Hussmann HGL-1 Installation Manual
HGL- 1, 2 & 3 BS, TS
®
Bottom / Top Mount
Low Temperature
Remote and Self Contained
Glass Door Merchandisers
HGL-2BS
Operation Manual
IMPORTANT
Keep in store for future reference!
HGL-3TS
Installation &
P/N 0515296_E
April 2015
Spanish 0531287
French 0531288
P/N 0515296_E iii
®
IMPORTANT
KEEP IN STORE FOR FUTURE REFERENCE
Quality that sets industry standards!
12999 St. Charles Rock Road • Bridgeton, MO 63044-2483
®
U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900
www.hussmann.com
© 2015 Hussmann Corporation
P/N 0515296_E TABLE OF CONTENTS v
ANSI DEFINITIONS ................. vi
INSTALLATION
Certification
Hussmann Product Control
Shipping Damage
Location
Self Contained Location
Model Description
Unloading
Exterior Loading
Shipping Skid
Merchandiser Leveling
Leg Installation
Serial Plate Location
Refrigeration Unit Access
Sealing Merchandiser to Floor
........................ 1-1
........... 1-1
................... 1-1
........................... 1-1
.............. 1-2
.................. 1-4
......................... 1-4
.................... 1-4
...................... 1-4
............... 1-5
(Top Mounts Only) ....... 1-5
................. 1-5
............. 1-6
......... 1-6
Air Distribution & Rear Flue Spacer
Shelves
Checklists
............................ 1-6
.......................... 1-7
.... 1-6
Display ............................ 3-2
Start-Up
Sequence of Operation Diagram
Alarms and Codes
Defrost Termination Switch
Manual Defrost
Temperature Adjustment
Sensor to Control Adjustment
Controls and Adjustments
Start Up
Crankcase Pressure Regulator
Receiver
TEV Adjustment
Load Limits
Stocking
Thermometer
Lighting
Door Switches
Door Defrost Heater Thermostat
Alarm Thermostat
........................... 3-2
....... 3-4
................... 3-5
........... 3-5
..................... 3-5
............. 3-6
......... 3-7
............ 3-8
........................... 3-9
......... 3-9
........................... 3-9
................... 3-10
....................... 3-11
.......................... 3-11
...................... 3-12
.......................... 3-12
..................... 3-12
...... 3-12
.................. 3-12
ELECTRICAL / REFRIGERATION
Merchandiser Electrical Data
Field Wiring
........................ 2-1
.......... 2-1
Electrical Connections . . . . . . . . . . . . . . . . 2-1
Electrical Enclosure
Power Switches
Electrical Outlet
Refrigeration (Self Contained)
Refrigeration (Remote)
Line Sizing (Remote)
Koolgas (Remote)
Compressor
........................ 2-3
Condensate Pan
Air Distribution and Rear Flue Spacer
NOTES:
........................... 2-4
.................. 2-1
..................... 2-1
..................... 2-1
......... 2-2
............... 2-2
................. 2-2
................... 2-2
..................... 2-3
.. 2-3
START UP / OPERATION
Safe-NET III User Instructions
User Instructions
.................... 3-1
........ 3-1
MAINTENANCE
Care and Cleaning
Do NOT Use:
Do:
............................... 4-1
Cleaning Stainless Steel Surfaces
Cleaning Coils
Cleaning Condensate Pan
Maintaining Fluorescent Lamps
................... 4-1
...................... 4-1
....... 4-2
...................... 4-2
............. 4-3
........ 4-4
SERVICE
Replacing Fan Motors and Blades
Replacing Thermometer
............... 5-1
Defrost Heater Replacement
Troubleshooting Guide
Lighting Problem / Solution
Replacing Door Parts
Servicing Lighting
Replacement Parts List
............... 5-2
........... 5-4
................ 5-5
................... 5-5
............... 5-6
...... 5-1
.......... 5-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
HGL Merchandisers
vi
APPENDIX — TECHNICAL DATA
* * * * * * * * * * * * * * * * * * * * * * * * * *
HGL-1BS — Plan View
HGL-2BS & HGL-3BS — Plan View
HGL-1TS — Plan View
HGL-2TS & HGL-3TS — Plan View
HGL Dimensions & Electrical Data
Cross Sections and Refrigeration Data
HGL Wiring Diagrams
.............. A-1
... A-2
............. A-3
.. A-4
... A-5
.. A-6
.............. A-7
REVISION HISTORY
REVISION E — Revised Parts List
REVISION D — Added Checklists Page 1-7; Added
Warning Page 1-3; Cleaning Coils 4-3; Maintaining
Fluorescent Lights 4-4. Checklist 4-5. New Replacement
Parts List, New Wiring Diagrams, New Sensor drawing
3-7, Replacing door parts Page 5-5
REVISION C — JUNE 2013
Replaced wiring diagrams; added new for each model
A-9
ANSI Z535.5 DEFINITIONS
• DANGER – Indicate[s] a hazardous
situation which, if not avoided, will
result in death or serious injury.
• WARNING – Indicate[s] a hazardous
situation which, if not avoided, could
result in death or serious injury.
• CAUTION – Indicate[s] a hazardous
situation which, if not avoided, could
result in minor or moderate injury.
• NOTICE – Not related to personal injury –
Indicates[s] situations, which if not avoided,
could result in damage to equipment.
Updated drawing on Page 3-7
REVISION B — FEBRUARY 2012
Revised to B for Wind Chill purposes
ORIGINAL ISSUE — JANUARY 2011
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P/N 0515296_E 1-1
INSTALLATION
CERTIFICATION
These merchandisers are manufactured to
meet ANSI / National Sanitation Foundation
®
(NSF
) Standard #7 requirements. Proper
installation is required to maintain certification.
Near the serial plate, each case carries a label
identifying the type of application for which
the case was certified.
ANSI/NSF-7 Type I - Display Refrigerator / Freezer
Intended for 75°F / 55% RH Ambient Application
ANSI/NSF-7 Type II - Display Refrigerator / Freezer
Intended for 80°F / 55% RH Ambient Application
ANSI/NSF-7 - Display Refrigerator
Intended for Bulk Produce
HUSSMANN PRODUCT CONTROL
SHIPPING DAMAGE
All equipment should be thoroughly examined
for shipping damage before and during
unloading. This equipment has been carefully
inspected at our factory. Any claim for loss
or damage must be made to the carrier. The
carrier will provide any necessary inspection
reports and/or claim forms.
Apparent Loss or Damage
If there is an obvious loss or damage, it must
be noted on the freight bill or express receipt
and signed by the carrier’s agent; otherwise,
carrier may refuse claim.
Concealed Loss or Damage
When loss or damage is not apparent until
after equipment is uncrated, retain all packing
materials and submit a written response to the
carrier for inspection within 15 days.
The serial number and shipping date of all
equipment is recorded in Hussmann’s files
for warranty and replacement part purposes.
All correspondence pertaining to warranty or
parts ordering must include the serial number
of each piece of equipment involved. This is to
ensure the customer is provided with the correct parts.
Recommended operating ambient
temperature is between
65°F (18°C) and 75°F (23.9°C).
Maximum relative humidity is 55%.
LOCATION
These merchandisers are designed for
displaying products in air conditioned stores
where temperature is maintained at or below
the ANSI / NSF-7 specified level and relative humidity is maintained at or below 55%.
Placing refrigerated merchandisers in direct
sunlight, near hot tables or near other heat
sources could impair their efficiency. Like
other merchandisers, these merchandisers are
sensitive to air disturbances. Air currents
passing around merchandisers will seriously
impair their operation. Do NOT allow air
conditioning, electric fans, open doors or
windows, etc. to create air currents around the
merchandiser.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
HGL Merchandisers
1-2 InstallatIon
SELF CONTAINED (LOCATION)
Product should always be maintained at proper temperature. This means that from the
time the product is received, through storage,
preparation and display, the temperature of the
product must be controlled to maximize the
life of the product.
Be sure to position self contained
merchandisers properly.
HGL-TS Location
The condensing unit is located at the top of
the HGL-TS. At least 12 inches of clearance
should be allowed at the rear of the cabinet and
at the top of the merchandiser. This clearance is
necessary to provide free air movement to and
from the condenser for maximum operating
efficiency.
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P/N 0515296_E 1-3
HGL-BS Location
At least 24 inches of clearance should be
maintained in front of HGL-BS merchandisers
and 6 inches of clearance at the rear to provide
the necessary free air movement to and from
Do NOT stand or walk on top of
merchandiser. Do not store items or
ammable materials atop the unit.
the condenser. The condensing unit is located
at the bottom of these merchandisers.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
HGL Merchandisers
1-4 InstallatIon
MODEL DESCRIPTION
Hussmann HGL-BS/TS models are self-contained,
low temperature, vertical display merchandisers.
Design features include: heated glass doors for
fog-free visibility, automatic defrost, efficient
foamed in place non-CFC insulation, cord
connection for self-contained 208-230 volt
application, and balanced refrigeration systems
for energy-saving performance.
HGL- B/T models are low temperature remote
cases. These cases do not have a condensing
unit or condensate pan.
UNLOADING
Unloading from Trailer:
Lever Bar (also known as a Mule, Johnson
Bar, J-bar, Lever Dolly, or Pry Lever)
Move the merchandiser as close as possible to
its permanent location and remove all packaging.
Check for damage before discarding packaging.
Remove all separately packed accessories such
as kits and shelves.
Improper handling may cause damage to the
merchandiser when unloading. To avoid damage:
1. Do not drag the merchandiser out of the
trailer. Use a Johnson bar (mule).
2. Use a forklift or dolly to remove the
merchandiser from the trailer.
EXTERIOR LOADING
Do NOT walk on top of merchandisers or
damage to the merchandisers and serious
personal injury could occur.
merchandisers are not structurally
designed to support external loading
such as the weight of a person. Do not place
heavy objects on the merchandiser.
SHIPPING SKID
Each merchandiser is shipped on a skid to
protect the merchandiser’s base, and to make
positioning the case easier.
Remove the top of the crate and detach walls
from each other. Lift crate from the skid.
Unscrew the case from the skid. The fixture
can now be lifted off the crate skid. Lift only at
base of skid! Remove any braces and/or skids
attached (blanket wrapped merchandiser may
have skids).
DO NOT LAY MERCHANDISER OVER
ON THE FLOOR TO REMOVE SKID.
Once the skid is removed, the merchandiser
must be lifted —NOT PUSHED— to reposition.
To remove the skid, remove screws attaching
skid to the merchandiser.
Check floor where cases are to be set to see if
it is a level area. Determine the highest part of
the floor.
Do NOT remove shipping crate until the
merchandiser is positioned
for installation.
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P/N 0515296_E 1-5
MERCHANDISER LEVELING
Be sure to position merchandisers properly.
Level the merchandiser at corners.
Merchandiser(s) must be installed level to
ensure proper operation of the refrigeration
system and to ensure proper drainage of
defrost water. The merchandiser can be leveled
by shimming under the cabinet base frame, or
by installing optional leg levelers.
The self-closing doors require the cabinet to be
properly leveled. End to end leveling will allow
the door(s) to close with uniform speed and
tightness. A slight pitch from front to rear
is desirable.
should never Be higher than the front.
the Back of merchandiser
LEG INSTALLATION (Top Mounts Only)
Install the NSF approved legs after the case is
near its final location. The legs are packaged
inside the cabinet. Replace the tape and door
blocks.
To install legs:
Raise one end of the cabinet about 8 inches.
Block the merchandiser securely, and install
two legs. The leg mounting plates are factory
installed and contain a
1
/2 x 13 in. tapped hole
to mate with the leg assembly. The procedure
is repeated on the opposite end. Three-door
merchandisers require legs in the center.
The cabinet should now be positioned at its
final location with all legs installed. The
merchandiser is leveled by turning the bottom
section of each leg. End to end leveling will
make the door(s) close with uniform speed and
tightness. A slight pitch from front to rear is
desirable.
SERIAL PLATE LOCATION
The serial plate is located in the upper lefthand corner of the merchandiser’s interior.
The serial plate contains all pertinent information such as model, serial number, amperage
rating, refrigerant type and charge. Do not
remove the serial plate under any circumstance.
Serial Plate
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
HGL Merchandisers
1-6 InstallatIon
REFRIGERATION UNIT ACCESS
Top Mounts — The top decorative panel is
removed by lifting the panel up and pulling
forward.
Bottom Mounts — The lower front panel may
be removed by removing screw at bottom and
lifting the panel straight upward and over
the tabs on which it is hanging. The panel is
installed by reversing the above procedure.
Then
Lift up and
out to remove
access panel
First
Ensure lower front panel is flat against the
floor when installed to prevent air circulation
problems for self contained merchandisers.
If the condensing unit needs to be serviced, it
can be pulled out to gain access for hard to
reach components like the condenser fans.
To pull out the condensing unit, remove the
two hold down brackets, at the unit base.
Care must be given to the drain line when
re-inserting the condensing unit back into
the case. The drain line must be inside the
defrost water evaporation pan to prevent the
discharge of water on the floor.
SEALING MERCHANDISER TO FLOOR
(Bottom Mounts Only)
If required by local sanitary codes, or if the
customer desires, merchandisers may be sealed
to the floor using a vinyl cove base trim. The
size needed will depend on how much variation there is in the floor, from one end of the
merchandiser to the other. Sealing of the lower
front and rear panels on self contained models may hamper their removal for servicing or
maintenance of the condensing unit.
NOTE: Do not allow trim to cover any intake
or discharge grilles located in the lower front
panel.
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 grille.
NOTE: Rear flue spacer must be in place as
this forms a discharge air flue at the back of
the cabinet.
SHELVES
Each cabinet is provided with four cantilever
shelves per door that are adjustable by 1 inch
increments. The shelves can also be tilted.
Each cabinet had one bottom shelf per door.
These shelves have one-inch legs to allow
proper air flow in the cabinet. Behind the
shelves are wire flues spacers, which allow for
proper air flow. All shelves and flue spacers
are white and epoxy coated for durability and
ease of cleaning.
Shelves should be adjusted to desired operating
height. Do not load product so that it touches
the evaporator coil cover. Do not extend product past the front edge of the shelf. Extending
past the edge will seriously affect internal air
flow through the cabinet. Shelves are UL rated
for a maximum load of 120 lbs.
loaD the shelves.
Do not over-
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P/N 0515296_E 1-7
Form HSCW01 Rev. 30MAY12 P/N 0525209_B
Hussmann Self-Contained Refrigerati on E quipm ent Sta rt Up Check List
***Please note that failure to follow this start-up document may void your factory warranty***
Step Startup Activity Check
1
Locate, read and maintain install/operation manual in a safe place for
future reference.
2 Examine unit. Confirm there is NO damage or concealed damage.
3 Level the unit, side to side and front to rear.
4 Remove all shipping brackets/compressor straps/bolts etc.
5
6
Unit must be run on a dedicated electrical circuit without the use of
an extension cord.
Ensure that the proper electrical requirements for the equipment are
supplied.
7 Verify field electrical connections are tight.
8
Verify all electrical wiring is secured and clear of any sharp edges or
hot lines.
9 Verify the condensate drain line is properly trapped and pitched.
10 Verify all required clearances on the sides and back of unit.
11
Advise owner/operator that merchandiser must operate at temperature for 24 hrs prior to loading
LEGAL DISCLAIMER:
Hussmann shall not be liable for any repair or replacements made without the written consent of Hussmann, or w hen the productis installed or operated in a manner
contrary to the printed instructions covering installation and service which accompanied such product.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Verify there are no air disturbances external to the unit. Heat and air
registers, fans, and doors etc.
with product.
HGL Glass Door Merchandisers
1-8 InstallatIon
NOTES:
P/N 0515296_E U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
P/N 0515296_E 2-1
ELECTRICAL / REFRIGERATION
MERCHANDISER ELECTRICAL DATA
Refer to Appendix A of this manual or the
merchandiser’s serial plate for electrical
information.
FIELD WIRING
Field wiring must be sized for component
amperes stamped on the serial plate. Actual
ampere draw may be less than specified.
ALWAYS CHECK THE SERIAL PLATE FOR
COMPONENT AMPERES
ELECTRICAL CONNECTIONS
All wiring must be in compliance with NEC
and local codes. All electrical connections (for
remote models) are to be made in the electrical
Handy Box located behind the removable base
panel at the left end of the merchandiser when
facing the discharge air louver.
Before any service is performed on this piece
of equipment, make sure the power supply to
the merchandiser is disconnected.
ELECTRICAL OUTLET:
Before the merchandiser is connected to any
wall circuit, use a voltmeter to check that the
outlet is at 100% of the rated voltage. The wall
circuit must be dedicated for the merchandiser. Failure to do so voids the warranty. Do
not use an extension cord. Never plug in more
than one merchandiser per electrical circuit.
• Always use a dedicated circuit with the
amperage stated on the unit.
• Plug into an outlet designed for the plug.
• Do not overload the circuit
• Do not use long or thin extension cords.
Never use adapters.
• If in doubt, call an electrician.
ELECTRICAL ENCLOSURE
Remove the access panel and electrical box
cover to access the electrical enclosure. The
cabinet supply breakers should be disconnected before removing the enclosure cover.
POWER SWITCHES
The power switch is located at the electrical
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 merchandiser.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Risk of Electric Shock. If cord or plug
becomes damaged, replace only with
a cord and plug of the same type.
— LOCK OUT / TAG OUT —
To avoid serious injury or death from electrical shock, always disconnect the electrical
power at the main disconnect when servicing
or replacing any electrical component. This
includes, but is not limited to, such items as
doors, lights, fans, heaters, and thermostats.
HGL Merchandisers
2-2 ElEctrical / rEfrigEration
Self-contained
models have
factory-installed
power cords
attached at the
electrical box.
Merchandiser must be grounded.
Do not remove the power supply cord ground.
REFRIGERATION
(Self Contained Models)
LINE SIZING
(Remote Models)
Refrigerant line connections are made at the
left end of merchandiser (facing front) beneath
the refrigerated display area. The refrigerant
line connection size is
5
is
/8 in. Refrigerant lines should be sized as
3
/8 in. The suction line
shown on the refrigeration legend that is
furnished for the store or according to
ASHRAE guidelines.
Refrigeration lines are under pressure.
Refrigerant must be recovered before
attempting any connection or repair.
Each self contained model is equipped with
its own condensing unit. The correct type of
refrigerant will be stamped on each merchandiser’s
serial plate. The merchandiser refrigeration piping
is leak tested. The unit is charged with refrigerant,
and shipped from the factory with all service
valves open.
REFRIGERATION
(Remote Models)
Refrigeration temperature is controlled by an
electronic factory-installed thermostat. The
electronic thermostat controls a liquid line
solenoid valve (not provided with the merchandiser).
The thermostat energizes the valve as the temperature rises. A pump down system is recommended for outdoor condensing units.
For refrigerators with other than Koolgas
defrost, the suction and liquid line should be
clamped and/or taped together and insulated
for a minimum of 30 feet from the refrigerator.
KOOLGAS
(Remote Models)
If Koolgas defrost is used, the liquid line will
need to be increased two sizes larger inside the
merchandiser area. This is necessary to ensure
even liquid drainage from all evaporators
during defrost.
Refrigerators with Koolgas defrost
not have their liquid lines and suction lines in
should
contact with each other but are to be separately insulated for a minimum of 30 ft from the
refrigerator. Additional information for the
balance of the refrigerant lines is recommended
and required wherever condensation and dripping
would be objectionable.
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P/N 0515296_E 2-3
CONDENSATE PAN
Oil Traps
P-traps (oil traps) must be installed at the base
of all suction line vertical risers.
Pressure Drop
Keep refrigerant line runs as short as possible
to avoid large pressure drops. Use a minimum
number of elbows. Where elbows are required,
use long radius elbows only.
COMPRESSOR
(Self Contained)
The HGL compressor is mounted on vibration
springs. The compressor is banded down during
shipment. This band MUST be cut and removed
to allow the compressor to float freely once
placed into operation. Failure to cut compressor
shipment band may result in excessive noise or
system damage.
An electrically heated (300W, 208-230V)
condensate pan evaporates defrost water. The
heated condensate pan slides onto the slide
plate on the cabinet bottom on both the TS
and BS merchandisers.
The pan is removable for cleaning. A vinyl
drain tube is provided for connection to the
heated condensate pan. The drain must be
trapped to guard against drain line freezing
and as a good sanitation practice.
Product will be degraded and may spoil if
allowed to sit in a non-refrigerated area.
Compressor Band
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
HGL Merchandisers
2-4 ElEctrical / rEfrigEration
NOTES:
P/N 0515296_E U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
P/N 0515296_E 3-1
START UP / OPERATION
The front of the controller has an adjustment
knob and status LEDs. The back of the
IN STA LLER
controller has connections for sensors and
switched equipment.
It is the contractor’s responsibility to
install merchandiser(s) in accordance with
all local building and health codes.
Safe-NET III™
TEMPERATURE AND DEFROST
CONTROLLER
SAFE-NET III™ USER INSTRUCTIONS
Your refrigerated case uses a Hussmann
Safe-NET™ III temperature and defrost
controller to precisely maintain the temperature and prevent frost buildup on the cooling
coil. LEDs indicate when the compressor or
refrigeration is on, when the case is in a defrost
cycle, if the temperature is outside the desired
range, or if there is a sensor failure.
The Safe-NET III controller includes the
following features and connections.
• Adjustment knob:
Adjusts the temperature setpoint.
Turn adjustment knob to OFF to turn off
refrigeration system. Unplug merchandiser
from power before servicing the unit.
An adjustment knob allows the temperature
to be set within the configured range and can
power off the controller and compressor. Your
controller has been custom-configured to provide the best temperature and defrost control
for your chilled or frozen food.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
• Controller LEDs:
Compressor Powered On LED (green):
Lights while the compressor is running or
the refrigeration valve is open.
Defrost Cycle LED (yellow):
Lights while the refrigeration coil is
defrosting.
Temperature or Sensor Alarm (red):
Lights if the temperature is too warm or
too cold. Flashes if a sensor fails.
HGL Merchandisers
3-2 Start up / OperatiOn
START-UP / OPERATION
• Rear connections:
– Case temperature sensor:
• Typically senses the temperature
of the air in the case.
Used by the controller to determine when
to power on or power off the compressor
or refrigeration.
– Evaporator temperature sensor:
• Senses the temperature of the
refrigeration coil.
Terminates a defrost cycle when
refrigeration coil ice melts.
– Compressor or refrigeration relay:
• Switches on the compressor or
refrigeration valve for cooling.
The optional evaporator fan remains
ON when the adjustment knob is in the
Off position.
Before applying power to the merchandiser,
remove the front grille.
Locate the compressor (for self contained
models),
compressor in place. This band is only needed
cut the band holding the
for shipment, and must be cut prior to
operation.
Check thermostat knob is at the appropriate
position. See temperature adjustment on
Page 3-6.
Check the check the merchandiser’s cabinet
thoroughly for loose nuts and bolts. Check all
electrical connections. Inspect the refrigerant
lines for any visible damage or chafing.
Replace the front grille.
The following list of housekeeping practices
will assure trouble-free operation:
DISPLAY
The display includes three red LEDs and two
digits for temperature, defrost status, and error
codes.
The three display LEDs are red, and their
behavior matches the LEDs on the controller.
• 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 gaskets are sealed.
• Make sure all evaporator fan motors are
running. These can be seen through grille
inside of cabinet.
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P/N 0515296_E 3-3
START-UP / OPERATION
1. Plug in the merchandiser.
The OFF Position does not disconnect line
voltage to the case, refrigeration unit, fan,
or heater.
NOTE: The 65°C Version Controller includes
a Parameter Code Number. This number indicates what program has been loaded into the
controller. When the Controller is first powered up, or is turned off and then back on, a
2-digit parameter code number will display for
Product will be degraded and may spoil if
allowed to sit in a non-refrigerated area.
3 seconds. Then the Self Check will Start.
The Safe-NET parameter code is 63.
2. Wait for the self check to complete. During
the self check, each LED flashes for one
second, then all LEDs turn on for two
seconds. If the LEDs do not flash, make
sure the adjustment knob is not in the Off
position.
• After the self check, all LEDs turn off
until the compressor starts. There may be
a delay before the compressor starts. If the
red Temperature or Sensor Alarm LED
stays on after the self check.
• The green Compressor Powered On LED
turns on when the compressor starts.
NOTE: Do NOT load product until AFTER
merchandiser operates for 24 hours and reaches desired operating temperature.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
HGL Merchandisers
3-4 Start up / OperatiOn
1. Apply power to the merchandiser. Wait for
the self check to complete. During the self
check a 2 digit number will appear for 3 seconds. Then each LED flashed for one second and then all LED’s turn on for two seconds. If the LED’s do not flash, make sure
the adjustment knob is not in the “OFF”
position.
1A. The merchandiser temperature displays at
startup. The initial defrost starts two hours
later. The display will show the temperature at
the start of defrost. This reading will remain
displayed during defrost and until it times out,
even though the refrigeration mode has been
initiated. (The green LED will be lit.)
P/N 0515296_E U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
2. The compressor will start after a delay; 30
seconds after the power is applied.
3. The compressor will continue to run until it
reaches its cut-out temperature (Pulldown).
4. The refrigeration cycle will continue for the next
subsequent scheduled 12-hours or demand
defrost.
5. The above process will repeat (steps 3 and 4)
until the power is interrupted.
6. If power stops, the process will start over at
Step 1, and the time to subsequent defrost will
reset.
P/N 0515296_E 3-5
ALARMS AND CODES
Flashing temperature or sensor alarm
led, e1 or e2
If the Temperature or Sensor Alarm LED
(red) on the controller and display is flashing,
a temperature sensor has failed. The display
shows E1 if the case sensor has failed or E2 if
the evaporator sensor has failed.
If the merchandiser sensor fails, refrigeration
will run continuously. Turn off, or repeat a
duty cycle of a few minutes on and a few
minutes off.
DEFROST TERMINATION SWITCH
Merchandisers may use a defrost termination
switch, instead of an evaporator sensor to
terminate a defrost cycle. The defrost
termination switch is temperature activated
and senses the completion of defrost.
MANUAL DEFROST
Note:
This procedure initiates
a manual or forced
defrost.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
IMPORTANT: Return the control knob to
its original setting (Step1) once the manual
defrost has been initiated.
HGL Merchandisers
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