Hussmann Chino MPC-ET Series Original operating instructions

DOE 2012
Energy Eciency
Compliant
Hussmann refrigerated merchandisers congured for sale f
or use in the United States
meet or surpass the requirements of the DOE 2012 energy eciency standards.
/CHINO
MPC-ET MOBILE PRODUCE CASE SELF-CONTAINED
REV. 1018
Installation
& Operation
Manual
MOBILE PRODUCE CASE
SELF-CONTAINED
INSTALLATION & OPERATION GUIDE

2
Table of Contents
General Information 3
Case Section 4
Installation 5
Case Refrigeration 6
Safenet III Programmed Parameters 7
Spec Sheet 8
Electrical/Wiring Diagram Index 9
Wiring Diagram 10
Safenet III Operation 11
Service 17
Maintenance 19
Warranty 20

3
General Information
Descripon: Mobile Produce Case model series are Mul-deck, spot merchandisers designed for non-crical
temperature applicaons such as: Non Hazardous Produce. They are available as self-contained models. Each
self-contained model will have it’s own condensing unit, factory installed beneath the display area of the case
ready for operaon when electrical service is connected.
Shipping Damage: All equipment should be thoroughly examined for shipping damage before and during
unloading. This equipment has been carefully inspected at our factory and the carrier has assumed
responsibility for safe arrival. If damaged, either apparent or concealed, claim must be made to the carrier.
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. The carrier will supply necessary
claim forms.
Concealed Loss or Damage: When loss or damage is not apparent unl aer all equipment is uncrated, a claim
for concealed damage is made. Make request in wring to carrier for inspecon within 15 days, and retain all
packaging. The carrier will supply inspecon report and required claim forms.
Locaon/Store Condions: The refrigerated merchandisers have been designed for use only in air condioned
stores where temperature and humidity are maintained either 75°F ambient and 55% RH . DO NOT allow
air condioning, electric fans, ovens, open doors or windows (etc.) to create air currents around the
merchandiser, as this will impair its correct operaon.
Shortages: Check your shipment for any possible shortages of material. If a shortage should exist and is found
to be the responsibility of Hussmann Chino, nofy Hussmann Chino. If such a shortage involves the carrier,
nofy the carrier immediately, and request an inspecon. Hussmann Chino will acknowledge shortages within
ten days from receipt of equipment.
Hussmann Chino Product Control: The serial number and shipping date of all equipment has been recorded
in Hussmann’s les 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, in order to provide the
customer with the correct parts.
This equipment is to be installed
to comply with the applicable
NEC, Federal, State , and Local
Plumbing and Construction
Code having jurisdiction.
AT TENTION
INSTALLER
/CHINO
A publication of HUSSMANN®Chino
13770 Ramona Avenue • Chino, California 91710
[phone] FAX
[phone]
[phone]
Keep this booklet with the case at all times for future reference.
Case Descripon:
This Booklet specically covers the
Following models:
Mobile Produce MPC-ET-8-S

4
Case Sections
531/4
(1353)
273/8
(1353)
105/8
(270)
61 (1549)
40 (1016)
12
(305)
10
(254)
493/4 (1264)
Adjustable Product Depth
MPC-ET
10
(254)
Elec
Drain
Refrig
5
(127) 11
(280)
End
Panels
11/8
(29)
C
L
411/2
(1054)
451/2
(1156)
451/2
(1156)
61
(1549)
48
(1219) 96 (2438)
ETP
Note: Stub up locations may vary.
Please refer to the Cadblock at Hussmann.com

5
Never stand on the Mobile Produce Case deck for
any reason. These surfaces are not steps and are not
designed to support such loads.
Doing so will result in:
•Damage to case
•Serious injury to user
Moving Mobile Produce Case
Refer to illustraon below, all casters must be switched to
the unlocked posion before transporng the merchan-
diser. Ensure to check all six caster located at the corners
and center of the front and rear at the perimeter of the
merchandiser are unlocked to properly transport.
Installation
Locaon
The Mobile Produce Case display has been designed for
use only in air condioned stores where temperature and
humidity are maintained either 75°F ambient and 55% RH.
When selecng the locaon for placement of this
case, avoid the following condions:
Excessive air movement
• Doors
• Air-condioned vents
• Other air sources
Excessive heat
• Windows
• Sun
• Flood lamps 8 feet or less from the product
• Other heat sources
Skid Removal
Unstrap case from skid and roll case o to move near plac-
ing locaon
Note:
Cases are manufactured and shipped to stores with
casters installed on the base frame to make the job of
moving cases easier for everyone involved with the
manufacturing, shipping and installaon process.
Casters not only speed up the process, but they also
reduce the chance of damage from raising and lowering
cases with ”J” bars to place them on dollies, skates or roll-
ers. In most situaons, one or two persons can move the
case with ease.
A
UNLOCK BUTTERFLY TAB ON CASTER

6
Case Refrigeration
Operaon
Each self-contained model is equipped with its own condensing unit located beneath the display area. The unit will be
charged per nameplate refrigerant and shipped from the factory with all service valves open, completely ready for opera-
on when electrical power has been connected.
The self-contained refrigeraon system which is thermostacally regulated. The thermostat in the case is set to a certain
cut out point in which the case will refrigerate unl that cut out point is reached and will cease to refrigerate the case by
the thermostat.
Controls and Adjustments
Refrigeraon Controls Defrost Controls
Model Product
Applicaon
Discharge Air
Temperature
Defrost
Frequency
Cycle
Type of
Defrost
Terminaon
Temperature
Fail-safe Time
(Minutes)
Mobile
Produce
Non-Crical
Temp
27°F 30 minutes
every 6 hours
O Time 48°F Evap
Temp
40
1. The Safe-NET III Controller controls refrigeraon temperature. This is factory installed in the control panel. Adjust
this control knob to maintain the discharge air temperature shown. Measure discharge air temperatures at the center
of the honeycomb. The defrost seng is factory set as shown above.
Condensate Pan Setup
Setup:
There is one condensate evaporator pan on this unit. The drain pipe from the case feeds into the condensate pan, once
water levels are high enough in the condensate pan the oat switch level is triggered which will then trigger the heater to
raise temperature therefore evaporating the water into the case airstream.
EVAP PAN

7
Parameter Programmed Report
Parameter Description Value Min Max
1 Freezer Cut-in warm 32°F -40ºC (-40ºF) 40ºC (104ºF)
2 Freezer Cut-out warm 28°F -40ºC (-40ºF) 40ºC (104ºF)
3 Freezer Cut-in cold 22°F -40ºC (-40ºF) 40ºC (104ºF)
4 Freezer Cut-out cold 18°F -40ºC (-40ºF) 40ºC (104ºF)
5 Compressor ON time delay at Controller Power Up 0 min 0 sec 0 sec 59 min 59 sec
6 Compressor Minimum (ON) time 4 min 0 sec 0 sec 30 min 59 sec
7 Compressor Minimum (OFF) time 0 min 30 sec 0 sec 59 min 59 sec
8 Potentiometer off position 10º 5º 57º
9 Potentiometer on position 15º 9º 61º
10 On-Off logical function 1
11 Controller Operation Temperature Units 1
12
Sensor failure mode
(compressor and fan relay
failure mode)
3
13 Compressor On Time if Sensor failed 0 hour 6 min 1 min 59 hour 59 min
14 Compressor Off Time if Sensor failed 0 hour 2 min 1 min 59 hour 59 min
15 Defrost Function 1
16 Defrost Method 2
17 Time to first defrost(Initial frost build time) 2 hour 0 min 10 min 71 hour 59 min
18 Time to subsequent defrost 4 hour 0 min 10 min 71 hour 59 min
19 Defrost duration Time (failsafe) 0 hour 30 min 1 min 4 hour 59 min
20 Defrost Termination temperature 50°F -40ºC (-40ºF) 40ºC (104ºF)
21 Drip time 0 min 0 sec 0 sec 59 min 59 sec
22 Defrost Cycle at power on 0
23 Evaporator Temp. Sensor 1
24 Defrost Termination Method 2
25 Temperature Initiated Defrost Function 1
26 Temperature Initiated Defrost (T = Tspace-Tevap.) 4°F 0ºC (0ºF) 40ºC (72ºF)
27 Temperature Initiated Defrost Time Delay 3 min 0 sec 0 sec 59 min 59 sec
28
Temperature Initiated Defrost Time Delay
After Defrost
30 min 0 sec 0 sec 59 min 59 sec
29 Temperature Alarm Enable 1
30 High Temperature Alarm - Warm 42°F -40ºC (-40ºF) 40ºC (104ºF)
31 Low Temperature Alarm - Warm 24°F -40ºC (-40ºF) 40ºC (104ºF)
32 High Temperature Alarm - Cold 34°F -40ºC (-40ºF) 40ºC (104ºF)
33 Low Temperature Alarm - Cold 16°F -40ºC (-40ºF) 40ºC (104ºF)
34 Temperature Alarm Differential 4°F 1ºC (2ºF) 10ºC (18ºF)
35 Temperature Alarm Time delay 0 hour 30 min 0 min 4 hour 59 min
36 Temperature Alarm Disable Time after Start Up 2 hour 0 min 0 min 17 hour 59 min
37 Temperature Alarm Delay after Defrost 1 hour 0 min 0 min 17 hour 59 min
38 Buzzer Function 1
39 Buzzer Period 24.9 sec 0.2 sec 24.9 sec
40 Led Alarm Function 1
41 Led Alarm Period 2.0 sec 0.4 sec 24.8 sec
42
Defrost Display Lock
(display indication during defrost)
1
43 Sensor Fault Monitoring Time 1 min 0 sec 5 sec 59 min 59 sec
44 Display Temperature Offset 0°F -40ºC (-72ºF) 40ºC (72ºF)
45 Display Unlock Time 0 hour 10 min 0 min 1 hour 59 min
46 Show Parameter Code Number 1
47 Parameter Code Number 6 0 99
48 Maximum Compressor Run Function 0
49 Maximum Compressor Run Time 2 hour 0 min 0 min 17 hour 59 min
50 Defrost Heater Duty Cycle Function 0
51 Heater On Time 1 min 0 sec 5 sec 59 min 59 sec
52 Heater Off Time 0 min 30 sec 0 sec 59 min 59 sec
0=display temperature read
1=lock the display on temp.
2=display DF
0=disable or 1=enable
0=disable or 1=enable
0=disable or 1=enable
0=disable or 1=enable
0=disable
1=Evap. Sensor
2=Control Sensor
3=Digital Switch (close)
0=disable or 1=enable
0=disable or 1=enable
0=disable or 1=enable
0=disable or 1=enable
0=disable or 1=enable
0=Celsius or 1=Fahrenheit
0=Relays fail OPEN
2=Relays fail CLOSE
3=Duty cycle
0=disable
1=System run time
2=Compressor run time
1=Electric
2=Off-cycle
3=reverse cycle
0=disable or 1=enable
8/20/2015 MPC-ET-8S_Report.xls
Safenet III Programmed Parameters

8
Spec Sheet
SELF-SERVICE PRODUCE
HUSSMANN - MPC-ET REMOTE/SELF-CONTAINED
REFRIGERATION DATA: END PANEL WIDTH KEY
VELOCITY
PAR CONV PAR CONV PAR CONV
(FT / MIN) GPM PSI 11.13
4'
SS PRODUCE 4,400 5,060 18 18 27 27 250~300 TBD TBD TBD 2 1.13
8' SS PRODUCE
8,800 10,120 18 18 27 27 250~300 8.00 TBD TBD
PAR-
CONV-
N/A -
*2º F less than evaporator for pressure loss in refrigerant lines TBD -
A/S-
REFRIGERATION DATA CONTINUED:
EE-
USAGE
CUT IN
(ºF)
CUT OUT
(ºF)
R22
(PSIG)
R404A
(PSIG)
R407A
(PSIG)
*** REFRIGERATION NOTES:
TEMP.
CONTROL
22 18 45 59 46 1) BTU'S ARE FOR NO CANOPY OR SHELF LIGHTS
2) ADD 10 BTU'S PER FOOT/PER SHELF FOR OPTIONAL LED SHELF LIGHTS
ELECTRICAL DATA:
ENERGY EFF. FANS (120 / 1 Volt / Phase) LIGHTING: LED WITH ELECTRONIC DRIVER 120V INPUT VOLTAGE
# EVAP.
FANS **
# A/S
FANS
AMPS WATTS AMPS WATTS # SHLVS AMPS WATTS AMPS WATTS AMPS WATTS
4'
2 0 0.24 8.00 0.80 8.80 N/A N/A N/A 0.80 8.80 0.36 40.00
8'
4 0 0.48 16.00 0.16 17.60 N/A N/A N/A 0.16 17.60 0.72 80.00
ELECTRICAL DATA CONTINUED: DEFROST DATA:
115 / 1
AMPS HP AMPS AMPS WATTS
EVAP PAN
RUN TIME
# OUTLETS VOLTS AMPS MIN COIL ONLY MIN PER DAY AMPS WATTS
4' N / A
N /A 6.80 6.25 1,500 TBD N/A N/A N/A 4' OFF TIME 30 48 N/A 6N/A N/A
8' N / A
1.75 12.60 6.25 1,500 TBD N/A N/A N/A 8' OFF TIME 30 48 N/A 6N/A N/A
OPTIONS/NOTES:
1. NO GFCI RECEPTACLE OPTION
2. SPECIAL FRONT BODYW ORK ACCORDING TO STORE
3. PLUG TYPE IS BASED ON STANDARD FEATURES
TBD
DEFROST
DRIP
TIME
TERM.
TEMP (ºF)
DEFROST
TIME
DRAIN EVAP PAN
240V / 1 PHASE
CONVENIENCE OUTLETS
(Optional)
ELECTRICAL DEFROST
208V / 1 PHASE DEFROST WATER
LB /DAY
TBD
240 / 1
CONDENSING UNIT
VOLTS / PHASE
EPR SETTINGS
20
TEMPERATURE (ºF)
EVAPORATOR
PAR
CASE
USAGE
.23 AMPS
EA
ELEC. THERMOSTAT / AIR SENSOR
SETTINGS (COLD ONLY)
TOTAL FANS
CASE LENGTH
*** CAPACITY
(BTU / HR / TOTAL)
20
CASE LENGTH
20
20
UNIT SIZING*
CASE LENGTH
.12 AMPS
EA. EE
CANOPY (OPTIONAL)
LIGHTS LED
CONVENTIONAL (SELF-CONT)
TOTAL LIGHTS
LED
(OPTIONAL)
SHELF LIGHTS LED
(OPTIONAL)
ANTI-SWEAT
HEATER PLUG TYPE❶
EST.
REFG.
CHRG.
(LBS)
GLYCOL
REQUIREMENTS
# OF END
PANELS
NOT AVAILABLE
TO BE DETERMINED
AIRSWEEP
ENG EFFICIENT FAN
LEGEND
PARALLEL (REMOTE)
2.25
1.13
CONV
DEFROST
TYPE
DISCHARGE AIR
L14-30P
CASE
LENGTH
L6-20P
TOTAL ADDED
LENGTH (IN.)
END PANEL
WIDTH (IN.)
SECTION
PLAN
MPC-ET
MPC-ET
❶
MPC-ET REM-SC 081915.xls Page 1

9
Wiring Diagram Index
Model Descripon Size Diagram #
Mobile Produce MPC-ET-8-S 8’ 2H14057
Electrical
Wiring Color Code
CASE MUST BE GROUNDED
NOTE: Refer to label afxed to case to determine the actual
conguration as checked in the “TYPE INSTALLED”
boxes.
Field Wiring and Serial Plate
Amperage
Field Wiring must be sized for component amperes
printed on the serial plate. Actual ampere draw may be
less than specied. Field wiring from the refrigeration
control panel to the merchandisers is required for
refrigeration thermostats. Case amperes are listed on
the wiring diagram, but always check the serial plate.
BEFORE SERVICING
ALWAYS DISCONNECT ELECTRICAL
POWER AT THE MAIN DISCONNECT
WHEN SERVICING OR REPLACING ANY
ELECTRICAL COMPONENT.
This includes (but not limited to) Fans, Heaters
Thermostats, and Lights
DANGER
.

10
Wiring Diagram
HUSSMANN_GDF_1.1 SHEET SIZE D
MATERIAL - N/A
THIRD
ANGLE
PROJECTION
UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES.
DRAWN BY -CRAIG BOOREY
APPROVED BY - CRAIG BOOREY
TOLERANCES ARE:
DECIMALS .XX
u
.03, .XXX
u
.010
ANGLES
u
2
v
DATE DRAWN - 5-22-15 ECN# - 985815
REVIEWED BY -CRAIG BOOREY REF -
2H14057
DIAGRAM-MPC-ET-8- S PRELIMINARY
REV ECN DATE REVISION DESCRIPTION REV BY CHKD BY APPR BY
A985815 2015/05/22 RELEASED TO PRODUCTION CB CB CB
REVISION HISTORY
NOTES: CASE MUST BE GROUNDED A
SHEET 1 OF 1
CIRCUIT #1
L1 L2
LOADING
17.4 16.3
208V 240V
M M
BLACK # 14
WHT # 14
EVAPORATOR PAN 1500W 6.25A @ ~ 240 VAC 1H95137550
BLACK # 14
RED # 14
~208/240 VAC - 60 Hz.
BLACK # 10
RED # 10
GREEN #10
BLACK # 14
RED # 14
M
M
EVAP FAN MOTOR (4) 0477653 4W .12A @ 120VAC
CIRCUIT # 1
BUNDLE BROWN
BUNDLE PURPLE
L1 L2 N G
OPTIONAL POWER CORD-10' 30 AMP 240V 1H82233550
BLACK # 14
RED # 14
BUNDLE BLUE
POWER SWITCH 125-01-0271
L2
L1 CONDENSING UNIT
RLA=12.6A LRA=55.0A MCC=17.2A
COPELAND R-404A FFAP-0172-CFV-072 1H96225
L2
L1
SAFE NET III CONTROLER PART# 1H59048001
SAFE NET III SENSORS PART# 0510533 (4m long) black pb1 AIR PART# 0510532 (4m long) Yellow pb2
COIL
RELAY TYCO T92P722A-277 1804241
L1 L2
M
CONDENSER FAN
SAFETY SWITCH
FLOAT SWITCH
WHT # 14
HTR ELMT 80W 0.72A @ 120V 125-01-0767
BLK # 14
WHT # 14
BUNDLE BROWN
20.1 18.9

11
Safenet III Operation
It is the contractor’s responsibility to install
case(s) according to local construction and
health codes.
ATTENTION
INSTALLER
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.
An adjustment knob allows the temperature to be set
within the congured range and can power off the
controller and compressor. Your controller has been
custom-congured to provide the best temperature and
defrost control for your chilled or frozen food.
The front of the controller has an adjustment knob and
status LEDs. The back of the controller has connections
for sensors and switched equipment.
The Safe-NET III controller includes the following
features and connections.
• Adjustment knob:
Adjusts the temperature set point.
Turn adjustment knob to OFF to turn o refrigeration
system. Unplug merchandiser from power before
servicing the unit.
• 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.

12
Safenet III 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 o the compressor or refrigera-
tion.
-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.
WARNING
!
The optional evaporator fan remains ON
when the adjustment knob is in the OFF
position.
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.
START-UP
1. Plug in the merchandiser.
WARNING
!
The OFF Position does not disconnect line
voltage to the case, refrigeration unit, fan,
or heater.
2. Wait for the self check to complete. During the self
check, each LED ashes for one second, then all
LEDs turn on for two seconds. If the LEDs do not
ash, make sure the adjustment knob is not in the
O position.
• After the self check, all LEDs turn o until the
compressor starts.There may be a delay before the
compressor starts. If the redTemperature or Sen-
sor 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.
WARNING
!
Product will be degraded and may spoil if
allowed to sit in a non-refrigerated area.

13
Safenet III Operation
SEQUENCE OF OPERATION
DDSS-4MC / DDSS-4
Compressor
starts
Maximum Defrost
Time 40 Minutes
(Fallsafe)
Maximum Defrost
Time 40 Minutes
(Fallsafe)
Defrost Cycle
Terminates at
45° F.
Initial Defrost
Two hours After Start Up
Pulldown
After Defrost
Compressor ON
Pull down
Compressor On
Compressor
Starts
Refrigeration Cycle
Compressor
Off Cycle
GREEN (REFRIGERATION) GREEN (REFRIGERATION)
YELLOW (DEFROST)
RED (ALARM)
WARM COLD
YELLOW (DEFROST)
RED (ALARM)
“OFF” POSITION
Safe-Net III Controller
DISPLAY
Start Up
OFF
ON
1
Compressor runs
continuously until it
reaches its cut-out setting.
Time to Subsequent Defrost
(6-Hours or Demand Defrost) Time to Subsequent Defrost
(6-Hours or Demand Defrost)
Defrost cycle is temperature
terminated. Defrost initiates
two hours after start up.
When powered up there will
be a delay of 30 sec. at start
up before the compressor starts.
3
45
1A
2
1. Apply power to the merchandiser.Wait for the self
check to complete. During the self check, each LED
ashes for one second and then all LEDs turn on for
two seconds If the LEDs do not ash, 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 refrigera-
tion mode has been initiated. (The green LED will
be lit.)
2. The compressor will start after a 30 second delay
once 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 (5-hours) or demand de-
frost.
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.

14
Safenet III Operation
TEMPERATURE ADJUSTMENT
Rotate the adjustment knob counter clockwise for a
warmer set point or clockwise for a colder set point.
• While the temperature is being adjusted, the op-
tional display shows the set point (cut out value). A
few seconds after the temperature is set, the display
reverts to showing the sensed temperature in the
merchandiser.
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 ashing, 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.
Compressor
Off Time If
Sensor Failed
Compressor
Status
Compressor
On Time If
Sensor Failed
Off
Off
Time
On OffOn
MANUAL DEFROST
Note location of
knob setting
Warm Cold
Warm Cold
Warm Cold
1.
Rotate knob fully
counterclockwise
until it stops (full
warm- “OFF” position)
2.
After 10 seconds, but
before 20 seconds,
rotate knob fully
clockwise until it
stops (full cold position)
3.
Note:
This procedure initiates
a manual or forced
defrost
IMPORTANT: Return the control knob to its original
setting (Step 1) once the manual defrost has been
initiated.

15
Safenet III Operation
TEMPERATURE ADJUSTMENT
1. Rotate the adjustment knob counter clockwise
for a warmer set point or clockwise for a colder set
point.
2. While adjusting the temperature, the display
shows the set point (cut out value). A few seconds
after the temperature is set, the controller reverts
to the sensed temperature in the merchandiser.
3. To verify merchandiser settings, turn the dial to
warm and cold as shown above. Output readings
should be within one degree of the temperatures
shown above.

16
Safenet III Operation

17
Service
WARNING !
DISCONNECT THE ELECTRICAL POWER WHEN SERVICING OR REPLACING ANY ELEC-
TRICAL COMPONENT.
Produce and Deck Pan Assembly
Gain access to Coil fan assembly
Li boom case deck pan using illustrated nger/ac-
cess hole to gain access to coil and fan assembly .
DECK PAN FINGER HOLE
To access compressor area
Remove all screws around the perimeter of the ac-
cess panel behind the case to expose compressor
unit and condensate pan through open secon of the
rear wall.
Preventative Maintenance
(Tobe performed by trained service personnel)
Warning!Tu rnO case before performing Preventive
Maintenance!
CondenserCoil:
a.Remove rear panel.
b.Using vacuum, vacuum and brush to dislodge and
removedust on and in coil. Caution! Coil ns are sharp.
Handlewith care! Do not bend ns!
c.Replace rear panel
Preventative Maintenance
Label (see pg. 22)
T-STAT LOCATION
Thermostat Sensor Access
Removing the rear interior wall will allow for acces to
the Thermostat Sensor placed above the Coil against
the rear wall.
FOR PROMPT SERVICE
When contacting the factory regarding problems,
be sure to have the Case Model and Serial
Number handy. This information is on a plate
located on the case itself.

18
CASE CONTROLLER
CASE SWITCH
Condensor and Safene III Access Panel
Removing the front panel will allow access to the fol-
low components:
A. Thermostat Display
B. Safenet III Control
C. Case switch
Service
Tips and Troubleshoong
Before calling for service:
• Check power. Ensure reliable electrical power supply
to the equipment
• Check shelf loading. Overstocking will adversely af-
fect case performance.
• If frost is collecting on xture or product, verify that
store Humidity Control is working properly, and that
no outside doors/windows allow moisture into store.
INTAKE
EXHA
UST
LABEL
(see pg. 22)
Intake and Exhaust Vents
Be sure to keep vents clear and free of buildup. DO NOT BLOCK case Boom or Top panel vents (supplies
crical intake airow to compressor.)

19
Maintenance
Case Cleaning
To insure long life, proper sanitaon and minimum maintenance
costs, the refrigerator should be thoroughly cleaned frequently.
SHUT OFF FAN BEFORE CLEANING: It can be unplugged within
the case, or shut o enre case at the source. The interior
boom may be wiped with any domesc soap or detergent
based cleaners. Sanizing soluons will not harm the interior
boom,
WARNING! DO NOT USE WATER HOSES! A self contained case
empes into an evaporator pan that WILL OVERFLOW IF TOO
MUCH WATER IS INTRODUCED during cleaning
• USE WATER AND A MILD DETERGENT FOR THE EXTERIOR
ONLY
• Wipe interior with damp non abrasive cloth. Soap and
hot water are not enough to kill bacteria; a sanizing
soluon must be included with each cleaning process to
eliminate bacteria.
• Clean any visible debris surrounding or on top of the
drain locaon. The drain is located under the deck pans.
• DO NOT USE A CHLORINATED CLEANER ON ANY SUR-
FACE.
• DO NOT USE ABRASIVES OR STEEL WOOL SCOURING
PADS (these will mar the nish)
• DO NOT USE A CLEANING OR SANITIZING SOLUTION
THAT HAS AN OIL BASE (these will dissolve the butyl
sealants) or an AMMONIA BASE (this will corrode the
copper components of the case)
Service
• Ensure front and rear intake panel vents remain clear
and clean of any debris to ensure opmal case perform-
ance.
• To maintain good refrigeraon performance, a refrigera-
on service person should be called periodically (at least
twice a year) to clean the discharge honeycomb and re-
move any accumulated dirt from the condenser coil and
condensate evaporator pan on self-contained models.
POOR CIRCULATION OF AIR THROUGH THE CONDENSER
COIL WILL RESULT IN POOR REFRIGERATION PERFORM-
ANCE.
• Dirt accumulaon inside the condensate evaporator pan
will reduce the pan’s capacity and aect the eciency of
the heater causing a burned out heater and an overow
of defrost water onto the store oor.
Tips and Troubleshoong
Before calling for service:
• Check power. Ensure reliable electrical power supply to
the equipment
• Check shelf loading. Overstocking will adversely aect
case performance.
• If frost is collecng on xture or product, verify that
store Humidity Control is working properly, and that no
outside doors/windows allow moisture into store.

20
Warranty
Hussmann Specialty Products Service Department
IMPORTANT!
FPR PROMPT SERVICE WHEN CONTACTING HUSSMANN CORPORATION BE SURE TO HAVE CASE
MODEL AND SERIAL NUMBER IN HAND
For any warranty or service issues not covered by this manual, for tech support, or for warranty ser-
vice calls, please contact the Hussmann Specialty Products Service Department
If you have any questions concerning information on these instructions please contact:
Hussmann Technical Support..........................................866-785-8499
Hussmann Service Call Center.........................................800-922-1919
Hussmann Parts Department...........................................855-487-7778
Hussmann Warranty..........................................................800-398-740