Merco HMC Series Operation Manual

Installation and Operation Manual

Heated Merchandising Cabinets

HMC Series

I&W #07.05.239.00

Do not operate this equipment unless you have
read and understood the contents of this manual!
Failure to follow the instructions contained in this
manual may result in serious injury or death. This
manual contains important safety information
concerning the maintenance, use, and operation
of this product. If you’re unable to understand the
contents of this manual, please bring it to the
attention of your supervisor. Keep this manual in
a safe location for future reference.

No opere este equipo al menos que haya leído y
comprendido el contenido de este manual!
Cualquier falla en el seguimiento de las
instrucciones contenidas en este manual puede
resultar en un serio lesión o muerte. Este manual
contiene importante información sobre seguridad
concerniente al mantenimiento, uso y operación
de este producto. Si usted no puede entender el
contenido de este manual por favor pregunte a su
supervisor. Almacenar este manual en una
localización segura para la referencia futura.

© 2010 Merco, LLC

CONTENTS

NOTICE

CAUTION

WARNING

Important Owner Information ...............................................i

Introduction............................................................................i

Important Safety Information...............................................1

Model Description.................................................................2

Model Designation ................................................................2

Specifications........................................................................3

Plug Configurations .........................................................3

Electrical Rating Chart .....................................................3

Dimensions......................................................................4

Installation.............................................................................5

General............................................................................5

Reversing the Access Door .............................................6

Relocating the Proximity Switch ......................................7

Operation...............................................................................8

General............................................................................8

Setting the Air Temperature.............................................8

Setting the Humidity Level ...............................................9

Food Holding Guide.........................................................9

IMPORTANT OWNER INFORMATION

Record the model number, serial number (specification label
located on the ceiling sheet inside the unit), voltage, and
purchase date of the unit in the spaces below. Please have this
information available when calling Merco for service assistance.

Model No. ____________________________________

Serial No. ____________________________________

Voltage ______________________________________

Date of Purchase ______________________________

Maintenance ........................................................................10

General..........................................................................10

Cleaning ........................................................................10

Removing the Glass Panels ..........................................10

Removing the Rotating Rack .........................................10

Draining the Water Reservoir.........................................11

Removing Lime and Mineral Deposits ...........................11

Replacing a Display Light ..............................................11

Troubleshooting Guide ......................................................12

Options and Accessories ...................................................13

Merco Limited Warranty .....................................Back Cover

Business 8:00
Hours: Central Standard Time (C.S.T.)

Telephone: [phone] (Technical Support)

Additional information can be found by visiting our web site at
www.mercoproducts.com.

AM to 5:00 PM

888.417.5462 (Customer Service)

Merco, LLC
1111 North Hadley Road
Fort Wayne, Indiana 46804
United States of America

INTRODUCTION

Merco Heated Merchandising Cabinets are designed to hold
prepared foods for prolonged periods of time while maintaining
that “just-made” quality. Heated Merchandising Cabinets
provide the best environment for food products by regulating
the air temperature while at the same time balancing the
humidity level. The use of controlled, moisturized heat
maintains serving temperature and food texture longer than
conventional dry holding equipment.

The Heated Merchandising Cabinet’s air flow pattern is
designed to maintain consistent cabinet temperature without
drying out foods. The precise combination of heat and humidity
creates a “blanket” effect around the food. The air flow rate
enables the cabinet to recover temperature rapidly after
opening and closing the door.

Merco Heated Merchandising Cabinets are products of
extensive research and field testing. The materials used were
selected for maximum durability, attractive appearance and
optimum performance. Every unit is inspected and tested
thoroughly prior to shipment.

This manual provides installation, safety, and operating
instructions for Heated Merchandising Cabinets. Merco
recommends all installation, operating, and safety instructions
appearing in this manual be read prior to installation or
operation of the unit.

Safety information that appears in this manual is identifie
the following signal word panels:

WARNING indicates a hazardous situation which, if not
avoided, could result in death or serious injury.

CAUTION indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.

NOTICE is used to address practices not related to personal
injury.

d by

i

Form No. HMCM-0210

IMPORTANT SAFETY INFORMATION

WARNING

NOTICE

CAUTION

WARNING

Read the following important safety information before using this equipment to avoid serious injury or death

and to avoid damage to equipment or property.

ELECTRIC SHOCK HAZARD:

• Plug unit into a properly grounded electrical receptacle
of the correct voltage, size, and plug configuration. If
plug and receptacle do not match, contact a qualified
electrician to determine and install the proper voltage
and size electrical receptacle.

• Turn power switch OFF, unplug power cord, and allow
unit to cool before performing any maintenance or
cleaning.

• DO NOT submerge or saturate with water. Unit is not
waterproof. Do not operate if unit has been submerged
or saturated with water.

• Unit is not weatherproof. Locate unit indoors where
ambient air temperature is a minimum of 70°F (21°C).

• Do not steam clean or use excessive water on unit.

• Do not overfill water reservoir. Overfilling can cause
electrical shock. Water reservoir is full when “LO H2O”
stops flashing on CABINET TEMPERATURE display.
Stop filling when “LO H2O” stops flashing on display.

• Turn power switch OFF and allow unit to cool before
draining water reservoir.

• Do not pull unit by power cord.

• Discontinue use if power cord is frayed or worn.

• Do not attempt to repair or replace a damaged power
cord. The cord must be replaced by Merco, a Factory
Authorized Service Agent, or a person with similar
qualifications.

• This unit must be serviced by qualified personnel only.
Service by unqualified personnel may lead to electric
shock or burn.

• Use only Original Equipment Manufacturer (OEM)
Replacement Parts when service is required. Failure to
use OEM Replacement Parts will void all warranties and
may subject operators of the equipment to hazardous
electrical voltage, resulting in electrical shock or burn.
OEM Replacement Parts are specified to operate safely
in the environments in which they are used. Some
aftermarket or generic replacement parts do not have
the characteristics that will allow them to operate safely
in Merco equipment.

FIRE HAZARD: Locate unit a minimum of 1″ (25 mm) from
combustible walls and materials. If safe distances are not
maintained, discoloration or combustion could occur.

The fluorescent light fixtures in this unit have plastic safety
shields covering the fluorescent tubes to meet National
Sanitation Foundation (NSF) standards. To avoid personal
injury and/or food contamination, always operate the unit
with the plastic safety shields properly installed.

This unit is not intended for use by children or persons
with reduced physical, sensory, or mental capabilities.
Ensure proper supervision of children and keep them away
from the unit.

Make sure all operators have been instructed on the safe
and proper use of the unit.

Make sure food product has been heated to the proper
food-safe temperature before placing in unit. Failure to heat
food product properly may result in serious health risks.
This unit is for holding pre-heated food product only.

Merco is not responsible for the actual food product
serving temperature. It is the responsibility of the user to
ensure that the food product is held and served at a safe
temperature.

This unit has no “user-serviceable” parts. If service is
required on this unit, contact a Factory Authorized Service
Agent or contact the Merco Service Department at
800-506-9565.

BURN HAZARD: Some exterior surfaces on the unit will get
hot. Use caution when touching these areas.

Locate unit at the proper counter height in an area that is
convenient for use. The location should be level to prevent
the unit or its contents from falling accidentally and strong
enough to support the weight of the unit and contents.

The National Sanitation Foundation (NSF) requires that
units over 36″ (914 mm) in width or weighing more than 80
lbs. (36 kg) either be sealed to or raised above the
installation surface. If unit cannot be sealed at the point of
use, 4″ (102 mm) legs are included to allow for proper
cleaning access below unit.

Transport unit in upright position only. Before moving or
tipping unit, secure all glass surfaces with tape and drain
water from water reservoir. Failure to do so may result in
damage to unit or personal injury.

Use of distilled water in the water reservoir of humidified
units is recommended to preserve the life of electrical and
mechanical components. If non-distilled water is used, the
reservoir will require periodic cleaning and deliming (refer
to the MAINTENANCE section for cleaning procedure). Unit
failure due to lime or mineral deposits is not covered under
warranty.

Do not use deionized water. Deionized water will shorten
the life of the water pan and heating element.

Use non-abrasive cleaners only. Abrasive cleaners could
scratch the finish of the unit, marring its appearance and
making it susceptible to soil accumulation.

Clean unit daily to avoid malfunctions and maintain
sanitary operation.

Form No. HMCM-0210

1

MODEL DESCRIPTION

H M C - 1 X

Heated Merchandising Cabinet

1 = One Door
2 = Two Doors

No Motorized
Rack Rotation

All Models

All Heated Merchandising Cabinets have an air heating system,
humidity system with low water control protection, fluorescent
lamps, tempered glass sides, and a door. The standard access
door can be hinged left or right. The pretzel tree display rack is
stainless steel and the other display racks are nickel-plated. All
units are available in several Designer colors.

Model HMC-1

Model HMC-1 is a single door model with a motorized rotating
display. It comes standard with a pizza rack that holds up to
four (4) round pizza pans with a maximum diameter of 15″ (381
mm). The rotating rack stops automatically when the door is
opened. Additional rack options are available. Refer to the
OPTIONS AND ACCESSORIES section for details.

Model HMC-1X

The HMC-1X is similar to the HMC-1, but features a stationary
4-slot pan rack instead of the rotating display. The rack can hold
pans with a maximum width of 13″ (330 mm) and a depth of 18″
(457 mm). Additional rack options are available. Refer to the
OPTIONS AND ACCESSORIES section for details.

Figure 1. HMC-1

NOTE: Model HMC-1 cannot be converted to a model

HMC-2 or HMC-2X.

Model HMC-2

The HMC-2 is the same as model HMC-1, but has an additional
door on the opposite side of the controls for pass-through
convenience.

MODEL DESIGNATION

Figure 2. HMC-1X

NOTE: Model HMC-1X cannot be converted to a model HMC-

1, HMC-2, or HMC-2X.

Model HMC-2X

The HMC-2X is the same as model HMC-1X, but has an
additional door on the opposite side of the controls for pass­through convenience.

NOTE: Model HMC-2X cannot be converted to a model

HMC-2.

Figure 3. Model Designation

2

Form No. HMCM-0210

SPECIFICATIONS

WARNING

NEMA 5-15P

CEE 7/7 Schuko AS-3112

BS-1363

Plug Configurations

Units are supplied from the factory with an electrical cord and
plug installed. Plugs are supplied according to the applications.

ELECTRIC SHOCK HAZARD: Plug unit into a properly
grounded electrical receptacle of the correct voltage, size,
and plug configuration. If plug and receptacle do not
match, contact a qualified electrician to determine and
install the proper voltage and size electrical receptacle.

NOTE: The specification label is located on the ceiling sheet

Electrical Rating Chart

inside the unit. See label for serial number and
verification of unit electrical information.

NOTE: Receptacle not supplied by Merco.

Model Voltage Hertz Watts Amps Plug Configurations Shipping Weight

HMC-1, -1X 120 60 1440 12.0 NEMA 5-15P 120 lbs. (54 kg)

(with humidity) 220 50/60 1440 6.5 CEE 7/7 Schuko, BS-1363, AS 3112 120 lbs. (54 kg)

240 50/60 1440 6.0 CEE 7/7 Schuko, BS-1363, AS 3112 120 lbs. (54 kg)
220–230 (CE) 50/60 1440–1574 6.5–6.8 CEE 7/7 Schuko, BS-1363, AS 3112 120 lbs. (54 kg)
230–240 (CE) 50/60 1323–1440 5.8–6.0 CEE 7/7 Schuko, BS-1363, AS 3112 120 lbs. (54 kg)

Figure 4. Plug Configurations

HMC-1, -1X 120 60 1115 9.3 NEMA 5-15P 120 lbs. (54 kg)

(no humidity) 220 50/60 1115 5.1 CEE 7/7 Schuko, BS-1363, AS 3112 120 lbs. (54 kg)

240 50/60 1115 4.6 CEE 7/7 Schuko, BS-1363, AS 3112 120 lbs. (54 kg)
220–230 (CE) 50/60 1115–1219 5.1–5.3 CEE 7/7 Schuko, BS-1363, AS 3112 120 lbs. (54 kg)
230–240 (CE) 50/60 1025–1115 4.5–4.6 CEE 7/7 Schuko, BS-1363, AS 3112 120 lbs. (54 kg)

HMC-2, -2X 120 60 1440 12.0 NEMA 5-15P 122 lbs. (55 kg)

(with humidity) 220 50/60 1440 6.5 CEE 7/7 Schuko, BS-1363, AS 3112 122 lbs. (55 kg)

240 50/60 1440 6.0 CEE 7/7 Schuko, BS-1363, AS 3112 122 lbs. (55 kg)
220–230 (CE) 50/60 1440–1574 6.5–6.8 CEE 7/7 Schuko, BS-1363, AS 3112 122 lbs. (55 kg)
230–240 (CE) 50/60 1323–1440 5.8–6.0 CEE 7/7 Schuko, BS-1363, AS 3112 122 lbs. (55 kg)

HMC-2, -2X 120 60 1115 9.3 NEMA 5-15P 122 lbs. (55 kg)

(no humidity) 220 50/60 1115 5.1 CEE 7/7 Schuko, BS-1363, AS 3112 122 lbs. (55 kg)

240 50/60 1115 4.6 CEE 7/7 Schuko, BS-1363, AS 3112 122 lbs. (55 kg)
220–230 (CE) 50/60 1115–1219 5.1–5.3 CEE 7/7 Schuko, BS-1363, AS 3112 122 lbs. (55 kg)
230–240 (CE) 50/60 1025–1115 4.5–4.6 CEE 7/7 Schuko, BS-1363, AS 3112 122 lbs. (55 kg)

The shaded areas contain electrical information for International models only.

Form No. HMCM-0210

3