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MARLO MGT 30M, Installation, Operation And Maintenance Manual

The MARLO MGT 30M Installation, Operation And Maintenance Manual is an essential guide for users of this high-quality product. This comprehensive manual covers all aspects of installation, operation, and maintenance, ensuring optimal performance. Download your free manual from manualshive.com, and unlock the full potential of your MARLO MGT 30M.

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MGT 45M – 450M 1-1/2” SINGLE NXT2

TABLE OF CONTENTS

SYSTEM INFORMATION

Product Warranty ...........................................................................................................................................................1
General Arrangement Drawing  .....................................................................................................................................2
Dimension Chart  ...........................................................................................................................................................3

Specification Chart 

 .......................................................................................................................................................4

INSTALLATION

General Information .......................................................................................................................................................5
Loading Softener  ..........................................................................................................................................................6
Mounting Control Valve  ................................................................................................................................................6
Brine Tank Installation  ..................................................................................................................................................7
Mounting The Water Meter Assembly............................................................................................................................8
Power Supply Installation ..............................................................................................................................................9

OPERATION

Timer Display Features ...............................................................................................................................................10
Timer Operation ........................................................................................................................................................... 11
Start-Up Procedures ....................................................................................................................................................13
User Programming Flow Chart ....................................................................................................................................14
Batch Size Calculations ...............................................................................................................................................15
Diagnostic Flow Chart .................................................................................................................................................16
Master Programming Flow Chart.................................................................................................................................17
Master Programming Steps .........................................................................................................................................19
Flow Diagrams ............................................................................................................................................................20

MAINTENANCE

Wiring Diagram  ...........................................................................................................................................................22
Powerhead Assembly  .................................................................................................................................................23
NXT2 Timer Assembly .................................................................................................................................................25
Control Valve Assembly ...............................................................................................................................................26
Brine Injector Assemblies  ...........................................................................................................................................28
Meters and Flow Sensors  ...........................................................................................................................................32
Brine Tank Assemblies  ...............................................................................................................................................36
Service Assemblies  ....................................................................................................................................................39
Troubleshooting ...........................................................................................................................................................40

Summary of Contents for MGT 30M

Page 1: ...LE METERED 1 1 2 NXT2 SERIES MODEL NO SERIAL NO DATE INSTALLED DEALER COMPLETE FOR FUTURE REFERENCE COMMERCIAL WATER CONDITIONER INSTALLATION OPERATION AND MAINTENANCE MANUAL 8 640 Standard Image Equipment appearance may differ ...

Page 2: ...ding procedure Improper loading of media will damage components inside media tank PRIOR TO Media Loading AFTER Media Loading SIDE VIEW Lateral Hub Distributor Tube Media Tank Softener Filter Media Gravel Media TOP VIEW Media Tank Lateral Hub 5 272 IMPORTANT PLEASE READ Warranty of this product extends to manufacturing defects The information specifications and illustrations in this manual are base...

Page 3: ...ly 8 Power Supply Installation 9 OPERATION Timer Display Features 10 Timer Operation 11 Start Up Procedures 13 User Programming Flow Chart 14 Batch Size Calculations 15 Diagnostic Flow Chart 16 Master Programming Flow Chart 17 Master Programming Steps 19 Flow Diagrams 20 MAINTENANCE Wiring Diagram 22 Powerhead Assembly 23 NXT2 Timer Assembly 25 Control Valve Assembly 26 Brine Injector Assemblies 2...

Page 4: ...foregoing warranty is exclusive and in lieu of all other expressed or implied warranty except of title including but not limited to implied warranty of merchantability and fitness for particular purpose Manufacturer will not be subject to and disclaims the following 1 Any other obligations or liabilities arising out of breach of contract or out of warranty 2 Any obligations whatsoever arising from...

Page 5: ...MGT 45M 450M 1 1 2 SINGLE NXT2 SYSTEM INFORMATION 2 ...

Page 6: ...36 18 63 60 1 5 13x54 18x40 36 18 63 90 1 5 14x65 18x40 38 18 74 120 1 5 16x65 24x40 46 24 74 150 1 5 18x65 24x50 48 24 76 210 1 5 21x62 24x50 51 24 76 240 1 5 24x72 24x50 54 24 84 270 1 5 24x72 24x50 54 24 84 300 1 5 24x72 24x50 54 24 84 450 1 5 30x72 30x50 66 30 83 Leave a minimum 24 inch clearance to the height of the unit for loading media Dimensions are for general arrangement use only ...

Page 7: ...CODE 3 3 3 4 3C 4C 5C 5C 5C 6C INJECTOR COLOR YEL YEL YEL GRN YEL GRN WHT WHT WHT RED MAX SALT DOSAGE MAX LBS 22 5 30 45 60 75 105 120 135 150 225 REFILL TIME MAX MIN 10 10 15 20 14 18 20 23 25 15 MIN SALT DOSAGE MIN LBS 9 12 18 24 30 42 48 54 60 90 REFILL TIME MIN MIN 3 4 6 8 6 8 8 9 10 6 REGENERATION WASTE VOLUME GAL 116 126 156 188 228 366 520 536 544 860 NOTES 1 FLOW RATES Continuous pressure ...

Page 8: ...cting so that no items are damaged 5 The distributor assembly has been shipped inside the fiberglass mineral tank Check to make sure that there is no damage to the riser pipe baskets laterals or hub if applicable Note A prefilter should be used on installations in which free solids are present LOCATE SOFTENER 1 Select a location that is accessible and near a floor drain that has adequate carrying ...

Page 9: ...e the normal amount of dust 5 When gravel is loaded and leveling is completed proceed as follows 6 With the distributor riser pipe still plugged add the proper amount of resin supplied for each tank through the top opening in the tank Caution The softener resin is very slippery Take care when stepping on any spilled resin Remove spilled resin from standing surface immediately 7 When loading is com...

Page 10: ...1 2 OD 18 feet of tubing is included with the system After connecting the tubing on both ends verify that the brine line tubing is not kinked or restricted Run flexible tubing not provided from the brine tanks over flow fitting to an appropriate non elevated open drain Using a bucket or hose fill brine tank with water to about 2 above salt platform Do not add salt at this time Note In the process ...

Page 11: ...rangement drawing on page two 2 The water meter has a flow arrow stamped on it The flow arrow on the meter should be pointing away from the softeners 3 After installing the meter insert the meter end of the cable into the meter dome if necessary Then run the meter cable along the piping back to the unit 1 control valve 4 Run the cable through a cable grip and into the back of the control and into ...

Page 12: ...hould be up sized to accommodate the total flow 2 Verify that the flow arrow stamped on the brass flow controller is pointing away from the control valve See installation diagram or valve manual for the location Install a drain line from backwash control assembly to an appropriate drain using a minimum of elbows Install a union near the backwash control to facilitate cleaning Do not install a valv...

Page 13: ...of Day Master Indicator Status LEDs Display Screen Alternates between Date Flow Rate and Volume Remaining If a regeneration is queued displays time until regeneration Left Button Press Navigate to previous menu option Press and Hold Enter Diagnostic menu Blue LED On Unit in Service Blinking Regeneration Queued Green LED On Unit in Regeneration Blinking Unit in Standby Red LED On Error present Down...

Page 14: ...ay can be stopped by pressing any button on the display REMOTE LOCKOUT The timer does not allow the unit system to go into Regeneration until the Regeneration Lockout Input signal to the unit is cleared This requires a contact closure to activate the unit The recommended gauge wire is 16 AWG with a maximum wire length run of 50 feet REGENERATION DAY OVERRIDE FEATURE If the Day Override option is t...

Page 15: ...Cycle Step 5 if active 7 Press the Extra Cycle button once more to advance the valve back to In Service NOTE A manually initiated or queued regeneration can be cleared by pressing and holding the Back button A system queued regeneration can only be cleared by stepping through a manual regeneration If regeneration occurs for any reason prior to the delayed regeneration time the manual regenera tion...

Page 16: ...color to Green indicating the unit is in Regeneration 8 Slowly open the manual inlet supply valve of the unit that is in backwash Do not open the valve fully Water will enter from the bottom of the mineral tank as air is expelled from the top to the drain Full flow of water could cause loss of mineral Continue to fill slowly until all air is expelled and only water flows to the drain 9 When only w...

Page 17: ...egeneration Time Press the Up and Down buttons to change the time value Holding a button down will speed through the setting Press the Extra Cycle button to proceed to the next step 4 Set Feed Water Hardness Press the Up and Down buttons to change the value of the numbers Press the Extra Cycle button to to proceed to the next number Range is 0 999 gpg After the third number is entered pressing the...

Page 18: ... grains per gallon Using our equation take 300 000 20 15 000 gallons 10 Safety factor reserve capacity 1 500 gallons 15 000 gallons 1 500 gallons 13 500 gallons batch size For immediate regeneration type meter control the meter setting would be at 15 000 gallons Commonly this value is adjusted to 90 percent of the actual value in this example 13 500 gallons to assure not over running the softener ...

Page 19: ...ce last regeneration LAST REGEN 4 H Example Installed software version SOFTWARE VERSION 13026 Example Total number of regenerations since installation NO OF REGENS 32 Example Duration between regenerations REGEN INTERVAL 3 D 21 H Example Last time programming settings were changed LAST SETTINGS CHANGE 14 H 0 M Example Record of error events chronologically ERROR LOG ERROR LOG EMPTY SUN DAILY USAGE...

Page 20: ... be displayed When regeneration has been completed the display will return to the main screen 9 If any values are changed make sure Push Settings is set to ON so the values are pushed to the other unit s Example On View settings without the ability to alter settings Off User has ability to alter settings OFF ON SETTINGS REVIEW Example English Francais Duetsch Italiano Espanol Nederlandse Portugues...

Page 21: ...PE OFF ON CONTINUOUS FLOW DETECT Example Off Alarm Based Cycle Based Time Based Volume Based Standby OFF ALARM BASED STANDBY AUXILIARY 1 Example Off Alarm Based Cycle Based Time Based Volume Based Standby OFF ALARM BASED STANDBY AUXILIARY 2 OFF ON SAVE AS NON FACTORY Example Off Delayed Enter Code Time Based OFF DELAYED TIME BASED LOCK SETTINGS ON OFF PUSH SETTINGS END PIPE SIZE inches GENERIC FLO...

Page 22: ...MGT 45M 450M 1 1 2 SINGLE NXT2 OPERATION 19 MASTER PROGRAMMING STEPS SINGLE SYSTEM 4 2850 ...

Page 23: ... and out the outlet of the valve 2 BACKWASH POSITION 3 BRINE POSITION Hard water enters unit at valve inlet flows through piston down center tube through bottom distributor and up through the mineral around the piston and out the drain line Hard water enters unit at valve inlet flows up into injector housing and down through nozzle and throat to draw brine from the brine tank brine flows down thro...

Page 24: ...ttom distributor flows up through center tube around piston and out through drain line 2 RAPID RINSE POSITION 3 BRINE TANK FILL POSITION Hard water enters unit at valve inlet flows directly from inlet down through mineral into center tube bottom distributor and up through center tube around piston and out through the drain line Hard water enters unit at valve inlet flows up through the injector ho...

Page 25: ...22 NXT2 WIRING DIAGRAM VDM VDM VDM IMPORTANT DO NOT USE P18 TO POWER NON PENTAIR DEVICES USE AUX1 AUX2 INSTEAD FLOW METER FM WIRING GROUND POWER SIGNAL FLECK BLACK RED GREEN SIGNET SHIELD BLACK RED CLACK BLACK RED WHITE AUTOTROL CLEAR RED BLACK ...

Page 26: ...MGT 45M 450M 1 1 2 SINGLE NXT2 MAINTENANCE 23 2850 POWERHEAD ASSEMBLY 22 52 12 21 13 44 16 14 15 14 17 16 46 25 16 26 1 42 23 46 2 11 4 3 5 6 7 10 19 18 6 11 43 9 8 32 24 45 47 48 ...

Page 27: ...ch 8 32 X 5 16 24 1 40941 Wire Harness Upper Drive 25 1 17421 Plug 1 20 Hole Heyco 2733 26 2 41581 Plug Hole 125 Dia White 27 1 60217 02 Cover Assy 2900 Lower Black Environmental 28 1 18626 Spacer Indicator 29 1 18746 Bearing Connecting Rod 30 2 11224 Screw Hex Hd 5 16 18 X 5 8 Ss 31 1 10250 Ring Retaining 32 7 10872 Screw Hex Wsh 8 32 X 17 64 33 1 18709 Backplate Lower 34 1 11381 Pin Roll 2900 39...

Page 28: ...2 MAINTENANCE 25 NXT2 TIMER ASSEMBLY 2510 2750 2850 2900 3150 3900 VALVES Item No QTY Part No Description 1 1 62115 Timer Assy NXT2 Service Assemblies 2 1 62120 Control Panel Assy NXT2 Programmed 3 1 40941 Wire Harness Upper Drive ...

Page 29: ...MGT 45M 450M 1 1 2 SINGLE NXT2 MAINTENANCE 26 2850 CONTROL VALVE WITH 1700 INJECTOR ASSEMBLY 26 25 23 24 OPTIONAL ...

Page 30: ...n Assy 2850 Piston Assy NHWBP 1600 60114 03 Piston Assy 2850 Piston 60129 30 Seal and Spacer Kit 2850 Plastic Spacers 559 PE Seals 26 61415 Adapter Assy Sidemount 2850 2900 BSP Not Shown 2850 2900 NPT 61415 20 Adapter Assy Sidemount 1 60366 00 DLFC 1 inch NPT Blank 1 1 2 inch 2850 2900 9500 Do not use O ring if control is side mounted 1 17996 Disperser Air Injector 1 19608 15 Disperser Commercial ...

Page 31: ...Ring 009 1 12748 Brine Valve Body Assy 1600 w Quad Ring 1 12552 02 Brine Valve Stem 1600 with seat 1 12626 Seat Brine Valve 1 11982 O ring 016 1 60020 25 BLFC 25 GPM 1600 19 20 1 60020 50 BLFC 50 GPM 1600 1 60020 100 BLFC 1 0 GPM 1600 2 10692 Screw Slot Hex Hd 10 24X 18 8 Stainless Steel 1 11893 Cap Injector SS 1 10229 Gasket Injector Cap 1600 1 10227 Screen Injector 1 10913 000 Nozzle Injector 00...

Page 32: ...t Injector 0 PVC Grey 12974 1 Throat Injector 1 PVC Grey 12974 2 Throat Injector 2 PVC Grey 12974 3 Throat Injector 3 PVC Grey 12974 4 Throat Injector 4 PVC Grey 10226 0 Throat Injector 0 Stainless Steel 10226 1 Throat Injector 1 Stainless Steel 10226 2 Throat Injector 2 Stainless Steel 10226 3 Throat Injector 3 Stainless Steel 10226 4 Throat Injector 4 26 Upflow Only 60480 01 Injector Assy 1600 1...

Page 33: ...MGT 45M 450M 1 1 2 SINGLE NXT2 MAINTENANCE 30 1700 BRINE SYSTEM ASSEMBLY 28 29 ...

Page 34: ...4790 Brine Valve Body 1 12550 Quad Ring 009 1 15310 Spring Brine Valve 1 10250 Retaining Ring 1 15517 Guide Stem 1 15415 Fitting Insert 1 2 inch Tube 3 15414 Nut 2900 w Sleeve 1 15413 Fitting Elbow Male 1 2T x 3 8 NPT 1 15416 Tube Brine 2900 2750 1 16460 Tube Brine 2850 2900s 1 41447 Tube Brine 2900s U F 1 42183 Tube Brine 1700 2850s 1 14805 Gasket Injector Body 1600 1700 1 17777 Body Injector 170...

Page 35: ...or Assy 3 4 BSP Plastic w O ring 18 3 42241 01 Connector Assy 1 1 2 NPT Plastic w O ring 19 3 42241 11 Connector Assy 1 1 2 BSP 61560 06 Meter Assy 1 1 4 1 1 2 INLN SWT ELEC PLAS SWT Nipples TURB PLAS w o Nipples TURB 61560 01 Meter Assy 1 INLN NPT ELEC PLAS PLAS Nipples TURB 61560 02 Meter Assy 1 INLN BSP ELEC PLAS PLAS Nipples TURB 61560 03 Meter Assy 1 1 4 INLN NPT ELEC PLAS PLAS Nipples TURB 6...

Page 36: ...ntrols 1 44025 Union 1 1 2 inch BSP Optional on models with electronic controls Stainless Steel NPT Standard Range Meter Assy 1 1 2 inch Inline Stainless Steel NPT Extended Range Meter Assy 1 1 2 inch Inline Stainless Steel BSP Standard Range Meter Assy 1 1 2 inch Inline Stainless Steel BSP Extended Range 4 1 19791 Meter Cable Assembly 19791 02 19791 04 19791 05 1 3 2 Meter Cable Assembly 28 inch ...

Page 37: ...ter Make Sure The Arrow On The Meter Body Is Going The Same Direction As The Water Flow This Water Meter Should Not Be Used As The Primary Monitoring Device For Critical Or Health Effect Applications Operating Pressures 20 Psi Minimum 125 Psi Maximum Operating Temperatures 40 F Minimum 110 F Maximum The Meter Can Be Installed In Either Horizontal Or Vertical Applications 1 2 3 5 4 6b B indicates B...

Page 38: ... SETTINGS TEE GALVANIZED TEE PVC SADDLE IRON 1 213 352 1 1 4 128 177 1 1 2 94 118 2 59 67 54 2 1 2 43 38 3 27 23 K FACTOR TABLE SIGNET 2536 Pulses per Gallon ITEM NUMBER PART NUMBER DESCRIPTION 1 A2296001 Flow Sensor 2 A2456004 Rotor Paddle 3 A2294012 Tee Install 1 Galv A2294002 Tee Install 1 1 4 Galv A2294003 Tee Install 1 1 2 Galv A2294004 Tee Install 2 Galv 4 A2295001 Saddle 2 1 2 Iron A2295002...

Page 39: ...alve Assembly 474 w Aircheck MGT 45M 90M B1179005 3 5 Grid Plate Plastic MGT 45M 90M A2284002 6 Grid Extension Plastic MGT 60 90 A2215007 4 Slotted Brine Well 4 x 36 MGT 45M 90M A2071003 5 4 Brine Well Cap A2072003 6 1 2 Overflow Elbow w Nut A2250003 7 3 8 Tubing Kit B1020001 8 Complete Brine Tank Assembly for MGT 45M B1300023 Complete Brine Tank Assembly for MGT 60M 90M A2042064 TUBING KIT ...

Page 40: ...4 1 2 Overflow Elbow w Nut A2250003 5 5 x 46 Drilled Brine Well B1015008 6 5 Red Cap plug A2072001 7 1 1 2 SDR or SCH40 DWV Pipe A2275007 8 1 2 Poly Insert A2476001 9 1 2 x 3 8 Black Poly Tubing A2165002 10 Complete Brine Tank Assembly for MGT 120M 10 Shelf Height B1295015 Complete Brine Tank Assembly for MGT 150M 13 Shelf Height B1295016 Complete Brine Tank Assembly for MGT 180M 15 Shelf Height B...

Page 41: ...1015005 3 Brine Valve Assembly 16 1 4 x 24 B1042007 4 5 Red Cap plug A2072001 5 1 2 Overflow Elbow w Nut A2250003 6 30 Plastic Top Bottom Grid Plate A2284010 7 1 1 2 SDR or SCH40 DWV Pipe A2275007 8 1 2 Poly Insert A2476001 9 1 2 x 3 8 Black Poly Tubing A2165002 10 Complete Brine Tank Assembly for MGT 450M B1141009 4 5 1 6 3 7 8 9 2 10 BRINE SYSTEM MGT 450M ...

Page 42: ...MGT 45M 450M 1 1 2 SINGLE NXT2 MAINTENANCE 39 SERVICE ASSEMBLIES 60105 60129 A2475002 Stuffer Assy 2850 9500 16516 A2474002 Puller Tool Assy 2850 9500 17623 A2423002 Silicone 2 4 oz Tube 16174 ...

Page 43: ...r Error Correction Error Valve Count Mismatch Number of NXT2 detected does not match selected system type in Master Programming Push correct valve settings in Master Settings Motor Stall No Changes Detected in the Optical Sensor for 6 Seconds The motor is on but no encoder pulses are detected within a given duration while homing Check the P11 connection and trigger a manual regeneration Motor Run ...

Page 44: ...Sure Distributor Tube Is Not Cracked Check O Ring And Tube Pilot G Replace Seals and Spacers And Or Piston H Check Drive Motor And Switch 3 Unit Used Too Much Salt A Improper Salt Setting B Excessive Water in Brine Tank A Check Salt Usage and Salt Set ting B See Problem No 7 4 Loss Of Water Pressure A Iron Buildup In Line To Water Con ditioner B Iron Buildup in Water Conditioner C Inlet of Control...

Page 45: ...oftener Fails To Draw Brine A Drain Line Flow Control Is Plugged B Injector Is Plugged C Injector Screen Plugged D Line Pressure Is Too Low E Internal Control Leak F Service Adapter Did Not Cycle A Clean Drain Line Flow Control B Clean Injector C Clean Screen D Increase Line Pressure To 20 P S I E Change Seals Spacers and Piston Assembly F Check Drive Motor And Switches 9 Control Cycles Continuous...

Page 46: ...MGT 45M 450M 1 1 2 SINGLE NXT2 43 NOTES ...

Page 47: ...MGT 45M 450M 1 1 2 SINGLE NXT2 44 NOTES ...

Page 48: ...8 640 ...

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