Installation & Service Manual
Contents
1. Non refrigerated produce cases are called Dry cases They are used to display potatoes dry onions bananas avocados and other products which don t need refrigeration These cases can also be used with a bed of cracked ice to display perishables Refrigerated produce cases displays produce products that require refrigeration The refrigeration coil is below the display and fans are used to circulate air through the case display This moving air will pick up moisture from unwrapped produce and carry it to the coil Itis necessary to replace this moisture by using a water spray several times during the day At night the produce should be covered wih a wet cloth The alternate to Sprinkling is to wrap the produce October 2004 Installation amp Service Manual N2PSSC In order to maintain case air flow the return air duct must not be blocked by product An important aid to improve air circulation is to use air deflectors below the elevated screens in the case These deflectors will direct the air flow into the display and prevent cool air from short circuiting the display Deflectors are furnished with hump screen option See illustration above Produce Handling Chart Ideal Storage Conditions Display Rack Care Temperature Relative Sell Quickly Refrigerate Sprinkle Produce CF Humidity 1 2 days 40 F with Water Special Notes Apples 30 32 85 95 Helpful No advantage Avoid bruising Apricots 31 32 85 90 Ye2. SERIES Installation amp Service Manual N2PSSC SELF CONTAINED MOBILE PRODUCE MERCHANDISERS Medium Temperature Refrigerated Display Cases This manual has been designed to be used in conjunction with the General UL NSF Installation amp Service Manual Save the Instructions in Both Manuals for Future Reference This merchandiser conforms to the American National Standard Institute amp NSF International Health and Sanitation standard ANSI NSF 7 2003 PRINTED IN Specifications subject to REPLACES ISSUE PART IN U S A change without notice EDITION 12 01 DATE 10 04 no 9037178 REV A Tyler Refrigeration Niles Michigan 49120 N2PSSC Tyler Refrigeration CONTENTS Page Specifications N2PSSC Specification Sheets 4 Pre Installation Responsibilities See General UL NSF I amp S Manual Installation Procedures Carpentry Procedures 5 Electrical Procedures 0 0c cece eee eee 5 Electrical Considerations 3 4 9993 F3 EE A EXE X A EA NX 5 Defrost Information 0 0 0 ene 5 Defrost Control Chat d aie eod cine siero 5 Wiring Diagrams seller RETE eine E 5 N2PSSC Domestic amp Export 50Hz Case Circuits 6 Cleaning and Sanitation See General UL NSF I amp S Manual Component Removal and Installation Instructions for Cleaning 7 Optional Shelves and Shelf Brackets 0 cece eee 7 BOUOM ays adea Sra REPE RUE wee week d Eq Nod eh 7 FIONA DUC
3. temperature control 2 Refrigerated section Shelves overloaded Make sure items do not block the is too warm blocked air flow air flow Case fans not operating Check terminal block connections 3 Noisy operation Loose baffles Tighten or brace baffles Tubing contacting cabinet Move tubing or other tubing Cabinet not level Level cabinet 4 Frostor ice on Defrost clock doesn t work Check electrical conections Have evaporator coil unit serviced by a qualified service technician 5 Water dripping from Drain cap not properly Tighten or reinstall drain cap case drain installed Anti Sweat Heater Replacement WARNING Shut off or disconnect power supply to case before changing an anti sweat Electrical power from wire ends could damage other components and or cause personal injury or death 1 Remove screws 1 and upper rear riser trim 2 from top of case 2 Disconnector cut the defective anti sweat wires 3 from the case wires 3 Remove and replace the aluminum tape 4 and defective anti sweat wire 3 from the back of rear riser support trim 5 4 Reconnect the anti sweat wires 3 to case wires and reinstall the rear riser trim 2 with screws 1 5 Restore electrical power to the case October 2004 Page 11 N2PSSC PARTS INFORMATION Cladding and Optional Trim Parts List Item Description Screw Rear Riser End Trim MB Bumper Retainer Handrail Color Band Painted Bumper Upr Frt Cladd
4. keep dry Cover cut melons with transparent film Remove loose wrappers keep dry Keep well ventilated Remove decayed fruit Moisten roots only Ripen at room temperature before storage Display in single or double layer on pads Shake up to aerate keep cold Remove decayed fruit Remove decayed fruit Keep out of sun Keep water off tops avoid tight packing Trim thin slice off stems and stand in cold water Keep ventilated Keep ventilated Remove decayed fruit Sell quickly refrigerate to hold Ripen in back room sort frequently Sprinkle roots only Cover cut melons with transparent film For additional information consult The Commercial Storage of Fruits Vegetables and Florist and Nursery Stocks USDA Handbook No 66 1968 The Shelf Life of Fresh Fruits and Vegetables Retail Store Display Cases USDA HT amp S Office Report No 247 October 1951 Fresh Fruits and Vegetables Handling and Care Corporate Extension Service Michigan State University October 2004 Installation amp Service Manual N2PSSC SERVICE INSTRUCTIONS Troubleshooting Self Contained Units WARNING Never work on electrically powered equipment while it is energized Electrical shock could cause personal injury and or death TROUBLE COMMON CAUSE REMEDY 1 Unit will not run Blown fuse Replace fuse Low voltage Check outlet with voltmeter Voltage should be 115V 10 Inoperative motor or Check connections
5. R DEFROSTS SETTINGS CHARGE LOW SIDE TEMPERATURE VELOCITY DEFROSTS DURATION CUT IN CUT OUT LBS CASE PSIG F FPM PERDAY TIME MIN F F N2PSSC4 N2PSSC6 BULK PRODUCE 183 400 5 tz 4 18 34 39 NA 975 Y Air velocity measured 1 hour after defrost at the discharge air duct using an ALNOR JR velometer with a scoop FOR SPECIFIC COMPRESSOR SIZING AND OR LINE SIZING INFORMATION REFER TO THE GOLD AND OR BUFF SECTIONS IN THE TYLER SPECIFICATION GUIDE Electrical Data CASE ELECTRICAL CIRCUIT One 120V Electrical Power Supply is required for this Self Contained case This 120V Power Supply runs all circuits and components in this unit Self Contained Electrical Data 120 Volt DISCHARGE AIR DRAIN PAN SELF CONTAINED COMPRESSOR ANTI SWEATS HEATER en memes uea fuone aie Te arsson scere In oo foro a7 mo e wo 14 no arssca amaren va 100 sio ves mo es mo vs so i Run Load Amperage includes the condenser fan Locked Rotor Amperage Minimum Circuit Ampacity includes condenser fan evaporator fans drain pan heater and anti sweat heaters Maximum Overcurrent Protection Self Contained Evaporator Fans 120 Volt TOTAL TOTAL MODEL LENGTH CASE STANDARD FANS ECM FANS a SATS LE ee N2PSSC FLOOR PLAN 4 Case 48 1 4 2 5 8 ET 6 Case 72 1 4 Add 1 1 2 for Standard Patch End Base with Self Contain
6. TS carnassa nea EE RAE 7 Regt Air DUCS eirs ase i ena ene minar ea FE D ee Re sc ee ee ees 7 Discharge Air Honeycomb 1 ees 7 Lower Front Panel and Air Grid 7 Lower Cladding EMPEDOCLES 7 Upper Cladding c oos aa saat titre dnte SERS eke Dt mes 8 Drain Preparation for Cleaning 0 0 cee ueeeees 8 Page 2 October 2004 Installation amp Service Manual N2PSSC Page General Information NSF Product Thermometer Installation 8 Produce Handling Tips 0 0 ce eee eee 8 Produce Handling Chart satire 9 Service Instructions Preventive Maintenance See General UL NSF I amp S Manual Troubleshooting Self Contained Units 11 Anti Sweat Heater Replacement 11 Parts Information Cladding and Optional Trim Parts List 12 Operational Parts List 0 00 cc cee ees 14 TYLER Warranty See General UL NSF I amp S Manual The following Self Contained Mobile Produce Merchandiser models are covered in this manual MODELS DESCRIPTION N2PSSC 4 4 SELF CONTAINED MOBILE PRODUCE MERCHANDISER WITH 7 5 8 NON LIGHTED TOP SHELF N2PSSC 6 SELF CONTAINED MOBILE PRODUCE MERCHANDISER WITH 7 5 8 NON LIGHTED TOP SHELF October 2004 Page 3 N2PSSC Tyler Refrigeration SPECIFICATIONS N2PSSC Self Contained Mobile Produce Merchandisers Self Contained Refrigeration amp Defrost Data DESIGN PRESSURE DISCHARGE AI
7. b grid during removal so it can be reinstalled the same way 2 Slide rear retainer plate back until the honeycomb grid sections can be removed from the top duct CAUTION Improper installation of the honeycomb grid section could result in improper air flow and or poor refrigeration 3 After cleaning replace honeycomb grid sections as they were removed and secure with the rear retainer plate and screws Lower Front Panel and Air Grid 1 Remove kickplate from kickplate supports See General UL NSF I amp S Manual 2 Lift panel up and out to remove from panel supports 3 After cleaning replace in reverse order Lower Cladding 1 Remove mounting screws from top of lower cladding 2 Lift bottom of lower cladding off top of kickplate support brackets and remove lower cladding 3 After cleaning replace in reverse order Page 7 N2PSSC Upper Cladding 1 Remove color band bumper and bumper retainer from case See General UL NSF I amp S Manual 2 Remove mounting screws from top and bottom of upper cladding and remove upper cladding 3 After cleaning replace upper cladding and remaining components in reverse order Drain Preparation for Cleaning 1 Remove kickplate and lower front panel and air grid see page 7 2 Liftup and pull off lower front panel from upper and lower panel supports 3 Remove drain cap from bottom of drain trap 4 Attach hose to threads on bottom of drain tra
8. ed Refrigeration and drainage On Off switch Electrical UL SANITATION approved in accordance with ANSI NSF 7 Front of Case CASE BTUH REQUIREMENTS are calculated to produce approximately the indicated entering air temperature with absolute maximum operating ambient limits of 75 F amp 55RH The information contained herein is based on technical data and tests that we believe are reliable and is intended for use by persons having technical skill at their own discretion and risk Since conditions of use are outside of Tyler s control we cannot assume any liability for results obtained or damages incurred through the applications of the data presented SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE Page 4 October 2004 Installation amp Service Manual INSTALLATION PROCEDURES Carpentry Procedures CAUTION Make sure case is level on flat floors This prevents self contained system problems and or premature component failure Do not move case during operation The N2PSSC models are self contained mobile cases These cases require flat and level floor areas for set up and operation Cases should only be moved when they are not in operation Electrical Procedures Self C ontained Case Circuit This self contained circuit is to be supplied by an uninterrupted protected 120V circuit The case circuit supplies power for case fans condenser unit anti sweats and drain pan heater Oct
9. ing Painted Lwr Frt Cladding Painted Screw O ON DU BW N E Lwr Base Cladding Painted m e Kickplate HM n Screw m N Kickplate Support n Ww Caster HM B Base End Trim Painted Page 12 Tyler Refrigeration N2PSSC 6 5100217 4 9046814 2 color per order 9023796 color per order 9025132 9045862 5183536 16 9045828 color per order 5183536 6 9041329 3 5207728 6 9602572 2 October 2004 Installation amp Service Manual N2PSSC October 2004 Page 13 N2PSSC Operational Parts List Case Usage Electrical Circuit Case Size Fan Motor Fan Motor Brackets Fan Bracket Plate Fan Blades 7 30 5B Opt ECM Fan Motor Opt ECM Fan Motor Brackets Opt ECM Fan Blades 7 30 5B Condensing Unit Drain Pan Heater 125W Anti S weat Heater rear riser NSF Product Thermometer Tyler Refrigeration Domestic 115 Volt 60 Hertz 6 5243498 9 Watt 5962268 9041077 9045855 9025002 8 Watt 9025005 9045855 Copeland FJ EF 0050 IAA 201 9045863 9043426 5967100 For information on operational parts not listed above contact the TYLER Service Parts Department Page 14 October 2004
10. ober 2004 N2PSSC Defrost Information See General UL NSF I amp S Manual for operational descriptions for Off Time defrost control Defrost Control Chart Defrost Defrost Defrosts Duration Term Type PerDay Min Temp Off Time 4 18 WIRING DIAGRAMS ELECTRICIAN NOTE OVERCURRENT PROTECTION 120V circuits should be protected by 15 or 20 Amp devices per the requirements noted on the cabinet nameplate or the National Electrical Code Canadian Electrical Code Part 1 Section 28 208V defrost circuits employ No 12 AWG field wire leads for field connections On remote cases intended for end to end line ups bonding for ground may rely upon the pull up bolts The following wiring diagram on page 6 will cover the N2PSSC case circuits Page 5 QGQ3qNNOseD 38 LSNW SISVO 101V ALON zeg SITONY Of0 SWNWIO30E 901 ONnouo G3193NNOO NYO D m wa NIN Sdnvoz Nn AlddNS c ZHO9 OVAOZI 1sdd HOLIMS O LOJNNOOSIG XIMOd VILLA JYIM TY A QNOB AMOLIVI Ce 2 3 2 nu LHM wa NUD IVISONYIHI ONY HOLIMS H31V3H NYd NIVNO OvAOZI 329019 INIL TOYLNOO FUNSSIYA Nao SOLON NV4 S3SNJONOO HLIM MOLOM NYJ QNOD OL LINA 30108 BOSSIUANOO IVAOZI un 382 3d H 352 9 Yad 7 SU010N NY 3 ONNOYO zs TNVd NY3 413HS iv3H NIV 398VHOSIO N2PSSC Domestic amp Export 50H
11. p Place other end of hose in drain drain trough or bucket 5 Clean and thoroughly rinse case interior and bottom tub 6 After case has completely drained remove hose and replace drain cap lower front panel and kickplate GENERAL INFORMATION NSF Product Thermometer Installation 1 Unwrap the thermometer and bracket assembly shipped loose with the case 2 Remove left front return air duct Page 8 Tyler Refrigeration 3 Position bracket 1 in from left edge and just under the bottom return air duct holes 4 Mount the bracket to the return air duct with self tapping screws 5 Replace the front return air duct Produce Handling Tips Fresh fruits and vegetable are living things even after they have been harvested They continue the process of respiration and transpiration after harvesting Respiration is the process of self feeding to provide energy for maintaining life EXAMPLE Asparagus and sweet corn generate heat after they are picked Transpiration is the process of water loss through vapor from the plant tissues Post harvest life can be maintained by Slowing the rate of water loss Refrigeration lowers the rate of respiration and transpira tion Store most types of produce close to freezing prior to display There are a number of explanations ex Cucumbers can be kept relatively cool by themselves but could be damaged by temperatures below 40 F See chart on following pages for specifics
12. s Helpful No Asparagus 32 36 90 95 Yes Profitable No Trim butts and stand in ice or shallow water Avocados 40 55 85 90 Yes No No Display on padded surface Bananas Ripe 56 58 85 90 Yes No No Display on padded surface For Ripening 58 68 90 95 No No Avoid bruising Beans Lima 32 40 85 90 Yes Profitable No Shake up to aerate Beans Snap 40 45 90 95 Yes Profitable Yes Beets 32 85 95 Yes Profitable Yes Moisten roots only Berries 31 32 90 95 Yes Helpful No Keep well ventilated Broccoli 32 35 90 95 Yes Profitable Yes Keep out of sun Brussel Sprouts 32 35 90 95 Yes Profitable Yes Remove yellow leaves Cabbage 32 90 95 Helpful Yes Carrots 32 90 95 Profitable Yes Moisten roots only of bunches Cauliflower 32 90 95 Yes Profitable Yes Sprinkle only if refrigerated Celery 31 32 90 95 Yes Profitable Yes Cherries 31 32 90 95 Yes Helpful No Keep well ventilated Corn Sweet 31 32 90 95 Yes Profitable Yes Keep cold to keep sweetness Cucumbers 45 50 85 90 Yes No No advantage Eggplants 45 50 85 90 Yes No No advantage Do not bruise keep on ice Grapefruit 50 60 85 90 Helpful No advantage Remove decayed fruit Grapes 30 32 85 95 Yes Helpful No Keep well ventilated Honeydews 45 50 85 90 Helpful No Cover cut melons with transparent film Lemons 38 40 85 90 Helpful Yes Sprinkling may be helpful Lettuce 32 90 95 Yes Profitable Yes Avoid soaking with water Limes 48 50 85 90 Helpful No advantage October 2004 Page 9 Ideal Storage Conditions Relati
13. ve Humidity Temperature Produce F Mushrooms 32 35 Muskmelons 32 35 Onions Dry 32 Onions Green 32 Oranges 34 38 Parsnips 32 Peaches Ripe 31 32 Pears 29 31 Peas Green 32 Peppers 45 50 Pineapples Ripe 45 55 Plums 31 32 Potatoes 40 50 Radishes 32 Rhubarb 32 Squash Summer 40 50 Winter amp Pmpkns 50 55 Spinach 32 Sweet Potatoes 55 60 Tangerines 32 Tomatoes Ripe 45 50 Tomatoes Green 55 70 Turnips 32 Watermelons 40 45 80 90 85 90 65 70 90 95 85 90 90 95 90 90 95 90 95 90 95 85 90 90 95 85 90 90 95 90 95 85 95 50 75 90 95 85 90 85 90 85 90 85 90 90 95 80 85 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes The Produce Handling Chart is courtesy of Produce Marketing Association Inc Newark Delaware 19711 from their 1973 Yearbook This book is published as a ser vice to the Fresh Produce Industry Page 10 Sell Quickly Refrigerate 1 2 days 40 F Helpful Helpful No Profitable Helpful Helpful Helpful Helpful Profitable Profitable No Helpful No Profitable Profitable Helpful No Profitable No Profitable Helpful No Profitable Helpful Tyler Refrigeration Display Rack Care Sprinkle with Water No No No Yes No advantage Yes No No Yes Yes No No No Yes No Yes No Yes No Yes No No Yes No Special Notes Handle carefully
14. z Case C October 2004 Page 6 Installation amp Service Manual CLEANING AND SANITATION Component Removal and Installa tion Instructions for Cleaning Optional Shelves and Shelf Brackets 1 Remove product from shelves 2 If shelf has a light unplug the light cord from the socket in the rear duct panel Completely insert socket cover in the light socket to protect the receptacle 3 Push shelves back and then lift up and out to remove them from the shelf brackets 4 Remove shelf brackets from slots in rear uprights 5 After cleaning replace in reverse order Screens and Bottom Trays 1 Remove product from screens or bottom of case 2 To remove screen push up until bottom tabs clear holes in front duct then remove screen from case To remove bottom tray grasp and lift out each of the bottom trays from the case interior 3 After cleaning replace bottom trays and or screens in reverse order Front Air Ducts 1 Remove screens and lower trays see this page 2 Lift out front air duct sections 3 After cleaning replace in reverse order Rear Duct Panels 1 Remove mirrors shelves and or bottom trays see above 2 Remove mounting screws and rear duct panels from case 3 After cleaning replace and secure rear duct panels in reverse order October 2004 N2PSSC Discharge Air Honeycomb 1 Loosen screws securing rear retainer plate NOTE Note position of the honeycom
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