Hussmann HGL-1BS Quick guide

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

LIGHTING –
Interior lighting is provided by
electronically powered T-8 lamps located
inside each doorway. The tubes are en-
closed in a patented lens system to main-
tain proper heat around the bulb for
maximum, light intensity and to protect
the product in case of breakage. See the
Anthony “ELS” instructions for lens re-
moval, attached at the back of this book-
let.
Each HGL model has a convenient
ON/OFF switch so lights may be turned
off to conserve energy during hours when
the store is closed. The switch is located
inside the cabinet above the left hand
door. This switch only controls the lights.
208-230 volt power must be shut off at the
main power supply source located within
the store prior to starting any service or
maintenance work.
Light ballasts are located in the
mullions of the door frames. See the An-
thony ballast removal instructions at the
back of this installation booklet.
DOOR SWITCHES –
The switches at the top of the door-
ways operate the evaporator fan motors.
These switches stop the fan motors when
the doors are open.
DOOR FRAME HEATERS –
This cabinet is equipped with both
frame and door heaters. These are ther-
mostatically controlled and will not come
on until the cabinet is at operating tem-
perature. See door mfg. instructions for
heater replacement at the back of this
booklet
ALARM THERMOSTAT
(Heater Delay)
The alarm (heater delay) thermo-
stat is located on the top of the inner liner
in the upper right hand corner behind the
evaporator. The thermostat will not turn
the heaters on until it senses 0º and in
turn will turn the heaters off when its
senses +18º 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 at-
tempting to adjust the valve make sure
the evaporator is either clean or only
lightly covered with frost, and that the
cabinet is within 10º of its expected opera-
tion 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
Page 11

other securely taped to one of the return
bends two thirds of the way through the
evaporator circuit. Some “hunting” of
the expansion valve is normal. The valve
should be adjusted so that during the
hunting the greatest difference between
the two probes is 3º to 5ºF.
Remove valve stem cover and turn
valve stem counter-clockwise to decrease
temperature difference between the
probes. To increase temperature differ-
ence of probes, turn the valve stem clock-
wise. With this adjustment, during a por-
tion of the hunting the temperature dif-
ferences between the two probes may be
less than 3ºF, or at times as low as 0ºF.
Make adjustments of no more than
one half turn of the valve stem at a time
and wait for at least fifteen minutes be-
fore rechecking probe temperature and
making further adjustments. Replace
and tighten cover of the valve stem.
REFRIGERATION –
As stated previously, these cases
can be designed for single or multiplexed
installations. The following is a descrip-
tion of a 'packaged system' which in-
cludes the case, a factory-designed con-
densing unit, electrical line set, and refrig-
eration line set. These systems come pre-
charged for easy field installation.
If it should become necessary to
leak test the system, please adhere to the
following notice:
NOTICE: BECAUSE OF THE CFC AT-
MOSPHERIC CONSIDERATIONS
BEING TAKEN TODAY, WE ASK
THAT LEAK TESTING BE DONE WITH
REFRIGERANT 22 MIXED WITH NI-
TROGEN.
IF THE CONDENSING UNIT
NAMEPLATE DESIGNATES A RE-
FRIGERANT OTHER THAN R-22 RE-
MOVE ALL R-22 FROM THE IMMEDI-
ATE AREA TO AVOID CONFUSION
AFTER LEAK TESTING AND EVACU-
ATING THE UNIT. RECHARGE THE
UNIT WITH PROPER REFRIGERANT.
LEAK TESTING –
***** CAUTION*****
The test gas cylinder must be
equipped with a pressure gauge and regu-
lator so that system test pressures do not
exceed maximum allowable limits. Do not
ever use anything other than a R-22 / Ni-
trogen mixture for leak testing.
Attach a refrigerant test gas cylin-
der to your service manifold and connect
the manifold to the charging port on the
liquid line valve. Charge an R-22 / Nitro-
gen mixture into the system, raising the
pressure to the remote unit’s nameplate
for the low side and high side pressures.
Using an electronic detector, carefully
check the entire system for leaks. Take
special care to inspect all brazed and flare
connections.
EVACUATION –
After the system is proven leak
tight, thoroughly evacuate the system ac-
cording to the following procedure:
Page 12

√ Discharge the refrigerant-nitrogen
mixture, allowing it to blow from the
system as rapidly as possible, into an
empty cylinder. Be sure that all ser-
vice valves and solenoid valves are
open to allow all of the mixture to be
discharged.
√ Connect a deep-drain vacuum pump
to both the high and low side of the
system. Pull a vacuum on the system
to at least 1500 microns.
√ Break the vacuum by adding refriger-
ant into the system until the pressure
is above 0 psig. Always charge the re-
frigerant line into the system through
a new drier in the charging manifold
line. A 16 cubic inch drier is sufficient
for this purpose.
√ Repeat steps 2 and 3 two more times,
the third time evacuating the system
to 500 microns.
REMOTE CONDENSING UNIT -
The remote condensing unit is con-
structed of weather resistant G-90 galva-
nized steel for durability. It includes the
compressor, condenser, head pressure by-
pass valve, receiver (insulated), crankcase
heater, drier, sight glass, condenser fan
motors, fan delay thermostat, dual pres-
sure control, solenoid valve, electrical
box, and quick connects (optional).
COMPRESSOR –
The compressor is mounted on
semi-rigid, rubber pads. There are no
mounting springs so the compressor is es-
sence becomes solid mounted. DO NOT
LOOSEN THE MOUNTING BOLTS ON
THE COMPRESSOR.
FAN DELAY THERMOSTAT –
The fan delay thermostat is con-
nected to the left hand fan motor (as you
face the unit from the electrical box side)
and will leave this fan off at ambients be-
low 65ºF to insure proper condensing tem-
peratures.
HEAD PRESSURE BY-PASS VALVE –
The head pressure by-pass valve is
a pre-set, non-adjustable type. Its function
is to divert the refrigerant to the receiver
when the head pressure falls below the set-
ting so that proper head pressure is main-
tained in the system and liquid is feeding
the thermostatic expansion valve.
CRANKCASE HEATER –
The crankcase heater is located be-
low the compressor on semi-hermetic mod-
els and wrapped around on hermetic mod-
els. The heater is on at all times.
CRANKCASE PRESSURE REGULA-
TOR –
The remote units designed for the
HGL-1-T/B and HGL-2-T/B employ a
crankcase pressure regulator in the suction
line. The CPR is set for 10 psi on the re-
mote unit for both 1 and 2 door. The pur-
pose of the valve is to maintain a low suc-
tion pressure on start-up so that the
Page 13

compressor will start properly. On start-
up, the valve will hold the suction pres-
sure at the desired setting until the suc-
tion pressure has dropped below the set-
ting, then the valve will open.
If it becomes necessary to check or
reset the valve, the case must be warm
such as after a defrost cycle or from an
initial warm case condition. Put a suction
compound gauge on the compressor suc-
tion valve, start the compressor. If the
pressure needs to be reduced turn the ad-
justment screw clockwise or, counter-
clockwise to raise the pressure. DO NOT
SET THE VALVE BASED ON THE
NAMEPLATE AMPERAGE RATING
AS THE PRESSURE SETTING WILL
BE TOO HIGH AND THE COMPRES-
SOR WILL NOT START PROPERLY.
ELECTRICAL BOX –
The electrical box comes pre-wired
except for the electrical line set coming
from the cabinet. Consult the wiring dia-
gram for proper wiring. There is a power
switch in the box for the compressor and
a separate one for the crankcase heater.
ELECTRICAL LINE SET
When the electrical line set is em-
ployed, power is brought to the case first
and the line set is installed between the
case and the remote unit. Consult the
wiring diagram for proper wiring.
BOTTOM MOUNT VERSIONS -
The refrigeration line set is
provided with quick-connect connections
on both ends for installation at the case
and the remote unit.
The line set is tagged with the end
that is to be attached at the case. The line
set is tagged with the end that is to be at-
tached at the case end.
Do not over tighten the quick con-
nects as this will damage the seals.
After the quick connects are in-
stalled at the case end, the factory supplied
‘insulating boot’ must be sealed with con-
tact cement to prevent air leakage that can
cause ice and water to build up on the case.
Nylon ties are further provided to seal the
ends but should not be used solely to seal
the ends. Do not over tighten the ties.
TOP MOUNT VERSIONS –
The refrigeration line set is pro-
vided with quick connects to mount to the
remote condensing unit. The lines are fac-
tory installed and sealed at the case end.
Care should be taken when uncoiling the
line set. Do not over tighten the quick con-
nects as this will damage the seals.
PUMPDOWN SYSTEM ON THE
REMOTE UNIT -
Operation – The pumpdown system shuts
off the flow of refrigerant in the high side
liquid line when the case cycles off or dur-
ing a defrost cycle and pumps the refriger-
ant from the evaporator into the condenser
and receiver.
Page 14

TROUBLE SHOOTING, LIGHTING TROUBLE SHOOTING
WARRANTY and ELECTRONIC LIGHTING
SYSTEM INSTRUCTIONS
TROUBLE SHOOTING CHARTS
TROUBLE PROBABLE CAUSE SOLUTION
Compressor runs continu-
ously, Product too warm
1. Short of refrigerant 1. Leak check. Change
drier. Evacuate and re-
charge
2. Inefficient compressor 2. Replace
3. Dirty condenser 3. Clean
High head pressure 1. Cabinet location too
warm
1. Relocate cabinet
2. Restricted condenser air
flow
2. Clean condenser to re-
move air flow restriction
3. Defective condenser fan
motor
3. Replace
4. Air or non-condensable
gases in system
4. Leak check., change
drier, evacuate, and re-
charge
5. Defective fan delay ther-
mostat
5. Replace
Warm storage temperatures 1. Temperature control not
set properly
1. Reset control
2. Short of refrigerant 2. Leak check, change
drier, evacuate, and re-
charge.
Page 15

TROUBLE SHOOTING CON’T
3. Cabinet location too
warm
3. Relocate
4. Too much refrigerant 4. Change drier, evacuate,
and recharge
5. Low voltage. Compres-
sor cycling on overload
5. Check power
6. Condenser dirty 6. Clean
7. Dual pressure control
not properly
7. Reset control
Compressor runs continu-
ously. Product too cold
1. Defective control 1. Replace
2. Control feeder tube not
in positive contract
2. Assure proper contract
3. Short on refrigerant 3. Leak check, change
drier, evacuate, and re-
charge
Compressor will not start,
no noise
1. Blown fuse or breaker 1. Replace fuse or reset
breaker
2. Defective or broken wir-
ing
2. Repair or replace
3. Defective overload 3. Replace
4. Defective temperature
control
4. Replace
5. Power disconnected 5. Check service cord or
wiring connections
6. Defective dual pressure
control
6. Replace
7. Defective solenoid valve 7. Replace
Page16

TROUBLE SHOOTING CON’T
Compressor will not start,
cuts out on overload
1. Low voltage 1. Contact electrician
2. Defective compressor 2. Replace
3. Defective relay 3. Replace
4. Restriction or moisture 4. Leak check, replace
drier, evacuate and re-
charge
5. Inadequate air over con-
denser
5. Clean condenser
6. Defective condenser fan
motor
6. Replace
7. CRO not set properly 7. Reset to 10 psi.
Icing condition in drain pan 1. Low voltage 1. Check voltage at com-
pressor
2. Cabinet not level 2. Check front to rear level-
ing, adjust legs accordingly
3. Defective drain tube
heater
3. Replace
4. Defective drain pan
heater
4. Replace
LIGHTING SYSTEM
Lights won’t start 1. Check light switch
2. Check continuity to ballast
3. Check to see if bulbs are inserted properly into sock-
ets
4. Check voltage
Page17

Lights flicker 1. Allow lamps to warm up
2. Check lamp sleeve for cracks
3. Check sockets for moisture and proper contact
4. Bulb replacement may be necessary
5. Check voltage
6. New bulbs tend to flicker until used
Ballast hums 1. Check voltage
2. Replace ballast
LIGHTING SYSTEM
ELECTRICAL COMPONENTS
MODEL HGL-1-T/B HGL-2-T/B HGL-3-T/B
Evaporator Fan Morrill SPB5EM2 Same Same
Motor
Light Ballast Huss. #06-S183-1 06-S-183-1 (1) 06-S-183-2 (2)
06-S-183-2 (1)
Fluorescent lamp FO4OW-T8-60” Same Same
Page18

WARRANTY –
Please read carefully to assure prompt and accurate service
Ordering Replacement Parts –
 Contact your nearest Hussmann Distributor.
 Always specify model and serial number of cabinet.
 If correct part number is not known, give a clear description of part itself and its function
in the cabinet or remote unit.
Warranty Parts Procedure –
 Same as items above
 Give original installation date of cabinet and, if possible, forward a copy of the original
invoice or delivery receipt.
 All shipments of in-warranty replacement parts will be invoiced from the factory until
such time as the defective part is returned and proved to be defective by our Quality Con-
trol Department.
 Contact your Hussmann Distributor for instructions on returning in-warranty parts.
 Warranty parts must be returned to the factory within 30 days of date of failure to assure
proper disposition.
 Lack of any of the above information may result in the shipment of the wrong part, or a
delay in shipment.
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Compressor Replacement Procedure –
 Replacement compressors will not be shipped from the Hussmann factory. They may be
obtained from your nearest Copeland Wholesaler.
 Your wholesaler will replace, free of charge, any compressor found to be defective
within twelve months of installation, not to exceed twenty months from the date of
manufacture, as determined by the compressor serial number on the compressor serial
plate.
 For any defective compressor beyond the twelve or twenty month time period, a salvage
value credit will be given too partially offset the invoice for the replacement.
To obtain reimbursement forward to: Hussmann Corporation
140 East State Street
Gloversville, NY
12078
the following information:
1. The cabinet model and serial number
2. A copy of the wholesaler’s invoice, along with a copy of the salvage value credit.
WIRING DIAGRAMS ARE ATTACHED AT THE BACK OF THIS BOOKLET
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