Hussmann MicroSC MNGSC8-A Bedienungsanleitung

MNGSC8-A

Medium Temperature Self Contained

Island Merchandisers

Installation &

Operation Manual

P/N 3113125_A

January 2019

Spanish 3113126

MANUAL- I/O SELF-CONTAINED MNGSC8A

WARNINGS:

If the information in these instructions are not followed

exactly, a ﬁre or explosion may result, causing property

damage, personal injury or death.

Installation and service must be performed by a qualiﬁed

installer or service agency.

READ THE ENTIRE MANUAL BEFORE

INSTALLING OR USING THIS EQUIPMENT.

The unit uses R-290 gas as the refrigerant. R-290 is

ﬂammable and heavier than air. It collects ﬁrst in low

areas but can be circulated by the fans. If propane gas is

present or even suspected, do not allow untrained

personnel to attempt to ﬁnd the cause. The propane gas

used in the unit has no odor. Thelack of smell does not

indicate a lack of escaped gas. If a leak is detected,

immediately evacuate all persons from the store, and

contact the local ﬁre department to advise them that a

propane leak has occurred. Do not let any persons back

into the store until the qualiﬁed service technician has

arrived and that technician advises that it is safe to

return to the store. No open ﬂames, cigarettes or other

possible sources of ignition should be used inside or in

the vicinity of the units.

FAILURETO ABIDEBY THIS WARNING COULD

RESULT IN AN EXPLOSION, DEATH, INJURYAND

PROPERTY DAMAGE.

IMPORTANT

Keep in store for future reference!

P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com

BEFORE YOU BEGIN

Read these instructions completely and carefully.

PERSONAL PROTECTION EQUIPMENT (PPE)

Personal Protection Equipment (PPE) is required whenever installing or servicing this

equipment. Always wear safety glasses, gloves, protective boots or shoes, long pants, and

a long-sleeve shirt as required when installing or servicing this equipment.

1. If the information in these instructions are not followed exactly, a ﬁre or explosion may result, causing property damage, person-

al injury or death.

2. Installation and service must be performed by a qualiﬁed installer or service agency.

3. This unit is designed only for use with R-290 (propane) gas as the designated refrigerant.

THE REFRIGERANT LOOP IS SEALED. ONLY A QUALIFIED TECHNICIAN SHOULD ATTEMPT TO SERVICE!

• Propane is ﬂammable and heavier than air.

• It collects ﬁrst in the low areas but can be circulated by the fans.

• If R-290 (propane) is present or even suspected, do not allow untrained personnel to attempt to ﬁnd the cause.

• The propane gas used in the unit has no odor.

• The lack of smell does not indicate a lack of escaped gas.

• If a leak is detected, immediately evacuate all persons from the store, and contact the local ﬁre department to advise them that a

pro pane leak has occurred.

• Do not let any persons back into the store until the qualiﬁed service technician has arrived and that technician advises that it is

safe to return to the store.

• A hand-held propane leak detector (“sniffer”) shall be used before any repair and/or maintenance.

• No open ﬂames, cigarettes or other possible sources of ignition should be used inside the building where the units are located

until the qualiﬁed service technician and/or local ﬁre department determines that all propane has been cleared from the area and

from the refrigeration systems.

• Component parts are designed for propane and non-incendive and non-sparking. Component parts shall only be replaced with

identical repair parts.

FAILURE TOABIDE BY THIS WARNING COULD RESULT IN AN EXPLOSION, DEATH, INJURY AND PROPERTY DAMAGE.

P/N 3113125_A iii

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. MNGSC8-A Self Contained Merchandisers

ANSI Z535.5 DEFINITIONS .......... vi

INSTALLATION

UL Listing ......................... 1-1

Federal / State Regulation ............ 1-1

Hussmann Product Control ........... 1-1

Shipping Damage ................... 1-1

Location ........................... 1-1

Self Contained Location .............. 1-2

Model Description .................. 1-3

Unloading ......................... 1-3

Exterior Loading .................... 1-3

Shipping Skid ...................... 1-3

Merchandiser Leveling ............... 1-3

Serial Plate Location ................. 1-4

Refrigeration Unit Access ............. 1-4

Sealing Merchandiser to Floor ......... 1-4

Self-Contained Refrigeration Equipment

Start Up Check List ................ 1-5

ELECTRICAL / REFRIGERATION

Merchandiser Electrical Data .......... 2-1

Field Wiring ........................ 2-1

Electrical Connections . . . . . . . . . . . . . . . . 2-1

Electrical Outlet ..................... 2-1

Refrigeration (Self Contained Models) .. 2-1

Refrigeration System Layout........... 2-2

Waste Outlet and Water Seal .......... 2-2

Before Beginning any Service or Repair . . 2-3

Replacing Refrigeration Components ... 2-4

Steps to Recover Refrigerant .......... 2-4

Charging .......................... 2-5

Waste Outlet and Water Seal .......... 2-6

Installing Drip Piping ................ 2-7

Drip Piping Lineup Arrangements ...... 2-8

START UP / OPERATION

Controller Operation ................. 3-1

Connections ........................ 3-2

LED .............................. 3-3

KDEPLUS Buttons .................. 3-4

Setpoint: Setting and Edit Lock ........ 3-5

Display Probes Value ................. 3-5

Key-Activated Functions .............. 3-5

Typical Sensor Location .............. 3-6

Controls and Adjustments ............ 3-7

Load Limits ........................ 3-8

Stocking ........................... 3-8

Thermometer ....................... 3-8

MAINTENANCE

Care and Cleaning ................... 4-1

Removing Scratches from Bumper ...... 4-2

Cleaning Under Fan Plenum .......... 4-2

Cleaning Discharge Air Honeycomb .... 4-2

Cleaning Stainless Steel Surfaces ....... 4-3

Cleaning Condenser Air Filter ......... 4-3

Cleaning Coils ...................... 4-3

Cleaning Evaporation Pan ............ 4-4

Self-Contained Refrigeration Equipment

Maintenance Check List ............. 4-5

SERVICE

Replacing Fan Motors and Blades ...... 5-1

Troubleshooting Guide ............... 5-2

WARRANTY

TABLE OF CONTENTS

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com

REVISION HISTORY

ORIGINAL ISSUE — JANUARY 2020

* * * * * * * * * * * * * * * * * * * * * * * * * *

ANSI Z535.5 DEFINITIONS

• DANGER – Indicate[s] a hazardous

situation which, if not avoided, will

result in death or serious injury.

• WARNING –Indicate[s] a hazardous

situation which, if not avoided, could

result in death or serious injury.

• CAUTION –Indicate[s] a hazardous

situation which, if not avoided, could

result in minor or moderate injury.

• NOTICE – Not related to personal injury –

Indicates[s] situations, which if not avoided,

could result in damage to equipment.

Merchandiser must operate for 24 hours

before loading product!

Regularly check merchandiser temperatures.

Do not break the cold chain. Keep products

in freezer before loading into merchandiser.

These merchandisers are designed

for only pre-frozen products.

AT TENTION

Merchandiser must operate for 24 hours

before loading product!

Regularly check merchandiser temperatures.

Do not break the cold chain. Keep products in

cooler before loading into merchandiser.

These merchandisers are designed

for only pre-chilled products.

IMPORTANT

KEEP IN STORE FOR FUTURE REFERENCE

Quality that sets industry standards!

12999 St. Charles Rock Road • Bridgeton, MO 63044-2483

U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900

www.hussmann.com

P/N 3113125_A 1-1

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. MNGSC8-A Self Contained Merchandisers

UL LISTING

These merchandisers are manufactured to

meet ANSI/ UL 471 standard requirements

for safety. Proper installation is required to

maintain the listing.

FEDERAL / STATE REGULATION

These merchandisers at the time they are

manufactured, meet all federal and state/

provincial regulations. Proper installation

is required to ensure these standards are

maintained. Near the serial plate, each

merchandiser carries a label identifying the

environment for which the merchandiser was

designed for use.

ANSI/NSF-7 Type I – Display Refrigerator / Freezer

Intended for 75°F (24°C) / 55% RH Ambient Application

ANSI/NSF-7 – Display Refrigerator

Intended for Bulk Produce

HUSSMANN PRODUCT CONTROL

The serial number and shipping date of all

equipment is recorded in Hussmann’s files

for warranty and replacement part purposes.

All correspondence pertaining to warranty or

parts ordering must include the serial number

of each piece of equipment involved. This is

to ensure the customer is provided with the

correct parts.

SHIPPING DAMAGE

All equipment should be thoroughly examined

for shipping damage before and during

unloading. This equipment has been carefully

inspected at our factory. Any claim for loss

or damage must be made to the carrier. The

carrier will provide any necessary inspection

reports and/or claim forms.

Apparent Loss or Damage

If there is an obvious loss or damage, it must

be noted on the freight bill or express receipt

and signed by the carrier’s agent; otherwise,

carrier may refuse claim. Do not under any

circumstances connect a damaged cabinet to

the electric circuit. Otherwise, there is the risk

of electric shock or refrigerant leakage!

Concealed Loss or Damage

When loss or damage is not apparent until

after equipment is uncrated, retain all packing

materials and submit a written response to the

carrier for inspection within 15 days.

LOCATION

These merchandisers are designed for

displaying products in air conditioned stores

where temperature is maintained at or below

the ANSI / NSF-7 specified level and relative

humidity is maintained at or below 55%.

Placing refrigerated merchandisers in direct

sunlight, near hot tables or near other heat

sources could impair their efficiency. Like

other merchandisers, these merchandisers

are sensitive to air disturbances. Air currents

passing around merchandisers will seriously

impair their operation. Do NOT allow air

conditioning, electric fans, open doors or

windows, etc. to create air currents around the

merchandiser.

INSTALLATION

Recommended operating ambient

temperature is between

65°F (18°C) to 80°F (26.7°C).

Maximum relative humidity is 55%.

1-2 InstallatIon

P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com

SELF CONTAINED (LOCATION)

Product should always be maintained at

proper temperature. This means that from the

time the product is received, through storage,

preparation and display, the temperature of the

product must be controlled to maximize the

life of the product.

Besure to position self contained

merchandisers properly.

SELF CONTAINED models have vented base

panels to allow air circulation through the

condensing unit.

Allow for a minimum 4 in. clearance from

walls, merchandisers, and any other large

objects near the merchandiser’s vented base

panels (for self contained models). Blocking

or restricting air flow will adversely affect

performance and may damage the refrigeration

system.

MODEL DESCRIPTION

The MNGSC8-A models are island, spot

display merchandisers. Each self contained

model will have its own condensing unit,

factory installed beneath the display area of

the case ready for operation when electrical

service is connected.

MNGSC8-A models are designed for medium

temperature operation. These models have upper

glass on all four sides of the merchandiser.

AIR

INTAKE

AIR

EXHAUST

4 IN

CLEARANCE

This warning does not mean that Hussmann products

will cause cancer or reproductive harm, or is in

violation of any product-safety standards or

requirements. As clarified by the California State

government, Proposition 65 can be considered more of

a‘right to know’ law than a pure product safetylaw.

When used as designed, Hussmann believes that our

products are notharmful. We provide the Proposition

65 warning to stay in compliance with California State

law. It is your responsibility to provide accurate

Proposition 65 warning labels to your customers when

necessary. For more information on Proposition 65,

please visit the California State government website.

August 31, 2018

Case ventilation openings must be

clear of any obstructions. Do not

damage the refrigerant circuit.

Do not use mechanical devices or other

means to accelerate the defrosting

process, other than those recomended

by the manufacturer.

Do not use electrical appliances inside

the food storage compartments of the

case(s), unless they are of the type

recommended by the manufacturer.

P/N 3113125_A 1-3

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. MNGSC8-A Self Contained Merchandisers

UNLOADING

Unloading from Trailer:

Lever Bar (also known as a Mule, Johnson

Bar, J-bar, Lever Dolly, or Pry Lever)

Move the merchandiser as close as possible to

its permanent location and remove all packaging.

Check for damage.Remove all separately

packed accessories. Improper handling may

cause damage to the merchandiser when

unloading.

To avoid damage:

1. Do not drag the merchandiser out of the

trailer. Use a Johnson bar (mule). Use a

forklift or dolly to remove the merchandiser

from the trailer.

2. Use caution when moving case to

setup location. Use care to not damage

refrigeration system. Confirm there are

no refrigerant leaks during startup of the

case(s).

SHIPPING SKID

Each merchandiser is shipped on a skid to

protect the merchandiser’s base, and to make

positioning the case easier.

Remove the top of the crate and detach walls

from each other (if provided). Lift crate from

the skid. Unscrew the case from the skid. The

fixture can now be lifted off the crate skid. Lift

only at base of skid! Remove any braces and/or

skids attached (blanket wrapped merchandiser

may have skids).

DO NOT LAY MERCHANDISER OVER

ON THE FLOOR TO REMOVE SKID.

Once the skid is removed, the merchandiser

must be lifted —NOT PUSHED— to reposition.

To remove the skid, remove screws attaching

skid to the merchandiser.

Check floor where cases are to be set to see if

it is a level area. Determine the highest part of

the floor.

MERCHANDISER LEVELING

Besure to position merchandisers

properly. Level the merchandiser by all four

corners. Merchandiser(s) must be installed

level to ensure proper operation of the

refrigeration system and to ensure proper

drainage of defrost water.

Do NOT stand or walk on top of

merchandiser. Do not store items or

ammable materials atop the unit.

Remove #7 x 2” Philips screws

from merchandiser base

Do NOT remove shipping skid until

the merchandiser is positioned for

installation.

1-4 InstallatIon

P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com

SERIAL PLATE LOCATION

The serial plate is located on the inside of the

merchandiser’s display area.

REFRIGERATION UNIT ACCESS

The lower front panel may be removed by

lifting the panel straight upward and over the

tabs on which it is hanging. For self contained

cases, two screws will have to be removed from

either end of the panel. Make sure all electrical

wiring is secured, and that there is no damage

to the unit from shipment or placement.

Confirm there are no refrigerant leaks during

startup of the case(s). The panel is installed

by reversing the above procedure. Ensure

merchandiser base is properly installed on case

to prevent air circulation problems.

SEALING MERCHANDISER TO FLOOR

If required by local sanitary codes, or if the

customer desires, merchandisers may be sealed

to the floor. Make sure lower front and rear

panels are still able to be removed to service the

condensing unit when sealing around the case.

NOTE: Do not allow trim to cover any intake

or discharge grilles located in the lower front

panel.

SERIAL

PLATE

P/N 3113125_A 1-5

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. MNGSC8-A Self Contained Merchandisers

Hussmann Self-Contained Refrigeration Equipment Start Up Check List

***Please note that failure to follow this start-up document may void your factory warranty***

Step Startup Activity Check

1 Locate, read and keep install/operation manual in a safe place for

future reference.

2 Examine unit. Confirm there is NO damage or concealed damage.

3 Level the unit, side to side and front to rear.

4 Remove all shipping brackets/compressor straps/bolts etc.

5 Unit must be run on a dedicated electrical circuit. Do not use

adapters.

6 Ensure that the proper electrical requirements for the equipment are

supplied.

Verify all electrical wiring is secured andclear ofanysharp edges or

hot lines. Connect plug to the outlet.

9 Verify the condensate drain line is properly trapped and pitched.

10 Verify all required clearances on the sides and back of unit.

11 Verify there are no air disturbances external to the unit. Heat and air

registers, fans, and doors etc.

Advise owner/operator that merchandiser must operate at temperature for 24 hrs prior to loading

with product.

LEGAL DISCLAIMER:

Hussmann shall not be liable for any repair or replacements made without the written consent of Hussmann, or when the product is installed or operated in a manner

contrary to the printed instructions covering installation and service which accompanied such product.

Some water should be placed in the drain to close the siphon and

prevent formation of ice.

1-6 InstallatIon

P/N 3113125_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com

NOTES:

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