Grundfos Multifit MD Series Installation And Operating Instructions Manual Download Page 1

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Multilift MD, MLD

Installation and operating instructions

GRUNDFOS

INSTRUCTIONS

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http://net.grundfos.com/qr/i/98127059

Summary of Contents for Multifit MD Series

Page 1: ...Multilift MD MLD Installation and operating instructions GRUNDFOS INSTRUCTIONS Other languages http net grundfos com qr i 98127059...

Page 2: ...clamps DN 50 for diaphragm pump connection or inlet DN 50 1 x gasket kit DN 80 4 bolts M16 nuts and washers galvanized 1 Symbols used in this document 2 2 Scope of delivery 2 2 1 MD 2 2 2 MLD 2 3 Gene...

Page 3: ...pening 6 Vertical inlet DN 150 seal is accessory 7 Fixing point 8 Non return butterfly valve DN 80 with inspection cover and drain screw to lift up the valve flap 9 Discharge adapter flange DN 80 to p...

Page 4: ...ong period of storage the pumps must be inspected before they are started up again Make sure that the impellers can rotate freely 5 Product description The MD and MLD Multilift lifting stations are de...

Page 5: ...or is made of cast iron The pump has a mechanical shaft seal See more technical data in section 12 Technical data Single phase motors are protected by a thermal switch in the windings and run via a ca...

Page 6: ...vel sensor When the first start level is reached the first pump will start and when the liquid level has been lowered to the stop level the pump will be stopped by the controller If the liquid level r...

Page 7: ...water pipe burst an alarm will be indicated by the controller connecting a piezoresistive pressure sensor PCB pre assembled connecting an external alarm reset connecting the thermal switch of the moto...

Page 8: ...in section 6 1 Description of display Operating buttons pos 2 The level controller is operated by the operating buttons placed under the display The functions of the operating buttons are described in...

Page 9: ...free changeover NO NC contacts with max 250 V 2 A Attention Connect these terminals to supply network potential or low voltage but do not mix the two X11 9 Terminals for high water level alarm X10 10...

Page 10: ...ible if the level controller detects a fault and the fault will be written into the fault log After you have entered the fault log the symbol will switch off See section 6 3 Information menu Setup The...

Page 11: ...pump 1 The symbol is visible when pump 1 is running and flashes when pump 1 has a fault In case of fault it can be combined with other symbols or fault codes in the display Pump operation and pump fa...

Page 12: ...sing the button Enter values or select settings from a list by means of the buttons and Save the settings by pressing the button See also fig 12 The following settings can be made start level rated cu...

Page 13: ...enu by means of the buttons and Select the desired menu item by pressing the button See also fig 13 In the information menu the following data can be read fault indications operating hours number of s...

Page 14: ...is functioning A leaky non return valve can allow liquid in the outlet pipe to flow back in to the collecting tank Remove any blockage from the venting system see fig 33 F012 Operating time exceeded...

Page 15: ...button The fault indication will be reset when the fault has disappeared has been removed or the ON OFF AUTO switch has been set to OFF position You can get an overview of faults in the fault log in i...

Page 16: ...g 15 Installation sketch Multilift MD Fig 16 Installation sketch Multilift MLD TM05 1864 3811 4 7 2 1 6 5 3 TM05 1865 3811 3 4 6 5 Pos Accessories Product number 1 Socket seal DN 100 97726942 2 Socket...

Page 17: ...ves accessory must be placed outside the building If the wastewater is discharged into a collecting line this collecting line must have a filling ratio of at least h d 0 7 The collecting line must be...

Page 18: ...et pipe and lifting station to avoid inflow during maintenance and service We recommend an easy to handle PVC isolating valve Fig 22 Installation of isolating valve TM05 0336 1011 Caution Multilift MD...

Page 19: ...n the discharge side To facilitate servicing of the diaphragm pump we recommend fitting a 1 1 2 isolating valve to the tank port 4 Fix the tank to the floor Fig 25 Fixing point for fixation of tank to...

Page 20: ...ts for lifting stations except on a houseboat or pontoon boat The preset value is 0 Alarm delay High temporary inflow can cause short time high level alarm This situation may arise when a backwash fil...

Page 21: ...diagram three phase Multilift MD MLD 12 3 4 and MD MLD 15 3 4 Fig 29 Wiring diagram three phase Multilift MD MLD 22 3 4 with contactors Fig 30 Wiring diagram three phase Multilift MD MLD 24 3 2 MD ML...

Page 22: ...hat the cable entry is watertight and that the cables are not bent sharply and or pinched Pump parts Remove eight screws and dismantle the pump from the tank and check that the vent hole of the pump h...

Page 23: ...Lifting eye Fig 32 Top of slotted motor shaft Fig 33 Vent holes in pump housing and collecting tank Fig 34 Alignment marks on tank and pump flange 10 3 Electrical maintenance Check the gasket of the L...

Page 24: ...ift MD MLD Fig 35 Removing the level sensor 10 5 Contaminated lifting station or components If Grundfos is requested to service the lifting station Grundfos must be contacted with details about the pu...

Page 25: ...range All pumps are started and high level alarm is on a Discharge valves are not all opened Open all discharge isolating valves b There is a blockage in the tank or pump Remove blockage c The pump v...

Page 26: ...ngs NBR rubber Controller Voltage variants rated voltages 1 x 230 V 3 x 230 V 3 x 400 V Voltage tolerances for LC 221 10 6 of rated voltage Mains frequency for LC 221 50 60 Hz Supply system earthing F...

Page 27: ...Appendix 27 Appendix 1 Fig A Dimensional sketches MD TM05 0441 1011...

Page 28: ...Appendix 28 Fig B Dimensional sketches MLD TM05 0442 1011...

Page 29: ...53 428 5005 Korea GRUNDFOS Pumps Korea Ltd 6th Floor Aju Building 679 5 Yeoksam dong Kangnam ku 135 916 Seoul Korea Phone 82 2 5317 600 Telefax 82 2 5633 725 Latvia SIA GRUNDFOS Pumps Latvia Deglava b...

Page 30: ...splayed in this material including but not limited to Grundfos the Grundfos logo and be think innovate are registered trademarks owned by The Grundfos Group All rights reserved 2018 Grundfos Holding A...

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