Structural Concepts B424TM Oasis 47 Inch Shallow Depth Air Curtain Instruction Manual

B424TM Oasis 47 Inch Shallow Depth Air Curtain

Product Information

This product is an aisle self-service refrigerated case with a
top-mount condenser package. It is available in two models: B424TM
and B824TM. The B424TM model measures 47 1/4L x 25D x 84 3/4H~,
while the B824TM model measures 92 1/4L x 25D x 84 3/4H~. Both
models come with optional features such as upper lights and night
air curtain.

The product is manufactured by Structural Concepts, located at
888 E. Porter Road, Muskegon, MI 49441. For inquiries, you can
contact them at Phone: 231.798.8888 or Fax: 231.798.4960. More
information can be found on their website: www.structuralconcepts.com.

Product Usage Instructions

To ensure proper installation and operation of the refrigerated
case, please follow the instructions provided in the user
manual.

Positioning Case / Shimming Support Rails / Adjusting

Levelers

Refer to page 6 of the user manual for instructions on how to
position the case, shim the support rails, and adjust the
levelers.

Case Startup & Condenser Package – Models B424TM,

B424TM.4489 & B424TM.4857

Refer to page 7 of the user manual for instructions on how to
startup the case and condenser package for these specific
models.

Case Startup & Condenser Package – Model B824TM Only /

Wicking Material & Inserts

Refer to page 8 of the user manual for instructions on how to
startup the case and condenser package for the B824TM model. This
section also covers information about wicking material and
inserts.

Case Startup & Evaporator Package – Evaporator Coil Fan /

TXV Valve

Refer to page 9 of the user manual for instructions on how to
startup the case and evaporator package. This section includes
information about the evaporator coil fan and TXV valve.

Honeycomb Air Diffuser Access / Removal / Installation

Refer to page 10 of the user manual for instructions on
accessing, removing, and installing the honeycomb air diffuser.

LED Light Fixtures (Including Optional Lights in Header)

Refer to page 11 of the user manual for information on LED light
fixtures, including optional lights in the header.

Fluorescent Light Fixtures (Including Optional Lights in

Header)

Refer to page 12 of the user manual for information on
fluorescent light fixtures, including optional lights in the
header.

Condensate Pump and Pan Access

Refer to page 13 of the user manual for instructions on
accessing the condensate pump and pan.

Optional Night Air Curtain Operating Instructions

Refer to page 14 of the user manual for operating instructions
for the optional night air curtain.

General Cleaning (To Be Performed by Store Personnel)

Refer to page 15 of the user manual for instructions on general
cleaning tasks that can be performed by store personnel.

Troubleshooting (To Be Performed by Store Personnel)

Refer to page 16 of the user manual for troubleshooting guidance
for common issues that can be addressed by store personnel.

General Cleaning (To Be Performed by Trained Service Providers

Only)

Refer to page 17 of the user manual for instructions on general
cleaning tasks that should only be performed by trained service
providers.

Preventive Maintenance (To Be Performed by Trained Service

Providers Only)

Refer to page 18 of the user manual for instructions on
preventive maintenance tasks that should only be performed by
trained service providers.

Troubleshooting (To Be Performed by Trained Service Providers

Only)

Refer to page 19-20 of the user manual for troubleshooting
guidance for complex issues that should only be addressed by
trained service providers.

Troubleshooting – Condensing System (To Be Performed by Trained

Service Providers Only)

Refer to page 21 of the user manual for troubleshooting guidance
specifically related to the condensing system. These tasks should
only be performed by trained service providers.

Troubleshooting – Evaporator System (To Be Performed by Trained

Service Providers Only)

Refer to page 22 of the user manual for troubleshooting guidance
specifically related to the evaporator system. These tasks should
only be performed by trained service providers.

Additional Information

For information about serial label location, technical
information, service contacts, and warranty information, refer to
pages 23 and 27 of the user manual.

READ AND SAVE THESE INSTRUCTIONS
INSTALLATION AND OPERATING MANUAL

P/N 54298

IN AISLE SELF-SERVICE REFRIGERATED CASES WITH TOP MOUNT CONDENSER PACKAGE

MODEL B824TM Shown (With Optional Upper Lights)

MODEL B424TM Shown (With Optional Night Air Curtain)

Model B424TM…………………………………………….. 47 1/4″L x 25″D x 84 3/4″H~ Model B424TM.4489……………………………………… 47 1/4″L x 25″D x 84 3/4″H~ Model B424TM.4857……………………………………….47 1/4″L x 25″D x 84 3/4″H~ Model B824TM……………………………………………..92 1/4″L x 25″D x 84 3/4″H~
*Includes End Panels ~ Units With Levelers Extended 1 5/8″ Below Base Frame To Attain Listed Height

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

I:Oper ManualsOasisB424TM_4489_4857_B824TM_54298.pub

Rev H Date: 12.17.2021

TABLE OF CONTENTS

OVERVIEW / NSF® TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS ………………………….. 3-4

INSTALLERS: FOLLOW THESE INSTRUCTIONS! ………………………………………………………. 5

POSITIONING CASE / SHIMMING SUPPORT RAILS / ADJUSTING LEVELERS …………………… 6

CASE STARTUP & CONDENSER PKG. – MODELS B424TM, B424TM.4489 & B424TM.4857 ……. 7 CASE STARTUP & CONDENSER PKG. – MODEL B824TM ONLY / WICKING MATERIAL &
INSERTS ………………………………………………………………………………………………. 8 CASE STARTUP & EVAPORATOR PKG. – EVAPORATOR COIL FAN / TXV VALVE ……………… 9

HONEYCOMB AIR DIFFUSER ACCESS / REMOVAL / INSTALLATION ……………………………… 10

LED LIGHT FIXTURES (INCLUDING OPTIONAL LIGHTS IN HEADER) ……………………………… 11 FLUORESCENT LIGHT FIXTURES (INCLUDING OPTIONAL LIGHTS IN HEADER) ………………. 12

CONDENSATE PUMP AND PAN ACCESS ………………………………………………………………… 13

OPTIONAL NIGHT AIR CURTAIN OPERATING INSTRUCTIONS ……………………………………… 14

GENERAL CLEANING (TO BE PERFORMED BY STORE PERSONNEL) ……………………………. 15 TROUBLESHOOTING (TO BE PERFORMED BY STORE PERSONNEL) ……………………………. 16

GENERAL CLEANING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY) ……… PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS
ONLY) ……………………………………………………………………………………………………………………… TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY) ……… TROUBLESHOOTING – CONDENSING SYSTEM (TO BE PERFORMED BY TRAINED SERVICE
PROVIDERS ONLY) …………………………………………………………………………………. TROUBLESHOOTING – EVAPORATOR SYSTEM (TO BE PERFORMED BY TRAINED SERVICE
PROVIDERS ONLY) …………………………………………………………………………………………………..

17 18 19-20 21 22

SERIAL LABEL LOCATION & INFORMATION LISTED / TECH INFO & SERVICE ………………….. 23

CAREL® CONTROLLER OPERATING INSTRUCTION ………………………………………………….. 24-26

SCC TECHNICAL SERVICE CONTACT INFORMATION & WARRANTY INFORMATION ………… 27

2

OVERVIEW / NSF® TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS – PAGE 1 of 2

OVERVIEW These Structural Concepts Oasis® self-service
cases are designed to merchandise packaged products at 41 °F (5 °C) or less product temperatures (unless custom cases with wire rack shelving). Cases should be installed and operated according to this operating manual’s instructions to insure 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 55% 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 Following are important warnings to prevent injury or
death. Please read carefully!

ATTENTION CONTRACTORS
WARNING
ELECTRICAL HAZARD

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

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 Condenser Pan / Hot Gas Loop Condensate System 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.

3

OVERVIEW / NSF® TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS – PAGE 2 of 2

PRECAUTIONS
Following are important precautions to prevent damage to unit or merchandise. Read carefully!
See previous page for specifics on OVERVIEW, TYPE I AND TYPE II ENVIRONMENTAL CONDITIONS, COMPLIANCE and WARNINGS.
WIRING DIAGRAM FORMAT & LOCATION
Each case has its own wiring diagram folded and in its own packet.
Wiring diagram placement may vary; it may be

placed near ballast box, field wiring box, raceway cover, or other related location.
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.

CAUTION

CAUTION! LAMP REPLACEMENT GUIDELINES LED lamps reflect specific size, shape and overall design.
Any replacements must meet factory specifications. Fluorescent lamps have been treated to resist breakage and must be
replaced with similarly treated lamps.

CAUTION! GFCI BREAKER USE REQUIREMENT If N.E.C. (National Electric Code) or your local code requires GFCI (Ground Fault Circuit Interrupter) protection, you MUST 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

CAUTION! ADVERSE CONDITIONS / SPACING ISSUES Performance issues caused by adverse conditions are NOT warranted. End panels must be tightly joined or kept at least 6-inches away from
any structure to prevent condensation. Unit must be kept at least 15-feet from exterior doors, overhead HVAC
vents or any air curtain disruption to maintain proper temperatures. Unit must not be exposed to direct sunlight or any external heat
source (ovens, fryers, etc.). Keep at least 8-inch clearance above unit for air discharge
(self-contained units only).

CAUTION! CHECK CONDENSATE PAN POSITION AND PLUG Water on flooring can cause extensive damage! Before powering up unit, check the following: Condensate pan pump must be properly plugged into outlet (see next page for photographs). Condensate pan (atop case) MUST BE positioned directly under condensate drain. Overflow condensate pan electrical cord’s plug MUST BE securely plugged into receptacle.

4

INSTALLERS: FOLLOW THESE INSRUCTIONS
1. Remove Shipping Brackets Attached to Skid
Remove screws holding Case Shipping Brackets to skid. Remove Case Shipping Brackets from Skid. See illustration at right. Note: Shipping Brackets will vary
in size, shape, material and location depending upon case type and model.
2. Remove Unit From Skid
While supporting case, carefully slide case off from skid at either left or right side of case (NOT at case rear or front).
See illustration at mid-right for method. Remove Shipping Support Board Place into proper position.
3. Attach Condensate Pan to Unit Condensate pump pan is shipped separately from case. After case is in position, plug cord into electrical box at
underside of case, hook condensate hose to pump nozzle. Slide into place (at case underside). See illustrations 3A through 3D below. Note: Images 3A through 3D are for illustrative purposes
only. Though images may show condensate pan on skid, case has been removed from skid prior to these steps. Caution! Be sure to loop the pump’s electrical cord through the cord hooks under the case.

SCC P/N 54113
Case Shipping Brackets

Pump Nozzle
Condensate Pump Pan

Carefully Slide

3A

Case Off Skid

Electrical cord from pump (to be looped through the cord hooks under the case).
3B

Shipping Support Board
3D

Condensate Pump Pan Support
Bracket (one at either side)

Condensate Pump Hose

Drain Pipe (to be positioned over condensate pump
pan)

3C

I:Oper ManualsSpecialtyCDR4489.B424TM Skid RemovalSheet4489.B424TM_Skid_Removal_Sheet_54413.pub

View of Condensate Pump Pan (Positioned Properly and
Fully Connected)
Sliding Condensate Pump Pan under case
Rev B Date: 1.22.2011

5

POSITIONING CASE / SHIMMING SUPPORT RAILS / ADJUSTING LEVELERS

Note: Units shown may not depict an exact representation of your particular unit being installed.

1. Position & Align Case Alongside Other Cases
Before adjusting levelers (or shimming frame support rails), 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 case(s).
2. Cases With Frame Support Rails: Shim
Illustration at top right shows case with frame support rails.
Shims will be provided with all cases that have frame support rails.
Use shims to level case. Note: After case is in position, it must be
sealed to floor to prevent entry or leakage of liquid or moisture.

3. Cases With Levelers: Adjust Levelers
After case is in position, adjust case so it is level and plumb (as shown at right).
You may need to remove front and/or rear toe-kick to access levelers.
Use adjustable wrench (and possibly a pry bar) to adjust leveler.
Do not use pry bar on toe-kick as it may buckle.
Do not use pry bar on end panel; it may chip. Use pry bar ONLY on base frame to avoid
damaging case. See illustration and photos at lower right.

Frame Support Rails
Frame Support Rails

Adjustable Wrench

Pry Bar
6

Base Frame

Leveler

Toe-Kick

CASE STARTUP & CONDENSER PKG. – MODELS B424TM, B424TM.4489 & B424TM.4857

Electrical and Control Access

Main power cord and switch are accessible from the top front right hand side of header assembly.
Thermostat control settings / refrigeration service ports / evaporator pan are also accessible from top.
Illustration below provides layout of components.

Condensate Pan Access

Warning! Disconnect power before providing maintenance and service to unit.

Condensate pan is accessible from the top of

the unit.

Unplug the evaporator pan from its outlet.

Remove screws holding the condensate pan foot

to the compressor pan (see illustration below).

Caution! To avoid injury, check temperature of pan prior to handling condensate pan.
If condensate pan must be removed from unit (to properly clean), remove carefully by lifting condensate pan up and off base.
Empty condensate pan contents into suitable container.
See PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS) section in this manual for cleaning specifics.
When done servicing or cleaning, return and reconnect in reverse order it was removed.
Note: See next page for Model B824TM refrigeration package layout & access.

Sight Glass Receiver

Receiver

Compressor Electrical Box

Compressor

Condensate Pan and Removal Screws

Ballast Box / Contactor /
Terminal Strip / Thermostat Controller /
Main Power Switch

Condenser Coil

Condenser Coil Fans

— Case Front —

Thermostat Controller

Main Power Switch

7

CASE STARTUP & CONDENSER PKG. – MODEL B824TM ONLY / WICKING MATERIAL & INSERTS

Electrical and Control Access

Wicking Material, Metal Insert & Upright Prongs

Main power cord and switch are accessible from the Metal insert prongs must be positioned

top front right hand side of header assembly.

90° upright (to hold wicking material).

Thermostat control settings / refrigeration service If prongs are NOT bent 90° upright, simply

ports / evaporator pan are also accessible from top.

grasp each prong and bend it accordingly

Illustration below provides layout of components.

(as illustrated immediately below). Note: Your

insert design may vary from designs shown.

Hot Gas Loop Condensate Pan (and Electric Coil Overflow Pan) Access Warning! Turn off Main Power Switch Before Providing Maintenance or Service to Unit. Both hot loop condensate pan and electric coil

Wicking material must be removed

from its packages and inserted over upright prongs (see sample

Prongs at 90° (Typ.)

condensing package

below).

overflow pan is accessible from top of unit.

Caution! Before accessing pans, turn main power off and allow to cool!
To avoid injury, check temperature of pans

Prongs at 90° (Typ.)

Metal Insert Designs

prior to accessing. See PREVENTIVE MAINTENANCE (TO BE

Sample Condensing

PERFORMED BY TRAINED SERVICE

Package

PROVIDERS) section in this manual for

cleaning specifics.

Wicking

When done servicing or cleaning, turn main

Material (Typ.)

power switch back on.

Note: See previous page for other models’

refrigeration package layout & access.

Drain (From Hot Gas Condensate
Coils and Pan

Hot Gas Condensate
Coils, Pan & Wicking Material

Electrical Box For Overflow
Unit

Accumulator

Electrical Box

Metal Inserts

Main Power

Switch

Thermostat

Controller

Condenser Coil

Condenser Coil Fans

Receiver

Filter Dryer Sight Glass

— Case Front —

Scroll Compressor

Ballast Box /
Contactor / Terminal Strip /
Thermostat Controller / Main Power Switch

8

CASE STARTUP & EVAPORATOR PKG. – EVAPORATOR COIL FAN / TXV VALVE
1. 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 fan should turn on. From inside of the case, check for discharge air from honeycomb
discharge duct (see next page for honeycomb location), to confirm that the fan is 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. 2. TXV Valve TXV Valve (at customer front-left of case). Decking must be removed for access. See illustration below for location.
Decking

View of TXV valve after customer end panel
removed (for illustrative purposes only).
9

Evaporator Coil fan assembly

HONEYCOMB AIR DIFFUSER ACCESS / REMOVAL / INSTALLATION 1. Honeycomb Air Diffuser Removal Honeycomb is located in discharge air duct. Use a device of suitable strength and agility such as a ballpoint pen or long nose pliers. Wedge instrument in Honeycomb near the Front Honeycomb Retainer Lip (see illustration below). Applying pressure toward case rear, so that Honeycomb will scrunch together; then pry downward and
away from the top light and discharge panel. Pull honeycomb out fully buy grasping with fingers and pulling downward. 2. Honeycomb Air Diffuser Installation Insert honeycomb up into Rear Honeycomb Retainer Lip first. Apply pressure toward case rear, so that the Honeycomb will scrunch’ together; then apply pressure to honeycomb, lifting it up past Front Honeycomb Retainer Lip andun-scrunch’ Honeycomb. Note: Depending upon model and features, the illustration below may slightly differ from yours. Note: Illustration below reflects general outline of sample case and does not reflect any particular model
or options.
Honeycomb Front
Honeycomb
Rear Honeycomb
10

LED LIGHT FIXTURES (INCLUDING OPTIONAL LIGHTS IN HEADER)

1. LED Style Light Fixtures
Removal of Faulty LED Lights: Contact Structural Concepts’ Technical Service

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.

Department for replacement LED lights.

Press plug’s barrel-shaped insert deep into LED light.

Turn off LED light switch.

Important: If plug is not inserted ALL THE WAY IN

To remove faulty LED light, follow these steps:

the LED light’s orifice, the light may not energize.

A. Disconnect plug from LED light.

See “BAD” vs. “GOOD” insertion illustrations below.

B. Using both hands, grasp LED light assembly Turn LED light switch back on.

(with its magnetic mounting clips). Pull

downward and off its shelf (or header).

C. Remove magnetic mounting clips from LED

Optional: Lights in Headers Are Accessible

light by pressing against flange part of clip with

From Top of Case. Ample Space is Provided

thumb.

For Lamp Removal/Replacement

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.

Light Switch

A

Plug

LED Light

Barrel
Shaped Insert

LED Lights

B

C

Magnetic Mounting Clip View #1

Magnetic Mounting Clip View #2

11

Gap

No Gap

FLUORESCENT LIGHT FIXTURES (INCLUDING OPTIONAL LIGHTS IN HEADER)
Optional: Lights in Headers Are Accessible From Top of Case. Ample Space is Provided For Lamp Removal/Replacement
Light Switch
Light Fixtures (Note: Light Fixtures May Not Be on All Cases) Warning! Disconnect power before providing maintenance and service to unit. Caution: Lamps have been treated to resist breakage and must be replaced with similarly treated lamps. Note: Light Switch is at underside of header, behind honeycomb.
All lights come on at same time when light switch is turned on. Light fixtures are to be located on underside of shelf assembly, at the top inside of case, and lower front nose of case. Some cases have lights in header. See illustration at right for lamp locations. Removal of lamp: Rotate lamp (1/4-turn) either direction to disengage (upper or
lower) pins/contacts from lamp-mounting sockets. Remove bulb by applying even pressure from back side at the
bulb ends and pulling the remaining contact from sockets. Installation of lamp: Align pins with slot. Insert pins into socket by rotating the bulb 1/4-turn to secure
either the (upper or lower) pin contacts into the sockets. Rotate remaining bulb contacts (1/4-turn) into remaining lamp
mounting socket contacts. Lights in headers: Lights in headers are optional. Lights are accessible from top of case. Ample space is provided
for lamp removal and replacement
12

CONDENSATE PUMP AND PAN ACCESS
Condensate Pump Pan Access Warning! Disconnect power before providing maintenance and service to unit.
Remove the two (2) screws holding the toe kick in place. See illustration below. The condensate pan is accessible from the bottom of the unit. Unplug the Condensate Pan from its
outlet. A 1/2″ reinforced hose is provided to evacuate condenser water from condensate pump pan to an
evaporator pan placed on the top of case. Disconnect pump hose from condensate pump Carefully slide out the Condensate Pan from the
Condensate Pump cradle. When done servicing or cleaning, return and reconnect in reverse order it was removed.

Condensate Pump Electrical Outlet (at Right of Pump and
Pan on Model B824TM
To remove the toe kick remove the two screws on each side of toe kick
13

Condensate Pump & Pan
Condensate Drain

OPTIONAL NIGHT AIR CURTAIN OPERATING INSTRUCTIONS
Optional Night Air Curtain Operating Instructions
1. Use caution when handling Night Air Curtain. 2. Display case may come with Night Curtain already attached. If not, a retrofit kit will be provided. If using
SCC-supplied retrofit kit, attach to display case by inserting screws at top- underside of display case. 3. Grasp the handle and pull downward to desired location (see illustration below). 4. Night Air Curtain’s Magnets will hold curtain in lowered position (as illustrated below). 5. To return Night Air Curtain to its retracted position, grasp handle, lift up and away from its magnetic
attachment plate and carefully wind Night Air Curtain back into roll. 6. Caution! Do not allow spring-loaded Night Air Curtain to freely snap back into roll. Doing so can eventually
destroy Night Air Curtain’s tension and retractability. 7. To entirely detach Night Air Curtain from case, slide Night Air Curtain toward rear of case, freeing it from its
`keyhole’ slots. Lift upward and away from case.
Night Air Curtain Handle
Attachment Point For Night Air Curtain’s Magnetic Retainers
Model B23.5258A Is Shown With Optional Night Air Curtain. Your Model May Vary.
14

GENERAL CLEANING (TO BE PERFORMED BY STORE PERSONNEL)

AREA TO CLEAN Case Exterior

FREQ. Daily

INSTRUCTIONS Acrylic (if Any): Clean with a warm water and mild soap solution and soft cloth. Never use ammonia-based cleaners on acrylic.

Daily to Case Front/Sides/Bumper: Use a mild soap and water solution and a Weekly soft cloth.

Weekly to Monthly

Condenser Coil: Vacuum or brush grille condenser coil at case front (on top of case). Use metal or fiber brush to remove dust and dirt that can collect on condenser coils. Be careful not to damage the fins on the coil. See INSTALLATION section in this manual for instructions on side panel removal.

Case Interior

Daily to Weekly

Shelves / Shelf Supports / Air Return Grilles / Decking / Inside End Panels Wipe off shelf supports, air return grilles and decking with moist
cloth. Shelf supports can be removed for more thorough cleaning. Air return grilles can be removed for more thorough cleaning. Decking is NOT to be removed.

15

TROUBLESHOOTING (TO BE PERFORMED BY STORE PERSONNEL)

CONDITION Case Is Not Level
Water Is On The Floor

TROUBLESHOOTING See POSITIONING CASE / SHIMMING SUPPORT RAILS / ADJUSTING LEVELERS section in manual for additional information. Call service provider.

Fan Emits Excessive Noise Call service provider. 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 LIGHT FIXTURES (INCLUDING OPTIONAL LIGHTS IN HEADER) section in this manual for specifics.
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 the case, it will take time for the temperature to adjust. Product must be pre-chilled before
placing in case.

Check that the case is not in the sun or near a heat or air-conditioning vent. See OVERVIEW / NSF® TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS section in this manual for specifics.
If case is located near front doors, temperature fluctuation can hinder unit’s ability to maintain temperature.

Check air return grilles (area at front of decking) for obstructions. DO NOT set product on air grilles as this will prevent proper airflow!

If case still is not holding proper temperature, call service provider.

16

GENERAL CLEANING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY)

WARNING! TURN OFF CASE BEFORE PERFORMING GENERAL CLEANING!

AREA TO CLEAN Case Interior

FREQUENCY

INSTRUCTIONS

Monthly

Evaporator Fan Shroud Area (Under Decking): Caution! Due to rotating fans in area, turn off case and disconnect plug from wall 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.

Monthly

Pan For Pumping Condensate to Top of Unit: (Located at underside of unit): Remove front toe-kick to access. Check that pump is working correctly.
Check that condensate pan is free of residue, dust or dirt.
If it must be cleaned, slide out from under unit; clean with mild soap and water solution and soft cloth. Rinse. Return to underside of case in reverse order it was removed from case.

Quarterly

Tub & Drain: Caution! Due to rotating fans in area, turn off power to 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 cloth. Keep drain free of debris to prevent clogging.

17

PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS)

WARNING! TURN OFF CASE BEFORE PERFORMING PREVENTIVE MAINTENANCE!

PREVENTIVE MAINTENANCE

FREQ.

INSTRUCTIONS

Case Exterior

Quarterly Under Case Cleaning: Whenever accessing condensate pump pan at underside of case, vacuum (or use broom) under the case to remove all dust, debris and dirt that may collect.

Case Interior

Quarterly

Condensate Pan (or Hot Gas Loop Condensate Pan): Warning! Condensate Pans Are HOT! Disconnect power from case
and allow to cool before cleaning!
See CASE STARTUP & REFRIGERATION PACKAGE ACCESS section for in-depth instructions on accessing the condensate pans.
Check if wicking material is dirty, worn, tattered or disintegrating. If so, it must be replaced. Contact Structural Concepts for replacement wicking material (toll-free number is listed on the last page of this operating manual).
Use a scrub-brush and a de-scaling solution such as CLR® (to prevent corrosion, lime and rust). Follow instructions as to proper dilution, safety precautions and scrubbing method.
If condensate pan can be removed from case (should thorough cleaning require removal), disconnect pan from unit and clean accordingly. Caution! Due to electrical components, do not submerse in water! Reattach to case after cleaning.
Hot gas condensate loop pan (and its accompanying electric coil overflow pan) is not removable from case. After thoroughly cleaning pan with scrub-brush and solution, rinse thoroughly with clean water (using spray bottle) and wipe dry with sponge or paper towel.

Quarterly

Tub, Coil, Drain, Fan Blades, Motors, Brackets: Disconnect power from the case before cleaning the Tub, Coil, Fan, Motor and Drain Area! Remove Decking, Sub- Deck (if any) and Fan Shroud. Use vacuum to clean Evaporator Coils. Clean Tub, Coil and Drain with warm water, clean cloth, brush and
mild soap solution. Remove any debris that may clog drain. Wipe down Fan Blades, Motors and Brackets with moist cloth. Replace Decking, Sub-Deck (if any) and Fan Shroud.

Quarterly

Honeycomb: Check honeycomb air diffuser to determine if it is dirty. If dirty, remove from case. See HONEYCOMB AIR DIFFUSER ACCESS / REMOVAL / INSTALLATION section of this manual for cleaning specifics.

18

TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY)

CONDITION Water Is On The Floor

TROUBLESHOOTING Check that the drain trap is free of debris. Check that the drain hose is correctly positioned over evaporator pan.

Fan Emits Excessive Noise
Fans Are Not Working
Digital Control Display Is Blank. System Is Not Operating Case Lights Are Not Working

Check store conditions. For NSF® Type 1 Conditions (most cases): ambient conditions are to
be at 55% max. humidity / 75°F. For NSF® Type 2 Conditions: ambient conditions are to be at 60%
maximum humidity / 80°F.
Check that the hot gas condensate pan is properly connected. Check that evaporator pan is heating properly. Check that the case is aligned, level and plumb. 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. 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. Check that the MAIN power switch is on.
Check the circuit breaker box for tripped circuits. Check that the utility power is on. Check that the MAIN power switch is on. Check the circuit breaker box for tripped circuits. Check that light switch is in the on position.
Check that ALL of the light cords and plugs are properly connected. See LIGHT FIXTURES/LIGHT SWITCH LOCATION section in this manual for specifics.
Service Technicians Only: Check voltage at ballasts. If voltage is entering but not exiting ballast, ballast is faulty.

19

TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY), CONTINUED

CONDITION

TROUBLESHOOTING

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 section in manual for label location, etc.

Case Is Not Holding If a large amount of warm product was added to the case, it will take time for the

Temperature

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.

If case is located near front doors, temperature fluctuation can hinder unit’s ability to maintain temperature.
Check that condenser coil has been cleaned. Check air 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 Check that the power is turned on. Not Operating 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.

20

TTRROOUUBBLLEESSHHOOOOTTIINNGG — CCOONNDDEENNSSIINNGG SSYYSSTTEEMM ((TBRYATINREADINSEEDRSVEICREVIPCREOPVRIODEVRIDSEORSNLOYN) LY)

CONDITION

TROUBLESHOOTING

Head Pressure Too High Check that the condensing coil is not dirty or covered.

Check that condensing fans are working.
Check that refrigerant is not overcharged.
Perform sub-cooling check and verify that no contaminates are in system.
Check that liquid line filter dryer is not plugged.
Check that close-offs are intact (around condensing coil) and that air is not recirculate. Check that store ambient temperature isn’t above maximum allowed. See OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING / PLUGS section in this manual.
Head Pressure Too Low Check if sight glass is flashing or showing low charge.
Check that suction pressure isn’t too low.
Check that compressor reed valves aren’t bad. Look for high suction/low head pressure. Perform pump-down.

21

TROUBLESHOOTING – EVAPORATOR SYSTEM (TRAINED SERVICE PROVIDERS ONLY)

CONDITION Low Suction Pressure

TROUBLESHOOTING 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.

High Suction Pressure

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. 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.

22

SERIAL LABEL LOCATION & INFORMATION LISTED / TECHNICAL INFO & SERVICE
Serial Label Location & Information Listed / Technical Information & Service
Serial labels are located near the electrical access on your case. Serial labels contain electrical, temperature & refrigeration information, as well as regulatory
standards to which the case conforms. 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 —-23

Read And Save These Instructions – Page 1 of 3

Integrated Electronic Microprocessor Controller

Programming The Instrument
To Modify Defrost, Differential and Other Parameters

Prg
mute aux

Prg Set 1. Press & hold “Prg” & “SET” keys together for at least five (5) seconds; display

mute

will flash “0,” representing password prompt.

Set def

aux 2. Press until password “22” is reached.

How To Change Reading

Set 3. Press “SET” key to confirm password.

From Fahrenheit (°F) To Celsius (°C)

def 4. Press or to reach a category to aux be modified.
Set 5. Press “SET” to modify selected parameter.

Prg

1. Press and hold “Prg” and “SET” keys
Set together for at least 5 seconds; display will

mute

show “0” (password prompt).

aux 2. Press until password “22” is reached.

def 6. Increase or decrease the value using aux the or button respectively.
Set 7. Press the “SET” key to temporarily save the
new value and return to the parameter display.
Prg 8. Press & hold the “Prg” key for 5 full seconds
to save changes. This will also mute the audible mute alarm (buzzer) and deactivate the alarm relay.
Warning! Save Your Parameter Settings! 1. To store the new parameter values, PRESS and HOLD the “Prg” key for at least 5 seconds. 2. All modifications made to parameters will be lost if you do NOT press a button within 60 seconds. Should this “timeout” occur, normal operational settings (prior to modifications being made) will resume. 3. If the instrument is switched off before pressing the “Prg” key, all modifications to parameters will be lost.

Set 3. Confirm by pressing “SET” key.

def 4. Press or until reaching the aux parameter “/ 5.”

Set 5. Press “SET” to modify this selected parameter.

aux

def

6. Press or to change value to desired setting: “0” for Celsius (°C) or “1” for Fahrenheit (°F).

Set

7. Press “SET” key to temporarily save the new value and return to the display of the parameter.

Prg 8. Press & hold “Prg” key for 5 full seconds to
save changes. Note! All values will automatically mute convert to new scale. No conversion is required.

To Activate Manual Defrost

def

Press and hold “def” key for at least 5 seconds.

To Reset Any Alarms With Manual Reset Prg Press and hold the “Prg” and “aux” key for
mute aux at least 1 second.

To Activate / Deactivate Auxiliary Output

aux

Press and hold the “aux” key for 1 second.

This data derived from Carel® Controller Material: ir33 +030220441 – rel. 2.0 – 01.05.2006.
Structural Concepts Document – Revision B Date: 4/25/2019

24

Read And Save These Instructions – Page 2 of 3
Integrated Electronic Microprocessor Controller
User Interface – Display

Summary Table of Alarm and Signals: Display, Buzzer and Relay

This data derived from Carel® Controller Material: ir33 +030220441 – rel. 2.0 – 01.05.2006.
Structural Concepts Document – Revision B Date: 4/25/2019

reset alarms w/manual reset / reset HACCP alarms / reset temp. monitoring

25

Read And Save These Instructions – Page 3 of 3

Integrated Electronic Microprocessor Controller
Summary Table of Operating Parameters

CODE

PARAMETER

UOM* TYPE MINIMUM MAXIMUM DEFAULT

/5

Select Celsius (°C) or Fahrenheit (°F) flag

C

0

1

/c1

Calibration of probe 1

°C/°F C

-20

/c2

Calibration of probe 2

°C/°F C

-20

St

Temperature set point

°C/°F F

r2

rd

Control delta

°C/°F F

20

dl

Interval between defrosts

hours F

0

dt1 End defrost temperature, evaporator °C/°F F

-50

dP1 Maximum defrost duration, evaporator min

F

1

d6

Display on hold during defrost

–

C

0

20

20

For Case

Specific

Defaults

See Serial

r1

Label

Located

Near

Electrical

0.1

Access

On Your

Case.

250

For

Additional

Technical

Information

200

Call

Structural

Concepts

Technical

250

Service

Dept. at

1(800)

433.9490

2

Ext. 1

dd

Dripping time after defrost

min

F

0

15

d/1

Display of defrost probe 1

• Unit Of Measure

°C/°F F

–

–

This data derived from Carel® Controller Material: ir33 +030220441 – rel. 2.0 – 01.05.2006.
Structural Concepts Document – Revision B Date: 4/25/2019

2266

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.)

LIMITED WARRANTY
Overview: All sales by Structural Concepts Corporation (hereafter referred to as “SCC”) are subject to the following limited warranty. “Goods” refers to the product or products being sold by SCC. Warranty Scope: Warranty is for equipment sold in the United States, Canada, Mexico and Puerto Rico. Equipment sold elsewhere may carry modified warranties. Warranty; Remedies; Limitations: The limit of liability of SCC toward the exchange cost of the original compressor motor (and/or any other components) is one year parts and labor. If any Goods are found to be of faulty material or workmanship within one year of the original F.O.B. (free on board) unit shipment, SCC will, at its option (after inspection by an authorized representative), replace or pay the reasonable cost of replacement of the faulty Goods. If warranty claim is not made within this one year time period, SCC is not bound to warrant Goods. A motor-compressor (and/or any other components) replaced during the warranty shall not exceed manufacturer’s current established wholesaler’s exchange price. If replacement motor-compressor (and/or other components) is available via storage facility, parts truck, etc., SCC mandates that readily accessible replacement components be used toward repair of Goods; in such instances, SCC will replace such equipment (at its own expense) after confirmation of its use/placement on defective unit. SCC shall not be charged an additional fee, up-charge or expense for such replacement Goods. If SCC is unable to repair or replace the defective Goods, SCC shall issue a credit to the Purchaser for full or partial purchase price, as SCC shall determine. The replacement or payment in the manner described above shall be the sole and exclusive remedy to Purchaser for a breach of this warranty. If any Goods are defective or fail to conform to this warranty, SCC will furnish instructions for their disposition. No Goods shall be returned to SCC without its prior consent. SCC’s liability for any defect in the Goods shall not exceed the purchase price of the Goods. SCC SHALL HAVE NO LIABILITY TO PURCHASER FOR CONSEQUENTIAL DAMAGES OF ANY KIND WHATSOEVER, INCLUDING, BUT NOT LIMITED TO, PERSONAL INJURY, PROPERTY DAMAGE, LOST PROFITS, OR OTHER ECONOMIC INJURY DUE TO ANY DEFECT IN THE GOODS OR ANY BREACH OF SCC, SCC SHALL NOT BE LIABLE TO THE PURCHASER IN TORT FOR ANY NEGLIGENT DESIGN OR MANUFACTURE OF THE GOODS, OR FOR THE OMISSION OF ANY WARNING THEREFROM. SCC shall have no obligation or liability under this warranty for claims arising from any other party’s (including Purchaser’s) negligence or misuse of the Goods or environmental conditions. This warranty does not apply to any claim or damage arising for or cause by improper storage, handling, installation, maintenance, or from fire, flood, accidents, structural defects, building settlement or movement, acts of God, or other causes beyond SCC’s control. Except as expressly stated herein, SCC makes no warranty, express, implied, statutory or otherwise as to any parts or goods not manufactured by SCC. SCC shall warrant such parts or Goods only (I) against such defects, (II) for such periods of time, and (III) with such remedies, as are expressly warranted by the manufacturer of such parts of Goods. Notwithstanding the foregoing, any warranty with respect to such parts of Goods and any remedies available as a result of a breach thereof shall be subject to all of the procedures, limitations, and exclusions set forth herein. THE WARRANTIES HEREIN ARE IN LIEU OF ALL WARRANTIES, EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE. IN PARTICULAR, SCC MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. No representative, agent or dealer of SCC has authority to modify, expand, or extend this Warranty, to waive any of the limitations or exclusions, or to make any different or additional warranties with respect to Goods. Period of Limitations: No claim, suit or other proceeding may be brought by Purchaser for any breach of the foregoing warranty or this Agreement by SCC or in any way arising out of this Agreement or relating to the Goods after one year from the date of the breach. In the interpretation of this limitation on action for a breach by SCC, it is expressly agreed that there are no warranties of future performance of the goods that would extend that period of limitation herein contained for bringing an action. Indemnifications: Purchaser agrees to indemnify, hold harmless, and defend SCC if so requested, from any and all liabilities, 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 exercised from time to time. In a proceeding or action relating to the breach of this Agreement by Purchaser, Purchaser shall reimburse SCC for reasonable costs and attorney’s fees incurred by SCC. No waiver by SCC of any breach of Purchaser shall be effective unless in writing nor operate as a waiver of any other breach of the same term thereafter. SCC shall not lose any right because it has not exercised it in the past. Applicable Law. This Agreement is made in Michigan; it is governed by and interpreted according to Michigan law. Any lawsuit arising out of this Agreement or the Goods may be handled by a federal or state court whose district includes Muskegon County, Michigan, and Purchaser consents that such court shall have personal jurisdiction over Purchaser. LED Lighting Components Within Lighting System: Supermarket: 5-year LED warranty from date of shipment. Foodservice: 2-year LED warranty from date of shipment. After one year, warranty does not include labor or other costs incurred for diagnosing, repairing, removing, installing, shipping, servicing, or handling of either defective part or replacement parts. Remedy of repair or provision of a replacement part without charge shall be the exclusive remedy for any warranty claim. The replacement LED and/or power supply assumes the unused portion of warranty remaining on unit(s). A 90-day warranty will apply for any LED sold as a service part. Warranty claim must include serial and model number of unit as well as date code on defective LED lighting component(s). Manufacturer may request return of defective part(s) at customer’s expense to initiate claim. Glass Material: Glass (UV-bonded glass, glass sneeze guards, glass enclosures, glass held in place via posts, etc.) is only warranted to FIRST POINT OF DELIVERY. Miscellaneous: If any provision of this Agreement is found to be invalid or unenforceable under any law, the provision shall be ineffective to that extent and for the duration of the illegality, but the remaining provisions shall be unaffected. Purchaser shall not assign any of its rights nor delegate any of these obligations under this Agreement without prior written consent of SCC. This Agreement shall be binding upon and inure to the benefit of SCC and Purchaser and each of their legal representatives, successors and assignees. SCC warrants its products to be free of defects in materials and workmanship under normal use and service for a period of one (1) year from the date of delivery. This warranty is extended only to the original purchaser for use of the Goods. It does not cover normal wear parts such as plastic tongs, tong holders, tong cables, bag holders, or acrylic dividers. General Conditions: All service labor and/or parts charges are subject to approval by SCC. Contact Customer Service Dept. in writing, by phone, fax or email. All claims must contain the following information: (1) model & serial code number of equipment; (2) the date and place of installation; (3) the name and address of the agency which performed the installation; (4) the date of the equipment failure; and (5) a complete description of the equipment failure and all circumstances relating to that failure. Once the claim has been determined to be a true warranty claim by SCC’s Customer Service Department, the following procedure will be taken: (1) replacement parts will be sent at no charge from SCC on a freight prepaid basis; (2) reimbursement for service labor will be paid if the following conditions have been met – (a) prior approval of service agency was awarded from the Customer Service Department; and (b) an itemized statement of all labor charges incurred is received by the Customer Service Department. The cost of the service labor reimbursement will be based on straight time rates and reasonable time for the repair of the defect. If problems occur with any compressor, notify SCC’s Customer Service Department immediately. Any attempt to repair or alter the unit without prior consent from the Customer Service Department will render any warranty claim null and void. This warranty and protection plan does not apply to any condensing unit or any part thereof which has been subject to accident, negligence, misuse, or abuse, or which has not been operated in accordance with the manufacturer’s recommendations or if the serial number of the unit has been altered, defaced, or removed. One Year Limit of Liability: After SCC’s one-year parts and labor warranty on the original F.O.B. (free on board) unit has expired, SCC is not liable for either the equipment or labor costs of repairing or replacing the motor compressor, nor any other components that were included in the original F.O.B. (free on board) unit.

SCC Warranty Revision K Date: 12.10.2018

References

• P65Warnings.ca.gov
• Delivering Fresh. Always. | Structural Concepts

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