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