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ACORN ENGINEERING FIELD SERVICE

TOLL FREE

 800-743-8259 • 

LOCAL

  626-855-4866 • 

FAX

 626-855-4863

INSTALLATION, OPERATIONS & MAINTENANCE MANUAL

Please visit 

www.acorneng.com

for most current specifications.

Programming Instructions 

(Flow Time Adjustment) 

Programable Piezo Pushbutton

 

1 second timing mode: 

Each push of the button adds 1 second to the total timing cycle.

To program the piezo pushbutton, you will need to be able to see the back of the piezo pushbutton. 

In order to start the programming the piezo pushbutton, the button must be powered down. Disconnect the red power 
cable and wait 20 seconds, then reconnect the red power cable. 

To move on to the 

20 sec timing mode

, pause and wait for the LED to flash 3 times, now you are in the 20 sec timing 

mode and each time the button is pushed the LED will flash, adding 20 sec to the total timing cycle. After programing 
is complete, pause and wait for the LED to flash 4 times and then 5 times, which completes the programming.

 

Each timing mode (1 sec, 5 sec or 20 sec timing mode) can be sequenced up to 100 times, that is 

 

the number of times, the button can be pushed, to increase the total timing cycle in each timing mode.

To move on to the 

5 sec timing mode

, pause and wait for the LED to flash 2 times, now you are in the 5 sec timing 

mode. Each time the button is pushed the LED will flash, adding 5 sec to the total timing cycle.

THE TIME SETTINGS PROGRAM USES 3 DIFFERENT TIMING MODES:

 

5 second timing mode:

 Each push of the button adds 5 seconds to the total timing cycle.

 

20 second timing mode:

 Each push of the button adds 20 seconds to the total timing cycle.

Prevision must be made to access the back of the piezo pushbutton. There is an LED on the back of the piezo 
pushbutton under a layer of transparent epoxy, used as a programming indicator light.

As soon as the cable is reconnected the LED will start flashing, it will flash 4 times, then stays on for 3 seconds. 
During the 3 second period, push the piezo button once, the LED will go out, now you are in the 

1 sec timing mode

 

and each time the button is pushed the LED will flash, adding 1 sec to the total timing cycle. 

 

When a 

timing mode is not required

 then 

do not

 push the button and wait for the next timing mode.

NOTE: This programming procedure moves along rapidly, there is 
only about 2 or 3 seconds between programming operations.

The Button is factory set an 8 sec. timing cycle, if an 8 sec. cycle is adequate, then 

no 

programming adjustment 

is required. 

NOTE: Read the entire document before 
trying to program the piezo pushbutton.

Part #: 6215-372-000

Page 17 of 27

®

MERIDIAN  3753-LHL

Revised: 03/05/19

Summary of Contents for MERIDIAN 3753

Page 1: ...Wall Anchors and Anchoring Hardware and Appropriate Tools 10 10 Count Fixture Wall Anchors and Anchoring Hardware and Appropriate Tools Teflon Tape ACORN ENGINEERING FIELD SERVICE TOLL FREE 800 743 82...

Page 2: ...00 psi 6 89 bars maximum Maximum temperature is 130 F 54 4 C Maximum outlet temperature is recommended is 105 F 40 6 C Valve assembly must be drained prior to being subjected to freezing temperatures...

Page 3: ...DIAN 3753 LHL Please visit www acorneng com for most current specifications Page 3 of 27 ACCESSIBILITY COMPARISONS Part 6215 372 000 ADA ages 6 thru 12 ADA Adult 133 8 5 22 34 Rim Max ADA PROFILE 3 14...

Page 4: ...626 855 4866 FAX 626 855 4863 INSTALLATION OPERATIONS MAINTENANCE MANUAL MERIDIAN 3753 LHL Please visit www acorneng com for most current specifications Page 4 of 27 DIMENSIONAL DATA 22 90 15 30 30 37...

Page 5: ...t Mounting Slots 8 Places B Supply Stub Outs with Stops for Valve 1 2 NPT Hot Cold Supply Inlets D 120VAC 60 Hz 3A Max GFCI Protected Electrical Receptacle E Wall Anchoring for 219 Diameter x 3 8 Long...

Page 6: ...e Bracket Mounting Slots 8 Places C Waste Outlet for 1 1 2 O D P Trap Provided F Valve Mounting Area D 120VAC 60 Hz 3A Max GFCI Protected Electrical Receptacle B Supply Stub Outs with Stops for Valve...

Page 7: ...er x 1 Long Angle Bracket Mounting Slots 8 Places B Supply Stub Outs with Stops for Valve 1 2 NPT Hot Cold Supply Inlets F Valve Mounting Area C Waste Outlet for 1 1 2 O D P Trap Provided D 120VAC 60...

Page 8: ...equirement portion Place deck on wall mounted angle brackets 1 and align the remaining mounted angle brackets 3 with installed wall anchors Fasten to wall loosely and proceed to step C C D E NOTE It m...

Page 9: ...tinuous waste assembly will require field cutting and fitting by the installer Grid Strainer w 1 1 2 16 UNE Threads Rubber Gasket Flat Fiber Washer 1 1 2 16 UNI Rough Chrome Brass Jam Nut 1 1 2 16 x 1...

Page 10: ...site to ensure there are no leaks 4 To disconnect the tube from the fitting ensure that the water supply is off Push collet square towards the push in fitting body and hold While holding the collet in...

Page 11: ...hot and cold water supplies If any leaks are observed hand tighten connections as necessary to stop leaks before proceeding 5 Turn on fixture and allow water to flow for 2 minutes Measure water temper...

Page 12: ...cets soap dispensers or other accessories prior to wall mounting Position bridge enclosure 5 over combined waste and accessory tubing and secure to wall All wall anchors and anchoring hardware provide...

Page 13: ...ke short circuit on red wires See DETAIL A 2 Connect power supply to sensor Red light should be flashing 4 Move hand to desired sensing distance See DETAIL B 5 Hold hand at desired sensing distance un...

Page 14: ...remove access panel by removing 4 10 32 x 3 4 screws from front of fixture using allen head bit provided socket driver by others Replace access panel when finished SO BAT Sensor Operation Battery Pow...

Page 15: ...t 1 4 Min Ferrule Nut H Hand Operated 1 8 O D AIR TUBE 1 4 O D WATER LINE Leave a minimum 1 4 of polyethylene tubing through the Ferrule Nut on the pushbutton assembly This is necessary to ensure prop...

Page 16: ...Page 16 of 27 Anti Rotation Pin Rubber Gasket Washer Black end of Check Valve Direction of Flow 3 8 Nut 3 8 O D Tube Mounting Bracket Install soap reservoir to wall inside trap enclosure using mounti...

Page 17: ...pause and wait for the LED to flash 2 times now you are in the 5 sec timing mode Each time the button is pushed the LED will flash adding 5 sec to the total timing cycle THE TIME SETTINGS PROGRAM USE...

Page 18: ...or the LED to flash 2 times You are in the 5 sec timing mode immediately push the button 1 push equals 5 sec added to the total timing cycle LED turns off You are in the 1 sec timing mode immediately...

Page 19: ...NSTALLATION OPERATIONS MAINTENANCE MANUAL Please visit www acorneng com for most current specifications BLACK RED BLACK SOLENOID CABLE RED POWER CABLE PROGRAMMING INDICATOR LED LIGHT TRANSPARENT EPOXY...

Page 20: ...sensor Replace sensor Stops or water main closed Bad sensor to solenoid connection Debris or scale in solenoid assembly Remove solenoid pull out plunger and spring and clean with scale remover soluti...

Page 21: ...ge Replace servomotor seat Servomotor plate or diaphragm is obstructed Servomotor timer assembly is damaged Replace servomotor timer assembly Probable Cause Solution Valve riser tubing is crimped Stra...

Page 22: ...soft bristle material brush Soft cloth as used on automobile finishes RECOMMENDED CLEANING SOLUTIONS Hand dishwashing liquid soft water solution Mild soap soft water solution 3M Stainless Steel Cleane...

Page 23: ...tions Page 23 of 27 Part 6215 372 000 Stainless Steel Hex Head Cap Screw 20 x 3 4 Long 0206 008 000 0332 004 000 20 x 1 Thick Fender Washer COMPONENTS REPAIR PARTS Description Part No Diagram MOUNTING...

Page 24: ...000 HLL Right Side Low Side Enclosure 6215 126 199 6215 116 199 HLR Right Side High Side Enclosure COMPONENTS REPAIR PARTS Description Part No Diagram ENCLOSURES Bridge or Transition 6215 108 199 621...

Page 25: ...25 of 27 Part 6215 372 000 COMPONENTS REPAIR PARTS Description Part No SPOUTS Diagram Push Button Assembly Stern Easy Remote Actuated Spout 2993 410 000 2566 270 001 Blank Piezo Pushbutton 0709 067 0...

Page 26: ...OMPONENTS REPAIR PARTS Description Part No VALVE Diagram Optional 3 Station Hand Operated Single Temp Metering Valve Assembly Optional 3 Station 9VDC Solenoid Single Temp Valve Assembly Optional T P 3...

Page 27: ...mpany within reasonable period after receipt of the product Where claims for defects are made the defective part or parts shall be delivered to the company prepaid at City of Industry California for i...

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