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GRUNDFOS INSTRUCTIONS
Unilift AP35B, AP50B
Installation and operating instructions

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Summary of Contents for Grundfos Unilift AP35B

  • Page 1 GRUNDFOS INSTRUCTIONS Unilift AP35B, AP50B Installation and operating instructions...
  • Page 2: Table Of Contents

    Read this document before installing the These installation and operating instructions product. Installation and operation must describe Grundfos Unilift AP35B and AP50B. comply with local regulations and Sections 1-6 give the information necessary to be accepted codes of good practice.
  • Page 3: Limited Warranty

    Indicates a hazardous situation which, Grundfos' warranty. if not avoided, could result in death or serious personal injury. Grundfos will not be liable for damage or wear to products caused by abnormal operating conditions, CAUTION accident, abuse, misuse, unauthorized alteration or...
  • Page 4: Notes

    3. Receiving the product 2.2 Notes The symbols and notes below may appear in CAUTION Grundfos installation and operating instructions, safety instructions and service instructions. Crushing of feet Minor or moderate personal injury Observe these instructions for explosion- - Wear safety shoes when handling proof products.
  • Page 5: Pipe Connection

    4.1 Pipe connection DANGER Threaded steel or rigid plastic pipes can be screwed directly into the 2" NPT outlet port. For permanent Electric shock installation, we recommend that you fit a union, a Death or serious personal injury non-return valve and an isolating valve in the outlet - Route the power cable in a way pipe.
  • Page 6: Location

    4.3 Location 4.5 Adjustment of cable length for a float switch The pump can be used in vertical as well as horizontal position. See fig. 3. The difference in level between start and stop can be During continuous operation, the motor and the inlet adjusted by changing the free cable length between strainer must be completely covered by the pumped the float switch and the pump handle.
  • Page 7: Starting Up The Product

    5. Starting up the product WARNING DANGER Electric shock Death or serious personal injury Sharp elements - As a precaution, connect the Death or serious personal injury product only to a properly grounded - Do not touch the inside of the receptacle.
  • Page 8: Starting

    7.1 Product description • liquids containing solids exceeding the pump's The Grundfos Unilift AP35B and AP50B pumps are recommended maximum particle size. single-stage, submersible pumps designed for the The pump is capable of pumping water containing a pumping of wastewater.
  • Page 9 Pumping of domestic wastewater with outlet from toilet rooms ● Check the regional or local EX-approval requirements for surface water at gas stations and in parking areas. Note: Unilift AP B does not have any explosion-proof approval. See Grundfos SL range.
  • Page 10: Identification

    7.3 Identification 7.3.2 Type key 7.3.1 Nameplate Unilift Code Example 35 B. 50. 08. A 1 .V Type range Type: UNILIFT XXXX.XX.XX.XXX Maximum Prod. No: XXXXXXXX solids size [mm] U: XxXXXV~XXHz Imax: X,XX A n: XXXX min Pump type: P1: X,XX hp XX,X lb Qmax: XX gal/min Hmax: XX ft...
  • Page 11: Functions

    8. Servicing the product 7.4 Functions Pump with float switch DANGER The float switch enables automatic start and stop of the pump according to the level of the pumped liquid. Electric shock Pump without float switch Death or serious personal injury - Switch off the power supply before A pump without a float switch requires manual starting any work on the product.
  • Page 12: Cleaning The Pump

    The part numbers and the components – Place the inlet part (6), the O-ring (37), the included in the service kits can be found in Grundfos pump housing (50) and the O-ring (7a) on top Product Center at www.grundfos.us. Alternatively, of the ring stand (84) and lower the pump onto contact your local Grundfos dealer or service center.
  • Page 13: Fault Finding The Product

    There is a short circuit in the Replace the defective part. cable or motor. The motor The temperature of the pumped Contact your Grundfos service protection or the liquid is too high. partner. thermal relay The impeller is blocked or partly Clean the impeller.
  • Page 14 Fault Cause Remedy The pump runs The pump is blocked by Clean the pump. See section but delivers no impurities. 8.1 Cleaning the pump. flow. The outlet pipe or the non-return Clean the outlet pipe or the non- valve is blocked by impurities. return valve.
  • Page 15: Technical Data

    1. Use the public or private waste collection service. Between 4 and 10. 2. If this is not possible, contact the nearest Grundfos company or service workshop. Maximum particle size Pump type Max. spherical diameter Unilift AP35B 1.38 in.
  • Page 16 Appendix Free-standing Installation Fig. A Dimensions [in. (mm)] 16.9 Unilift AP35B ≤ 600 W 2" NPT (430) (116) (73) (234) (210) Unilift AP35B > 600 W 17.9 2" NPT Unilift AP50B (455) (116) (73) (234) (210)
  • Page 17 Fig. B...
  • Page 19 GRUNDFOS Canada GRUNDFOS México GRUNDFOS Kansas City 2941 Brighton Road Boulevard TLC No. 15 17100 West 118th Terrace Oakville, Ontario L6H 6C9 Canada Parque Industrial Stiva Aeropuerto Olathe, Kansas 66061 Phone: +1-905 829 9533 C.P. 66600 Apodaca, N.L. México Phone: (913) 227-3400...
  • Page 20 96898403 0318 ECM: 1207316 www.grundfos.com...

This manual is also suitable for:

Unilift ap50bUnilift ap35b.50.08.a1.v

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