Structural Concepts HMO5136R Operator’s Manual

READ AND SAVE THESE INSTRUCTIONS

INST ALLATION AND

OPERATING MANUAL

SELF-SERVICE REFRIGERATED BAKERY MERCHANDISER

PN 54190

HMO7536R HMO3936R

HMO7536R

With Optional Security Grid

HMO5136R.4716 Standard With

Steps and Night Curtain

Model HMO3936R…………………………………………....38 3/4”L* x 32”D x 37 3/8”H**

Model HMO5136R.4716………………………….….….......48 3/4”L* x 32”D x 37 3/8”H**

Model HMO7536R……………………………..………….....75 1/8”L* x 32”D x 37 3/8”H”**

*Includes 1” End Panels **Includes Levelers at 1 5/8” Below Base Frame

888 E. Porter Road · Muskegon, MI 49441 Phone: [phone] Fax: [phone] www.structuralconcepts.com

Rev J Date: 8.23.2013 I:\Oper Manuals - PUB\Harmony\HMO[L]36R_4716_54190.pub

TABLE OF CONTENTS

OVERVIEW AND WARNINGS ……..………………..…….………………………..…………………....…..

CASE REMOVAL FROM SKID [LEVELERS OR CASTERS] ……………………………………………...
INSTALLATION …………………………………………………………………..……...………………..…….
POSITIONING, ALIGNING, LEVELING UNIT, REMOVING FRONT GRILLE …..……………………….
START-UP AND OPERATION ……...….…………...…...…..………………………...………….……..……
MAINTENANCE FUNDAMENTALS …...……………………………………………..…………………..…...

MAINTENANCE FUNDAMENTALS - MODEL HMO5136R.4716 [YOUR MODEL MAY DIFFER] …….
MAINTENANCE FUNDAMENTALS - HONEYCOMB AIR DIFFUSER ……….…………………………...

OPTIONAL NIGHT AIR CURTAIN OPERATING INSTRUCTIONS ……...…………………..…………...
STANDARD NIGHT AIR CURTAIN LOCATION FOR MODEL HMO5136R.4716 ………….…………...
SECURITY GRID OPERATING INSTRUCTIONS [OPTIONAL] ………….………………..……………...
SERIAL LABEL INFORMATION & LOCATION …..………………………………………………………….
CLEANING SCHEDULE [TO BE PERFORMED BY STORE PERSONNEL] …………………….……...
PREVENTIVE MAINTENANCE [TO BE PERFORMED BY TRAINED SERVICE PROVIDER] ………..
TROUBLESHOOTING [GENERAL OVERVIEW] …………..……………………………………….……….

TROUBLESHOOTING: REFRIGERATION PACKAGE OVERVIEW ………………..……..…….……….
TROUBLESHOOTING: COMPRESSOR NOT ON / NO DISPLAY ON CONTROLLER ……..…...…….

TROUBLESHOOTING: LIGHTS DO NOT OPERATE …………………………...………………………....

CAREL® CONTROLLER - PROGRAMMING THE INSTRUMENT ……....……………………………….

CAREL® CONTROLLER - USER INTERFACE, SUMMARY TABLES OF ALARMS & SIGNALS …….
CAREL® CONTROLLER - Summary Table of Operating Parameters (After Programming Key) ……...

TECHNICAL SERVICE CONTACT INFORMATION & WARRANTY INFORMATION ……...…….….....

3-4

5

6-9

10
11
12

13
14

15

16-17

18
19
20

21-22

23
24
25
26

27
28
29

30

2

OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING / PLUGS - PAGE 1 of 2

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

prior to being placed in merchandiser.

 Temperature on control display will read below

freezing. This is normal and does not reflect your
product temperature.

 Units are set up to defrost every 4 hours. It is normal

to see brief temperature spikes into the 50 °F range at
this time. Product will remain cold during the short
time it takes for the unit to defrost.

 Evaporator fans run constantly as a part of the defrost

process.

 A/C adjustments at night will cause condensation

issues on refrigerated display units.

 Cases should be installed and operated according to

this operating manual’s instructions to insure proper
performance. Improper use will void warranty.

CASE TYPE

This unit is designed for the display of products in ambient

store conditions where temperatures and humidity are
maintained within a specific range.

 For Type 1 Conditions (this case) ambient conditions

are to be at 55% maximum humidity and maximum
temperatures of 75 °F [24 °C].

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 sheet contains important warnings to prevent

injury or death.

 Please read carefully!

PRECAUTIONS, CORD/PLUG MAINTENANCE &
WIRING DIAGRAM INFORMATION

 See next page for PRECAUTIONS, CORD/PLUG

MAINTENANCE and WIRING DIAGRAM information.

WARNING

ELECTRICAL

HAZARD

WARNING

KEEP
HANDS
CLEAR

WARNING

HOT

SURFACE

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

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 is Hot!

Disconnect and allow to cool

before cleaning or removing from case.

3

OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING / PLUGS - PAGE 2 of 2

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.

CAUTION! LAMP REPLACEMENT GUIDELINES

CAUTION

LED lamps reflect specific size, shape and overall design.

Any replacements must meet factory specifications.

CAUTION! GFCI BREAKER USE RECOMMENDATION

If N.E.C. (National Electric Code) or your local code

requires GFCI (Ground Fault Circuit Interrupter) protection,

the use of a GFCI breaker

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.

WIRING DIAGRAM

 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.

is strongly recommended.

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 heat source

(ovens, fryers, etc.).

 Tile floors, low ceilings or small rooms increase noise level. Whisper

Cool compressor blankets or remote units resolve noise level issues.

 Keep at least 8-inch clearance above unit for air discharge

(self-contained units only).

CAUTION! CHECK BOTH CONDENSER PAN AND OVERFLOW PAN

Water on flooring can cause extensive damage!

 Condenser pan MUST BE positioned directly under condensate drain.
 Electric coil overflow pan MUST HAVE single plug connected to its box.

Before powering up unit, check the following:

4

CASE REMOVAL FROM SKID (LEVELERS OR CASTERS)

1. Removing Case Shipping Brackets That Are Attached To Skid

 Remove screws holding Case Shipping Brackets to skid.
 Remove Case Shipping Brackets from Skid.
 See illustrations below. Note: Shipping Brackets will vary in size, shape, material and location

depending upon case type and model.

Various Types Of

Case Shipping

Brackets

2. Remove Case (With Levelers) From Skid

 To prevent damage, support case while sliding it

toward edge of skid.

 When case is at edge of skid, carefully lower to

floor (so two levelers rest on floor).

 Carefully slide skid out from under case.
 After removal of case from skid, place into

position.

 Note:Illustration below reflects general outline of

sample case and does not reflect any particular
model or options).

Support

Carefully
Slide Skid
Out From
Under Case

case while
removing
from skid.

3. Remove Case (With Casters) From Skid
A. Place ramp up against skid (to allow case to

smoothly slide off from skid).

B. Maintain support of case at all times or center of

gravity may cause case to fall.

C. Unlock Casters. Slide unit to rear of skid. Slide

down ramp and off from skid.

 Note:Illustrations reflect general outline of

sample case and may not reflect your particular
model or options).

Support
case
while
sliding
down
ramp.

5

Ramp

INSTALLATION

Installation

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

1. Position and Level Units

Position Units. Align multiple units carefully in
areas A, B, and C.

A

B

C

2. Bolting Units Together

Bolt units together at holes indicated at right.
Note

: View at right has shelving removed for
illustrative purposes only. Bolt holes to be at
7 locations (shown at right).

 Note: Use 1/4-20 X .75 bolt at hole

location holes 2, 5 and 6 ONLY.

 Use 1/4-20 x 2.25” bolts for locations 1, 3,

4.

 Remove decks to access bolt holes 3, 4.
 Note 1: Both Casters and Levelers Option

shown in illustration at right.

 Note 2: Illustration at right may not reflect

every feature or option of your particular
case.

1

2

3

4

6

5

6

INSTALLATION, CONTINUED

3. Electrical Connections (Remote Cases)

Field wiring connection / electrical access location
is at customer-left side of case.

 Single phase leads are provided.
 Connection

4. Connections/Controller/Main Power Switch
(Self-Contained Units)

Controller/Ballast box is at customer rear.

 See illustrations below.
 Below illustrations show layout of controller,

ballasts, main power switch, terminal block, etc.
after removal of controller/ballast box cover.

Controller

Main Power

Switch

HMO7536R Underside View With

Controller/Ballast Box Cover Intact

Ballasts

HMO7536R Underside With

Controller/Ballast Box Cover Removed

7

INSTALLATION, CONTINUED

Case Rear

5. Electrical Connections (Certain Remote Cases)

Field wiring connection / electrical access location is at
customer-left side of case.

 Single phase leads are provided.

6. Evaporator Fan Area

 Illustration below shows front of case with decking

removed.

 See Preventive Maintenance section in this manual

for guidelines on cleaning this area.

Field Wiring Electrical

Connections

Fan Shroud

Fan Blade

Drain

8

INSTALLATION, CONTINUED

Honeycomb Air Diffuser

 Honeycomb is located in discharge air duct.
 From inside lower refrigerated area, locate the

two most forward screws which secure the lower
light & discharge panel.

 Remove the two most forward screws; panel

must hang down supported by the rear screws.

Do not force panel lower.

See MAINTENANCE FUNDAMENTALS -
HONEYCOMB AIR DIFFUSER section in this

manual for complete instructions on removal and
installation of honeycomb.

Honeycomb

Honeycomb
Retainer

9

POSITIONING, ALIGNING, LEVELING UNIT, REMOVING FRONT GRILLE

1. Position & Align Case Alongside Other
Cases

 Before adjusting levelers, make certain that the

case is in proper position and, if required,
aligned with adjoining case.

 This may require the repositioning of the case

you are installing or

the already positioned

case.

2. Adjust Levelers

 After case is in proper position, adjust case so

it is level and plumb (see illustration at right).

 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 neces-

sary 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; it may chip.
 Use Pry Bar ONLY on Base Frame to avoid

damaging case.

 See illustration and photos at right. Note:

Depending upon options and features chosen,
illustrations may not exactly reflect your
particular case’s features.

3. Removing Front Grille (If Necessary)

 Remove screws located at underside of front

panel to access drain or refrigeration lines.
Front Grille will fall forward and can be lifted up



and away from case.
Replace Front Grille in reverse order it was



removed from case.

 See illustration at lower right (may not exactly

reflect every feature or option of your case).

Adjustable

Wrench

Pry Bar

Leveler

Base

Frame

(3) Front Grille

Retainer Screws

10

START-UP AND OPERATION

Merchandiser Start-Up

 Remote Units: Case is hard-wired. When power is

supplied, case will power-up.

 Self-Contained: Main Power switch is located at

case rear, lower right. See illustration below.

 Self-Contained: Controller is located at case rear,

lower right. See illustration below.

 Turn on the lights. Whether Remote or

Self-Contained, light switch is located on inside
of case at top right, from case rear. See illustration
at top right.

 All lights should come on at same time. First time

lighting may require a short warm up period for the
bulbs. Slightly dim or a flickering of new bulbs is
normal.

 The lighting is wired in series so all lights must be

plugged in or receptacles capped for case lights

to turn on.

Cap

Plug

Receptacle

11

Main Power Switch

Temperature

Controller

MAINTENANCE FUNDAMENTALS

Shelf Assembly Removal

 Remove glass shelves
 For lighted shelving, unplug the light cord.
 Lift light shelf straight up to separate from

brackets.

 Remove rear shelf support
 Remove brackets. Note it may be necessary

to remove the nylon shipping bracket retainer.
Pliers will be required to accomplish this task.

Light Fixture
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

the back side at the bulb ends and pulling the
remaining contact from the 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)
pinned contacts into the sockets.

 Rotate the remaining bulb contacts (1/4 turn)

into the remaining lamp-mounting socket
contacts.

 See illustration below.

Glass

Shelving

Bracket

Retainers

Light
Fixture

Shelf Bracket

Rear Shelf Support

Shelf Bracket

Light Socket

Lamp Pins

Light Fixture

Sample light fixture shown above. To remove
lamp, simply rotate lamp clockwise and out.
To replace, place one set of pins into slots and
rotate second set of pins into slots.

12

MAINTENANCE FUNDAMENTALS - MODEL HMO5136R.4716 [YOUR MODEL MAY SLIGHTLY DIFFER]

Step Assembly Removal

 Step assembly is adjustable and is NOT held in

place by screws or bolts.

 Simply lift up and out.
 Caution! Remove carefully to avoid scratching or

marring inside of case.

 See Cleaning Schedule section in manual for

specifics on cleaning methods and frequency.

LED Light Fixture Removal

Removal of lamp:

 This case is provided with LED lights which will

rarely require change-out.

 Contact Structural Concepts’ Technical Service

Department for replacement parts (see Technical
Service section of this operating manual).

Replacement of lamp:

 To replace LED Light Fixture, disconnect the

existing LED light from its brackets and
self-adhesive tape. Replace.

 Note: LED Light and Plug must be connected in

a specific manner or they will not work. Oval
edge of plug must connect to oval edge of LED
light. See photos below-left.

LED Power Supply Access

 Disconnect electrical power from unit.
 LED driver is located in electrical box (in

same box temperature controller is located)

Removable

Step Assembly

LED’s Oval Form

Plug’s Oval

Form

13

MAINTENANCE FUNDAMENTALS - HONEYCOMB AIR DIFFUSER

Preventive maintenance should be performed
every 30 days unless conditions warrant a
more frequent replacement cycle.

Honeycomb Air Diffuser Removal

A. Wedge non-metallic device of suitable strength
(such as a ballpoint pen) between honeycomb and
end panel.
Caution
(that prevents condensation on the lamp assembly).
B. Apply pressure to collapse the honeycomb to
allow it to be pulled out of honeycomb retainer.
C. Pry downward and away from honeycomb
retainer.

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’.

Honeycomb Air Diffuser Installation

D. Squeeze honeycomb into the honeycomb retainer.
E. Carefully slide honeycomb into place.
F. Adjust honeycomb so that it fits flat
retainer. It must not be wavy or out of position.

Note: For honeycomb air diffusers in other locations,
these same general instructions apply.

! Use care not to dislodge the heating wire

against

Removable

Honeycomb

A

B

F

D

C

E

14

OPTIONAL NIGHT AIR CURTAIN INSTALLATION & OPERATING INSTRUCTIONS

Night Air Curtain Installation & 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 centering night
curtain along top-front of case as shown in illustration below. Attachment Magnets will
hold Night Air Curtain firmly in place. To attach to display case, place night curtain on
top of case as shown. Mark “key slot” locations using night curtain as a template (you
may have to retract the curtain from housing to reveal “keyslots”. Drill Ø11/32” holes
in top board 1/2” deep. Press “finserts” (shown below) into holes. Carefully tap in with
flat object to prevent top board damage. Attach Night Air Curtain with #10-32 screws.

3. Grasp handle and pull downward to desired location INSIDE

4. To return Night Air Curtain to its retracted position, grasp handle, lift up and away from
its magnetic attachment and carefully wind Night Air Curtain back into roll.

5. Caution!
Doing so can eventually destroy Night Air Curtain’s tension and retractability.

6. To entirely detach Night Air Curtain from case, retract curtain (to access keyslots),
remove screws. Lift Night Air Curtain upward and away from case.

Do not allow spring-loaded Night Air Curtain to freely snap back into roll.

acrylic air deflector.

NOTE: THE

BELOW

ILLUSTRATION

MAY NOT
EXACTLY
REFLECT

EVERY

PARTICULAR

CASE’S

FEATURES OR

OPTIONS.

View of Night Air Curtain

(Topside / Attached)

Night Air Curtain

Retraction Magnets

Acrylic

Air Deflector

Night Air Curtain

Retraction Magnets

Attachment Points

(Along Plate Outside

Acrylic Air Deflector

View of Night Air Curtain

(Underside / Detached)

Night Air Curtain
Retraction Magnets

Night Air Curtain

Keyslots

“Finsert” (to

be inserted in

top board)

NOTE: SEE NEXT PAGE FOR

MODEL HMO5136R.4716

NIGHT AIR CURTAIN LOCATION

#10-32 screw

(to be

inserted

through Night

Air Curtain

Keyslots and

into “Finsert”)

15

STANDARD NIGHT AIR CURTAIN LOCATION FOR MODEL HMO5136R.4716

NOTE: BELOW ILLUSTRATION APPLIES

TO MODEL HMO5136R.4716 ONLY.

View of Night Air Curtain

(Topside / Attached)

Night Air Curtain

Retraction Handle

Night Air Curtain

Retraction Magnets Attachment

Points (Along Plate Outside

Acrylic Air Deflector)

Acrylic

Air Deflector

16

SECURITY GRID OPERATING INSTRUCTIONS [OPTIONAL] - PAGE #1 of 2

Initial Positioning and Installation of Security Grid

1. After hoisting the Security Grid directly over Air Return Cover, drop Security Grid
Positioning Rods into the Air Return Cover Holes (see enlarged view below).

2. After securely positioned in the Air Return Cover Holes, carefully and slowly lean
the Security Grid back against the Security Brackets.

3. The next page in this manual will show how to secure the top of the Security Grid
to the Security Brackets.

NOTE:

ILLUSTRATIONS

MAY NOT
EXACTLY

REFLECT EVERY

PARTICULAR

CASE’S

FEATURES

Security Grid
Positioning Rod

Air Return
Cover Hole

Enlarged View (Above)

 Enlarged View (above) shows Security Grid

Positioning Rod slid into Air Return Cover Hole.

 There are two Security Grid Positioning Rods along

each Security Grid.

 Security Grid Positioning Rods must be securely in

place prior to locking with Padlocks.

17

SECURITY GRID OPERATING INSTRUCTIONS [OPTIONAL] - PAGE #2 of 2

Securing Security Grid Into Place and Locking

1. After leaning the Security Grid back against the two Security Brackets, slide the Padlocks
through the Security Grid and the Security Brackets.

2. Securely lock the Padlocks (one Key fits both Padlocks).

Removing and Storing Security Grid and Locks

1. Unlock and remove Padlocks. Lean Security Grid forward. Lift upward and out of Baffle
Airflow Slots. Tabs fit into (and slide out of) baffle slots as in other units. See next page
tab and baffle slot locations and illustrations.

2. Store Security Grid, Padlocks and Keys in a secure location to prevent theft or damage.

Security

Grid

Security

Bracket

Security

Grid

Security
Grid

Enlarged View (At Left)

 Enlarged View (at left) shows Padlock

through Security Grid and Security
Bracket.

 There are two Security Brackets for

each Security Gred.

NOTE:

ILLUSTRATIONS

MAY NOT
EXACTLY

REFLECT EVERY

PARTICULAR

CASE’S

FEATURES

Padlock

18

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.

Y

S

A

SA

M

P

L

MPLE

E

N

O

ON

L

L

Y

O

Y

L

NL

LY

Y

A

S

----- Sample Serial Label For Refrigerated Case -----

S

A

MP

SA

S

LE

AM

M

O

LE

P

M

ON

P

LE ON

PLE

Y

L

N

----- Sample Serial Label For Non-Refrigerated Case -----

19

CLEANING SCHEDULE [TO BE PERFORMED BY STORE PERSONN EL]

Cleaning Daily Weekly Monthly Task

Clean Case Exterior

X Clean wood, laminate and painted surfaces with a

X Open rear door and clean with a household or

Clean Case Interior

X Model HMO5136R.4716 only: Wipe down with a

X

X

Clean side glass, front curved glass and sliding rear

doors (glass) with a household or commercial glass
cleaner and soft cloth.

warm soap and water solution and soft cloth. Never
use wire cloth or abrasive cleaners on case.

commercial glass cleaner.

The deck can be wiped down with a warm soap and

water solution and soft cloth.

warm soap and water solution and soft cloth.

X Remove the deck and clean with soap and water

solution and soft cloth.

X Clean the acrylic air deflector (at case front) and

perforated Plexi-glas plenum (at case rear) with soap
and water solution and soft cloth. Never use
ammonia-based cleaners on acrylic or Plexi-glas.

X Model HMO5136R.4716 only: Remove step

assembly from unit and clean with mild soap and
warm water solution and brush. Dry thoroughly and
return to case. Caution
assembly carefully to avoid scratching or marring
inside of case.

! Remove (and return) step

20

PREVENTIVE MAINTENANCE [TO BE PERFORMED BY TRAINED SERVICE PROVIDER] - Page 1 of 2

PREVENTIVE

MAINTENANCE

Case Exterior Monthly Condensing Coil:

Quarterly Clean Sweep™ Condensing Coil: Disconnect power from case

FREQUENCY INSTRUCTIONS

 Remove rear grille (by removing 4 screws).
 Use air pressure or industrial strength vacuum; clean dust and dirt

that may collect on the Condenser Coil. See illustration below.

 Caution! Coil fins are sharp. Handle with care!
 Replace Rear Grille to case (4 screws).
 See illustration below.

before cleaning Clean Sweep™ Condenser Coil!

 Remove Rear Grille (by removing 4 screws).
 Slide/Roll out condensing unit assembly.
 Remove the four (4) screws holding the Clean Sweep™ rails intact.
 Remove the Clean Sweep™ rail.
 Wash rails’ 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.

 Clean Condensing Coil: Use air pressure or industrial strength

vacuum; clean the dust and dirt that may collect on the Condenser
Coil.

 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 Rear Grille to case (4 screws).
 See photos below.

ng

i

s

n

de

n

Co

(4) Screws

--- Above photos are taken after rear grille has been removed from case ---

21

Coil

Brushes

Rail

PREVENTIVE MAINTENANCE [TO BE PERFORMED BY TRAINED SERVICE PROVIDER] - Page 2 of 2

WARNING! TURN OFF CASE BEFORE PERFORMING PREVENTIVE MAINTENANCE!

PREVENTIVE

FREQUENCY INSTRUCTIONS

MAINTENANCE

Case Exterior Quarterly Compressor Area: Disconnect power from case before cleaning

Condenser Coil!

 Slide/Roll out from under case.
 Use moist cloth to wipe off dust & debris that collects on various

parts. See illustration below.

Quarterly

Under Case Cleaning: Once refrigeration package is clear of unit,

vacuum under case to remove all dust and dirt that may collect under
case.

Case Interior Quarterly Drain, Coil, Fan Blades, Motors, Brackets:

Disconnect power from the case before cleaning the Drain, Coil, Fan
Blades, Motors and Brackets!

 Remove Decking, Sub-Deck and Fan Shroud.
 Use vacuum to clean Evaporator Coils.
 Clean Tub, Coil and Drain with warm water, clean cloth, brush

and mild soap solution.

 See below for specific tub flushing instructions.
 Remove any debris that may clog drain.
 Clean Fan Blades, Motors and Brackets by wiping down with

moist cloth.

Quarterly Tub:

Disconnect power from the case before cleaning the tub!

Vacuum tub under deck or flush with water if necessary. To flush out
the tub, disconnect power to the case. Remove the deck and fan
shroud. Direct drain to floor drain or a bucket and hose out the tub.
Run hose into the drain to flush out debris.

Quarterly

Honeycomb: Remove the honeycomb. Vacuum, then clean with

warm water and soap. See instructions in case operation section of
this manual. See MAINTENANCE FUNDAMENTALS -
HONEYCOMB AIR DIFFUSER section in this manual for specifics.

22

TROUBLESHOOTING [GENERAL OVERVIEW]

Product is Drying Out
Doors/Glass Won’t Shut

Properly
Case Not Properly Lining

Up
System is not Operating

Condensing Unit Not Op­erating.

Case Lights Not Working

TSP*: Check the relative humidity in the store.
TSP*: Confirm that the case is aligned, level and plumb.

TSP*: See Installation section of Manual for instructions on properly aligning
case and adjusting levelers (alongside other cases).

Confirm that the utility power is on.
Confirm that the MAIN power switch is on.
TSP*: Check the circuit breaker box for tripped circuits.
If cord is used, confirm that unit is properly plugged in.
Controller is in defrost mode (not an alarm). Compressor is running in a

normal condition. See the Temperature Controller section of this Manual.
Check that the power is turned on.
TSP*: Review factory time settings on the Temperature Controller.
Be sure ALL lights are plugged in or receptacles capped.
Check bulbs for proper installation and connection.
Check for burned out bulbs.
Clean dirt and dust from the bulbs to prevent flickering.

Fans Not Working

Not Holding Temperature

After performing all other checkpoints, if lights are still not working check for
faulty ballasts; this should be performed by a certified electrician.

TSP*: Check that fans are plugged in at the fan shroud.
TSP*: Check for foreign material obstructing fan performance.
The temperature will change during defrost mode but will return to normal.
Warm product may have been added to the case. Note: Product must be

pre-chilled to 41 °F [5 °C] or less prior to being placed in merchandiser.
Discharge air must not be disrupted or blocked by product.
TSP*: Check that the coil fans are working.
TSP*: Check the evaporator coil for ice build up.
Check that the case is not in the sun or near a heat or air-conditioning vent.

Check that case is NOT located near outside doors. Wide temperature
fluctuation can challenge case’s ability to hold internal product temperatures.

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

*TSP = Trained Service Providers

23

TROUBLESHOOTING: REFRIGERATION PACKAGE OVERVIEW: PAGE 1 of 3

Refrigeration Package / Compressor Component Locations

 Illustration below shows refrigeration package, compressor,

condenser pan, fans, blades, etc.

 See pages that follow for troubleshooting instructions.
 Refrigeration unit pulls out from back of unit for service.
 Only refrigeration contractors are to access refrigeration package.

NOTE: THE BELOW

ILLUSTRATION MAY

NOT EXACTLY REFLECT

YOUR PARTICULAR

CASE’S FEATURES OR

Condenser Package

Accessible at Case Rear

OPTIONS.

Condenser Coil

Fans & Blades

Condenser
Coil Cover

Electric Coil
Overflow Pan
& Electrical
Box

Compressor

and Start

Components

Filter

Dryer

Sight Glass

24

Compressor Electrical

Box (Containing

Start Relay)

Condenser

Pan

TROUBLESHOOTING: COMPRESSOR NOT ON / NO DISPLAY ON CONTROLLER: PAGE 2 of 3

Troubleshooting

Troubleshooting Issue: Compressor will not turn on

1. Confirm that main power switch is ON (at case
rear). See photo at right.

2. Check for proper voltage. Make certain wall
outlet is energized and providing proper voltage
[as specified on serial label].

3. Determine where power is lost (see wiring
diagram in this Troubleshooting Guide).

A. Check for loose wires/connectors.
B. Check power going into temperature
controller.
C. Check power coming from temperature
controller.
D. Check power at contactor.
E. Check power at start components.
F. Check power at compressor.
G. Check continuity through pressure
controls’ high and low pressure.

Troubleshooting Issue

: No display on controller.

Note: Settings are programmed at factory.

 No adjustments should be required.
 Set point will be below freezing.

4. Check that power switch is turned on.

5. Check for loose connections at the back of the
temperature controller.

Temperature

Controller

1 & 4. Main Power

Switch

3.D. Contactor

5. Temperature
Controller

Connectors

25

Top View of LED Controller

in LED Controller Box

TROUBLESHOOTING: LIGHTS DO NOT OPERATE: PAGE 3 of 3

Troubleshooting

Troubleshooting Issue: Lights do not operate.

5. See illustration of LED socket (behind
honeycomb).

6. Verify that the plug connects to LED light socket
properly.

 A. Important! The plug’s oval form MUST
be inserted into the LED’s oval form.
B. The plug’s flat form must be inserted
into the LED’s flat form.

5. LED socket

6.B. Plug’s
Flat Form

6.A. LED’s

Oval Forms

6.B. LED’s
Flat Form

6.A. Plug’s
Oval Forms

26

Read And Save These Instructions - Page 1 of 3

Integrated Electronic

Microprocessor Controller

Programming The Instrument

To Modify The Setpoint

Press and hold the “SET” key for at least 1 second.

Set

Prg

mute

Set

▲

aux

def

▼

▲

aux

3. Quickly press and release the “SET” key again.

Set

To Modify Defrost, Differential, Other Parameters

Prg

mute

2. Confirm by pressing “SET” key.

Set

▲

aux

4. Press “SET” to modify this selected parameter.

Set

▲

aux

Set

7. Press & hold the “Prg” key for at least 5 seconds

Prg

to save changes. This action will also mute the

mute

audible alarm (buzzer) & deactivate the alarm relay.

2. Use arrow keys ▲ ▼ on temperature

def

controller to increase (or decrease) the

▼

setpoint.

1. Press & hold “Prg” & “SET” keys together
for five (5) seconds; display will flash “0”,

Set

representing password prompt.

3. Press ▲ or ▼ to reach the

def

category to be modified.

▼

5. Increase or decrease the value using

def

the ▲ or ▼ button respectively.

▼

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

Prg

mute

Set

▲

aux

Set

▲

aux

Set

Prg

mute

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.

How To Change Reading From
Fahrenheit (°F) To Celsius (°C)

1. Press and hold “Prg” and “SET” keys

Set

together for at least 5 seconds; display

2. Confirm by pressing “SET” key.

4. Press “SET” to modify this selected
parameter.

will show “0” (password prompt).

def

3. Press ▲ or ▼ until reaching the
parameter “/ 5”.

▼

5. Press ▲ or ▼ to change value to

def

desired setting: “0” for Celsius (°C) or

▼

“1” for Fahrenheit (°F).

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

7. Press & hold “Prg” key for at least 5
seconds to save changes.

will automatically convert to new scale. No
conversion is required.

Note! All values

To Activate Manual Defrost

def

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

▼

To Activate / Deactivate Auxiliary Output

▲

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

aux

27

Prg

mute

To Reset Any Alarms With Manual

▲

Reset

aux

Press and hold the “Prg” and “aux”

key for at least 1 second.

Oper Manuals - PUB\Templates\Carel Controller\Carel Controller IR33.pub

This data derived from Carel Material: ir33 +030220441 - rel. 2.0 - 01.05.2006

Read And Save These Instructions - Page 1 of 3

Integrated Electronic

Microprocessor Controller

Programming The Instrument

To Modify The Setpoint

Press and hold the “SET” key for at least 1 second.

Set

Prg

mute

Set

▲

aux

def

▼

▲

aux

3. Quickly press and release the “SET” key again.

Set

To Modify Defrost, Differential, Other Parameters

Prg

mute

2. Confirm by pressing “SET” key.

Set

▲

aux

4. Press “SET” to modify this selected parameter.

Set

▲

aux

Set

7. Press & hold the “Prg” key for at least 5 seconds

Prg

to save changes. This action will also mute the

mute

audible alarm (buzzer) & deactivate the alarm relay.

2. Use arrow keys ▲ ▼ on temperature

def

controller to increase (or decrease) the

▼

setpoint.

1. Press & hold “Prg” & “SET” keys together
for five (5) seconds; display will flash “0”,

Set

representing password prompt.

3. Press ▲ or ▼ to reach the

def

category to be modified.

▼

5. Increase or decrease the value using

def

the ▲ or ▼ button respectively.

▼

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

Prg

mute

Set

▲

aux

Set

▲

aux

Set

Prg

mute

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.

How To Change Reading From
Fahrenheit (°F) To Celsius (°C)

1. Press and hold “Prg” and “SET” keys

Set

together for at least 5 seconds; display

2. Confirm by pressing “SET” key.

4. Press “SET” to modify this selected
parameter.

will show “0” (password prompt).

def

3. Press ▲ or ▼ until reaching the
parameter “/ 5”.

▼

5. Press ▲ or ▼ to change value to

def

desired setting: “0” for Celsius (°C) or

▼

“1” for Fahrenheit (°F).

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

7. Press & hold “Prg” key for at least 5
seconds to save changes.

will automatically convert to new scale. No
conversion is required.

Note! All values

To Activate Manual Defrost

def

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

▼

To Activate / Deactivate Auxiliary Output

▲

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

aux

28

Prg

mute

To Reset Any Alarms With Manual

▲

Reset

aux

Press and hold the “Prg” and “aux”

key for at least 1 second.

Oper Manuals - PUB\Templates\Carel Controller\Carel Controller IR33.pub

This data derived from Carel Material: ir33 +030220441 - rel. 2.0 - 01.05.2006

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

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

29

SCC TECHNICAL SERVICE CONTACT INFORMATION & WARRANTY INFORMATION

STRUCTURAL CONCEPTS CORPORATION TECHNICAL SERVICE

PHONE NUMBER: 1.800.433.9489 or For Your Master Service Agent See

WWW.STRUCTURALCONCEPTS.COM/Contact/Master_Service_Agents.asp

LIMITED WARRANTY

All sales by Structural Concepts Corporation (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 warranty.
Warranty; Remedies; Limitations. SCC warrants that if any Goods are found by an authorized representative of SCC not to be of good material or workmanship within one

year of the date of shipments SCC will, at its option after inspection by an authorized representative, replace any defective Good or pay the reasonable cost of replacement for
any such defective Goods, provided that written notice of the defect is given to SCC within 30 days of the appearance of such defect. If notice is not given within such period, any
claim for breach of warranty shall be conclusively deemed to have been waived and SCC shall not be liable under this warranty. If SCC is unable to repair or replace the defective
Goods, SCC shall issue a credit to the Purchaser for all or part of the purchase price, as SCC shall determine. The replacement or payment in the manner described above shall
be the sole and exclusive remedy of 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 PURCHASE 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 and shall be 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.

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 this obligations under this Agreement without prior
written 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 assigns.

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 the Customer Service Department in writing or call 231-798-8888.
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.

Limit of Liability. The limit of liability of SCC toward the exchange cost of the original condensing unit, F.O.B. SCC, Norton Shores, MI, of each motor-compressor assembly
replaced during the warranty shall not exceed manufacturer's current established wholesaler’s exchange price and in no case shall the labor of removing or replacing the
motor-compressor or parts thereof be the responsibility of SCC.

30