Moyer Diebel nexus N900 Installation/Operation Manual With Service Replacement Parts Download Page 1

Undercounter Dishwashers 

Issue Date: 7.26.19

Manual P/N 

0514004 Rev. -

Printed in the USA

For machines beginning with S/N W190688229 and above

Installation/Operation Manual with Service Replacement Parts

 

N900
High Temperature Wash and 
Drain with built-in booster 
and Pumped Final Rinse

 

by

Model N900

2674  N. Service Road, Jordan Station  
Ontario, Canada L0R 1S0
(905) 562-4195  Fax: (905) 562-4618 
Toll-free:  1( 800) 263-5798

Summary of Contents for nexus N900

Page 1: ...ning with S N W190688229 and above Installation Operation Manual with Service Replacement Parts N900 High Temperature Wash and Drain with built in booster and Pumped Final Rinse by Model N900 2674 N S...

Page 2: ...achine data plate is located on the right front corner of the lower panel Please have this information ready if you call for service assistance National Service Department In Canada In the USA Toll fr...

Page 3: ...PRODUCT REGISTRATION ONLINE Connect to the internet and enter the URL below to register your machine IN CANADA https www moyerdiebel com warranty registration by...

Page 4: ...el Serial Date of Installation Company Name Telephone Contact Address Address Telephone Contact Installation Company Street State or Province Zip or Postal Code FAILURE TO REGISTER YOUR PRODUCT MAY VO...

Page 5: ...ry Revision Revised Serial Number Revision Date Pages Effectivity Description 7 26 19 All W190688299 Released first edition Revision History Specifications are subject to change based on continual pro...

Page 6: ...c Replacement of fuses or resetting of overload breakers or high limits d Adjustment of thermostats or temperature controlling devices e Adjustment of clutches f Adjustments of water pressure s g Adju...

Page 7: ...Priming the Chemical Dispensing Pumps 11 Operation 14 Normal Wash Mode 14 Loading Dish Racks 15 Operational Display 17 Start up Sequence 17 Sump Fill Level 18 Wash Cycle 18 Rinse Sentry 19 AutoClean D...

Page 8: ...iv Blank Page This Page Intentionally Left Blank...

Page 9: ...the machine Compare the installation site utilities to ensure they are the correct size and location 1 The dishwasher can be installed as a free standing unit or under a counter top The typical counte...

Page 10: ...be performed by a qualified service personnel familiar with food service equipment Problems due to improper installation are not covered by the Limited Warranty The installation of the dishwasher mus...

Page 11: ...will not drain correctly if it is connected to a disposer THE DRAIN HOSE IS LOOPED AND CLAMPED AND MUST NOT BE CHANGED ALTERING THE DRAIN HOSE ROUTING MAY RESULT IN THE MACHINE S INABILITY TO DRAIN OR...

Page 12: ...n instructions may void the warranty 1 Machine is equipped with a 6ft 2m 5 8 I D drain hose The maximum drain height connection must not exceed 3ft 1m and must be vented to prevent wash tank siphoning...

Page 13: ...rain hose to a vented WYE connection DO NOT connect the flexible drain hose to a TEE fitting Fig 3 Installation Indirect Drain Connection 1 A 1 25 4mm minimum air gap must be maintained between the ou...

Page 14: ...96 NOTE L1 L2 208 230 VAC GRD SINGLE PHASE POWER CONNECTION HOW TO CONNECT 1 PHASE POWER VERY IMPORTANT 1 Check the data plate on the front of the dishwasher for the phase of the machine 2 Remove the...

Page 15: ...rvice disconnect switch lock out and tag to indicate work is being performed on the circuit Connect Power to the Main Terminal Block VERY IMPORTANT Provide a 3 feet 1 meter service loop in the power s...

Page 16: ...Main Terminal Block Cover A Fig 5 Fig 6 1 Remove the lower front dishwasher panel Fig 5 2 Remove the retaining fastener A from the main terminal block Fig 6 continued on next page Connect Power to th...

Page 17: ...making sure the cable does not touch the booster tank 5 Connect the power cable to the terminal block bracket using a suitable strain relief connector 6 Connect the power wires according to the wirin...

Page 18: ...main breaker or disconnect power switch ON 4 Press and hold the dishwasher green start switch for three seconds to activate the fill solenoid 5 Continue to hold the start switch until water enters the...

Page 19: ...ispensing pumps for water hardness and food soil types Chemical Dispensing Pumps 1 The detergent and rinse aid pumps are located at the lower left side of the machine behind the lower panel 2 Each pum...

Page 20: ...D DETERGENT PLACE THE CHEMICAL CONTAINERS AS CLOSE TO THE MACHINE AS POSSIBLE DO NOT ELEVATE THE CONTAINERS ABOVE THE FINISHED FLOOR Injection Point Locations 1 The detergent and rinse aid enter the w...

Page 21: ...are in their containers 3 Turn the dishwasher power switch ON The switch illuminates and the machine fills with water 4 Open the dishwasher door then push and hold the prime push button Fig 11 UP to...

Page 22: ...inse cycle begins at the end of the wash cycle The machine drains and refills with fresh hot water The final rinse must indicate a minimum of 180 195 F 82 92 C 9 Open the door and remove the wares whe...

Page 23: ...emove large food particles 2 Load soiled wares into the dish rack Place plates and glasses in a peg rack Place cups and bowls in an optional flat bottom rack Place utensils in a single layer in a flat...

Page 24: ...k or an optional flat bottom rack Load utensils in a single layer in a peg rack or an optional flat bottom rack Load pots and pans in an peg rack or optional flat bottom rack NEVER stack dish racks Wa...

Page 25: ...rsion parameter settings and cycle counts 1 Red thermometer indicator shows booster tank is heating 2 Wait light remains illuminated 3 Wait light indicates cycle is pending 4 Progress bar shows remain...

Page 26: ...is illuminated SUMP FILL LEVEL 1 After filling sequence is complete water level should be 1 4 to 3 8 below level of sump flange WASH CYCLE DRAIN 1 When the wash cycle is complete the machine will dra...

Page 27: ...NSE SENTRY AUTOCLEAN DRAIN 1 When machine is turned off the AutoClean screen with the status indicator is shown 2 This takes approximately 2 1 2 minutes 3 When complete open door to allow machine inte...

Page 28: ...ils do not fall into tank 3 Flush and back flush with clean water 4 Check the sump 5 Check the pump intake strainer 6 Do not scrub the interior with metal pad 7 Check the heating element for lime buil...

Page 29: ...and lower interchangeable spray arms 2 Flush the spray arms clean in a sink Be sure to flush the wash arm bearings Cleaning the wash arms USE GROVES TO LOSEN HUB FOR CLEANING USE PAPER CLIP TO CLEAN...

Page 30: ...tank sump 2 Flush the scrap screen in a remote sink making sure to back flush both side of the screen 3 Wipe the tank sump of water and debris 4 Carefully inspect the pump intake strainer This strain...

Page 31: ...ress the power switch to the ON position The machine will fill with water 11 Press and hold the Start button for one second to initiate an automatic cycle 12 When the cycle has ended open the door and...

Page 32: ...lace or repair if damaged 9 Inspect machine interior for lime build up white haze and delime if necessary Consult the chemical supplier for deliming chemicals Semi Annual Maintenance 1 Inspect the che...

Page 33: ...25 Blank This Page Intentionally Left Blank...

Page 34: ...ostics DIAGNOSTIC FEATURES To access diagnostic features 1 Turn power switch to OFF 2 Push start button 3 times 3 Machine will now step through and operate the components as shown below continued on n...

Page 35: ...27 Diagnostics...

Page 36: ...ster sensor 2 Machine will still operate at reduced capacity 3 Caution Icon will continue to show during cycles PARAMETER SETTINGS CAUTION Parameter changes must be made by qualified personnel only Th...

Page 37: ...h and hold the MENU button 2 DET setting screen will appear first 3 Push menu button to scroll through until desired parameter is reached 4 Push CHANGE button until desired setting is reached 5 Releas...

Page 38: ...30 Blank Page This Page Intentionally Left Blank...

Page 39: ...Replacement Parts Service Replacement Parts Illustrations Page Terminal Block 32 Booster 34 Chemical Pumps 36 Control Panel 38 Nozzles 40 Wash Arms 42 Panels and Door 44 Rear Plumbing 46 Sump 48 Dish...

Page 40: ...32 1 2 3 4 5 6 7 8 Terminal Block...

Page 41: ...BOX WIRING 1 2 0501411 SCREW 10 32 X 1 4 TRUSS HD 2 3 C120444 CONTACTOR 3 POLE 220VAC COIL 1 4 0509527 BLOCK TERMINAL 4 POLE 1 5 103310 LUG GROUND 1 6 0313395 BOX WIRING 1 7 107964 BUSHING STRAIN RELI...

Page 42: ...34 Booster 1 8 2 3 6 7 15 14 13 5 10 10 5 5 9 12 11...

Page 43: ...2 1 6 0508817 PLUG 1 8 HEX COUNTERSUNK SS 1 7 0512185 BOLT HEX FLANGE 1 4 20 X 3 8 SST 2 8 108954 NUT GRIP 6 32 W NYLON INSERT SST 2 9 110562 THERMOSTAT HIGH LIMIT 240 F 1 10 107417 HOSE RUBBER 1 2 I...

Page 44: ...36 Chemical Pumps 1 3 5 8 9 10 12 13 5 7 6 4 2...

Page 45: ...FFENER A R 4 0501869 STRAINER 2 5 0512985 CLAMP SS GEAR MIN 1 2 2 6 0512475 1 HOSE 4MM ID 6MM OD PVC A R 7 107417 HOSE RUBBER 1 2 ID X 84 OD A R 8 0513986 RINSE AID PUMP 1 9 100007 SCREW 10 32 X 3 8 T...

Page 46: ...38 Control Panel 1 3 3 4 7 7 5 5 8 4 2 9 11 12 13 14 6 10 10...

Page 47: ...AY BOARD 2 5 0512978 SCREW 6 18 X 1 4 PAN HEAD PHILLIPS SS 4 6 0313957 PANEL FACIA NEXUS HT 1 7 0503580 NUT 10 32 2 8 0501563 SCREW 8 X 3 8 2 9 0513985 CONTROL CIRCUIT BOARD 1 10 104624 SCREW 8 32 X 3...

Page 48: ...6 2 3 5 10 11 12 11 13 The number of dots on the nozzles correspond to the port in which it is assembled The ports are keyed for the matching nozzle Do not force a nozzle into the incorrect port 4 1 D...

Page 49: ...ASHER BEARING WASH ARM 1 6 0513995 NOZZLE 4 WASH ARM 1 7 0513996 NOZZLE 5 WASH ARM 1 8 0514000 O RING NOZZLE WASH ARM 7 9 0513991 ENDCAP WASH ARM 2 10 0513998 SHAFT WASH ARM 1 11 0514001 BEARING WASH...

Page 50: ...42 Wash Arms 1 2 3 4 5 6 7 7 8 9 6 1 10 11 13 12 12...

Page 51: ...501481 WASHER NYLTITE 4 5 100736 BOLT 1 4 20 X 3 4 HEX HEAD 4 6 0512133 O RING 2 1 8 OD X 1 3 4 ID X 3 16 1 7 0713971 ASSEMBLY WASH ARM 2 8 0512120 HOSE UPPER WASH ARM 1 9 0513967 HUB LOWER WASH ARM 1...

Page 52: ...44 Panels and Door 1 1 18 19 15 17 14 14 14 12 20 20 20 13 13 11 10 7 4 4 4 5 5 5 8 9 6 16 12 12 12 12 1 1 2 3...

Page 53: ...PUSH MOUNT 2 9 104624 SCREW 8 32 X 3 8 TRUSS HD 2 10 0313965 HANDLE DOOR 1 11 0713950 WELDMENT DOOR 1 12 0514011 SCREW ROUND HEAD HEX SS 1 4 20 X 5 16 4 13 0513966 HINGE DOOR 2 14 0514003 BRACKET DOO...

Page 54: ...46 Rear Plumbing 8 15 14 16 10 12 6 4 3 1 2 15 20 21 22 23 24 4 4 8 7 9 5 7 13 11 17 11 25 25 25 19 18...

Page 55: ...61 CLAMP DOUBLE CONDUIT 2 12 0509048 GASKET INLET CHUTE 1 13 0508867 CHUTE INLET 1 14 0509302 HOSE 5 8 ID X 1 OD PVC BRAIDED A R 15 0502563 CLAMP HOSE GEAR SST 3 4 1 1 2 16 2 16 0513849 HOSE DRAIN 1 1...

Page 56: ...48 Sump 1 2 3 4 5 7 8 9 6 10 11 12 13...

Page 57: ...1 4 0513970 HEATER WASH TANK 1 5 0513961 SUMP BOWL 1 6 201029 1 LOCKNUT 1 2 NPT NP 1 7 0501836 O RING 1 8 0512299 ADAPTOR THERMISTOR 1 9 0513310 THERMISTOR 10 K 2 WIRE ASSY 1 10 102383 WASHER 17 64 X...

Page 58: ...50 Dish Racks 1 2...

Page 59: ...51 Item Part Description Qty No No 1 101273 OPTI0NAL DISH RACK FLAT BOTTOM AR 2 101285 DISH RACK PEG AR Dish Racks...

Page 60: ...52 Electrical Schematic SINGLE PHASE 4 AMP FUSE...

Page 61: ...53 Timing Charts...

Page 62: ...54 Blank Page This Page Intentionally Left Blank...

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