Structural Concepts Harmony HMG2642R.4439, Harmony HMG7553R, Harmony HMG2653R, Harmony HMG3953R, Harmony HMG5153R Installation & Operating 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

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