Hussmann HGL-1BS Quick guide

January 2006

HUSSMANN - GLOVERSVILLE

INSTALLATION & SERVICE

INSTRUCTIONS

FOR

HGL-1, 2 & 3 BOTTOM / TOP MOUNT

Self-Contained Merchandisers

P/N OII – HGL Self-Contained

January 2006

First Call for help (US and Canada):

1-800-922-1919

Soporte Tècnico y Asistencia (Mèxico):

01-800-522-1900

For a Service Network Locator and other

Information visit us at

www.hussmann.com

select Worldwide Locations

Page 1

TABLE OF CONTENTS

Introduction 3

Inspection Upon Receipt 3

Proper Location and Clearance 3

Initial Set-Up 3 & 4

Condensate Pan 4

Bottom Louvered Panel Removal 4

Top Decorative Panel Removal 4

Compressor 4

Shelves 4

Air Distribution and Rear Flue Spacer 4

Electrical Connections, Volts, Amperage and Ship Wt. 5

Capacities 5

Start Up and Loading 6

General Upkeep and Cleaning 6

Power Switches 6

Temperature Control 7

Electrical Enclosure 7

Defrost Time Clock 7

Thermometer 8

Defrost Heater Thermostat 8

Defrost Heater Replacement 8

Lighting 8

Door Switches 8

Door and Frame Heaters 8

Reversible Doors 9

Alarm Thermostat (heater delay) 9

Expansion Valve Adjustment 9

Refrigeration 9

Leak Testing 9

Evacuation 10

Operational Data 10

Receiver 10

Crankcase Pressure Regulator 10 & 11

Page 2

TABLE OF CONTENTS Con’t

Trouble Shooting Charts 12 & 13

Trouble Shooting Lighting System 13

Warranty 14 & 15

Electrical Components Replacement List 15

Commercial Door Literature 17-25

HUSSMANN CORPORATION LIMITED WARRANTY 26-27

Page 3

INTRODUCTION, INSPECTION UPON RECEIPT , PROPER LOCATION

CLEARANCE, AND INITIAL SET-UP

Introduction –

Hussmann HGL-TS/BS models are

self-contained, low temperature, vertical dis-

play merchandisers for ice cream and frozen

foods. Design features include heated glass

doors for fog free visibility, automatic defrost,

efficient foamed in place non-CFC insulation,

cord connection for 208-230 volt application

and balanced refrigeration systems for energy

saving performance.

Inspection upon receipt –

Upon receipt of the cabinet, carefully

examine the crating for damage. If crate is

damaged, make a note on the delivery ticket

before signing. Carefully remove shipping

crate and examine cabinet for “concealed”

damage. If damage is found, contact the de-

livery carrier immediately and have his agent

prepare an inspection report for the purpose

of filing a claim. THIS IS YOUR RESPONSI-

BILITY.

Proper Location & Clearance –

Avoid locating the cabinet where direct

sunlight would shine into the fixture or where

drafts from air conditioning grills, fans and

open doors could affect its operation.

Because the condensing unit is located

at the top of the HGL-TS, at least twelve (12)

inches of clearance should be allowed at the

rear of the cabinet and at the top of the case.

This clearance is necessary to provide free air

movement to and from the condenser for

maximum operating efficiency.

Because the condensing unit is located on the

bottom of the HGL-BS, at least twenty four (24)

inches of clearance should be allowed in front of

the case and six (6) inches of clearance at the

rear to provide the necessary free air movement

to and from the condenser for maximum operat-

ing efficiency.

Initial Set-Up

Skid –

The skid should be left on the case until it

is near its final location. The skid provides pro-

tection for both case and floor. The skid is re-

moved by raising one end of the case approxi-

mately six inches. Block securely and remove

the two skid bolts on the raised end. The proce-

dure is repeated on the opposite end. When the

skid bolts are removed, the case may be slid off

the skid.

Leg Installation – Top Mounts Only

After the case is near its final location

and the skid has been removed, the NSF ap-

proved legs should be installed. The legs are

packaged inside the cabinet. Replace the tape

and door blocks. To install legs, raise one end of

the cabinet approximately eight (8) inches, block

securely, and install two legs. The leg mounting

plates are factory installed and contain a ½ x 13

tapped hole to mate with the leg assembly. The

procedure is repeated on the opposite end. The

3-door requires legs in the center. With cabinet

legs installed, the cabinet should be positioned in

its final location and leveled.

The cabinet is leveled by turning the bot-

tom section of each leg. The self-closing doors

require the cabinet to be properly

Page 4

leveled. End to end leveling will make the door (s)

close with uniform speed and tightness. A slight

pitch from front to rear is desirable. THE CABI-

NET BACK SHOULD NEVER BE HIGHER

THAN THE FRONT.

Leveling & Sealing – Bottom Mounts Only

The case can be leveled by shimming under

the cabinet base frame, or by installing optional

levelers. The self-closing doors require the cabinet

to be properly leveled. End to end leveling will

make the doors close

with uniform speed and tightness. A slight pitch

from front to rear is desirable. Once level the case

should be sealed to the floor as shown in the fol-

lowing drawing, using an NSF approved material

such as General Electric RTV-102 silicone sealer

or an equivalent.

Conensate Pan –

An electrically heated (300W, 208-230v)

condensate pan is provided to evaporate the de-

frost water. The heated condensate pan slides

onto the slide plate on the cabinet bottom on both

the TS and BS cases. The pan is removable for

cleaning. A vinyl drain tube is provided for con-

nection to the heated condensate pan. The drain

must be trapped to guard against drain line freez-

ing and for good sanitation practice.

Bottom Louvered Panel Removal –

The louvered panel provides access to the

condensing unit and the electrical box. Remove

panel by removing shipping screw (s) at

bottom and lifting up and pulling forward. Re-

move shipping screw on electrical box to allow the

electrical box to slide out for servicing.

Top Decorative Panel Removal –

The top decorative panel is removed by lift-

ing up and pulling forward.

Compressor –

The compressor is mounted on springs and

banded for shipping purposes and this band needs

to be cut upon installation. Do not loosen the com-

pressor mounting bolts, as these are factory pre-set

for proper riding on the springs.

Shelves –

Each cabinet is provided with 4-cantilever

shelves per door that are adjustable on 1-inch in-

crements and are tiltable. Each cabinet also has

one bottom shelf per door. These shelves have one

inch legs to allow proper airflow in the cabinet.

Behind the shelves are wire flue spacers which also

allow for proper airflow. All shelves and flue spac-

ers are white, epoxy coated for durability and ease

of cleaning. Shelves should be adjusted to desired

operating height.

When loading product into the cabinet, care

should be taken not to load product so that it

touches the evaporator coil cover, also, do not ex-

tend product past the front edge of the shelf. Ex-

tending past the edge will seriously effect internal

air flow through out the cabinet.

Shelves are UL rated for a maximum load of

123 lbs. DO NOT OVERLOAD SHELVES.

Silicone

Sealant

Floor

Page 5

During the defrost cycle, the cover gets warm

and some product softening may occur if prod-

uct is touching the cover.

Air Distribution & Rear Flue Spacer –

Air is drawn through the evaporator

from front to rear and is discharged down the

back wall, returning up the face of the glass door

to the return air grill.

Electrical Connections, Volts, Amperage and Ship Wt.

The HGL cases are supplied with a supply cord as charted below with a grounding

prong for operation on 208-230 power supplies. Do not remove the grounding prong under

any circumstances.

NOTE:

Connecting this unit to any electrical supply other than

specified on the serial plate will void the warranty and may result

in serious damage to the unit. The cabinet should be supplied with

its own service.

Model Cord Amperage Plug Nema Designation

HGL-1-BS/TS 15 6 – 15 P

HGL-2-BS/TS 15 6 – 15 P

HGL-3-BS/TS 20 6 – 20 P

Electrical –

Unit Run Ship

H.P. HZ/PH Volts Amps Fuse Size Wt.

1-BS ¾ 60/1 208-230 9.0 15 amp 667

2-BS 1 60/1 208-230 9.5 15 amp 936

3-BS 1 ½ 60/1 208-230 12.5 20 amp 1225

1-TS ¾ 60/1 208-230 9.0 15 amp 667

2-TS 1 60/1 208-230 9.5 15 amp 875

3-TS 1 ½ 60/1 208-230 12.5 20 amp 1146

NOTE -

Rear wire flue spacer must be in place as

this forms a discharge air flue at the back of

the cabinet.

Page 6

Capacities –

RATING TEMPS ºF

Model BTU/HR EVAP COND AMB

HGL-1-BS/TS 3100 -20 110 90

HGL-2-BS/TS 4160 -20 110 90

HGL-3-BS/TS 5900 -20 110 90

The HGL cases use R-404A refrigerant. Check the serial plate for the specific refrigerant charge

used. The serial plate is located in the upper left-hand corner of the case interior. It has all the

pertinent information needed for proper electrical installation. The serial plate should not be re-

moved for any reason.

INITIAL START-UP AND LOADINGGENERAL UPKEEP AND CLEANING

OPERATION AND MAINTENANCE

Start-Up and Loading –

 After the wiring has been completed, set the

defrost timer for the correct time of day,

making sure the defrost pins are secure in

the face of the clock. HGL cabinets are fac-

tory set for 2 defrost periods in 24 hours (6

a.m. and 10 p.m.)

 Cut the band holding the compressor in

place during shipping.

 Check the cabinet thoroughly for loose nuts

and bolts and electrical connections. Inspect

the refrigerant lines for any visible damage

or chafing.

 Replace the electrical box cover.

 Start the cabinet and allow to pull down to

operating temperature before loading.

General Upkeep & Cleaning –

To insure good sanitation, appearance, and

minimum maintenance, the cabinet should be

cleaned and washed regularly as use demands.

Clean with mild detergent and warm water.

. Do not use an abrasive cleaner or steel

wool, as they will mar the finish.

Under normal conditions, after the

cabinet is installed and running, very little

maintenance should be required. However,

the following list of housekeeping practices

will assure trouble-free operation.

♦ Check operation of condenser fan motors.

Fan blades must turn freely.

♦ Check drain pan and heater to prevent

accidental overflow.

♦ Make sure doors are closing properly and

that the gaskets seal.

♦ Make sure all evaporator fan motors are

running. These can be seen through grill

inside cabinet.

♦ Clean the cabinet with a mild detergent.

This will insure good sanitation, and

minimize maintenance. Never use an

abrasive as this could mar the finish.

Page 7

♦ A regular program should be set up for the

cleaning of the fin-and-tube condenser.

Normally, this cleaning is required every 3

to 4 months, but the individual store appli-

cation may shorten or lengthen this time pe-

riod. Dust and dirt accumulation can cause

serious efficiency loss. On BS cases (bottom

mounts) access is gained to the unit area by

removing the louvered grille. The unit

slides forward to facilitate cleaning and for

service. Care should be taken when pushing

the unit back in place to insure that the pull-

out coil does not become kinked or damaged

in some way.

Power Switches –

The power switch is located at the elec-

trical box, which is behind the top decorative

panel (TS models) or bottom louvered panel

(BS models). The switch will shut off all

power to the case.

Before any service is performed on this

piece of equipment, make sure the power sup-

ply to the cabinet is disconnected.

Temperature Control –

The electronic temperature control is

located in the electrical box. The temperature

control does not have an 'OFF' position. Ad-

justments may be made by turning the knob on

the face of the dial. Turning it counter clock-

wise will give colder temperatures. There is

also an adjustable temperature differential (the

difference between the cut-in temperature and

the cut-out temperature) located on the back of

the temperature control cover. When adjusting

the differential, the temperature setting may

also have to be adjusted.

The control has a range of –20° F to +100°F

with a differential of 1° to 30°. It is factory

set for approximately – 18° F with a 8° dif-

ferential. The temperature should be

checked with a thermometer other than the

case thermometer after it is running to in-

sure that the case is running at the proper

temperature for the product.

A picture of this Electronic Tempera-

ture Control board layout and terminal loca-

tion is at the back of this book.

Electrical Enclosure –

The electrical enclosure contains the

defrost time clock and temperature control.

For servicing convenience, access is gained

by removing the access panel and electrical

box cover. The cabinet supply breakers

should be disconnected before removing the

enclosure cover.

Defrost Time Clock –

The timer is factory pre-set for two

(2) defrost cycles per day at 6:00 a.m. and

10:00 p.m. with a 40 minute failsafe. The

timer

Page 8

must be adjusted to the proper time of day

when the cabinet is started. The timer is ad-

justed by turning the knurled adjustment knob

in the center of the dial face counter-clockwise

until the time indicator corresponds with the

correct time of day. The defrost pins should be

checked for tightness. The timer the cabinet

has the lowest usage.will require readjusting

after a power failure or the cabinet supply is

turned off for extended periods of time. If an

additional defrost is required due to ambient or

cabinet usage conditions, do not put a defrost

during the middle of the day. Put any addi-

tional defrosts during the night or at a time

when the cabinet has the lowest usage.

Defrost is time initiated and temperature

terminated.

If the thermostat should fail, the timer is

equipped with a failsafe set at 40 minutes that

will allow defrost to terminate on time.

Thermometer –

The thermometer is located by looking

through the right hand door onto the right

hand end of the fan grill.

The Thermometer will also warm up

rather rapidly when the case door is held open

for a time such as when the case is being re-

stocked or a shopper is making a decision on a

product. After the door is closed it will take

some time for the thermometer to pull back

down to the case temperature. The thermome-

ter and temperature control sense discharge air

temp. which is 5-10° colder than the case tem-

perature.

The thermometer may be replaced by re-

moving the two screws holding it to the evapora-

tor fan grill. Lower the evaporator coil cover

by removing the brass screws located at the two

front corners of the cover, and backing out the

screws along the front edge of the cover holding

it to the grill. Follow the sensing lead to the cen-

ter rear of the evaporator coil. Loosen the clip

holding it to the bracket and slide the end of the

lead out.

When installing the new thermometer be

sure to run the lead of the new thermometer

through the hole in the fan grill first. Finish as-

sembly in reverse order. The same procedures

should be followed in the event you wish to clean

the end of the sensing lead.

Defrost Heater Thermostat –

The defrost heater thermostat is clamped

to the evaporator outlet tube. It is a bi-metal

thermostat that is tied in series with the evapora-

tor fans for a delay and with defrost time clock

solenoid to end defrost when the temperature

has been satisfied. The evaporator fans will not

come on until the thermostat senses 32° F and

defrost will terminate when the stat senses 58° F.

Defrost Heater Replacement –

The defrost heaters are firmly embedded

in the evaporator and held in place with spring

clips. To remove the heater, first remove all the

spring clips and pull the defective heater out of

the slots in the evaporator, starting at the wire

supply lead.

The replacement heater should be firmly

seated in the slots by using a small block of wood

and a mallet. After the new heater is in place,

Page 9

replace all of the spring retaining clips to assure

heater retention. One lead of the defective

heater may be used to pull the new leads

through the cabinet to the respective terminals

as marked on each lead.

NOTE - Care must be taken to make sure the

drain stub is correctly inserted in the cabinet

drain tube for proper drainage.

Lighting –

Electronically powered T-8 lamps lo-

cated inside each doorway provide interior

lighting. The tubes are enclosed in a patented

lens system to maintain proper heat around the

bulb for maximum light intensity and to protect

the product in case of breakage. See the An-

thony ELS instructions attached at the back of

this booklet for lens removal.

Each HGL model has a convenient ON/

OFF switch so lights may be turned off to con-

serve energy during hours when the store is

closed. The switch is located inside the cabinet

above the left-hand door. This switch only con-

trols the lights. 208-230 volt power must be

shut off at the main power supply source lo-

cated within the store prior to starting any ser-

vice or maintenance work.

Light ballast are located in mullions of the door

frames. See the Anthony ballast removal in-

structions at the back of the booklet.

Door Switches –

The switches at the top of the doorways

operate the evaporator fan motors. These

switches stop the fan motors when the doors are

open.

Door and Frame Heaters –

This cabinet is equipped with both

frame and door heaters. These are thermo-

statically controlled and will not come on until

the cabinet is at operating temperature. See

door mfg instructions for heater replace-

ment at the back of this booklet.

Alarm Thermostat (heater delay) –

The alarm (heater delay) thermostat is

located on the top of the inner liner in the up-

per right hand corner behind the evaporator.

The thermostat will not turn the heaters on

until it senses 0° and in turn will turn the

heaters off when it senses +18°F. This is so

that unwanted heat will not be added to the

case during defrost or if the case refrigeration

system fails.

Expansion Valve Adjustment –

Expansion valve must be adjusted to

fully feed the evaporator. Before attempting

to adjust the valve make sure the evaporator

is either clean or only lightly covered with

frost, and that the cabinet is within 10° of its

expected operation temperature. Adjust the

expansion valve as follows:

Attach two sensing probes to the

evaporator, one under the clamp holding the

expansion valve sensing bulb and the other

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