Oasis 54110 Refrigerated Box Cases

Product Information

The product is the Oasis Refrigerated Box Cases, available in self-contained and remote versions. It comes with optional security covers and top-mounted condenser packages on certain models. The product is manufactured by SCC and has the part number 54110. The user manual provides instructions for various models, including Model B32, Model B32.7413, Model B4732, Model B22.6817, Model B5932TM.6785, Model B8832, and Model B6632SC.6241. The product is designed for the display of products in ambient store conditions where temperature and humidity are maintained within a specific range. It complies with applicable NEC, federal, state, and local electrical and plumbing codes. There are several warnings and precautions associated with the product, including electrical hazards, hot surfaces, and the risk of electric shock. The product may contain Urethane (Ethyl Carbamate), which is known to the state of California to cause cancer and birth defects or other reproductive harm.

Product Usage Instructions

1. If you have adjoining cases, refer to the Synchronous Defrost Connection Instructions onand Adjoinment Instructions on  of the manual.
2. If your unit has Aftermarket Product Bins, refer to of the manual for placement instructions.
3. Ensure that the unit is installed in compliance with all applicable NEC, federal, state, and local electrical and plumbing codes.
4. Before servicing the unit, disconnect power to avoid the risk of electric shock.
5. When removing the deck panel or covers, be cautious of hazardous moving parts and hot surfaces.
6. Allow the condensate pan to cool before cleaning or removing it from the case.
7. For lamp replacement, use LED and fluorescent lamps that meet factory specifications, resist breakage, and have a similar appearance as the original lamps.
8. If GFCI (Ground Fault Circuit Interrupter) is required by the NEC or local code, use a GFCI breaker instead of a GFCI receptacle.

Partial List

Partial List of Models To Which This Manual Is Applicable

• B22.6817
• B32 CORE
• B32.5955A
• B3632
• B3632TM
• B42
• B42.5955
• B42.6662
• B4732
• B4732SC.6162
• B4732SC.7773
• B4732TM
• B4732TM.6785
• B4732SC.7382
• B4736SC.7455
• B5932
• B5932TM
• B5932TM.6785
• 6032SC.6162
• B6032SC.6241
• B62
• B6632SC.6241
• B7132 B7132TM
• B7132TMDR
• B7132SC.6162
• CDR7317
• B82
• B8832
• B8832TM
• B9232
• CDR7317 (B42/B62 ADJOINMENT)

OVERVIEW

• These Structural Concepts merchandisers are designed to merchandise packaged products at 41 °F (5 °C) or less product temperatures.
• Product must be pre-chilled to 41 °F (5 °C) or less product temperatures prior to placing in merchandiser.
• Cases should be installed and operated according to this operating manual’s instructions to ensure proper performance.
• Improper use will void warranty.

TYPE I vs. TYPE II ENVIRONMENTAL CONDITIONS

• This unit is designed for the display of products in ambient store conditions where temperature and humidity are maintained within a specific range.
• Type I display refrigerators are intended for use in an area where environmental conditions are controlled and maintained so that the ambient temperature does not exceed 75 °F (24 °C) and 55% maximum humidity.
• Type II display refrigerators are intended for use in an area where environmental conditions are controlled and maintained so that the ambient temperature does not exceed 80 °F (27 °C) and 60% maximum humidity.
• If unsure if your unit is Type I or II, see tag next to serial label. See SERIAL LABEL LOCATION &INFORMATION LISTED / TECH 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.

WARNINGS

• This sheet contains important warnings to prevent injury or death. Please read carefully!

REFRIGERANT DISCLOSURE STATEMENT

• This equipment is prohibited from use in California with any refrigerants on the “List of Prohibited Substances” for that specific end-use, in accordance with California Code of Regulations, title 17, section 95374.
• This disclosure statement has been reviewed and approved by Structural Concepts and Structural Concepts attests, under penalty of perjury, that these statements are true and accurate.

ATTENTION CONTRACTORS

COMPLIANCE: This equipment MUST be installed in compliance with all applicable NEC, federal, state and local electrical and plumbing codes.

WARNING ELECTRICAL HAZARD

WARNING: Risk of electric shock. Disconnect power before servicing unit.
CAUTION! More than one source of electrical supply is employed with units that have separate circuits. Disconnect ALL ELECTRICAL SOURCES before servicing.

WARNING KEEP HANDS CLEAR

WARNING: Hazardous moving parts. Do not operate unit with covers removed. Fan blades may be exposed when deck panel is removed. Disconnect power before removing deck panel.

WARNING HOT SURFACE

WARNING: Condensate Pan is Hot! Disconnect and allow to cool before cleaning or removing from case.
WARNING: This product can expose you to chemicals, including Urethane (Ethyl Carbamate), which are known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

PRECAUTIONS

• This sheet contains important precautions to prevent damage to unit or merchandise. Please read carefully!
• See previous page for specifics on OVERVIEW, TYPE, COMPLIANCE and WARNINGS.

WIRING DIAGRAM

• Each case has its own wiring diagram folded and in its own packet.
• Location: Diagram may be near ballast box, field wiring box, raceway cover, or other related location.

CAUTION! LAMP REPLACEMENT GUIDELINES LED and fluorescent lamps reflect specific size, shape and design. Any replacements must meet factory specifications, resist breakage and reflect similar appearance as lamps from factory.
CAUTION! GFCI BREAKER USE REQUIREMENT If N.E.C. (National Electric Code) or local code requires GFCI (Ground Fault Circuit Interrupter), use a GFCI breaker in lieu of a GFCI receptacle.
CAUTION! POWER CORD AND PLUG MAINTENANCE Risk of electric shock. If cord or plug becomes damaged, replace only with cord and plug of same type.

CAUTION! ADVERSE CONDITIONS / SPACING ISSUES

• Performance issues caused by adverse conditions are NOT warranted.
• To prevent damage to end panels due to condensation, apply industrial grade silicone sealant and tightly join to opposite end panels.
• When not adjoining cases, keep end panels at least 6” away from walls/structures. Rear panels must also be kept at least 6” from walls and structures.
• Case must not be exposed to direct sunlight or any heat source.
• To maintain proper case temperature, keep case at least 15-feet from exterior doors, overhead HVAC vents or any air curtain disruption.

CAUTION! CHECK CONDENSATE PAN POSITION & PLUG

• Water on flooring can cause extensive damage!
• Before powering up unit, check and confirm the following:
• Condensate pan is DIRECTLY UNDER condensate drain.
• Condensate pan plug is securely plugged into receptacle.
• Overflow pan has plug connected to its box. Units withoptional Clean Sweep™ must have TWO PLUGS connected.

CAUTION! DO NOT RELY ON THERMOMETERS OR

• THERMOSTATS FOR PRODUCT (FOOD) TEMPERATURES.
• Thermometers & thermostats reflect air temperatures ONLY.
• For ACTUAL product (food) temperatures, use a calibrated food probe thermometers ONLY.
• For accurate readings, DO NOT use infrared food thermometers.

INSTALLATION

INSTALLATION: CASE REMOVAL (VIA LEVELERS & CASTERS)

Remove Case From Skid (Levelers)

• Remove shipping brace that may be securing case to skid.
• Support case to prevent tipping.
• Caution! Levelers can be damaged if case hits floor with heavy force!
• Carefully slide unit to rear of skid and tip backward off skid.
• Illustration may not reflect every feature or option of your particular case.
• Case can be repositioned with pallet truck when front lower panel is removed. Blocking may be necessary to obtain adequate height.

Remove Case From Skid (Casters)
Remove shipping brackets that secure casters to skid

• Important! Case is shipped with levelers in the DOWN position (for stability). To prevent damage to  the case, all levelers must be raised ALL THE WAYUP before moving unit off skid and into position.
• After levelers are raised all the way up, place ramp up against skid (to allow case to smoothly roll off from skid).
• Maintain support of case at all times or center of gravity may cause case to fall.
• Roll unit to rear of skid. Roll down ramp and off skid.

Position & Align Alongside Other Cases

• Before adjusting levelers, make certain that the case is in proper position and, if required, aligned with adjoining case(s).
• This may require the repositioning of the case you are installing or the already positioned cases.

Adjusting Levelers

• Important! After case is in proper position, levelers must then be LOWERED to floor.
• Adjust levelers so the case is level and plumb.
• You may need to remove front and/or rear toe-kick to access levelers.
• Use adjustable wrench to adjust leveler.
• Depending upon case weight it may be necessary to use a pry bar to accomplish this task.
• Do not use pry bar on toe-kick as it may buckle.
• Do not use pry bar on end panel as it may chip.
• Use pry bar ONLY on base frame to avoid damaging case.
• See illustrations below.

Optional Security Cover Instructions
Caution! Security Cover MUST Be Placed On OUTSIDE of Acrylic Air Deflector and INSIDE Lower Security Bracket To Fit Properly. > Steps A, B and C correspond to this sheet’s illustrations A, B and C. Follow these step-by- step instructions for proper security cover placement.

• A. Firmly hold security cover handles, and place the bottom of the security cover on the OUTSIDE of the acrylic air deflector and INSIDE of lower security bracket.
• B. Lean upper edge of security cover against upper bracket retainer (shown with hidden lines in illustration ”B” on this sheet).
• C. Check that the lock properly rotates its locking mechanism into support angle slot (at upper area). When removing security cover from case, store in safe location away from foot traffic.
• Manufacturing note: if your case DOES NOT HAVE the hardware shown on this sheet for proper placement of security cover, contact Structural Concepts Corporation Technical Service. Toll-free number is listed on the last page of this document.

Synchronous Defrost Connection (Optional)

• Adjoined cases MUST HAVE its synchronous defrost plugs connected.
• See wiring diagram accompanying case

Attention!

• Adjoined cases have synchronous defrosts.
• Synchronous Defrost Plugs Must Be Connected At Rear of Electrical Box During Case Adjoinment.
• See Your Case’s Wiring Diagram For Instructions.

SCC Internal Note: Any Changes To This Sheet Must Also Be Made To SCC P/N 20-61248.
Note: “Daisy-Chain” Synchronous Wiring Must Route To Primary Case (At Left)

Overview / Silicone and Buty Application Sealant Overview:

• Warranty is void if improper sealant is used.
• Sealing tub prevents air from escaping through seams between cases (causing condensation problems and reducing refrigeration efficiency).
• Sealing also prevents water from seeping between cases to the floor.

Silicone and Urethane Application:

• Form (1) INNER sanitation bead AND (1) refrigeration bead BEFORE case is adjoined (as shown).
• Then, AFTER case is adjoined (and bolted), form (1) OUTER sanitation bead (as shown) into any cavities or gaps that may remain along outer adjoinment areas where urethane has ALREADY been applied.
• Also place a thick bead of urathane around drain.

Bolting Adjoined Units

• Bolt holes are at various locations (depending upon model). Model illustrated MAY NOT exactly reflect your particular unit but will likely be similar in layout.
• Use appropriately sized nuts and bolts for each hole.

• 1 hole is accessible at honeycomb (slight adjustment or removal of honeycomb air diffuser may be necessary for attachment of bolt).

• 2 hole is accessible near rear plenum.

• 3 holes are accessible after removing decking.

• 4-6 holes are accessible after removing front panel.

• 7-9 holes are accessible after removing rear panel.

  • Be sure to reattach components to case after the adjoinment process is complete.
  • Note: Any changes to this document must also be made do P/N 20-76683

FRONT GRILLE REMOVAL

FRONT GRILLE REMOVAL / CONDENSER PACKAGE / OVERFLOW PAN / MAIN POWER SWITCH

Removable Front Grille

• Front grille can be removed/replaced via thumbscrew and magnet removal method (shown top-right) OR slot and hook method (shown lower-right).
• Also, hook/magnet method (shown lower-left).

Check That Overflow Condensate Pan is Properly Connected To Outlet

• Caution! Condensate pan can come unplugged from its electrical outlet during shipment!
• If case runs without proper connection, water will overflow pan and drain onto floor causing damage!
• Before turning case on, check that power cord from condensate pan is properly plugged in.
• See TROUBLESHOOTING section in operating manual for additional information.

Turning On Power To Case

• Plug in power cord.
• Main power switch may be turned on by reaching through front grille; however, removal of front grille will allow unhindered access.
• Main power switch is located on main ballast box, below controller. See illustration at right.

EVAPORATOR COIL FAN DISCHARGE / TXV (THERMOSTATIC EXPANSION VALVE)

Evaporator Coil Fan Discharge

• When Main Power Switch is turned on, refrigeration assembly will energize (see CASE START-UP & REFRIGERATION ASSEMBLY ACCESS section).
• Evaporator coil fans should turn on. From inside of the case, check for discharge air from front baffle to confirm that the fans are functioning properly.
• When the case is in a start up mode or has been idle for a long period of time, the unit will require 75 minutes of run time to pull-down temperature.
• See below illustration.

TXV (Thermostatic Expansion Valve)

• TXV is under TXV access panel.
• Decking must be removed for access.
• TXV cover must also be removed for access (remove two thumb screws).
• See illustration below.
• Note: Standard cases have TXV at customer-left. For cases with EnergyWise, TXV is at customer-right.

Sliding Condenser Package Out From Underside Of Case

• At shipment, removal of compressor pan shipment screws may be necessary to access condenser package. See illustration below-left.
• Refrigeration assembly base rests on plastic glides.
• Slide condenser package out from under case.

HONEYCOMB AIR DIFFUSER

Honeycomb Air Diffuser

• Honeycomb is located in discharge air duct.
• See illustration below.
  • Note: Illustration shown below is partially disassembled for illustrative purposes only.

Aftermarket Product Bin – Placement

• Model B4732 (Shown Below) May Not Reflect Every Feature Or Option Of Your Particular Case.
• Product bin is for placing bagged product such as potato chips, pretzels, crackers, etc.
• Product bin is made of stainless steel.
• Remove product bin (to clean or replace).

1. Upper product bin is to hang on acrylic shield at front of case.
2. Lower product bin prongs are to be inserted into upper bin’s cutouts (in base) and hang securely.
3. View of assembled upper and lower product bins.
4. View of assembled upper and lower product bins after being attached to case’s acrylic shield at front of case.

LED LIGHT FIXTURES

LED Style Light Fixtures
Removal of Faulty LED Lights:

• Contact Structural Concepts’ Technical Service Department for replacement LED lights.
• Turn off LED light switch.
• To remove faulty LED light, follow these steps:
  • A. Disconnect plug from LED light.
  • B. Using both hands, grasp LED light assembly (with its magnetic mounting clips). Pull downward and off its shelf (or header).
  • C. Remove magnetic mounting clips from LED light by pressing against flange part of clip with thumb.
  • Note: Mounting clips MAY be riveted to shelf or header. In such instances, simply remove LED light from mounting clips by pressing against flange part of clips with thumb.

Replacement of LED lights:

• Attach magnetic mounting clips onto LED light.
• Adjust magnetic mounting clips so they are equally spaced on LED light.
• Reattach LED light assembly to its shelf/header.
• Position properly in shelf/header.
  • Note: If mounting clips are riveted to shelf (or header), attach by placing LED in base of clip and then snapping into clip at FLANGE SIDE.
• Press plug’s barrel-shaped insert deep into LED light.
• Important: If plug is not inserted ALL THE WAY IN the LED light’s orifice, the light may not energize. See “BAD” vs. “GOOD” insertion illustrations below.
• Turn LED light switch back on.

OPTIONAL

OPTIONAL ROLL-DOWN SECURITY COVER – MODEL B4732 ILLUSTRATED / YOUR MODEL MAY VARY

Roll Down Security Cover (Optional): Shown Extended

• Optional roll down security cover has two handles for grasping, lowering and raising.
• After roll-down cover is lowered, key may be turned clockwise to lock latch into strike bracket.
• Turn counter-clockwise to unlock.
• Keep keys in safe and secure place.
• Sample lock mechanism components (including sample set of keys) are shown at top-right.

Dual Rear Doors (Optional):

• Illustration below has had optional roll-down security cover removed for illustrative purposes.
• Transparent rear doors have perforated plenum as part of each hinged door.
  • Note: Transparent doors are not available on non-standard models.
• See illustrations below.

Single Rear Door (Optional):

• Illustrations below show optional roll-down security cover intact AND removed for illustrative purposes.
• Rear door has stainless steel skin with stainless steel perforated plenum as part of door assembly.
• See illustrations below.
  • Model B3632TM Is Shown. It May Not Reflect Every Feature or Option of Your Particular Case

WALL SPACING

Wall Spacing / Rear Venting (May Not Be Applicable To Your Model)

• Venting Panel: Caution! Venting is an integral part of case temperature management. Case MUST NOT be pushed up against wall if rear venting panel is not attached!
• Rear Grille: Rear grille may be removed (by removing 4 screws) for service or maintenance of condenser unit. Return rear grille to case rear when completed.

CONDENSATE PAN ACCESS

CONDENSATE PAN ACCESS: STANDARD UNITS

Condensate Pan Access

• Warning! Disconnect power before providing maintenance and service to unit.
• First, remove the front grille and slide out the condenser package. See FRONT GRILLE ACCESS / CHECK
• CONDENSER PAN / REFRIGERATION ASS’Y / TURN ON POWER section in this operating manual for instructions.
• Unplug the condensate pan from its outlet.
• Remove the two (2) screws holding the condensate pan foot to the condensate pan support (see illustration below).
• Carefully slide the condensate pan off from the condensate pan support.
• When done servicing or cleaning, return and reconnect in reverse order it was removed.

CONDENSATE PAN ACCESS: REMOTE UNITS WITH CONDENSATE PANS ONLY

Condensate Pan Access and/or Removal

• Caution: Only trained service providers are to provide maintenance and service to unit.
• Warning! Disconnect power before providing maintenance and service to unit.
• To access, remove the front panel. Simply lift panel up and off (no screw removal is required).
• To service or clean, unplug the condensate pan from its outlet.
• Remove the screws holding the condensate pan foot to the condensate pan support (see illustration below).
• Carefully slide the condensate pan off from its support.
• When done servicing or cleaning, return and reconnect in reverse order it was removed.

Self-Contained Hot Gas Loop Condensate Packages

• Caution: Only trained service providers are to provide maintenance and service to unit.
• Warning! Disconnect power before providing maintenance and service to unit.

Self-Contained Hot Gas Loop Condensate Package – Top Mounted

• Caution: Only trained service providers are to provide maintenance and service to unit.
• Warning! Disconnect power before providing maintenance and service to unit.
• Important! See next page for underside pump/drain pan for top mounted units.

Underside Pump/Drain Unit (For Top-Mounted Self-Contained Condenser Packages)

• Caution: Only trained service providers are to provide maintenance and service to unit.
• Warning! Disconnect power before providing maintenance and service to unit.

LOAD LEVEL GUIDE

LOAD LEVEL GUIDE / TEMPERATURE GUIDE (MODEL B42 SHOWN / APPLICABLE TO OTHERS)

LOAD LEVEL & TEMPERATURE GUIDE

• CAUTION 1: TO PREVENT PRODUCT FROM FREEZING OR BECOMING OVERLY WARM, ALLOW AT LEAST 1” SPACE BETWEEN PRODUCT AND UPPER SHELF LIGHTS.
• CAUTION 2: TO PREVENT PRODUCT FROM FREEZING OR BECOMING OVERLY WARM, DO NOT BLOCK AIR RETURN GRILLE WITH PRODUCT.
  • IMPROPER PRODUCT PLACEMENT PREVENTS PROPER AIRFLOW CAUSING PRODUCT TO FREEZE OR BECOME OVERLY WARM.
  • FOLLOW THESE PRODUCT PLACEMENT GUIDELINES TO MAINTAIN DESIRED PRODUCT TEMPERATURES.

CLEANING SCHEDULE

CLEANING SCHEDULE – PERFORMED BY STORE PERSONNEL

mild soap solution and soft cloth. Never use ammonia-based cleaners (nor household or commercial window cleaner) on acrylic.
Daily| Shelves & Decks : Wipe off with moist cloth.
Daily| Glass Surfaces (Optional Rear Transparent Doors, Mirrors, etc.) :

·         Clean with household or commercial glass cleaner. Dry with soft cloth or paper towel.

Weekly| __Magnetic Condenser Coil Filter Option (Self-Contained Units Only) :

·         This optional filter helps prevent dust particles from entering condenser coil.

·         It is accessible by removing front panel from case.

·         Clean magnetic condenser coil filter by following either of these steps:

1.       To clean by hand, (without using dishwasher), remove magnetic condenser coil filter from case. Use a rag or soft-bristled brush to wipe off excess dust particles from filter. Submerse in warm, soapy water. Use soft- bristled brush to remove dust, dirt, grease and grime that may collect on filter. Rinse thoroughly. Skip to step #3.

2.       As magnetic condenser coil filter is dishwasher safe, remove from case (no screw removal required) and use a rag or soft-bristled brush to wipe off excess dust particles from filter. Run in normal dishwasher cycle. Remove from dishwasher. Go to next step.

3.       Dry with soft cloth or paper towel (as shown below) or allow to air dry. Replace.

Weekly| __Rear Perforated Plenum (Either Stainless Steel or Acrylic) :

·         Clean with a warm water and mild soap solution and soft cloth.

Monthly| __Air Return Grille and Fan Shroud Area : See Illustration below. 1) Turn off power. 2) Remove decks from case. 3) Clean with moist cloth.

PREVENTIVE MAINTENANCE

PREVENTIVE MAINTENANCE – TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY

WARNING! TURN OFF CASE BEFORE PERFORMING PREVENTIVE MAINTENANCE!

QUARTERLY PREVENTIVE MAINTENANCE INSTRUCTIONS

Tub, Coil, Drain, Fan Blades, Motors, Brackets:
Caution! Do Not Clean or Perform Service On Unit While It Is Energized!

1. Remove front panel (to access controls). No screw removal is required. Place in safe place away from foot traffic.
2. Turn off main power switch (located near Carel® Temperature Controller).
3. Remove both deck pans/sub-deck. Place in safe place away from foot traffic.
4. Remove electrical tape (if any) and disconnect power cord that energized fan panel.
5. Grasp underside of fan shroud assembly (above trough). Lift upward and away from case. Place in safe place away from foot traffic.

Cleaning Process:

• Use vacuum to remove excessive residue AND to remove dust in coil.
• Use clean cloth and/or nylon brush with warm water and mild soap solution to clean tub, drain, trough,
• TXV, lines, solenoid, coil & coil tubes. See enlarged view of components to be cleaned (lower-right).
• Remove debris that may clog drain.
• Wipe down fan blades, motors and brackets with moist cloth.

Returning Components / Restoring Power To Case:

• Replace/reconnect components in reverse order they were removed or disconnected.
• Turn main power switch back on. Check that fans are operational.

Under Case Cleaning:
Whenever refrigeration assembly is removed from underside of case, vacuum (or broom) under case to remove all dust, debris and dirt that may collect. Condenser Coil Fins / Refrigeration Assembly Without Evaporator Pan:
Warning! Disconnect power from case before beginning process!

• A. Remove front grille (by removing thumbscrews).
• B. Slide out refrigeration assembly.
• C. Use vacuum (in suction mode) and brush to dislodge and remove dust both in and on coil fins.
• D. Place damp rags around condensing fan motor brackets to collect airborne dust.
• E. Switch vacuum to blow mode to blow air through condenser coils and into damp rags on fans. Blow entire surface of condensing coil to assure that all entrenched dust is removed. Caution! Coil fins are sharp!
• F. While refrigeration assembly is out from under case, use a moist cloth to wipe off dust & debris that collects on various parts (fans, sight glass, overflow pan, etc.).
• G. Slide refrigeration assembly back under case.
• H. Replace front grille to case (reattach with thumbscrews). See illustrations below.

WARNING! TURN OFF CASE BEFORE PERFORMING PREVENTIVE MAINTENANCE!

PREVENTIVE MAINTENANCE| QUARTERLY PREVENTIVE MAINTENANCE INSTRUCTIONS
---|---
Case Interior| Refrigeration Assembly With Condensate Pan :

Caution! You must turn main power switch off before cleaning!

·         Remove front grille. Turn main power switch off.

·         Slide refrigeration package out from under case.

·         Remove wicking material (if any).

·         Use a scrub-brush and a non-corrosive de-scaling solution (to remove calcium, lime and rust) from condensate pan. Clean hot gas loop (for EnergyWise units) or electric coil (for standard units). Follow instructions as to proper dilution, safety precautions and scrubbing method.

·         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.).

·         Return wicking material to mounting brackets. If wicking material is tattered, torn or disintegrating, replace with new. If wicking material is not available, contact Structural Concepts. See toll-free number at last page of operating manual.

·         Slide condenser package back under case.

·         Return front grille to case.

PREVENTIVE MAINTENANCE| QUARTERLY PREVENTIVE MAINTENANCE INSTRUCTIONS
---|---
Case Interior| Honeycomb Air Diffuser :

A.  Wedge a non-metallic device of suitable strength (such as a ballpoint pen) between honeycomb and its housing. Caution! Use care not to dislodge the heating wire

(that prevents condensation on the honeycomb retainer).

B.  Apply pressure to collapse honeycomb to pull it out of honeycomb retainer.

C.  Carefully pry downward and away from the honeycomb retainer.

D.  Use brush to reach in and, with outward sweeping motion, pull any crumbs or residue out of honeycomb area.

  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.

E.  After honeycomb has been thoroughly cleaned and dried, squeeze honeycomb to allow it to fit into the honeycomb retainer.

F.  Carefully slide honeycomb into place.

G.  Adjust honeycomb so it fits flat against retainer (not be wavy or out of position).

ANNUAL PREVENTIVE MAINTENANCE INSTRUCTIONS
Optional Clean Sweep® Condensing Coil Cleaner:
Important! Disconnect power from case before cleaning the Clean Sweep® Condenser Coil Cleaner!

• Remove front grille (by removing 4 screws).
• Slide/roll out condensing unit assembly.
• Remove the four (4) screws holding Clean Sweep® rails intact.
• Remove the Clean Sweep® rail.
• Wash rail and brushes in hot water and mild soap solution.
• If brushes are worn, they must be replaced. Call Technical Service Department to replace. Toll-Free number is listed at end of manual.
  • Caution! Coil fins are sharp. Handle with care!
• Reattach Clean Sweep® rail to condensing unit (4 screws).
• Slide/roll condensing unit assembly back under case.
• Replace front grille to case in same manner it was removed.
• See photos below.

TROUBLESHOOTING

TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDER ONLY) – PAGE 1 of 3

instructions on properly aligning case (alongside other cases) and adjusting levelers.
Water Is On The Floor| Caution! Water on flooring can cause much damage! Until cause is determined (and repaired), follow 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.

·         _Note ** :_** See Drain, Hose and Bracket Placement Illustrations sheet in this manual for views of different condensate systems used in display cases.

 | Check that the drain trap is free of debris.
 | Check that the drain hose is correctly positioned over condensate pan (or floor drain, for remote units).
 | Check store conditions. To prevent condensation in Type I environments, maximum conditions are to be 55% humidity / 75 °Fahrenheit. For Type II environmants, maximum conditions are to be 55% humidity / 80 °Fahrenheit. See serial label (at case rear near main power switch) for NSF® Type of your case.
 | Check condensate pan float for proper operation (electric condensate trays).
 | Check that condensate pan is properly plugged in or connected.
 | Caution! Condensate pan may be malfunctioning. If so, water will overflow pan and seep onto flooring causing damage! Until condensate pan is functioning (or is replaced), follow these procedures:

·         Use wet 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 power is restored, follow these procedures:

·         Use wet-dry vacuum (or mop & bucket) to remove standing water.

·         Use ‘catch pans’ for water to drainage. Swap out regularly until drainage of case is complete (or until power is restored).

·         When power to case is restored, condensate pan should function properly and water will no longer overflow onto flooring.

 | Caution! Wicking material (if any) on your particular hot gas loop condensate tray may be dirty or worn and need replacement.

·         Slide condensate package out from under unit.

·         After refrigeration system has been carefully slid out, replace wicking material with new. If wicking material is not available, contact Structural Concepts. See toll-free number at last page of this operating manual.

·         Note : See PREVENTIVE MAINTENANCE (QUARTERLY) – PERFORMED BY TRAINED SERVICE PROVIDER – 3 of 5 section in manual for wicking material illustration.

Noise
 | Check evaporator fan for cleanliness.
 | Unplug/power off fan motors. Check motor shaft for bearing wear.
 | Check that fan motors are securely mounted in brackets.

 | Verify that fan blades are securely mounted to fan motor.

 | Check that nothing is preventing blade rotation.
 | Check that the fan shroud is properly secured.
Fans Are Not Working| Check 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| Check that the MAIN power switch is on.
Is Blank
 | Check the circuit breaker box for tripped circuits.
System 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.
CONDITION| TROUBLESHOOTING
---|---
Case Lights Are Not Working| Check that light switch is in the on position.
 | Check that ALL of the light cords and plugs are properly connected. See

FLUORESCENT LIGHT FIXTURES and LED LIGHT FIXTURES section in this

manual for specifics.

 | Service Technicians Only: Check voltage at LED drivers. If voltage is entering but not exiting, LED driver may be faulty.
Control Display Is

Flashing

| See your case’s serial label for your model’s specified settings. See SERIAL

LABEL LOCATION & INFORMATION LISTED / TECH INFO & SERVICE for

label location, etc.

Case Is Not Holding Temperature| If a large amount of warm product was added to the case, it will take time for the temperature to adjust. Unit needs product to be pre-chilled.
 | Temperature changes during defrost mode but will return to normal. Fourth LED will indicate defrost cycle in progress.
 | Check that case is not in sun or near a heat or air-conditioning vent. See

OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING /

PLUGS section in manual for adverse conditions/spacing issue parameters.

 | If case is located near front doors, temperature fluctuation can hinder unit’s ability to maintain temperature. See OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING / PLUGS section in manual for adverse conditions/ spacing issue parameters.

 | Check that condenser coil air filter (attached to rear grille) has been cleaned. See

GENERAL CLEANING (TO BE PERFORMED BY STORE PERSONNEL) section

in operating manual for instructions.

 | Check that 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 LOCATION & INFORMATION LISTED / TECH INFO & SERVICE section in manual _for label location, etc.

CONDITION| TROUBLESHOOTING|
---|---|---
Low Suction Pressure| Check if sight glass is flashing or showing low charge.
 | Check that expansion valve (TXV) isn’t restricted. Check element charge.
 | Check that liquid line or filter isn’t restricted. Check that refrigeration lines and/or hoses are not kinked on either high or low sides.
 | Check that evaporator fan motors are working.
 | Check that superheat is between 6 °F to 8 °F.
 | Check that there is no air recirculation around evaporator coil.
 | Check that evaporator coil is not iced up.
High Suction Pressure| Check for refrigerant overcharge.
 | Check that compressor reed valves aren’t bad. Look for high suction/low

head pressure. Perform pump down.

 | Check that the “cooling load” isn’t high. Product must be pre-chilled before placing in refrigerated section of case.

 | Check that case is at least 15-feet from exterior doors, overhead HVAC vents or any air curtain disruption.
 | Check that unit is not exposed to direct sunlight via windows or any other

heat source (ovens, fryers, etc.).

 | Check that superheat adjustment isn’t low.
 | Check TXV bulb installation

a.  Poor thermal contact.

b. Warm location.

Serial Label Location & Information Listed / Technical Information & Service

• Serial labels are affixed at a wide range of places (on the header, near thermostat, at case rear, behind panels/toe-kicks, on electrical boxes, etc.).
• Serial labels contain electrical, temperature and refrigeration information, as well as regulatory standards to which the case conforms.
• Sample serial label shown below.
• For additional technical information and service, see the TECHNICAL SERVICE page in this manual for instructions on contacting Structural Concepts’ Technical Service Department.

PROGRAMMABLE CONTROLLER

PROGRAMMABLE CONTROLLER (SELECT, CLICK ON OR SCAN QR CODE FOR INFORMATION)
Determine Which Programmable Controller Is On Your Case (Controllers That Are Commonly Used By Structural Concepts Are Shown Below). Your Particular Programmable Controller May Differ.

To Access Information About The Programmable Controller That Is Used On Your Case, Follow These Instructions:

• If Viewing This Document on Smart Phone, Tablet or Computer, Select/Click On The QR Code at Right.
• If Viewing This Document In Print (Hard Copy), Scan The QR Code at Right With Your Smart Phone or Tablet.

TECHNICAL SERVICE

STRUCTURAL CONCEPTS TECHNICAL SERVICE CONTACT INFORMATION & LIMITED WARRANTY

• TECH SERVICE/WARRANTY CONTACT INFO: 1 800-433-9490 / EXTENSION 1
• DAYS/HOURS AVAILABLE: MONDAY – FRIDAY (CLOSED HOLIDAYS)
• 8:00 a.m. TO 5:00 p.m. EST
• YOU MUST HAVE THE FOLLOWING INFO AVAILABLE BEFORE CONTACTING STRUCTURAL CONCEPTS:
• SERIAL NO. / MODEL NO. / STORE NO. / STORE ADDRESS / DETAILS (PHOTOS, LEAK LOCATIONS, DAMAGE, STORE’S AMBIENT CONDITIONS, ETC.)

To Access The Limited Warranty To Your Case, Follow These Instructions:

• If Viewing This Document on Smart Phone, Tablet or Computer, Select/Click On The QR Code at Right.
• If Viewing This Document In Print (Hard Copy), Scan The QR Code at Right With Your Smart Phone or Tablet.

Important!

• If Adjoining Cases, see Synchronous Defrost Connection Instructions on page 8 and Adjoinment Instructions on Page 9 of Manual.
• If your unit has Aftermarket Product Bins, See Page 13 of Manual for Placement Instructions.

CONTACT

• 888 E. Porter Road
• Muskegon, MI 49441
• Phone: 231.798.8888
• Fax: 231.798.4960
• www.structuralconcepts.com.
• REV AU DATE: 10/14/2022

USER MANUALS\54110_OASIS_USER MANUAL_BXX_B(L)(D)_B(L)(D)TM_REF_SELF-SVC_BOX CASE

References

• P65Warnings.ca.gov
• Delivering Fresh. Always. | Structural Concepts
• Processing QR Code
• Processing QR Code

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