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REFRIGERATION FUNDAMENTALS [FOR TRAINED SERVICE PROVIDERS ONLY] 

Note: The Following Information is for Self-Contained Units Only 

 

Temperature Control Access 

 



Assembly or disassembly  and servicing to be accomplished by licensed electrical / refrigeration 
contractor.

 



Temperature control module is located inside the electrical box. 



Electrical box is on the back of the case on the right hand side. 



Loosen screws securing electrical box cover and rotate clear of locking flange. 



If a temperature setting change is required, refer to temperature control access in 

CAREL®            

CONTROLLER INFORMATION 

section of manual.  

 

Refrigeration Package:  Access, Connections & Servicing 



Assembly or disassembly  and servicing to be accomplished by licensed refrigeration 
contractor. 

 



Servicing refrigerant is accomplished from the rear of the case. 



Service connections are located to the right, on the case base assembly. 



Refrigerant lines are flexible to facilitate rear access maintenance to condenser. 



Plastic glides are mounted to the unit base to assist in sliding  the condenser out for access. 

 

 

Condenser 

 

Evaporator  

Pan 

 

Temperature Control 

 

Light Ballast

 

Electrical 

Box

 

Honeycomb 

Air Diffuser

 



Note: Condenser unit does not slide to the front.

 



Remove rear grille and set grille aside. 



Withdraw unit using pull flanges on both sides of 
condenser frame. 

 

Evaporator Pan Access and Removal 

 

Warning: Evaporator pan may be hot.  Allow the 
Evaporator Pan to cool approximately 30-minutes 
before cleaning. 

 



Turn off power.  Disconnect case from power source. 



Remove front grille. 



Remove Evaporator Pan Mounting Screws. 



Insure evaporator pan is unplugged at the 110V 
receptacle inside base. 



Withdraw evaporator pan. 



Empty evaporator pan contents into a suitable 
container. 



Thoroughly clean evaporator pan with de-scaling 
solution, such as 

CLR®

.  Rinse thoroughly.  

DO NOT 

submerse in water. 



Use clean towel dipped in soap and water solution to 
wipe down all fans, motor, refrigeration lines, cords, 
knobs, sight glass, connectors and all other surfaces. 



Wipe dry.   



Reposition Evaporator Pan on Compressor Pan. 



Reattach mounting screws to Evaporator Pan. 



Reconnect Evaporator Pan electrical connections. 



Replace Front Grille.

 

  

Summary of Contents for Oasis CDR4625

Page 1: ...NDISER INSTALLATION OPERATING MANUAL M O B I L E S E R I E S I Oper Manuals PUB CDR MP4048RSS 2447B_4625_4625A_99337 pub 888 E Porter Road Muskegon MI 49441 Phone 231 798 8888 Fax 231 798 4960 www structuralconcepts com Model MP4048RSS 2447B Self Contained Unit Shown Above Model CDR4625A Remote Unit Shown Above Model CDR4625A Self Contained Unit Shown At Right ...

Page 2: ...ROVIDERS ONLY TROUBLESHOOTING TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY TROUBLESHOOTING BY TRAINED SERVICE PROVIDERS ONLY CONDENSING SYSTEM TROUBLESHOOTING BY TRAINED SERVICE PROVIDERS ONLY EVAPORATOR SYSTEM PREVENTIVE MAINTENANCE TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY MAINTENANCE FUNDAMENTALS HONEYCOMB AIR DIFFUSERS FOR TRAINED SERVICE PROVIDERS ONLY SERIAL LABEL LOCATION INFOR...

Page 3: ...H INFO SERVICE section in this manual for sample serial labels COMPLIANCE Performance issues when in violation of applicable NEC federal state and local electrical and plumbing codes are not covered by warranty See below compliance guideline WARNINGS This page contains important warnings to prevent injury or death Please read carefully PRECAUTIONS and WIRING DIAGRAMS See next page for PRECAUTIONS ...

Page 4: ...to maintain proper temperatures Unit must not be exposed to direct sunlight or any heat source ovens fryers etc Tile floors low ceilings or small rooms will increase noise level Whisper Cool compressor blanket or remote unit may resolve noise level issues Keep at least 8 inch clearance above unit for air discharge self contained units only CAUTION WIRING DIAGRAM Each case has its own wiring diagra...

Page 5: ...reflects general outline of sample case and may not reflect your particular model or options chosen Carefully Slide Skid Out From Under Unit Support case while removing from skid Ramp Case Shipping Brackets 4 1 Removing Case Shipping Brackets That Are Attached To Skid Disconnect screws holding Case Shipping Brackets to skid Remove Case Shipping Brackets from Skid See illustration 4 2 Caster Lockin...

Page 6: ...orator coil fans light and the compressor motor From the front of the case raise the deck pans and check to see that the coil fans are all functioning properly Lights will start with supply power First time lighting may require a short warm up period for the bulbs Slightly dim or a flickering of new bulbs is normal 6 OFF ON Rocker Switch Main Power Switch Deck Pans LED Driver Electrical Box Electr...

Page 7: ... glides are mounted to the unit base to assist in sliding the condenser out for access Condenser Evaporator Pan Temperature Control Light Ballast Electrical Box Honeycomb Air Diffuser Note Condenser unit does not slide to the front Remove rear grille and set grille aside Withdraw unit using pull flanges on both sides of condenser frame Evaporator Pan Access and Removal Warning Evaporator pan may b...

Page 8: ...upper or lower pined contacts into the sockets Rotate remaining bulb contacts 1 4 turn into remaining lamp mounting socket contacts See photos at top right LED Style Light Fixtures Removal of lamp If case is provided with LED lights they will rarely require change out Contact Structural Concepts Technical Service Department for replacement parts see the Technical Service section of operating manua...

Page 9: ... water Use soft bristled brush to remove dust grease and grime that collects on filter Rinse thoroughly After filter has dried return to case See REFRIGERATION FUNDAMENTALS section in this manual for illustrations Case Interior Daily Deck Decks can be cleaned with a warm soap and water solution For stubborn stains residue decks can be removed and cleaned with soap and water solution or submersed i...

Page 10: ... the on position Check that ALL of the light cords and plugs are properly connected See MAINTENANCE LIGHT FIXTURES LED LIGHT FIXTURES section in this manual for specifics If case lights still do not come on check that fluorescent lights are not burned out If case lights still do not come on call service provider Case is Not Holding Proper Temperature If a large amount of warm product was added to ...

Page 11: ... outlet before beginning fan shroud and surrounding tub area cleaning 1 Turn off power 2 Remove decks from case 3 Clean fan shroud area and surrounding tub area with moist cloth Quarterly Tub Drain Caution Due to rotating fans in area turn off case and disconnect plug from wall outlet before beginning tub drain cleaning Vacuum tub under decks Clean with soap and water solution Wipe dry with clean ...

Page 12: ... onto flooring causing damage Until evaporator pan is functioning or is replaced following these procedures Use wet dry vacuum or mop bucket to remove standing water Use catch pans for water to drain into Swap out regularly until case has completely drained Caution Disruption of power can cause water to overflow pan and seep onto flooring causing damage Check that power to case is constant Until p...

Page 13: ...heck that the MAIN power switch is on Check that fans are plugged in at the fan shroud Check for foreign material obstructing fan performance Check that fan blades freely rotate within fan shrouds Check that power is going to fans Check that fan wiring is connected on terminal blocks Digital Control Display Is Blank Check that the MAIN power switch is on Check the circuit breaker box for tripped c...

Page 14: ...at condenser coil has been cleaned Check air return grilles for obstructions Check sight glass for flashing and or low charge Check Set Point Temperature it may be adjusted too high Condensing Unit Is Not Operating Check that the power is turned on Determine if temperature controller settings are properly set See your case s serial label for your model s specified settings See SERIAL LABEL LOCATIO...

Page 15: ...the system Check that Liquid Line Drier is not plugged Check that there are no close offs around Condensing Coil Check Set Point Temp it may be adjusted too high Check System Operating Temperatures Check that Store Ambient Temperature isn t above maximum allowed See Overview and Warnings Section Head Pressure Too Low Check that Refrigerant Charge isn t too low Check that Suction Pressure isn t too...

Page 16: ...need adjusting Check that the Thermostatic Element charge isn t depleted Check that there is air no seepage of air around Condensing Coil Check that the Coil is not iced up High Suction Pressure Check that Refrigerant Charge isn t too high Check that Compressor Valves aren t bad Check that the Cooling Load isn t high Check that Superheat Adjustment isn t low Check TXV Bulb Installation a Poor ther...

Page 17: ... and scrubbing method Electric heater coil evaporator pans can be removed and cleaned After thoroughly cleaning pan with scrub brush and solution rinse thoroughly with clean water in spray bottle and wipe dry with sponge or paper towel Use moist cloth to wipe off dust debris that collects on various parts fans sight glass overflow pan etc Slide refrigeration assembly back under case Replace front ...

Page 18: ...it to be pulled out of honeycomb retainer C Carefully pry downward and away from the honeycomb retainer A B C D E F Clean honeycomb with warm water and soap solution Submerse if necessary Use brush to dislodge stubborn or sticky residue Dry by using vacuum s blow mode vs suction mode Honeycomb Air Diffuser Installation D Squeeze honeycomb to allow it to fit into the honeycomb retainer E Carefully ...

Page 19: ...forms For additional technical information and service see the TECHNICAL SERVICE page in this manual for instructions on contacting Structural Concepts Technical Service Department See images below for samples of both refrigerated and non refrigerated serial labels Sample Serial Label For Refrigerated Case Sample Serial Label For Non Refrigerated Case 888 E Porter Road Muskegon MI 49441 Phone 231 ...

Page 20: ...TRATED PARTS BREAKDOWN TYPICAL SELF CONTAINED UNIT 1 10 7 5 3 17 16 12 9 13 8 2 11 18 14 19 20 21 23 24 26 4 6 Reference Electrical Box Temperature Controller Ballast Location Self Contained Units Only 25 22 15 ...

Page 21: ...rmometer 19 Pike Doors 6 Axial Fan 30CFM 20 Chrome Rack 7 Plexi End 21 Prep Surface 8 Plexi Deflector 22 End Panel 9 Deck Pan 23 Pans Condiment Different Sizes 10 Front Panel Assembly 24 Pan Covers Condiment Different Sizes 11 Fan Blade 25 Dividers Condiment Pans 12 Fan Motor 26 Acrylic Bin 13 Evaporator Coil 27 Temperature Controller 14 Lower Front Kick 28 Ballast PARTS LIST ...

Page 22: ...eing made will resume 3 If the instrument is switched off before pressing the Prg key all modifications to parameters will be lost Set Set aux Prg mute def Prg mute Set Set def Set aux aux def Set Prg mute Structural Concepts Corp 888 E Porter Rd Muskegon MI 49441 Ph 231 798 8888 Fax 231 798 0393 www structuralconcepts com I Oper Manuals PUB Templates Carel Controller Carel Controller IR33 pub Thi...

Page 23: ...P alarms reset temp monitoring Summary Table of Alarm and Signals Display Buzzer and Relay Structural Concepts Corp 888 E Porter Rd Muskegon MI 49441 Ph 231 798 8888 Fax 231 798 0393 www structuralconcepts com 23 I Oper Manuals PUB Templates Carel Controller Carel Controller IR33 pub This data derived from Carel Material ir33 030220441 rel 2 0 01 05 2006 ...

Page 24: ...ator min F 1 250 d6 Display on hold during defrost C 0 2 dd Dripping time after defrost min F 0 15 d 1 Display of defrost probe 1 C F F 5 Select Celsius C or Fahrenheit F flag C 0 1 Structural Concepts Corp 888 E Porter Rd Muskegon MI 49441 Ph 231 798 8888 Fax 231 798 0393 www structuralconcepts com 24 I Oper Manuals PUB Templates Carel Controller Carel Controller IR33 pub This data derived from C...

Page 25: ... as defined herein suffered 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 shall include all costs claims damages judgments and expenses including reasonable attorney fees and costs Remedies of SCC SCC s rights and remedies shall be cumulative and may be ex...

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