AQmatic NX48 Service Manual Download Page 5

TIMER DISPLAY FEATURES

System 

Number 

Valve 

Address 

Valve State

(SBY, SRV, INI, LCK)

Flow 

Indicator 

Time 

of Day 

Shift Button

Adjusts Values to the Left

Up Button 

Adjusts Values Up 

Down Button 

Adjusts Values Down 

Volume Remaining

Status LED 

Display Screen

Time of Day alternates 

with Error Screen 

Example: Valve #, Volume 

Remaining, Errors

Diagnostic Button

View Flow Rate, Peak Flow 

Rate, Totalizer, Hours 

Between Last Two 

Regenerations, Hours Since 

Last Regeneration, Adjustable 

Volume Remaining, Valve 

Position, Send & Receive 

Errors, Software Version

Extra Cycle Button

Cycle Valve in 

Regeneration/Cycle 

Programming Steps

Figure 1 

Valve State

INI (Initializing) - 

INI will display on the screen for 30 to 

45 seconds when initializing after a power failure reset or 

programming.

RGQ (Regeneration Queued) -

RGQ indicates that the reserve 

has been entered in a delayed system and regeneration has 

been queued. When in the main screen, press the Extra Cycle 

button to toggle service (SRV) with RGQ. 

Service (SRV) - 

SRV will display when the unit is In Service.

LCK (Lock) - 

Lock will be displayed when contact closure is 

applied across the interlock terminals on the circuit board. See 

the “Network/Communication Cables & Connections” section of 

this manual.

LED Status Lights

Blue LED - 

Illuminates while the unit is In Service and no 

errors exist. The unit will always be In Service unless a 

regeneration trigger has occurred (green LED light will be 

displayed). A blinking blue light indicates the timer is In Service, 

and queued for regeneration.

Green LED - 

Illuminates when the unit is in Regeneration 

mode. A blinking green light indicates the timer is in Standby, 

and not in Regeneration.

Red LED- 

Illuminates when there is an error.

Flow Indicator

A rotating line (appearing as a rotating star shape) will display 

on the screen when flow is going through the meter.

NETWORK/COMMUNICATION CABLES 

& CONNECTIONS

Use a CAT5 Network/Communication cable.
Connect the network/communication cable to either port before 

programming.
The maximum cable length between timers is 100 feet.
Connect units together from one communication port to the 

next communication port. The order is not important.

Communication Ports

Ground

Lock Regen

Figure 2 Current NXT Circuit Board 

NXT Stager Controller     AU11 

Summary of Contents for NX48

Page 1: ...guide for service of the controller only System installation requires information from a number of suppliers not known at the time of control manufacture This product should be installed by a plumbin...

Page 2: ...ure 140 F 60 C Operate where ambient temperatures are above 32 F and below 110 F Pressure Maximum control fluid pressure 125 psi 8 5 bar Control fluid can be either water or air and must be equal to o...

Page 3: ...s flow meter sensor input Regeneration of a unit will begin after the other control has left Standby and returned to Service When the Regeneration cycle is complete the regenerated unit will enter Sta...

Page 4: ...Three Meters 1 2 3 4 5 The third tank returns to Standby as demand decreases past the second trip point Standby Flow Split Between Two Meters 1 2 3 4 6 Tanks return to Standby due to decreased total...

Page 5: ...n Service LCK Lock Lock will be displayed when contact closure is applied across the interlock terminals on the circuit board See the Network Communication Cables Connections section of this manual LE...

Page 6: ...mer is fully inoperative and any calls for regeneration are delayed The timer upon power re application resumes normal operation from the point that it was interrupted NOTE A flashing Time of Day disp...

Page 7: ...ress 2 Second Control Valve Default Valve Address 3 Third Control Valve Valve Address 4 Fourth Control Valve SYSTEM TYPE 4 SINGLE UNIT Options System 4 single unit System 5 2 4 units Parallel Interloc...

Page 8: ...Hours Minutes Seconds CYCLE 4 OFF Example Off Default 48 00 Stager CYCLE 4 00 12 00 Example Refill 00 12 00 Default 51 09 Stager Hours Minutes Seconds CYCLE 5 OFF Example 2 to 998 gpm 1 to 3997 Lpm 3...

Page 9: ...s resumed 3 Push and release the D button at anytime during diagnostic mode and the timer will exit the mode 4 Depending on the current controller programming certain displays may not be able to be vi...

Page 10: ...Start c c c c c c c c c c c c c c c c c c c c c Aux Relay Output End c c c c c c c c c c c c c c c c c c c c c Chemical Pump x x x x x x u u x x x x x x x x CPO Aux Relay Volume c c c c c c c c c c c...

Page 11: ...ould be left open or discharged to unrestricted or open drain DO NOT plug or restrict drain port 3 Connect the 1 8 NPT control ports to appropriate valves Refer to tubing schematic provided in the Plu...

Page 12: ...Note C Program Cycle 2 time to 00 00 00 for filter operation 4 POSITION FILTER Drain Line Flow Control not shown Note B Inverted Stager types will have these ports pressurized Inverted Stager to be us...

Page 13: ...DRAIN 2B UNIT B 4B 6B 1B 3B RAW WATER To Additional Tanks As Required SERVICE NOTE All valves normally open pressure to close NOTE Valve 2 for each tank is controlled by solenoid for system 7 9 14 NOT...

Page 14: ...installed at the factory is a universal type It is plumbed in an energize to close configuration when service outlet valve is normally open When a tank enters Regeneration or Standby the solenoid is...

Page 15: ...1 ES NEMA4 Solenoid 61784 Kit 48 51 ES 3214 NXT CKT Board Keypad 61764 Cable Assy Communication CAT 5 5 Meters Long 1075499 Switch Micro 40941 Wire Harness Upper Drive 1075502 Wire Harness 2nd Aux Swi...

Page 16: ...WIRING DIAGRAM 48 51 NXT STAGER CONTROLLER NXT Stager Controller AU11...

Page 17: ...No power to Control 3 Power Control 3 Communication Cable to Valve Address 3 bad or missing Connect or replace Communication Cable Detected Error No Message 4 No power to Control 4 Power Control 4 Com...

Page 18: ...AQ Matic or its affiliates All other registered and unregistered trademarks and logos are the property of their respective owners Because we are continuously improving our products and services AQ Ma...

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