USER INSTRUCTIONS WORTHINGTON® LNN, LNNV and LNNC centrifugal pumps Installation Operation Maintenance Single stage, double suction, horizontal
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 10 of 56 flowserve.com 2 TRANSPORT AND STORAGE 2.1 Consignment receipt and unpack
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 11 of 56 flowserve.com Make sure that hazardous substances are disposed of safely a
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 12 of 56 flowserve.com 3.3.5 Bearing housing Two grease nipples enable grease lubri
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 13 of 56 flowserve.com 3.4.3 Energy efficient operation of pumps The pump supplied
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 14 of 56 flowserve.com d) The pump and driver have been aligned before dispatch how
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 15 of 56 flowserve.com While the pump is capable of operating with the maximum misal
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 16 of 56 flowserve.com 4.6.2 Maximum forces and moments allowed on pump flanges 4.
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 17 of 56 flowserve.com Load and momentum orientation of LNN and LNNV pumps Load and
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 18 of 56 flowserve.com 4.6.3 Suction piping Refer to the diagrams below for typical
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 19 of 56 flowserve.com A spool piece should be installed in the suction line so tha
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 2 of 56 flowserve.com CONTENTS Page 1 INTRODUCTION AND SAFETY ...
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 20 of 56 flowserve.com For electrical details on pump sets with controllers see the
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 21 of 56 flowserve.com 5.2 Pump lubricants 5.2.1 Recommended oil lubricants * Not
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 22 of 56 flowserve.com 5.2.3.2 Grease lubricated bearings When grease nipples are f
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 23 of 56 flowserve.com 5.5 Priming and auxiliary supplies Ensure all electrical, h
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 24 of 56 flowserve.com If no leakage takes place the packing will begin to overheat.
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 25 of 56 flowserve.com Motor rating kW (hp) Maximum stop/starts per hour Up to 15 (
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 26 of 56 flowserve.com 5.9.4 Net positive suction head (NPSHA) NPSH available (NPSH
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 27 of 56 flowserve.com j) Check the tightness of the connections. k) Check dirt an
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 28 of 56 flowserve.com d) Press grease into the bearing housing until the first sig
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 29 of 56 flowserve.com Any loss of coating material is considered to be normal wear
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 3 of 56 flowserve.com INDEX Page Additional sources (10.3) ...
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 30 of 56 flowserve.com 6.6.2 Other bolt locations Bolt size Torque Nm (lbf•ft) - ot
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 31 of 56 flowserve.com If optional bearing isolators or stationary labyrinths are fi
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 32 of 56 flowserve.com b) When removing the rotor unit, the casing wear rings [1500
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 33 of 56 flowserve.com b) The rotor always rotates towards the expanding section of
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 34 of 56 flowserve.com This allows the thickness to be varied in 0.05 mm (0.002 in.)
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 35 of 56 flowserve.com g) Fit the sleeve bearing upper half with pin and screws as
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 36 of 56 flowserve.com b) On oil lubricated units ensure that the shaft seal rings
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 37 of 56 flowserve.com 7 FAULTS; CAUSES AND REMEDIES FAULT SYMPTOM P u m p ove r
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 38 of 56 flowserve.com FAULT SYMPTOM P u m p ove r h e a t s a n d se i z e s
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 39 of 56 flowserve.com 8 PARTS LISTS AND DRAWINGS 8.1 LNN and LNNC – grease lubri
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 4 of 56 flowserve.com 1 INTRODUCTION AND SAFETY 1.1 General These instructions m
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 40 of 56 flowserve.com 8.1.1 Parts list - LNN and LNNC - sizes up to 350 mm dischar
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 41 of 56 flowserve.com 8.1.3 Scrap views options Cartridge seals Scrap section sh
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 42 of 56 flowserve.com 8.2 LNN and LNNC – grease lubricated and gland packed option
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 43 of 56 flowserve.com 8.2.1 Parts list - LNN and LNNC - sizes greater than 350 mm
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 44 of 56 flowserve.com 8.2.2 Options parts list - LNN and LNNC - sizes greater than
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 45 of 56 flowserve.com 8.2.3 Tilting pad thrust bearing – sizes greater than 350 mm
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 46 of 56 flowserve.com 8.3 LNNV sleeve bearing type – grease lubricated, component
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 47 of 56 flowserve.com 8.3.1 Parts list – LNNV - sizes up to 350 mm discharge Item
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 48 of 56 flowserve.com 8.3.2 Options parts list – LNNV - sizes up to 350 mm discha
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 49 of 56 flowserve.com 8.4 LNNV sleeve bearing type – grease lubricated and gland p
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 5 of 56 flowserve.com If the conditions of service on your purchase order are going
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 50 of 56 flowserve.com 8.4.1 Parts list – LNNV - sizes greater than 350 mm discharg
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 51 of 56 flowserve.com 8.4.2 Options parts list – LNNV - sizes greater than 350 mm
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 52 of 56 flowserve.com 10 OTHER RELEVANT DOCUMENTATION AND MANUALS 10.1 Supplement
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 53 of 56 flowserve.com Notes:
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LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 55 of 56 flowserve.com Notes:
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Your Flowserve factory contacts: Nominal pump discharge <= 350: Flowserve Pump
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 6 of 56 flowserve.com HAZARDOUS LIQUIDS When the pump is handling hazardous liquids
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 7 of 56 flowserve.com 1.6.4.2 Marking An example of ATEX equipment marking is shown
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 8 of 56 flowserve.com 1.6.4.5 Preventing sparks To prevent a potential hazard from
LNN, LNNV, LNNC USER INSTRUCTIONS ENGLISH 71569074 06-14 Page 9 of 56 flowserve.com 1.8 Specific machine performance For performance parameters s
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