Structural Concepts HMG7553R Installation Manual

READ AND SAVE THESE INSTRUCTIONS

INSTALLATION &

OPERATING MANUAL

33” and 35” DEEP SERVICE REFRIGERATED DISPLAY CASES

PLEASE NOTE THE FOLLOWING:

1. YOUR SPECIFIC MODEL NUMBER IS ON THE SERIAL LABEL ON CASE REAR (NEAR MAIN POWER SWITCH).

2. SEE “MODELS (AND THEIR RESPECTIVE CASE DIMENSIONS) LISTED IN THIS MANUAL” SECTION FOR
ADDITIONAL INFORMATION REGARDING SPECIFIC CASE DIMENSIONS OF STANDARD MODELS AND

PN 55009

CDRs.

(HMG2642R.4439)

[35” Deep Model]

HMG3953R

(HMG3953R)

[33” Deep Model]

(HMG7553R)

HMG7553R

[33” Deep Model]

(HMG2653R)

HMG2653R

[33” Deep Model]

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

I:\Oper Manual\Standard\Harmony_Service_Refrig_Oper_Manual_55009.pub

Rev A Date: 8.17.2009

TABLE OF CONTENTS

TABLE OF CONTENTS ……………………………………………………………………………………...
MODELS LISTED IN MANUAL (AND DETERMINING THEIR RESPECTIVE CASE DIMENSIONS)
OVERVIEW AND WARNINGS ……………..…….…………………………..………………………...…..

INSTALLATION: SKID REMOVAL, ADJUSTABLE FRONT TOE-KICK / REMOVABLE FRONT
GRILLE...……...…….………………………………………………………………………………………….
INSTALLATION: GLASS SHELVING / ELECTRICAL CONNECTIONS……………………………...…
INSTALLATION: REFRIG. LINES / STUB-UPS / DRAINS / WIRING DIAGRAMS / VENTILATION...
INSTALLATION: ELECTRICAL CONNECTIONS / CASTERS / ADJUSTING LEVELERS…………...
INSTALLATION: TEMPERATURE CONTROLLER …...………………………………………………….
INSTALLATION: FRONT GLASS ALIGNMENT & ADJUSTMENT……………………………………...

RAISING THE CURVED GLASS / OPENING REAR DOOR / REMOVING REAR DOORS ………...
DRAIN, HOSE AND BRACKET PLACEMENT ILLUSTRATIONS …………..…………..……….……..

MAINTENANCE FUNDAMENTALS - STANDARD LIGHT FIXTURES ...…………..……..…….…......

MAINTENANCE: REFRIGERATION PKG., TEMP. CONTROLLER, EVAPORATOR PAN ACCESS
CLEANING SCHEDULE - TO BE PERFORMED BY STORE PERSONNEL ………………………….

TROUBLESHOOTING - GENERAL ISSUES ………………………………………..…………...……….
TROUBLESHOOTING - CONDENSING SYSTEM ………………………………..……………..…..…..
TROUBLESHOOTING - EVAPORATOR SYSTEM ………………………………..……………..……...

PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDER) ….....

SERIAL LABEL INFORMATION & LOCATION ..……………………………………...…....…………..…

TEMPERATURE CONTROLLER - CAREL® ...…. ……………………..……..…………………...……..

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

2
3
4

5
6
7
8
9

10
11

12
13

14
15

16-18

19
20

21
22

23-25

26

2

MODELS LISTED IN THIS MANUAL (AND DETERMINING THEIR RESPECTIVE CASE DIMENSIONS)

DETERMINING YOUR MODEL AND ITS CASE DIMENSIONS:

Note 1. Your model number can be found on serial label at rear of case (near main power switch).
Note 2. Dimensions of most models can be found at www.structuralconcepts.com. Simply enter
the case model number into the Product Number Search box. Click the product specification
link for complete dimensions.
Note 3. If your specific model is not found, contact technical service (phone number is listed at
Technical Service section in this manual) for dimensions.
Note 4. CDRs (Customer Design Requests) are listed with a 4-digit number. All CDR dimensions
are identical to standard model dimensions.

THIS OPERATING MANUAL ENCOMPASSES THE FOLLOWING MODELS (AND THEIR
RESPECTIVE CDRs):

Model HMG2653R
Model HMG3953R
Model HMG5153R
Model HMG6353R
Model HMG7553R

(33” Deep Models)

Model HMG2642R.4439

(35” Deep Model)

OVERVIEW AND WARNINGS

OVERVIEW

• These Structural Concepts Harmony® service cases are designed to merchandise packaged products

at 41°F or less product temperatures.

• These cases should be installed and operated according to this operating manual’s instructions to

insure proper performance. Improper use will void warranty.

This unit is designed for the display of products in ambient store conditions where temperatures and
humidity are maintained within a specific range.

• 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.

• If unsure if your case is Type 1 or Type 2, contact Structural Concepts Technical Service (see

Technical Service section in this manual for phone number).

Caution: Do not allow air conditioning, electric fans, open doors or windows to create air currents
around display case as this may detrimentally affect proper case temperatures and operation.

ATTENTION INSTALLER

This equipment must be installed in compliance with all

applicable NEC, federal, state and local plumbing codes.

WARNING

ELECTRICAL
HAZARD

WARNING

ELECTRICAL
HAZARD

WARNING

KEEP HANDS

CLEAR

WARNING

HOT
SURFACE

WARNING

Risk of electric shock.

Disconnect power before servicing unit

WARNING

More than one source of electrical supply is employed

with units that have separate circuits.

Disconnect all 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

Evaporator Pan is Hot! Disconnect and allow to cool

before cleaning or removing from case.

CAUTION

CAUTION

Lamps have been treated to resist breakage

and must be replaced with similarly treated lamps.

4

INSTALLATION: SKID REMOVAL, ADJUSTABLE FRONT TOE-KICK / REMOVABLE FRONT GRILLE

1. Remove Case From Skid (Levelers)

• Remove shipping brace that may be

securing case to skid.

• Support case to prevent tipping.

• Caution! Levelers can be damaged if case

hits floor with heavy force!

• Carefully slide unit to

rear of skid and tip
backward off skid.

• Illustration may not

2. Remove Case From Skid (Casters)

Remove shipping brackets that may be securing
casters to skid

• Place ramp up against skid (to allow case to

smoothly slide off from skid).

• Maintain support of case at all times or center

of gravity may cause case to fall.

• Unlock Casters. Roll unit to rear of skid.

Roll down ramp
and off from skid.

reflect every feature
or option of your
particular case.

Note: Illustrations

shown reflect a

general outline of

Slide Skid Out

sample cases and do
not reflect features or

options of your

Case can be repositioned with pallet truck when
front lower panel is removed. Blocking may be
necessary to obtain adequate height.

3. Adjustable Front Toe-Kick / Removable Front Grille

• Front toe-kick is adjustable. Simply loosen screws (one at each end) and adjust accordingly.

To remove front grille, remove screws located at underside of front panel. This will allow access to

•

drain line 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.

•

• Note: Illustration below may not reflect every feature or option of your particular case.

particular model.

Ramp

Support
while
rolling
case
down
ramp.

Adjustable

Toe-Kick Slot

(at Each End)

(3) Front Grille

Retainer Screws

5

INSTALLATION: GLASS SHELVING / ELECTRICAL CONNECTIONS

4. Glass Shelving

Glass shelving will be packed separately.

• Caution! Carefully remove from packaging.

• Grasp firmly and carefully install.

• Caution! Check that plastic edging is intact

before placing glass shelving onto brackets!

• Plastic edging must NOT be removed from

glass shelves. Contact Structural Concepts for
replacement edging (see TECHNICAL
SERVICE CONTACT INFORMATION section).

• Check that glass shelving is in proper position

before placing product in case.

• See illustration at mid-right.

5. Electrical Connections

Remote Units

• Remove front or rear panel (by removing

screws and lifting off case)

• Knockouts are located on side and rear of

electrical box.

• Single phase leads are provided.

• See serial label (at case rear) for voltage rating.

• See illustration at lower-right.

Self-Contained Units

Field wiring connection / junction box location is at
rear-right of case.

• See illustration at below-left.

• Single phase leads are provided.

• Plug unit into wall outlet.

• See serial label (at case rear) for voltage rating.

Note: Wiring process must be performed by
certified electricians only.

Glass

Shelves

-------- Self-Contained Unit --------

Knockouts

-------- Remote Unit --------

6

INSTALLATION: REFRIG. LINES / STUB-UPS / DRAINS / WIRING DIAGRAMS / VENTILATION

6. Refrigeration Line Stub-Up Connections
(Remote Units)

• Remove front panel.

• Refrigerant stub-up access opening is at the

front on the left hand side of the base (see
illustration at top-right).

• Stub-up connections are accessed from inside

the case.

• Remove interior ABS decks.

• Remove fan shroud assembly.

• Line connections are in the tub front, on the left

hand side

• Remove foam material from the entry hole

provided in the tub drain trough.

• Route refrigerant lines through access hole.

• Run case-to-case connections through

cutouts in base.

• Sweat the high and low pressure

Refrigeration

Line

Stub-Ups

Access

Drain Stub-Up

(may be at case

center in extended

length cases)

connections.

• Fill access hole with suitable filler to insure

watertight integrity of tub.

• Illustration at top-right may not reflect every

feature or option of your particular case.

7. Refrigeration Drain Connection
(Remote Units)

• Depending upon drain access needs, either front

or rear panel may be removed to gain access to
drain stub-up.

• 1.5” male PVC stub-up connection is under the

case on the right hand side.

• Drain stub-up may be at case center in extended

length cases.

• Connect tub drain to floor drain. Maintain

1/4”-fall per foot to provide proper drainage.

• Illustration at top-right may not reflect every

feature or option of your particular case.

8. Evaporator Pan / Drain Position
(Self-Contained Units)

• Remove rear panel (by removing screws).

• Slide the Condenser Unit out from case.

• Condenser Unit access is now available.

• Insure that the evaporator pan is installed under

the PVC condensate drain trap.

• Insure that the evaporator pan is plugged into the

receptacle inside base.

• Lower rear panel back into place.

• See Drain, Hose and Bracket Placement

section in Operating Manual for details.

9. Electrical 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 condenser fan cover,
ballast box, raceway cover, or other related
location.

10. Ventilation and Clearance

• Self-Contained refrigerated cases must

maintain airflow clearance of 6” (minimum) to
12” (recommended) at front and rear.

• Restriction of air can void warranty.

• Illustration below may not reflect every feature

or option of your particular case.

Check air grilles for obstructions.
Maintain airflow clearance of 6” (min.)
to 12” (recommended) at front & rear.

7

INSTALLATION: ELECTRICAL CONNECTIONS / CASTERS / ADJUSTING LEVELERS

11. Display Case Start-Up

• Remote Units: Case is hard-wired. When power is

supplied, case will power-up.

• Self-Contained: Main Power switch on all units are

located at case rear, lower right.

• Self-Contained: Temperature Controller is located

at case rear, lower right.

• Turn on the lights. Whether Remote or Self-

Contained, light switch is located on inside of case

Cap

at top right, from case rear.

• All lights should come on at same time. First time

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

• The lighting is wired in series so all lights must be

plugged in or receptacles capped to turn on.

Receptacle

12. Cases With Casters: Lock and Unlock

• To lock casters, press down on lever.

• To unlock casters, pull lever up.

• See illustration at lower right.

13. Cases With Levelers: Adjust Levelers

• After case is in 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 (and possibly a pry bar) to

adjust leveler.

• Do not use pry bar on toe-kick (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.

• Use a block to reach base frames with pry bar.

• See illustrations below.

Plug

Temperature
Controller

Main
Power
Switch

Pry Bar

Block

Leveler

Adjustable

Wrench

Toe-Kick

Base

Frame

8

Rear Grille

View of Case Rear, Self-Contained Unit

Loc

ed

k

d

e

k

c

o

l

n

U

INSTALLATION: TEMPERATURE CONTROLLER

14. Temperature Controller (All Self­Contained Units and some Remote Units)

• Check that compressor symbol light is on.

SCC-Supplied temperature controller compressor

•

is identified with:

Compressor symbol (common in Carel®
temperature controllers).

• After case has run for a few minutes, check that

temperature starts to drop.

• If temperature controller does not begin cooling

(in a few minutes) see temperature controller
section in this operating manual for instructions.

• Remote units (without temperature controller on

case): Verify that refrigeration requirements listed
on serial label (found on the case) are being met.

15. Saturated Suction Temperature (Remote
Units)

• See serial label on case for suction temperature

requirements and BTU requirements.

• See serial label on case for defrost schedule and

temperature termination parameters.

Sample Carel®
Controller Face

9

INSTALLATION: FRONT GLASS ALIGNMENT & ADJUSTMENT

T

16. Front Glass Alignment & Adjustment via Levelers

• Proper alignment of the front glass is important to create and maintain a seal inside the case.

• Improper alignment can cause air leaks compromising the environment insid e the case and create condensation.

• Follow the five steps listed below to assure proper front glass alignment.

1. Side-to-Side Leveling

to the front glass). Raise or lower either side of the case by rotating

levelers to center the level bubble (following steps 3 and 4 below).

Case with Curved

Front Glass

: Place level on top of display case (parallel

2. Front-to-Back Leveling

• Place a level on top of case,
perpendicular to front glass.

• Raise or lower either side of case by
rotating levelers to center the level
bubble (follow steps 3 and 4).

• Double-check the side-to-side level.

PANEL

3. If FRONT-LEFT

FRONT

END PANEL

CORNER is too close to

end panel (or hitting it),

adjust levelers at the

BACK LEFT CORNER of

case DOWNWARD.

PANEL

END PANEL

:

GLASS

4. If FRONT-RIGHT CORNER
is too close to end panel (or
hitting it), adjust levelers at
the BACK RIGHT CORNER

LIFT

of case DOWNWARD.

FRON

GLASS

—- Front Glass —-

LIFT

5. Verification:

• After adjusting
the levelers,
open and shut
the front glass.

• Verify again that
front glass is
properly aligned
at both left-hand
and right-hand
side of case.

• If not, repeat the
above procedure
until front glass is
properly aligned
along both sides
of case.

18. Front Glass Alignment & Adjustment
via Clamshell Allen Screw Adjustment

• Make certain case is level and plumb.

• Lift glass to maximum upright position.

• Determine which side requires realignment.

• While maintaining grip on glass, loosen the Allen

screws nearest to misaligned side.

• Adjust the glass until properly positioned.

• Allen screws may now be tightened (taunt, but

not overly tightened lest glass breakage occur).

• If other side needs alignment, repeat steps while
maintaining grip on glass.

• Illustrations at right may not exactly reflect every
feature or option of your particular case.

10

Lift Handle

Allen

Screw

Clamshell

Upper

Clamshell

Lower

RAISING THE CURVED GLASS / OPENING REAR DOOR / REMOVING REAR DOORS

Raise the Curved Glass

• To raise the curved glass, secure lift handle

extrusion on the bottom edge of the door and
lift up.

• Caution: Gently return curved glass to original

position.

• See illustration below.

Opening Rear Door / Removing Rear Doors

• 26” Models have swinging clear glass door

that opens with either left hand (standard) or
right hand hinge (optional).

• All other models have removable rear doors (see

illustration below).

• Move rear doors toward the center of case.

• Individually lift each door up toward the top of

case and pivot bottom of the door out.

• Caution: Gently set doors down to avoid

marring, scraping, scratching or breakage.

View of Curved

Glass being

raised

View of Rear
Doors being
lifted up,
pivoted out
and away
from case.

Main Power
Switch (Self­Contained
Only)

11

DRAIN, HOSE AND BRACKET PLACEMENT ILLUSTRATIONS

NOTE: BELOW ILLUSTRATIONS MAY

NOT EXACTLY REFLECT EVERY

PARTICULAR CASE’S FEATURES

Three Evaporator Systems Are Illustrated Below:

Illustration #1: Hot Gas “CopeVap” Evaporator
System. “Copevap” is built into Compressor Unit.

Illustration #2: Hot Gas Evaporator System.
Illustration 3A/3B : Electrical Heat Rod Evaporator

System. Note

: Separate Evaporator Pan.

Warning! Regardless of Evaporator, the Hose and
Drain Trap MUST BE secured and positioned over
Evaporator Pan to prevent water seepage / spillage.
When sliding out Condenser Unit, be careful that
drain is not pulled from proper position.

Note: Drain

Bracket

positioned

directly over

Hose thru bracket

Reservoir

Drain Trap

“CopeVap”

Reservoir

Clamp

Clear PVC

Tube

2. Hot Gas Evaporator System.

• Hot gas serpentine coil is routed through a condensate
reservoir allowing water to be heated. This system
uses a wicking material (partially submersed) with
warm condenser air passing through it for evaporation.

• Also incorporates an overflow reservoir with heating
element to ensure complete condensate removal.

This area of your unit

may widely vary (due to

display case options).

Sight Glass

Scroll

Compressor

Receiver

Elec. Box, Hot

Gas Condensate

Overflow

Fan

Shroud

Filter
Drier

1. Hot Gas “CopeVap” Evaporator System.

Use Hose Clamp

to Secure Hose

to Adapter

Clear PVC

Tube

Evap. Pan

Positioning

Bracket

3A. Front View of

Electrical Heat Rod Evaporator System

Drain
Trap

Evaporator
Pan

Suction

Accumulator

Hot

Serpentine

Coil

Refrigeration

Assembly

Evaporator Pan

Evap. Pan Positioning Bracket

3B. Isometric View of

Electrical Heat Rod Evaporator System

Base

Wicking

Material

Compressor Pan
Shipment Screw
(1 at each side)

Drain
Trap

12

MAINTENANCE: STANDARD LIGHT FIXTURES

Note: See Installation section in this manual for:

• Front panel removal

• Front toe-kick adjustment

Light Fixtures

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: Warranty will be void if claims arise from
negligence, misuse of goods, extreme
environmental conditions or improper
maintenance. See Overview And Warnings
section in this operating manual.

Light fixtures are located on underside of shelf
assemblies and at the top inside of case.
See illustration at top-right for 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.

• See illustrations at mid and lower-right.

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.

• See illustrations at right.

Drain and Expansion Valve Access

• The drain and expansion valve are both accessi-

ble from the front of the case.

• Unplug the fans (one plug per side) and remove

the fastener from the access panel in the front
right (or left) corner of the unit.

• The drain and the expansion valve (TXV) are

directly below the access panel.

Light

Fixtures

Bracket

Retainers

Light Socket

Lamp Pins

Light Fixture

13

Fan Plug

TXV Access

Panel

Evaporator

Fan

MAINTENANCE: REFRIGERATION PKG., TEMP. CONTROLLER, EVAPORATOR PAN ACCE SS

Refrigeration Package Access

Note: Servicing to be accomplished by licensed
electrical / refrigeration contractor.

Air Filter

• Magnetic strips attached to the filter adhere the

filter to the rear grille.

• Clean the nylon mesh filter by rinsing thoroughly

with water against the air flow direction.

• Mild detergent removes smoke & grease stains.

• See illustration at top-right.

Pull Out Refrigeration Package

• Remove the rear grille. Grille may be slid upward

and out or

removal of two screws may be required.

• Note: At initial slide-out, it may be necessary to

remove Compressor Pan Shipment Screws (see
illustration at right for location).

• Refrigerant lines are flexible to facilitate rear access

maintenance.

• Plastic glides are mounted at base to assist in sliding

the condenser out for access.

• Service connections are at the left of compressor.

• Slide condenser unit out 12 to 18 inches to access

high pressure service connection.

Temperature Controller (Self-Contained Units Only)

• Temperature Controller is located in the Ballast Box.

• Temperature / Defrost control settings are

programmable from these locations.

• Case Temperature Set Point is set at the factory, as

determined by case size & sensor probe location.

• Temperature is controlled by thermostat.

• If a temperature setting change is required, follow

instructions regarding Temperature Control
Programming Steps in the technical information
section of this operating manual.

• If service is required to the temperature control unit,

call Structural Concepts Corporation. Maintenance
should be performed by a certified technician.

• The toll-free number is listed in the Technical

Service section of this manual.

• See Temperature Controller section in this

manual.

NOTE: Spirit-filled thermometers located in the
refrigerated compartment are for monitoring warm­est air temperature in accordance with NSF Std. 7

Evaporator Pan Access / Removal

• Turn off main power; allow evaporator pan to

cool.

• Lift Rear Grille up and off (no tools required).

• WARNING! Evaporator Pan May Be Hot!

Check temperature of pan prior to handling.

• Withdraw evaporator pan from the right side

behind electrical box.

• Unplug evaporator pan from the electric outlet.

• Empty evaporator pan contents into suitable

container. Replace rear panel when completed.

The Illustration below may not depict an exact

representation of your particular unit.

Rear Grille

14

Compressor Pan
Shipment Screw
(one at each side)

CLEANING SCHEDULE - TO BE PERFORMED BY STORE PERSONNEL

AREA FREQ. INSTRUCTIONS

Exterior Daily

Daily

Daily

Weekly

Weekly

Weekly

All Glass / Mirrors: Clean side glass, front glass, glass shelves, and mirrors with

household or commercial glass cleaner. Clean out door track with moist cloth.

Rear Sliding Door Exterior Glass: Clean with household or commercial glass
cleaner.

End Panels, Front Panel, Toe-Kick, etc.: Wipe off all surfaces with warm water
and mild soap solution and non-abrasive cloth.

Wood, Laminate and Painted Surfaces: Clean with mild soap and water
solution and a soft cloth .

Acrylic: Clean with warm water, mild soap solution and soft cloth; acrylic
cleaning solutions are also available. Caution! Never use ammonia-based
cleaners on acrylic. Incorrect cleaning agents or abrasive cleaning cloths cause
surface to ‘cloud’ over time.

Air Filter (with Magnetic Strips) on Rear Grille: Remove air filter. Rinse with
hot water against air flow direction. Use mild detergent to remove smoke and
grease stains.

Monthly

Monthly

Interior Weekly

Monthly

Monthly

Condensing Coil: Remove rear grille. Vacuum or brush grille area on back of

case; clean dust and dirt collecting on condenser coil. Avoid damaging fins.

Under Case Cleaning

: Remove front toe-kick (or rear grille). Vacuum under

case to remove all dust and dirt. Replace front toe-kick (or rear grille) when
complete.

Decks: Wipe off decks with moist cloth dipped in mild soap and water solution.
Tub and Drain: Keep clean and free of debris which could clog tub and drain.

To access drain area, remove the deck and fan shroud.

• Vacuum tub under deck.

• Direct the drain to a floor drain or a bucket.

• Run hose into drain to flush out debris. Carefully hose out the tub.

• Caution! Avoid splattering water over the case and surrounding areas!

Air Return Grille and Fan Shroud Area

: 1) Turn off power. 2) Remove decks

from case. 3) Clean with moist cloth.

15

TROUBLESHOOTING - GENERAL ISSUES (PAGE 1 of 3)

CONDITION TROUBLESHOOTING

Case Not Lining Up

Water Is On The Floor

See Installation Section for instructions on properly aligning case
(alongside other cases) and adjusting levelers.

Caution! Water on flooring can cause much damage! Until cause is
determined (and repaired), following these procedures:

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

• Use ‘catch pans’ for water to drain into. Swap out regularly until

case has completely drained.
Note: See Drain, Hose and Bracket Placement Illustrations sheet in this
manual for views of different evaporator systems used in display cases.

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

floor drain, for remote units).
Check store conditions. To prevent condensation in NSF® Type 1

environments, maximum conditions are to be 55% humidity / 75°
Fahrenheit. For NSF® Type 2, maximum conditions are to be 60%
humidity / 80° Fahrenheit. See serial label (at case rear near main
power switch) for NSF® Type of your case.

Check evaporator pan float for proper operation (Heat Rod Evaporator
System only).

Check that evaporator pan is plugged in.
Caution! Evaporator pan may be malfunctioning (Electrical Heat Rod

Evaporator system). If so, water will overflow pan and seep onto
flooring causing damage! Until evaporator pan is functioning (or is
replaced), following these procedures:

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

• Use ‘catch pans’ for water to drain into. Swap out regularly until

case has completely drained.
Caution! Disruption of power can cause water to overflow pan and

seep onto flooring causing damage! Check that power to case is
constant. Until power is restored, following these procedures:

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

• Use ‘catch pans’ for water to drainage. Swap out regularly until

evaporation of case is complete (or until power is restored).
When power to case is restored, evaporator pan should function
properly and water will no longer overflow onto flooring.

Wicking material may be dirty or worn and need replacement (Hot Gas
Evaporator system).

• Slide refrigeration system out from under unit.

• After refrigeration system has been carefully slid out from under unit,

replace wicking material with new. If wicking material is not avail-

able, contact Structural Concepts®. See toll-free number at last

page of this operating manual.

16

TROUBLESHOOTING - GENERAL ISSUES (PAGE 2 of 3)

CONDITION TROUBLESHOOTING

Fan Emits Excessive Noise

Fans Are Not Working

Check that the case is aligned, level and plumb.
Check evaporator fan for cleanliness.
Unplug fan motors; check motor shaft for excessive 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 (if present) is on.
Check that fans are plugged in to 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.

System Is Not Operating

Check that fan wiring is connected on terminal blocks.

Check that the utility power is on.
Check the circuit breaker box for tripped circuits.
Case Is Not Holding Temperature

If a large amount of warm product was added to the case, it will

take time for the temperature to adjust. Product should be

pre-chilled before placing in display case.

Check Temperature Controller section in this manual.
Check that the case is not in the sun or near a heat or air

conditioning vent.

If case is located near outside doors, temperature fluctuation

can hinder unit’s ability to maintain temperature.

Check air grilles for obstructions. Maintain airflow clearance of

6” (minimum) to 12” (recommended) at case front and rear.

Check sight glass for flashing and/or low charge.

Check Set Point Temperature; it may be adjusted too high.

17

TROUBLESHOOTING - GENERAL ISSUES (PAGE 3 of 3)

CONDITION TROUBLESHOOTING

Case Lights Are Not Working

Check that Light switch is in the ON position (self-contained
cases only). Remote case lights come on at start-up.

Check for burned out bulbs. Turn lights off & replace.

Clean dirt and dust from the bulbs to prevent flickering.

Check to insure voltage at ballasts. If voltage is entering but

not exiting the ballast, ballast is faulty.

Check that ALL lights are plugged in and receptacles capped.

Control Display Is Flashing

Condensing Unit Is Not Operating
(Self-Contained Units Only)

See MAINTENANCE FUNDAMENTALS - LED LIGHT FIX­TURES section in this manual for illustrations.

Check Temperature Controller section in this manual.

Check Temperature Controller section in this manual.

Check that the power is turned on.

Review Temperature Controller’s Settings for accuracy.

18

TROUBLESHOOTING - CONDENSING SYSTEM (QUALIFIED SERVICE TECHNICIANS ONLY)

CONDITION TROUBLESHOOTING

Head Pressure Too High

Check that the Condensing Coil is not dirty or covered.

Check that Condensing Fans are working.

Check that the refrigeration system is not overcharged.

Check that case is free of non-condensables.

Check that the Liquid Line Drier Filter is not plugged.

Check Set Point temperature; it may be adjusted too high.

Head Pressure Too Low

Check System Operating temperatures.

Check that Store Ambient temperature isn’t above maximum

allowed. See Overview and Warnings Section.

Check that Refrigerant Charge isn’t too low.

Check that Suction Pressure isn’t too low.

Check to verify that Compressor Valves aren’t faulty.

19

TROUBLESHOOTING - EVAPORATOR SYSTEM (QUALIFIED SERVICE TECHNIC I ANS ONLY)

CONDITION TROUBLESHOOTING

Low Suction Pressure

High Suction Pressure

Check for low refrigerant.

Check that Expansion Valve isn’t restricted.

Check that Liquid Line or Filter isn’t restricted.

Check that Evaporator Motors are working.

Check for Superheat setting.

Check that the Thermostatic Element charge isn’t depleted.

Check that the Coil is not iced up.

Check that Refrigerant Charge isn’t too high.

Check that Compressor Valves aren’t faulty.

Check that there is no air seepage around Condensing Coil.

Check that the Cooling Load isn’t high.

Check that Superheat adjustment isn’t low.

Check TXV Bulb Installation
a. Poor thermal contact.
b. Warm location.

Check Compressor: Low capacity means it is undersized for its
application.

20

PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDER)

WARNING! TURN OFF CASE BEFORE PERFORMING PREVENTIVE MAINTENANCE!

PREVENTIVE

FREQUENCY INSTRUCTIONS

MAINTENANCE

Case Exterior Monthly Condensing Coil:

• 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).

Quarterly Evaporator Pan: Caution! Disconnect from receptacle box.

• Remove mounting screws from base.

• Use de-scaling solution (such as CLR® that will prevent

corrosion, lime and rust) to clean pan.

• Rinse thoroughly; do not submerse in water.

• Reattach pan to case with same mounting screws.

• Reconnect power cord to receptacle box.

Quarterly Compressor Area: Caution! Be certain to disconnect power

from case before cleaning Compressor Area!

• Slide/Roll compressor package out from under case.

• Use moist cloth to wipe off dust & debris that collects on

various parts.

• Slide/Roll compressor package back under case.

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 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 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.

• Clean Fan Blades, Motors and Brackets by wiping down

with moist cloth.

21

SERIAL LABEL LOCATION & INFORMATION LISTED / TECH INFO & SERVICE

Serial Label Location & Information Listed / Technical Information & Service

Serial Label Location & Information Listed / Technical Information & Service

• Serial labels are located near the electrical access on your case.

• Serial labels are located near the electrical access on your case.

• Serial labels contain electrical, temperature & refrigeration information, as well as regulatory

• Serial labels contain electrical, temperature & refrigeration information, as well as regulatory

standards to which the case conforms.

standards to which the case conforms.

• For additional technical information and service, see the TECHNICAL SERVICE page in this

• For additional technical information and service, see the TECHNICAL SERVICE page in this

manual for instructions on contacting Structural Concepts’ Technical Service Department.

manual for instructions on contacting Structural Concepts’ Technical Service Department.

• See images below for samples of both refrigerated and non-refrigerated serial labels.

• See images below for samples of both refrigerated and non-refrigerated serial labels.

S

S

S

A

A

M

M

P

P

L

L

A

M

E

E

P

ON

ON

L

E

L

L

Y

Y

O

N

L

Y

Y

Y

L

O

O

L

NL

O

NL

NL

Y

Y

Y

SA

MP

L

E

S

S

O

A

A

N

MP

MP

L

Y

LE

LE

SA

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

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

M

M

SA

SA

ON

ON

PLE

M

PLE

PLE

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

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

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

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

22

22

Read And Save These Instructions - Page 1 of 3

Integrated Electronic

Microprocessor Controller

Programming The Instrument

How To Modify The Setpoint

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

Set

Prg

mute

Set

▲

aux

def

▼

How To Modify The Defrost, Differential
Or Other Parameters

Prg

mute

Set

▲

aux

Set

▲

aux

Set

Prg

mute

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

Set

for at least 5 seconds; the display will show the
number “0”, representing the password prompt.

2. Confirm by pressing “SET” key.

3. Press ▲ or ▼ to reach the

def

category to be modified.

▼

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

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

7. Press & hold the “Prg” key for at least 5 seconds
to save changes. This action will also mute the
audible alarm (buzzer) & deactivate the alarm relay.

5. Increase or decrease the value using

def

the ▲ or ▼ button respectively.

▼

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 Activate Manual Defrost

def

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

▼

How To Activate / Deactivate Auxiliary Output

▲

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

aux

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

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

Set

together for at least 5 seconds; display will

2. Confirm by pressing “SET” key.

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

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.

convert to new scale. No conversion is required.

show “0”, representing password prompt.

def

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

▼

5. Press ▲ or ▼ to change value to desired

def

setting: “0” for Celcius (°C) or “1” for

▼

Fahrenheit (°F).

Note! All values will automatically

How To Reset Any Alarms With Manual Reset

Prg

mute

▲

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

aux

Structural Concepts Corp., 888 E. Porter Rd · Muskegon, MI 49441
Ph: 231.798.8888 / Fax: [phone] / www.structuralconcepts.com

23

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

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

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

Structural Concepts Corp., 888 E. Porter Rd · Muskegon, MI 49441
Ph: 231.798.8888 / Fax: [phone] / www.structuralconcepts.com

24

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

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

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 Celcius (°C) or Fahrenheit (°F)

flag C 0 1

/c1 Calibration of probe 1 °C/°F C -20 20

/c2 Calibration of probe 2 °C/°F C -20 20

St Temperature set point °C/°F F r2 r1

rd Control delta °C/°F F 20 0.1

dl Interval between defrosts hours F 0 250

dt1 End defrost temperature, evaporator °C/°F F -50 200

dP1 Maximum defrost duration, evaporator min F 1 250

d6 Display on hold during defrost - C 0 2

For Case

Specific

Defaults

See Serial

Label

Located

Near

Electrical

Access

On Your

Case.

For
Additional
Technical

Information

Call

Structural

Concepts

Technical

Service

Dept. at

1(800)

433.9489

dd Dripping time after defrost min F 0 15

d/1 Display of defrost probe 1 °C/°F F - -

* Unit Of Measure

Structural Concepts Corp., 888 E. Porter Rd · Muskegon, MI 49441
Ph: 231.798.8888 / Fax: [phone] / www.structuralconcepts.com

25

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

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

TECHNICAL SERVICE CONTACT INFORMATION & WARRANTY I NFORMATION

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

WARRANTY INFORMATION

(Note: Standard Limited Warranty can be found at www.StructuralConc e pts.com)

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. Limited warranty may apply to equipment sold elsewhere.
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.

26