 105a 124c 105b 124d 113f 113f 114a 114b 113e 113d Fig. 38 Construction type 2: LS 200-150-483 X6 113c 105a 113g 105b 124d 124c 109a 114b 113f 113f 113d 113e 114a Fig. 39 Construction type 2: LS 300-200-489, LS 350-300-508...

  • Page 42: Fault Finding The Product

    11. Fault finding the product DANGER Electric shock Death or serious personal injury - Before you remove the terminal box cover and before you remove or dismantle the pump, make sure that the power supply has been switched off and that it cannot be accidentally switched on. Faults Causes The pump delivers no liquid.

  • Page 43: Disposing Of The Product

    Extend the inlet pipe so that the risk of sucking air is eliminated. enough. Check with Grundfos if you can use a larger impeller. If not, reduce the outlet pipe The impeller diameter is too small. friction losses. But be careful not to seriously overload the motor.
  • Page 47 Brazil Turkey Unit 1, Ground floor Norway BOMBAS GRUNDFOS DO BRASIL GRUNDFOS POMPA San. ve Tic. Ltd. Sti. Siu Wai Industrial Centre GRUNDFOS Pumper A/S Av. Humberto de Alencar Castelo Branco, Gebze Organize Sanayi Bölgesi 29-33 Wing Hong Street &...
  • Page 48 99613935 0419 ECM: 1259735 www.grundfos.com...

This manual is also suitable for:

Ls 65-50-330Ls 100-80-241 x2Ls 150-125-305Ls 150-125-381Ls 200-150-305cLs 125-100-279 ... Show all

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