Hussmann NAV-4 Bedienungsanleitung

SERIES NAV’S

Display Merchandisers

Medium

Temperature

Merchandisers

PLEASE READ THIS MANUAL BEFORE USING THE PRODUCT

Installation &

Operation Manual

P/N 2400204D

NAV’S Series

May 2006

HUSSMANN CORPORATION

12999 St Charles Rock Road

Bridgeton MO 63044

P/N 2400204D

SHIPPING DAMAGE

1-1

General

All equipment should be thoroughly examined fo

shipping damage before and during unloading.

This equipment has been carefully inspected at ou

factory and the carrier has assumed responsibility

for safe arrival. If damaged, either apparent o

concealed, claim must be made to the carrier.

Apparent Loss Or Damage

If there is an obvious loss or damage, it must be

noted on the freight bill or express receipt an

signed by the carrier's agent; otherwise, carrier may

refuse claim. The carrier will supply necessary

forms.

Concealed Loss Or Damage

When loss or damage is not apparent until afte

equipment is uncrated, a claim for conceale

damage is made. Upon discovering damage, make

request in writing to carrier for inspection within

15 days and retain all packing. The carrier will

supply inspection report and required claim forms.

Location

The Nav’s models are designed for indoo

operation with a recommended operating roo

maximum ambient temperature of 80° F

(27°C)/55% rh Their performance is affected by

store air currents when the doors are open. Do NOT

allow air conditioning, electric fans, or open doors

and windows to create air currents around these

Spot Merchandisers nor should they be exposed to

direct sunlight or other heat sources.

OTE: The condensing unit draws ambient ai

through on side of the unit and discharges hot ai

out by the opposite side. In order to maintain prope

refrigeration performance and compressor life, a

minimum space of 4" (10 cm) must be maintaine

between the refrigerator and surrounding surfaces.

Upper light.

Product stop

Glass pack tempered

glass

Bottom light

Bumper

For maintenance

remove the grill

Bottom

Base

Shelf

Painted ends epoxy

coating

Pan

condenser

Stain steel cover

Switch

Fusible

Receptacle

Solid door

System

Grill

P/N 2400204D

2-1

PREPARATION OF CABINET FOR OPERATION

Removing Cabinet From Crate

Move the display Merchandiser as close as possible

to its permanent location and remove hold-down

rackets at the front and rear of the cabinet. Chec

refrigeration lines to see that they are "free" and no

damage has occurred during ship.

Check fan blades for free operation.

Operation

Always allow the cabinet to warm up to 65° F

efore starting the unit. If the cabinet has just been

delivered from a cold ambient, such as winter, wait

least 16 hours before starting.

LEVELING THE CASE

These cases should be leveled before being installe

definitively, to allow the maximum drain of the

condensed water as well as an appropriate

alignment of the doors and operation. If these cases

don’t have an appropriate leveling, the water can

cause bad operation

These cases are correspondents with installe

levelers.Level the unit according to the place where

it will operate and to adjust like is required.

INSTALLATION OF SHELF

The installed Shelves are modulated. These they

can be retired of their original position and adjuste

to different heights.

Should the unit be disconnected when running, wai

5 minutes before restarting. This allows the

refrigerant pressures to equalize and prevents the

compressor from cycling on its overload protector.

It is advisable to run the unit for 5 to 8 hours before

loading it with product. This is to allow the ai

inside the display merchandiser to cool down.

Load Limits

Each merchandiser has a load limit decal. At no

time should merchandiser be stocked be

ond the

load limits indicated. If load limit is violated, it

may result in loss of contents.

Raise

Lower

P/N 2400204D 3-1

REMOVABLE REAR DOORS

These cases have sliding back door that can remove

and to put on easily. To insert the door you should

e positioned in the superior rails and to move up,

later to be placed in the inferior rail so that it is in

The condenser is fin and tube construction. The ai

is taken in at one side of the cabinet through the

lower grill and discharged out by the opposite side.

The cooling is completed by circulation of ai

through the superior evaporator. Front – back

Defrosting Instructions

To avoid the evaporator from freeze up the cases

AV-4, NAVC-4, NAV-6 & NAVC-6 have a

mechanic defrost timer that is programmed to the

compressor work 23 hrs. and 1 Hr. in defrost.

For NAV-8, AND NAVC-8, the defrost length is

100 minutes.

To change the program of the timer, you should

remove the grill and spin knob of timer in clockwise

to start the defrost.

It is recommend to program the clock to defrost the

evaporator during the night.

REFRIGERATION SYSTEM

Description

All Merchandisers are equipped with a hermetic

compressor. The refrigeration system works with

134a refrigerant. It is really important not to change

or mix refrigerants during service. If anothe

refrigerant than the specified is used, the

erformance of the case will be affected.

The refrigerant used is CFC free, that means it

does not damage the stratosphere ozone layer.

4-1 P/N 2400204D

START UP/OPERATION

Electrical Supply

WARNING

Equipment MUST be GROUNDED!

Wiring of the unit is complete when it is shipped

from the factory. The unit is supplied with a three

conductor electrical cord which extends from a side

of the unit. Plug the unit into correct grounded

outlet. It is recommended that a separate circuit be

run for each cabinet to prevent the possibility o

another appliance blowing a fuse, causing

subsequent loss of product.

Temperature Control

An adjustable mechanic thermostat is provided. The

thermostat is located inside of the case in the right

side

Avoid placing your display merchandiser in the

direct sun light or in the air stream from electric

fans or open doorways.

The temperature is preset from factory

Lighting

A Interior lighting is operated by a external switch

Draining

The case is equipped with a bottom drain tube and a

lug for removing water during defrost and cleaning

rocess. Keep the plug connected to avoid air leaks.

Drain

AV4/6

AV8

5-1P/N 2400204D

Maintenance

MAINTENANCE

Long life and satisfactory performance of any

equipment is dependent upon the care given to it.

To insure efficient operation, proper sanitation an

minimum maintenance, the cabinet should be

thoroughly cleaned, debris removed and the

interior cleaned regularly.

CAUTION

TO AVOID PERSONAL INJURY OR DAMAGE

TO ELECTRICAL COMPONENTS, ALWAYS

DISCONNECT UNIT FROM MAIN POWER

SOURCE BEFORE SERVICING OR

CLEANING

Cabinet Surfaces (Interior and Exterior)

To preserve finish, the cabinet should be cleane

with a mild solution of soap and warm water only,

using a soft cloth or sponge. DO NOT use any type

of caustic soap, abrasive cleaner, or steel wool

scouring pads which can mar the cabinet finish.

Condenser

The air cooled condenser should be cleaned regularly.

A dirty condenser restricts air flow causing decrease

refrigeration efficiency. (Clean every month or as

required).

I) With main power supply disconnected, remove

louver grill from front of lower cabinet.

Most dirt will collect on the air intake side of the

condenser. This is opposite the fan motor.

2) Use a bristle brush to loosen the dust and dir

and remove with a vacuum cleaner. When cleaning

condenser line be ware of fin edges as they are

sharp.

3) If the Display Merchandiser is located in an area

susceptible to grease collecting on the condenser,

scrub with a solution of warm water and detergent.

Care should be taken to keep solution away fro

wiring and electrical components.

Merchandiser Electrical Data

Display Merchandiser data sheets are attached to

the back of this manual. The data sheets provide

case electrical data, electrical schematics, parts lists

and performance data. Refer to the Spot

Merchandiser data sheets and case serial plate fo

electrical information.

PROCEDURE

P/N 2400204D

Table of Contents

SHIPP/NG DAMAGE

General…………………………………..1-1

Apparent Loss or Damage……………….1-1

Concealed Loss or Damage……………...1-1

Location………………………………….1-1

PREPARATION OF CABINET FOR

OPERATION

Removing Cabinet from Skid…………...2-1

Operation………………………………..2-1

Load Limit………………………………2-1

Leveling de case…………………………2-1

Remove doors……………………………3-1

Installation of shelf………………………3-1

REFRIGERATION SYSTEM

Description……………………………….3-1

Defrosting Instructions………….…….…3-1

START UP / OPERATION

Electrical Supply………………………….4-1

Temperature Control………………………4-1

Draining……………………………………4-1

MAINTENANCE

Maintenance……………………….…...…5-1

Cabinet Surfaces…………………………..5-1

Condenser…………………………………5-1

Merchandiser Electrical Data. ……………5-1

IMPORTANT KEEP THIS MANUAL FOR FUTURE REFERENCE

Quality that sets industry standards

These merchandisers are conformed to the:

UL. - Underwriters Laboratories Inc

Nsf, type II – Open food application

Ansi/Nsf 7 /2001

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