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MARLO NXT2 Series Installation, Operation And Maintenance Manual

Commercial water conditioner, system 4 - single metered 1”
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SYSTEM 4 – SINGLE METERED
COMMERCIAL WATER CONDITIONER
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
COMPLETE FOR FUTURE REFERENCE:
MODEL NO:
SERIAL NO:
DATE INSTALLED:
DEALER:
8-637
MGT 30M–300M
1" NXT2 SERIES
Standard Image
Equipment appearance may differ.

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Summary of Contents for MARLO NXT2 Series

  • Page 1 MGT 30M–300M SYSTEM 4 – SINGLE METERED 1” NXT2 SERIES Standard Image Equipment appearance may differ. COMMERCIAL WATER CONDITIONER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL COMPLETE FOR FUTURE REFERENCE: MODEL NO: SERIAL NO: DATE INSTALLED: DEALER: 8-637...
  • Page 2 MGT 30M–300M NXT2 1” SINGLE AFTER PRIOR TO Inspection Requirement Media Loading Media Loading Prior to Loading Media 1. Inspect condition of upper distributor piping. Verify fittings are tight and positioned as shown. 2. Inspect condition of strainers, laterals and hub through top or side access ports.

  • Page 3: Table Of Contents

    MGT 30M–300M NXT2 1” SINGLE TABLE OF CONTENTS SYSTEM INFORMATION Product Warranty ................................1 General Arrangement Drawings ...........................2 Dimensional Data .................................3 Specification Table ................................4 INSTALLATION General Information ...............................5 Brine Tank Installation ..............................6 Mounting Water Meter ..............................7 Power Supply Installation ..............................8 Connection Piping Installation ............................8 OPERATION Timer Display Features ..............................9 System Operation ...............................10...

  • Page 4: System Information

    MGT 30M–300M NXT2 1” SINGLE SYSTEM INFORMATION COMMERCIAL AND INDUSTRIAL PRODUCT WARRANTY Manufacturer warrants all water treatment products manufactured and/or distributed by it to be free from defects in materials and workmanship for a period of one (1) year from installation or 18 months from the date of shipment whichever comes first.

  • Page 5: General Arrangement Drawings

    MGT 30M–300M NXT2 1” SINGLE SYSTEM INFORMATION...

  • Page 6: Dimensional Data

    MGT 30M–300M NXT2 1” SINGLE SYSTEM INFORMATION DIMENSION CHART TANK SIZE INLET SIZE LENGTH WIDTH HEIGHT* MODEL SOFTENER BRINE (Inches) (Inches) (Inches) (Inches) (Inches) (Inches) 9x48 18x33 10x54 18x40 12x52 18x40 14x65 18x40 16x65 24x40 18x65 24x50 21x62 24x50 21x62 24x50 24x72 24x50...
  • Page 7 MGT 30M–300M NXT2 1” SINGLE SYSTEM INFORMATION SPECIFICATION CHART MODEL VALVE SIZE (IN) MAX CAPACITY (KILOGRAINS) MIN CAPACITY (KILOGRAINS) CONTINUOUS FLOWRATE (GPM) PEAK FLOWRATE (GPM) BACKWASH & FAST FLUSH (GPM) BRINE DRAW & RINSE (GPM) BRINE TANK REFILL (GPM) BACKWASH & FAST FLUSH (MIN) BRINE DRAW &...

  • Page 8: Specification Table

    MGT 30M–300M NXT2 1” SINGLE INSTALLATION INSTALLATION INSTRUCTIONS WATER SOFTENERS GENERAL INFORMATION 1. Operating pressure range is 25-100 psi. If pressures over 100 psi are encountered, a regulator must be installed. Note: The control valve will not operate correctly if feeding into an atmospheric tank. A pressure control device must be added to the outlet to maintain the minimum pressure.

  • Page 9: Brine Tank Installation

    MGT 30M–300M NXT2 1” SINGLE INSTALLATION BRINE TANK INSTALLATION The brine tank should be installed on a smooth level surface. If none is available, the tank should be placed on a smooth piece of exterior plywood and leveled by placing shims underneath the plywood. Make sure that the salt shelf inside the tank is level and that the brine well is near to vertical as possible.

  • Page 10: Mounting Water Meter

    MGT 30M–300M NXT2 1” SINGLE INSTALLATION MOUNTING WATER METER ASSEMBLY (IF UNIT IS NOT SKID MOUNTED) 1. Locate the meter. The meter may or many not have the cable attached. If not, locate the cable as well. 2. The meter must be installed in the outlet of the water softener. Refer to the General Arrangement drawing on page two (2).

  • Page 11: Power Supply Installation

    MGT 30M–300M NXT2 1” SINGLE INSTALLATION POWER SUPPLY INSTALLATION NOTE: POWER SUPPLY INCLUDES A HARNESS WITH 2 BLACK WIRES THAT CONNECT TO THE CIRCUIT BOARD. 1. Insert black and black transformer wires into 24VDC input of control. 2510/2750/2815/2850/2900 Valves: Communication Cables Hinge Mount: mount per valve model noted Wire Harness Meter Cable...

  • Page 12: Operation

    MGT 30M–300M NXT2 1” SINGLE OPERATION TIMER DISPLAY FEATURES System Network Status Master Valve Flow Time Number Indicator State Indicator LEDs Indicator of Day Display Screen Blue LED Alternates between On - Unit in Service Date, Flow Rate, and Blinking - Regeneration Queued Volume Remaining (If a regeneration is Green LED...

  • Page 13: System Operation

    MGT 30M–300M NXT2 1” SINGLE OPERATION SYSTEM OPERATION System 4 Single Unit Single Tank configuration Time Clock: No Meter Immediate: One Meter Delayed: One Meter Remote Signal Start TIMER OPERATION TIMER OPERATION DURING PROGRAMMING The timer enters the Program Mode in standby or service mode as long as it is not in regeneration. While in the Program Mode the timer continues to operate normally monitoring water usage.

  • Page 14: Initiating Manual Regeneration

    MGT 30M–300M NXT2 1” SINGLE OPERATION TIMER OPERATION SETTING THE TIME OF DAY NOTE: Set Time of Day on any unit and the rest of the units in the system will update the Time of Day automatically. 1. Press and hold the Up button for 2 seconds. The “Time” value is displayed. Press the Up or Down buttons to adjust as desired. 2.

  • Page 15: Start-Up Procedures

    MGT 30M–300M NXT2 1” SINGLE OPERATION START-UP PROCEDURES Again, make sure all plumbing is complete and tight, including drain line and brine line. Make sure all electrical components, including the communication cables (multi tank systems only) are properly installed and connected. 1.

  • Page 16: User Programming Guide

    MGT 30M–300M NXT2 1” SINGLE OPERATION USER MODE PROGRAMMING FLOW CHART 1. To navigate, press the Extra Cycle button to advance to the next value. Press the Left button to retreat to the previous value. 2. Where applicable, use the Up and Down buttons to adjust a value as desired. 3.

  • Page 17: Batch Size Calculation

    MGT 30M–300M NXT2 1” SINGLE OPERATION BATCH SIZE CALCULATION Batch size is the term used for the amount of water being softened by the water softener between regenerations. The NXT2 controller calculates this value automatically based on the values in the program. This is a simple calculation provided two pieces of information are known: Capacity of the water softener in grains (gr.) (i.e.

  • Page 18: Diagnostic Flow Chart

    MGT 30M–300M NXT2 1” SINGLE OPERATION DIAGNOSTIC MODE FLOW CHART Entering Diagnostic Mode: 1. Press and hold the Left button to enter Diagnostic Programming mode. Example: ERROR LOG 2. To navigate, press the Extra Cycle button to advance to the next ERROR LOG EMPTY Record of error events chronologically.

  • Page 19: Master Programming Flow Chart

    MGT 30M–300M NXT2 1” SINGLE OPERATION MASTER PROGRAMMING MODE FLOW CHART NOTE: Depending on current option settings, some displays cannot be viewed or set. Master Programming Mode: 1. Press and hold the Left and Down buttons simultaneously for 3 seconds to enter Master Programming mode. SYSTEM Example: SYSTEM 4...
  • Page 20 MGT 30M–300M NXT2 1” SINGLE OPERATION MASTER PROGRAMMING MODE FLOW CHART Example: LOCK WINDOW #1 Start Lock Window End Lock Window BACKWASH Example: 10 M Range: 0 - 240 M DRAW Example: 60 M Range: 0 - 240 M RAPID RINSE Example: 10 M Range: 0 - 240 M...

  • Page 21: Aster Programming Settings

    MGT 30M–300M NXT2 1” SINGLE OPERATION MASTER PROGRAMMING - SINGLE (SYSTEM 4)

  • Page 22: Flow Diagrams

    MGT 30M–300M NXT2 1” SINGLE OPERATION FLOW DIAGRAMS 1. SERVICE POSITION Hard water enters unit at valve inlet and flows down thru the mineral in the mineral tank. Conditioned water enters center tube thru the bottom distributor — then flows up thru the center tube —...
  • Page 23 MGT 30M–300M NXT2 1” SINGLE OPERATION FLOW DIAGRAMS 4. SLOW RINSE POSITION Hard water enters unit at valve inlet, flows up into injector housing and down through nozzle and throat, around the piston, down through mineral, enters center tube through bottom distributor, flows up through center tube, around piston and out through drain line.

  • Page 24: Maintenance

    MGT 30M–300M NXT2 1” SINGLE MAINTENANCE NXT2 WIRING DIAGRAM FLOW METER (FM) WIRING GROUND ( - ) POWER ( + ) SIGNAL FLECK BLACK GREEN SIGNET SHIELD BLACK CLACK BLACK WHITE AUTOTROL CLEAR BLACK...

  • Page 25: Powerhead Assembly

    MGT 30M–300M NXT2 1” SINGLE MAINTENANCE 2750 POWERHEAD ASSEMBLY...
  • Page 26 MGT 30M–300M NXT2 1” SINGLE MAINTENANCE 2750 POWERHEAD PARTS LIST Item No. Quantity Part No. Description 1 ....1 ....18697-15 ....backplate, hinged 2 ....1 ....60219-02 ....cover assy, environmental, black 3 ....1 ....60160-10 ....drive cam assy, stf, black 4 ....

  • Page 27: Nxt2 Timer Assembly

    MGT 30M–300M NXT2 1” SINGLE MAINTENANCE NXT2 TIMER ASSEMBLY (2510, 2750, 2850, 2900, 3150 & 3900 VALVES) Item No. 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 28: Control Valve Assembly With 1700 Injector

    MGT 30M–300M NXT2 1” SINGLE MAINTENANCE CONTROL VALVE WITH 1700 INJECTOR ASSEMBLY...
  • Page 29 MGT 30M–300M NXT2 1” SINGLE MAINTENANCE CONTROL VALVE WITH 1700 INJECTOR ASSEMBLY PARTS LIST...
  • Page 30 MGT 30M–300M NXT2 1” SINGLE MAINTENANCE CONTROL VALVE WITH 1700 INJECTOR ASSEMBLY PARTS LIST (continued)

  • Page 31: Brine Injector Assembly

    MGT 30M–300M NXT2 1” SINGLE MAINTENANCE 1600 BRINE SYSTEM ASSEMBLY...

  • Page 32: Plastic Inline Meter Assembly

    MGT 30M–300M NXT2 1” SINGLE MAINTENANCE 1” & 1-1/2” PLASTIC INLINE METER...

  • Page 33: Brine Tank Assemblies

    MGT 30M–300M NXT2 1” SINGLE MAINTENANCE BRINE SYSTEM FOR MGT 15M-90M TUBING KIT Item Description Part Number Number Brine Tank 18” x 33” / Black Molded Cover - MGT 30M A2042020 Brine Tank 18”x40”/Black Molded Cover - MGT 45M-90M A2042028 Brine Safety Valve Assembly 3/8”...
  • Page 34 MGT 30M–300M NXT2 1” SINGLE MAINTENANCE BRINE SYSTEM FOR MGT 120M-300M Item Description Part Number Number Brine Tank 24” x 41” w/ Holes - MAT 120M B1002039 Brine Tank 24”x50” w/ Holes - MAT 150M-300M B1002016 24” Diameter 5BW Plastic Grid Plate A2284007 Brine Valve (474) for MGT 120 B1180014...

  • Page 35: Service Assemblies

    MGT 30M–300M NXT2 1” SINGLE MAINTENANCE SERVICE ASSEMBLIES...

  • Page 36: Troubleshooting

    MGT 30M–300M NXT2 1” SINGLE MAINTENANCE TROUBLESHOOTING DETECTED ERRORS NOTE: It can take up to 30 seconds for an error to be detected and displayed. All errors on each timer in the system must be displayed before the errors can be corrected. If a communication error is detected, an Error Screen will appear.
  • Page 37 MGT 30M–300M NXT2 1” SINGLE MAINTENANCE TROUBLESHOOTING 2900 VALVE PROBLEM CAUSE CORRECTION Softener Fails To Regenerate. A. Electrical Service To Unit Has A. Assure Permanent Electrical Ser- Been Interrupted. vice (Check Fuse, Plug, Pull Chain or Switch). B. Timer Is Defective. B.
  • Page 38 MGT 30M–300M NXT2 1” SINGLE MAINTENANCE TROUBLESHOOTING 2900 VALVE (CONTINUED) PROBLEM CAUSE CORRECTION 7. Excessive Water In Brine Tank. A. Plugged Drain Line Flow Control. A. Clean Flow Control. B. Plugged Injector System. B. Clean Injector and Screen. C. Timer Not Cycling. C.
  • Page 39 MGT 30M–300M NXT2 1” SINGLE NOTES...
  • Page 40 8-637...

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