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18 

TROUBLESHOOTING  

R

888 Porter Rd.  Muskegon, MI  49441  Phone: 231.798.8888  Fax: 231.798.4960  www.structuralconcepts.com 

Product is Drying Out 

Check the relative humidity in the store. 

Water on the Floor 

Check that all of the hoses are connected. 

 

Check that  the drain trap is free of debris. 

 

Is the evaporator pan positioned correctly under drain.

 

 

Is the evaporator pan plugged in and heating properly. 

 

Excessive Fan Noise 

Check that the case is aligned, level and plumb. 

 

Check that nothing is obstructing the blade rotation. 

 

Check that the fan shroud is properly secured. 

System is not Operating 

Check that the utility power is on. 

 

Check that the MAIN power switch is on. 

 

Check the circuit breaker box for tripped circuits. 

Fans Not Working 

Check that the fans are plugged in at the fan shroud.  

 

Determine if there is ice build up blocking the fan. 

Case Lights Not Working 

Check bulbs for proper installation and connection. 

 

Check for burned out bulbs. 

 

Clean dirt and dust from the bulbs to prevent flickering. 

Not Holding Temperature 

Check that the coil fans are working. 

 

Check that  the discharge air is not disrupted or blocked by 
product. 

 

If a large amount of warm product was added to the case, it will 
take time for the temperature to adjust. 

 

Check the coil for ice build up. 

 

Check that the condenser coil is clean (self contained unit). 

 

Check that the case is not in the sun or near a heat or air-
conditioning vent. 

 

Case temperature will rise during defrost mode but will return 
to normal.  Proper product temperature will  be maintained. 

 

Is case located near front doors. 

Condensing Unit Not Operat-
ing 

(self contained unit).

 

Check that the power is turned on. 

Summary of Contents for RB5C4848LR

Page 1: ...38 1 8 D x 47 1 4 H Model RB5C5948LR 56 L x 38 1 8 D x 47 1 4 H Model RB5C7748LR 77 L x 38 1 8 D x 47 1 4 H Model RB5C4848RR 48 L x 38 1 8 D x 47 1 4 H Model RB5C5948RR 56 L x 38 1 8 D x 47 1 4 H Mode...

Page 2: ...EAKDOWN PARTS LIST TROUBLESHOOTING WIRING DIAGRAM RB5C 48 59 77 48 LR RR Units SELF CONTAINED WIRING DIAGRAM RB5C 48 59 77 48 LR RR Units REMOTE CLEANING SCHEDULE JOHNSON CONTROL ALARM and FAULT CODES...

Page 3: ...unit is designed for the display of products in ambient store conditions where temperatures and humidity are maintained at a maximum of 24 C 75 F and 55 relative humidity WARNING Risk of Electric Shoc...

Page 4: ...moving the rear grill will expose ac cess to the a 3 service opening in the base adjacent to a junction box Electrical 120v leads are provided in the junction box Remote refrigeration system Note Serv...

Page 5: ...e front panel a register di rects air flow provided by the front fans front air flow is to prevent condensation from forming on the curved glass Check across the top of the front panel to see if air i...

Page 6: ...irection A mild detergent removes smoke grease stains Rear Ledge Removal 1 Pull ledge back to stops 2 Rotate down to the vertical position 3 From the shelf s lowered position as indi cated at right li...

Page 7: ...ach shelf assembly and at the top inside of case Removal of lamp Rotate lamp 1 4 turn so that pins are aligned with socket slots and remove bulb Installation of lamp Align pins with slots in sockets I...

Page 8: ...ed by licensed electrical contractor Remove the rear grill by removing the six screws located on both sides of the grill Remove the control panel by removing the three remaining screws located on the...

Page 9: ...to unit Evaporator Fan Access Raise the front curved glass Shelving can be removed to facilitate main tenance Turn off the electrical power at main power switch if servicing fans Remove deck pans to a...

Page 10: ...emove the lower front panel Remove screws from the lower flange at the base of the unit Remove screws from the upper flange of the lower front panel located behind the lower edge of the upper front pa...

Page 11: ...and servicing to be accomplished by licensed refrigeration contractor Service connections are located on the compressor condenser assembly Refrigerant lines are flexible to facilitate rear access main...

Page 12: ...4 Hook Up Leads or Cord w Nema 5 15 P Leads or Cord w Nema 5 15 P Leads or Cord w Nema 5 15 P Electrical Controller Electrical Control ler Electrical Control ler Electrical Controller Lighting RB5C484...

Page 13: ...ffset So 0 Defrost Termination Temperature dt 45 Temperature Units Used Un 1 Defrost Interval di 6 Display Refresh Rate PU 1 Electronic Controller Mechanical Control Settings RB5C5948R Mechanical Sett...

Page 14: ...ay During Defrost dP 0 Anti Short Cycle Delay CC 3 Display Delay After Defrost dr 20 Deep Freezing Time Co 0 60 Digital Input Function iF 0 High Temperature Alarm AH 15 Digital Input Time Delay id 10...

Page 15: ...15 ILLUSTRATED PARTS BREAKDOWN R 888 Porter Rd Muskegon MI 49441 Phone 231 798 8888 Fax 231 798 4960 www structuralconcepts com 11 12 1 22 4 19 9 3 8 16 7 21 20 10 13 14 5 6 15 17 18 2...

Page 16: ...16 ILLUSTRATED PARTS BREAKDOWN R 888 Porter Rd Muskegon MI 49441 Phone 231 798 8888 Fax 231 798 4960 www structuralconcepts com 29 30 23 24 27 26 32 33 28 35 25 34 31...

Page 17: ...ght 23 Rear Door Right 6 Lamp 24 Rear Door Left 7 Deck Pan 25 Ledge Hinge 8 Bumper Insert 26 Evaporator Pan 9 Bumper End Cap 27 Ballasts 10 Lower Front Panel 28 Control Panel 12 Front Panel 29 Rocker...

Page 18: ...ot Working Check that the fans are plugged in at the fan shroud Determine if there is ice build up blocking the fan Case Lights Not Working Check bulbs for proper installation and connection Check for...

Page 19: ...19 WIRING DIAGRAM RB5C 48 59 77 48 LR RR Units SELF CONTAINED R 888 Porter Rd Muskegon MI 49441 Phone 231 798 8888 Fax 231 798 4960 www structuralconcepts com...

Page 20: ...20 WIRING DIAGRAM RB5C 48 59 77 48 LR RR Units REMOTE R 888 Porter Rd Muskegon MI 49441 Phone 231 798 8888 Fax 231 798 4960 www structuralconcepts com...

Page 21: ...ont curved glass glass shelves and mirrors with a household or commercial glass cleaner X The acrylic must be cleaned with a mild soap and water solution and a soft cloth Never use a household cleaner...

Page 22: ...r output is off Alarm output is on Correct problem to reset control A2 Digital input closed for longer than time delay id and digital input iF Option 2 is selected Alarm output is on Correct problem t...

Page 23: ...e Hold the Defrost button down for 3 seconds To begin a Deep Freeze Cycle Press the Enter and Up but tons in sequence and hold both for 5 seconds The compressor status LED will light To program values...

Page 24: ...fered or incurred by SCC as a result of or in connection with any act omission or use of the Goods by Purchaser its employees or customers or any breach of this Agreement by Purchaser Liabilities shal...

Page 25: ...25 TECHNICAL SERVICE TECHNICAL SERVICE DEPARTMENT 1 800 433 9489 R 888 Porter Rd Muskegon MI 49441 Phone 231 798 8888 Fax 231 798 4960 www structuralconcepts com...

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