Hussmann HGL-1BS Guide rapide

January 2006

HUSSMANN - GLOVERSVILLE

INSTALLATION & SERVICE

INSTRUCTIONS

FOR

HGL-1, 2 & 3 BOTTOM & TOP MOUNT

REMOTES

P/N OII – HGL Remotes

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

TABLE OF CONTENTS

Page

Introduction 5

Inspection 5

Location 5

Skid 5

Leg Installation (Top Mounts only) 5

Leveling and Sealing (Bottom Mounts only) 6

Top Decorative Panel Removal 6

Shelves 6

Air Distribution and Rear Flue Spacer 6

ElectricalConnections 6

Serial Plate Information 7

Start-UpProcedure 7

General Up-Keep, Care & Cleaning, Routine Maintenance

Operation and Maintenance 8

Power Switches 8

Temperature Control 8

Thermometer 9

ElectricalEnclosure 9

DefrostTimeClock 10

Defrost Heater Thermostat 10

Defrost Heater Replacement 10

Lighting Door Switches 11

Door and Frame Heaters 11

Expansion Valve Adjustment 11

Alarm Thermostat (Heater Delay) 11

Refrigeration, Leak Testing, and Evacuation 12

Remote Condensing Unit and Compressor 13

FanDelayThermostat 13

Head Pressure By-Pass Valve 13

Crankcase Heater 13

Crankcase Pressure Regulator 13

TABLE OF CONTENTS CON’T

Page

ElectricalBox 14

ElectricalLineSet 14

RefrigerationLineSets 14

PumpdownSystemontheRemoteUnit 14

SettingupthePumpdownSystem 15

Trouble Shooting Charts 16-19

ElectricalComponentsList 19

Warranty and Parts Information 20

Ordering Replacement Parts 20

Warranty Parts Procedure 20

Compressor Replacement Procedure 21

INSTALLATION CHECK LIST

HGL / HGM / HGS UPRIGHT CABINETS

Level cabinet front to back and left to right. Level doors and ad-

just torque as needed. On HGL cabinets, it is important this be

done to ensure proper operation of evaporator fan switches.

Is proper voltage supplied to cabinet?

Cut and remove compressor shipping band (HGL only)

Is timer set for correct time of day? Fail-safe at 40 minutes, de-

frost pins at 10 p.m. and 6 a.m. (HGL only)

Are electrical connections tight and tubing positioned to prevent

rubbing? Is drain hose in water pan and trapped?

Does the condenser fan blade (s) turn freely?

Is the temperature control set per the following specifications?

Control Set At Cabinet Temperature

HGL -18 -13 off -9 on

HGM/HGS +29 to 30 +34 off +40 on

Revised 5/99 lw

For more details on the above, refer to the Installation Booklet

sent with the cabinet.

INTRODUCTION –

Hussmann HGL B/T models are

remote, low temperature, vertical display

merchandisers for ice cream and frozen

foods. Design features include heated

glass doors for fog free visibility, auto-

matic defrost, and efficient foamed in

place non-CFC insulation. These models

are designed for remote installation as

single cases or multiplexed with other

cases.

INSPECTION –

Upon receipt of the cabinet, care-

fully examine the crating for damage. If

crate is damaged, make a note on the de-

livery ticket before signing. Carefully re-

move shipping crate and examine cabinet

for “concealed” damage. If damage is

found, contact the delivery carrier imme-

diately and have his agent prepare an in-

spection report for the purpose of filing a

claim. This is your responsibility.

LOCATION –

Avoid locating the cabinet where

direct sunlight would shine into the fix-

ture or where drafts from air condition-

ing grills, fans and open doors could af-

fect its operation.

INSTALLATION and START-UP –

SKID –

The skid should be left on the unit

until it is near its final location. The skid

provides protection for both case and

floor. The skid is removed by raising one

end of the case approximately six inches.

BLOCK SECURELY and remove

the two skid bolts on the raised end. The

procedure 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 loca-

tion and the skid has been removed, the

NSF approved legs should be installed.

The legs are packaged inside the cabinet.

Replace the tape and door blocks. To in-

stall legs, raise one end of the cabinet ap-

proximately eight (8) inches, BLOCK SE-

CURELY, and install two legs. The leg

mounting plates are factory installed and

contain a 1/2 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 posi-

tioned in its final location and leveled.

The cabinet is leveled by turning

the bottom section of each leg. The self-

closing doors require the cabinet to be

properly 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.

Page 5

LEVELING – SEALING – Bottom

Mounts Only

The case can be leveled by shimming un-

der the cabinet base frame, or by install-

ing 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 following drawing, using an NSF ap-

proved material such as General Electric

RTV-102 silicone sealer or an equivalent

BOTTOM LOU-

VERED PANEL REMOVAL -

The louvered panel provides ac-

cess to the electrical box. Remove panel

by removing shipping screw (s) at the

bottom and lifting up and pulling for-

ward. Remove shipping screw on electri-

cal box to allow the electrical box to slide

out for servicing.

TOP DECORATIVE PANEL RE-

MOVAL –

The top decorative panel is re-

moved by lifting up and pulling forward.

SHELVES –

Each cabinet is provided with 4-

cantilever shelves per door that are ad-

justable on 1-inch increments and are

tiltable. Each cabinet also has one bot-

tom 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 extend product past the

front edge of the shelf. Extending past the

edge will seriously effect internal air flow

through out the cabinet.

Shelves are UL rated for a maxi-

mum load of 123 lbs. DO NOT OVER-

LOAD SHELVES.

AIR DISTRIBUTION AND REAR FLUE

SPACER –

Air is drawn through the evapora-

tor from front to rear and is discharged

down the back wall, returning up the face

of the glass door to the return air grill.

NOTE: Rear wire grid must be in place

as this forms a discharge air flue at the

back of the cabinet.

ELECTRICAL CONNECTIONS –

The HGL-2, 3,-T/B require a con-

duit connections of 208-230 supply volt-

age. It is very important for safety to you

and your customers to have the cabinet

properly grounded. Conduit connections

are required for positive grounding. The

electrical installation should be done by a

qualified electrician in accordance with

the National Electrical Code and/or local

codes.

Silicone

Sealant

Floor

Page 6

NOTE: Connecting this unit to any elec-

trical 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.

SERIAL PLATE INFORMATION –

The serial plate is located in the

upper left hand corner of the case inte-

rior. It has all the pertinent information

needed for proper electrical installation.

The serial plate should not be removed

for any reason.

START UP PROCEDURE -

√

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 factory set

for 2 defrost periods in 24 hours. (6

a.m. and 10 p.m.)

√

Check the cabinet thoroughly for

loose nuts and bolts and electrical

connections. Inspect the refrigera-

tion lines for any visible damage or

chafing.

√

Replace the electrical box cover.

√

Start the cabinet and allow to pull

down to operating temperature be-

fore loading.

BTU CAPACITIES -

RATING TEMP ºF

BTU/HR EVAP COND AMB

1-T/B 3100 -20 110 90

2-T/B 4160 -20 110 90

3-T/B 5900 -20 110 90

ELECTRICAL SPECIFICATIONS

RUN

HZ/PH VOLTS AMPS FUSE WT.

1-T 60/1 208-230 7.9 15AMP 547

2-T 60/1 208-230 8.8 15AMP 755

3-T 60/1 208-230 11.0 15AMP 986

1-B 60/1 208-230 7.9 15AMP 547

2-B 60/1 208-230 8.8 15AMP 816

3-B 60/1 208-230 11.0 15AMP 1065

All cases use R-404A refrigerant. Please

check the serial plate for the specific re-

frigerant used.

Page 7

CARE and CLEANING –

To insure good sanitation, appear-

ance, and minimum maintenance, the cabi-

net should be cleaned and washed regu-

larly as use demands. Clean with mild de-

tergent and warm water. DO NOT USE

AN ABRASIVE CLEANER OR STEEL

WOOL AS THEY WILL MAR THE FIN-

ISH.

ROUTINE MAINTENANCE –

Under normal conditions, after the

cabinet is installed and running, very little

maintenance should be required. How-

ever, the following list of housekeeping

practices will assure trouble-free opera-

tion.

√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.

OPERATION and MAINTENANCE

POWER SWITCHES -

The power switch is located at the

electrical box which is behind the bottom,

louvered access panel (bottom mount) or

GENERAL UP-KEEP, CARE and CLEANING, ROUTINE

MAINTENANCE, and

OPERATION MAINTENANCE

behind the top decorative panel (top

mounts). The switch will shut off all

power.

TEMPERATURE CONTROL –

The electronic temperature con-

trol is located in the electrical box. The

temperature control does not have an

‘OFF’ position. Adjustments may be

made by turning the knob on the face of

the dial. Turning it clockwise will give

warmer temperatures while counter-

clockwise will give colder temperatures.

There is also an adjustable temperature

differential (the difference between the

cut-in temperature and the cut-out tem-

peratures) located on the back of the tem-

perature control cover. When adjusting

the differential, the temperature setting

may also have to be adjusted.

A picture of this Electronic Tem-

perature Control board layout and termi-

nal location is on the next page.

The control has a range of –20ºF to

+100ºF with a differential of 1º to 30º. It

is factory set for approximately –18F with

an 10º differential. The temperature

should be checked with a thermometer

other than the case thermometer after it is

running to insure that the case is running

at the proper temperature for the prod-

uct.

Page 8

THERMOMETER –

The thermometer is located by

looking through the right hand door onto

the right hand end of the fan plenum.

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 restocked 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 ther-

mometer and temperature control sense

discharge air temperature which is 5-10º

colder than the case temperature.

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.

Page 9

THE CABINET SUPPLY BREAKERS

SHOULD BE DISCONNECTED BE-

FORE REMOVING THE ENCLOSURE

COVER.

DEFROST TIME CLOCK –

The timer is factory pre-set for two

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

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

timer must be adjusted to the proper time

of day when the cabinet is started. The

timer is adjusted by turning the knurled

adjustment knob in the center of the dial

face counter-clockwise until the time indi-

cator corresponds with the correct time of

day. The defrost pins should be checked

for tightness. The timer will require re-

adjusting 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 additional de-

frost during the night or a time when the

cabinet has the lowest usage.

Defrost is time initiated and tem-

perature terminated. If cases are multi-

plexed, the defrost thermostats can be

wired in series so that the cases can be

temperature terminated.

If the thermostat should fail, the

timer is equipped with a failsafe set at 40

minutes that will allow defrost to termi-

nate on time.

DEFROST HEATER THERMOSTAT –

The defrost heater thermostat is

clamped to the evaporator outlet tube. It

is a bi-metal thermostat that is tied in se-

ries with the evaporator 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 32ºF

and defrost will terminated when the stat

senses 58ºF.

DEFROST HEATER REPLACEMENT

The defrost heaters are firmly em-

bedded 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, 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.

Page 10

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