Minusforty 22-UDGH User manual

MNL_R290 UDGH LOCK_EN181201
Model:
Serial Number:
Date of Purchase:
To better help you obtain assistance or service should you ever need it, write down the
following information about the product. This information is on the identification label
located on the left hand inside wall of the cabinet. We advise you to keep this Owners
Manual and sales slip in your possession.
Owners Manual
Glass Door Dual Temperature Unit
Model: 22-UDGH
OPTIONAL
tel [phone] ·905.702.1441·fax [phone] ·MINUSFORTY.com
30 Armstrong Ave. Georgetown, Ontario Cana a L7G 4R9
30 Armstrong Avenue
Georgetown, Ontario
Cana a L7G 4R9
tel: [phone] or 905.702.1441
fax: [phone]
email: [e-mail]
web: minusforty.com

23
ILLUS RA ION
WARNING
IN THE EVENT THE ELECTRONIC SAFETY LOCK HAS LOCKED THE
DOOR, THE FOOD IN THE UNIT MUST BE INSPECTED TO INSURE ITS
SAFETY AND QUALITY FOR CONSUMPTION.
WARNING
MAKE SURE THE UNIT IS DISCONNECTED FROM THE POWER SUPPLY
BEFORE ANY SERVICE. PRESS THE POWER SWITCH TO THE “OFF”
POSITION THEN UNPLUG THE POWER CORD FROM THE ELECTRICAL
RECEPTACLE.
ALL SERVICE WORK MUST BE PERFORMED BY CERTIFIED, FACTORY
AUTHORIZED SERVICE PERSONNEL ONLY. COMPONENT PARTS
MUST BE REPLACED WITH LIKE COMPONENTS.
COMMERCIAL USE ONLY. NOT FOR HOUSEHOLD USE.
FOR INDOOR USE ONLY.
SAFE Y PRECAU IONS
READ ALL INSTRUCTIONS AND SAVE THESE INSTRUCTIONS FOR
FUTURE REFERENCE.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS
AND LIQUIDS NEAR THIS OR ANY OTHER APPLIANCE.
DO NOT TOUCH COLD SURFACES WITH DAMP OR WET HANDS. SKIN
MAY STICK TO EXTREMELY COLD SURFACES.
DO NOT ALLOW CHILDREN TO CLIMB, HANG OR STAND ON THE
UNIT’S SHELVES.
KEEP FINGERS OUT OF PINCH-POINT AREAS.
DISCONNECT POWER TO THE UNIT PRIOR TO CLEANING OR
REPAIRING.
BEFORE DISCARDING THIS OR ANY OTHER APPLIANCE, REMOVE THE
DOORS OR LIDS TO REDUCE RISK OF CHILD ENTRAPMENT.
WHEN RECYCLING THE UNIT, REFRIGERANTS MUST BE HANDLED IN
ACCORDANCE WITH LOCAL AND NATIONAL REGULATIONS.
NO ICE
OPERATING THE FREEZER FOR 24 HOURS PRIOR TO LOADING
PRODUCT IS RECOMMENDED
MONITOR FREEZER/REFRIGERATOR TEMPERATURES REGULARLY

22
PAR S LIS :
No Description
1 Door Handle, Top/Bot Mount
2 Door Bracket (Right or Left)
3 Door Switch
4 Heater Breaker Seal (Bottom/Top)
5 LED Driver
6 Pilaster
7 Basket
8 Door Assembly (Right or Left Hand)
9 Pilaster Clip
10 Shelf
11 Interior Back Grill
12 Bottom Shelf
13 Torsion Pin
14 Rear Grill
15 Door Handle
16 Leveling Leg
17 Caster
18 Front Bottom Grill
19 Door Top Bracket (Right or Left)
20 Bushing, Nylon
21 Door Bottom Bracket (Right or Left)
22 Controller (Refrigerator)
23 Evaporator Coil
24 Evaporator Tray
25 Evaporator Shroud
26 Evaporator Fan
27 Relay Potential
28 Run Capacitor
29 Start Capacitor
30 Divider
31 Divider Fan
32 Divider Louver
33 Fan Blade (Condensing Unit)
34 Fan Motor (Condensing Unit)
35 Compressor
No Description
36 Filter Drier
37 5 Pole Terminal Block
38 Controller (Freezer)
39 Rocker Switch
40 Compressor Relay
41 Power Cord
42 Nylon Washer
43 Torsion Bar
44 Defrost Heater
45 Drain Tube Heater
46 Condenser Coil
47 Condensate Tray Assembly
48 Cabinet Anti-Condensate Heater
49 Pressure Relief Ball
50 Heater Breaker Seal (LED)
51 Cabinet LED Strip
52 Thermostat, Defrost Limit
53 Recirculation Fan
54 Fan Guard
55 Magnetic Door Switch
56 Magnetic Door Switch Actuator
57 Lock Cover (Optional)
58 Camlock (Optional)
59 Lock LSIB (Optional)
60 Lock Release Pin (Optional)
61 Lock Release Spring (Optional)
62 Lock (Optional)
63 Lock Latch (Optional)
64 Lock Pushbutton (Optional)
65 12-5 VDC Converter (Optional)
66 Raspberry-Pi (Optional)
67 RS-485 Shield (Optional)
68 Housing, Connectivity (Optional)
69 Backup Battery (Optional)
70 Battery Holder (Optional)
WARNING
THIS UNIT IS CHARGED WITH PROPANE REFRIGERANT.
PROPANE IS AN EXTREMELY FLAMMABLE AND EXPLOSIVE
GAS. PLEASE READ CAREFULLY THIS MANUAL/GUIDE AND
FOLLOW ALL SAFETY PRECAUTIONS CONTAINED HEREIN TO
REDUCE A RISK OF FIRE AND/OR EXPLOSION. FAILURE TO
FOLLOW THE SAFETY PRECAUTIONS MAY RESULT IN
SERIOUS INJURY OR DEATH, AND/OR PROPERTY DAMAGE.
CAUTIONARY INSTRUCTIONS FOR UNITS CHARGED WITH
PROPANE (R290) REFRIGERANT
• DANGER - RISK OF FIRE OR E PLOSION. FLAMMABLE REFRIGERANT USED.
DO NOT USE MECHANICAL DEVICES TO DEFROST REFRIGERATOR. DO NOT
PUNCTURE REFRIGERANT TUBING.
• DANGER - RISK OF FIRE OR E PLOSION. FLAMMABLE REFRIGERANT USED.
TO BE REPAIRED ONLY BY FACTORY AUTHORIZED TRAINED SERVICE
PERSONNEL. DO NOT PUNCTURE REFRIGERANT TUBING.
• CAUTION - RISK OF FIRE OR E PLOSION. FLAMMABLE REFRIGERANT USED.
CONSULT REPAIR MANUAL/OWNER'S GUIDE BEFORE ATTEMPTING TO
SERVICE THIS PRODUCT. ALL SAFETY PRECAUTIONS MUST BE FOLLOWED.
• CAUTION - RISK OF FIRE OR E PLOSION. DISPOSE OF PROPERLY IN
ACCORDANCE WITH FEDERAL OR LOCAL REGULATIONS.
FLAMMABLE REFRIGERANT USED.
• CAUTION - RISK OF FIRE OR E PLOSION DUE TO PUNCTURE OF REFRIGER-
ANT TUBING; FOLLOW HANDLING INSTRUCTIONS CAREFULLY. FLAMMABLE
REFRIGERANT USED.
Propan is approv d for us as a r frig rant in comm rcial, s lf-contain d units in Canada
and USA und r limit d us conditions. It can b us d in n w quipm nt only, r trofitting is
not allow d, with a limit d charg of up to 150 grams (5.3 oz) p r r frig ration circuit. Ev n
though this is a small amount, it still pr s nts a fir / xplosion hazard if it l aks out of r frig-
rant containing parts. Wh n mix d with air, a flammabl propan -air mixtur can b cr at d
and asily ignit d by sparks, op n flam s, or hot surfac s. This is particularly tru in confin d
zon s. Propan is h avi r than air and t nds to s ttl at low r points.
To mitigat th risk, pl as follow th pr cautionary m asur s as follows:
• Avoid unit installation in ar as with op n flam s (kitch ns, r pair garag s or th lik ), or
in vicinity of op n flam s or high surfac t mp ratur s.
• Avoid unit installation in confin d spac s. W ll v ntilat d ar as ar pr f rr d. K p cl ar
all v ntilation op nings of obstructions.
• Do not r ly on sm ll to d t ct pot ntial l aks of propan r frig rant. Propan r frig rant is
a high purity propan gas and do s not contain any st nching ag nt(s). St nching ag nts
ar typically us d in fu l-grad propan and natural gas to d t ct th ir pr s nc in air by
r lying on sm ll.
• All r pairs must b p rform d in w ll v ntilat d ar as.
• To minimiz th risk of possibl ignition du to incorr ct parts or improp r s rvic , compo-
n nt parts shall b r plac d with lik compon nts and s rvicing shall b don by s rvic
p rsonn l authoriz d by Minus Forty T chnologi s Corp.
• Do not att mpt to modify th unit or r mov any functional part(s) from th unit.
• Handl th unit with car to avoid any damag .
• Wh n transporting th unit, all appropriat saf ty m asur s must b consid r d.
Ch ck with local D partm nt of Transportation for d tail d r quir m nts p rtaining to
transportation of flammabl gass s.

21
WIRING DIAGRAM (MODELS WI HOU ELEC RONIC LOCK)
CON EN S
Warranty
Installation Instructions
Shelf and Basket, Placement and Adjustment
Operating Instructions
Product Loading
Temperature Adjustment and Switch Functions
Controller Alarms and Signals
Controller Symbols and Functions
Electronic Food Safety Lock
General Description
Unit Locking Operation
Backup Battery (UPS) Operation
Entrapment Lock Release
Restocking Delay
Accessing / Resetting Alarm Data
Field Testing
Manual Defrost
How to Remove the Front Bottom Grill
Condenser Cleaning
Cabinet Cleaning
Interior LED Strip Replacement
Troubleshooting Guide
Wiring Diagrams
Parts Listing
Parts Illustration
1
2
3
3
4
5
6 - 7
7 - 8
9 - 13
9 - 10
10 - 11
11
12
12
12 - 13
13
14
14
15
15 - 16
17
18 - 19
20 - 21
22
23

20 1
WIRING DIAGRAM (MODELS WI H ELEC RONIC LOCK)
S ANDARD WARRAN Y FOR MINUS FOR Y®
REFRIGERA ION EQUIPMEN AND ACCESSORIES
LIMITED WARRANTY
Minus Forty®Technologies Corp. warrants its products to be free from defect as
to workmanship and materials for a period of twelve (12) months from the time
of delivery.
Minus Forty®Technologies Corp. will at its option either replace or repair any de-
fective parts returned within twelve (12) months of the time of delivery, trans-
portation charges prepaid, which Minus Forty®Technologies Corp. in its sole
discretion, determines to be defective.
This warranty shall not apply to any products that have been repaired or altered
outside of Minus Forty®Technologies Corp.’s factory or repair facilities if the re-
pairs in the judgement of Minus Forty®Technologies Corp. have affected the reli-
ability or wear of the product and nor does the guarantee apply to any product
which has been subject to misuse, accident or to any product which has not been
maintained pursuant to the instruction of Minus Forty®Technologies Corp.
This warranty does not extend to any consequential damage caused by the failure
of the product under any circumstance and further, Minus Forty®Technologies
Corp. shall not be responsible for damage to the contents of the product or any
economic loss caused by the failure of the product, whether such loss is suffered
by the customer or a third party user of the product or whether the contents are
owned by the customer or a third party user or supplier.
Effective January 1, 1996

19
2
CABINE LOCA ION: An air space of at least 6” (15.24cm) must be maintained on all sides of the unit.
Do not locate the unit in a warm unventilated room exceeding 86ºF (30ºC), 55% RH; do not place unit in
direct sunlight; do not place unit under or near heat range or heating vent.
CABINE LEVELING: The unit must be completely leveled side to side and front to back or slightly tilted
front to back but never tilted forward. Once the unit is placed in its final location, use a carpenter level
to level the unit. Proper leveling of the unit is important for the door closing and water drainage dur-
ing the defrost cycle. There are two leg levelers in the front that can be adjusted. First, loosen the nuts
using an adjustable wrench. Second, turn levelers counter-clockwise to raise the unit, or clockwise to
lower, until they reach the leveled position. Lastly, tighten the nuts again to lock the legs.
INS ALLA ION INS RUC IONS
• DO NOT USE AN EXTENSION CORD
• DO NOT CUT, REMOVE OR BYPASS THE GROUNDING PRONG FROM THE PLUG
• DO NOT PLUG UNIT INTO AN OUTLET CONTROLLED BY A WALL SWITCH
• ENSURE POWER CORD IS NOT CUT OR DAMAGED FROM PINCHING, KNOTTING, OR MISHANDLING
NO ICE:
Failure to follow these instructions may void the warranty and/or cause loss of product.
POWER REQUIREMEN S: These models require a 15 Amp dedicated and properly
grounded 115V/60Hz/1Ph circuit with a NEMA 5-15P receptacle. Wiring should be sized
according to the amperage rating stated on the serial plate. Failure to use a dedicated circuit
may cause the circuit breaker to trip off and/or cause voltage drops. As a result, power to
the unit may be interrupted and cooling performance can be adversely affected which may
cause equipment damage and/or product loss.
Voltage supply to the unit must not vary more than ±10% of the nominal 115V, or performance may be
affected. The warranty and liability does not cover damage resulting from excessive voltage variations.
NEMA 5-15P
WARNING
The unit MUST be installed on a dedicated grounded circuit protected with a 15 Amp circuit breaker or
15 Amp time delay fuse. Do not remove ground prong. If the cord or plug is damaged, replace with the same
type. Refrigeration and electrical work must be performed by a qualified technician. Failure to follow these
instructions can result in death, fire, or electrical shock.
The anti-fog glass door has a protective film on the inner side. After the
unit has been installed, peel and remove the protective film covering
the inner glass surface.
PRO EC IVE DOOR FILM
for online reference go to www.minusforty.com
ROUBLESHOO ING GUIDE (CON ’D)
Problem Possible Cause Action
Condensation on glass door. • Door not closing properly.
• Room humidity too high.
• Check the spring tension or any
obstruction
• To prevent condensation, room
humidity should be below 55%.
LED strips are not working. • Light switch is off.
• Faulty LED strip.
• Check if the light switch is on.
• Replace the LED strip. (See page 17)
Cabinet is noisy. • Part(s) loose
• Tubing vibrating
• Locate and tighten loose part(s).
• Ensure tubing is not in contact with
other tubing or components.
Door does not close tight. • Unit is not leveled.
• Hinges are loose / not adjusted.
• Gasket is out of the groove.
• Level the unit (See page 2).
• Adjust / tighten the hinge screws.
• Check gasket condition. Adjust position
or replace gasket.
Electronic control blank,
flashing, or displaying incorrect
characters.
• Wires disconnected at back of
electronic control.
• See actions described on the
controller section. (page 6)
Evaporator fan does not run. • Fan wire disconnected.
• Door switch not working.
• Defrost probe not attached to
the evaporator coil.
• Check wiring.
• Check door switch.
• Check the location of defrost probe.
It should be pressed in between fins in
the middle of the evaporator and close
to the cabinet top
WARNING
Make sure the unit is disconnected from the power supply before any service. Press the power
switch to the “Off” position then unplug the power cord from electrical receptacle.
All service work must be conducted by a certified technician only.

18 3
Once the unit has been installed and the power supply has been connected, press
the power switch to the “ON” position using a pen or pencil.
The compressor will start to run after 6 minutes. This can be confirmed by lis-
tening for a slight humming or a slight vibration.
Once the unit is running, the inside temperature will start to cool down within a couple of minutes.
Ensure the freezer/refrigerator has reached the desired temperature (this will take between 2 to 3 hours)
by checking the electronic control display readout before loading product. It is strongly reco ended
to run the freezer/refrigerator e pty for 24 hours before loading any products.
Refer to the sections TEMPERATURE AD USTMENT AND SWITCH FUNCTIONS and ELECTRONIC FOOD
SAFETY LOCK for temperature controllers and lock instructions.
NO E:
If the unit is running and the power supply is interrupted, the unit will not restart immediately.
There is a 6 minute delay for compressor protection.
OPERA ING INS RUC IONS
WARNING
Check with your power company if you are not certain of your power supply.
Before connecting to power supply the unit should be upright and idle for at least 1 hour.
SHELF AND BASKE , INS ALLA ION AND ADJUS MEN
The unit is supplied with shelves and molded or metallic clips. The unit has slotted pilasters to position
the shelves according to the customer’s needs.
Metallic Clip ShelfShelfMolded Clip
The clips can be removed at any time if a new position is chosen for the shelf or basket. To remove, grab
the clip with your thumb and index finger, then push up the bottom surface until the clip is free. Once
the clips are in place, put the shelf on top. Once the shelves are securely in place, baskets (if equipped)
may be positioned on the shelves.
for online reference go to www.minusforty.com
ROUBLESHOO ING GUIDE
Problem Possible Cause Action
Freezer not operating. • Power switch located on the front grill
turned off.
• Fuse blown / circuit breaker tripped.
• Power cord unplugged.
• Receptacle not working.
• Improper voltage supplied to
cabinet / over load circuit.
• Turn power switch on.
• Replace fuse/reset circuit breaker.
• Plug in power cord.
• Check receptacle.
• Remove extension cords or other
equipment on the same circuit.
Freezer not getting cold but
compressor is running
• Unit located in direct sunlight or
ambient (room) temperature is too hot.
• Condenser clogged with dust.
• Move unit away from direct
sunlight.
• Room temperature is recommended
not to exceed 86ºF (30ºC), 55% RH.
• See page 15 (Cleaning)
Condensing unit operates
for a prolonged period or
continuously.
• Unit loaded with excessive amount
of warm product.
• Prolonged door opening or door ajar.
• Door not closing properly.
• Clogged condenser.
• Evaporator coil blocked with ice or
frost.
• Allow enough time for product
to cool down.
• Close door when not in use.
Avoid prolonged door openings.
• Level the unit (See page 2).
Check gasket condition.
Check the door spring.
• Clean the condenser (See page 15).
• Defrost manually if required
(See page 14).
Freezer/refrigerator cabinet
temperature too high.
• Electronic control set too high.
• Poor air circulation in cabinet.
• Insufficient clearance around cabinet or
ambient temperature too high.
• Clogged condenser
• Adjust control setting (See page 5).
• Follow instructions for product
loading (See page 4)
• Keep at least 6” (15.24cm) free
space around all sides of the freezer.
Room temperature is recommended
not to exceed 86ºF (30ºC), 55% RH.
Make sure the air flow to the
compressor is not obstructed.
• Clean the condenser (See page 15)
WARNING
Make sure the unit is disconnected from the power supply before any service. Press the power
switch to the “Off” position then unplug the power cord from electrical receptacle.
All service work must be conducted by a certified technician only.

17
4
NO ICE:
Ensure the freezer and refrigerator compartments have reached the proper operating temperature
before loading product. The electronic control displays the interior cabinet temperatures.
Product loss is not covered under warranty.
DO NO block the air space behind the grill.
Free space is required for proper air circulation.
DO NO stock any products against the
evaporator fan. See load limit labels inside
the cabinet for reference.
DO leave at least 6” (15.25cm) free space between
the fan and the product for air circulation.
PRODUC LOADING
For enhanced performance of the unit and to avoid spoilage of
perishable products, follow these instructions:
AVOID removing the bottom shelfs from the inner
bottom.
A
B
CC
C
D
D
DO NO overstock the unit.
D
D
A
A
B
E
Remove silicone corner beads.
Pry the screwdriver between
plastic cover and cabinet frame.
Pry from one end to the other.
Pry the screwdriver between
plastic lens cover and cabinet
frame.
Locate the wire for the LED
strip in the compressor com-
partment and disconnect from
connectors.
Carefully remove the plastic
lens cover from cabinet frame.
Install the new LED strip into
the plastic cover.
Attach wires, observing color
coding. Press lens cover back
to cabinet frame.
IN ERIOR LED S RIP REPLACEMEN
Plug the unit in and make sure
the light switch on the
bottom grill is in the ‘ON’
position.
WARNING
Make sure the unit is disconnected from the power supply before any service. Press the
power switch to the “Off” position then unplug the power cord from electrical receptacle.
All service work must be conducted by a certified technician only.
Slide faulty LED strip from
plastic cover.
Snap plastic cover back to cab-
inet frame. Apply silicone at
plastic cover corners.

16 5
The unit is equipped with two electronic controllers.
The controller on the right side of the front botto grill controls:
• Temperature inside the freezer compartment through operation of compressor, condenser fan, and
evaporator unit. The freezer electronic controller turns the refrigeration system OFF when the freezer
compartment reaches the set temperature, and turns the refrigeration system ON after the freezer
compartment temperature rises by 8°F or after 7 minutes, whichever lasts longer.
• Food-safety lock for the freezer (lower compartment)
The controller on the left side of the front botto grill controls:
• Temperature inside the refrigerator compartment trough operation of refrigerator recirculation fan
and cold-intake-air fan. The refrigerator electronic control turns the cold-air-intake fan OFF when the
refrigerator compartment reaches the set temperature, and turns the cold-air-intake fan ON after the
refrigerator compartment temperature rises by 3°F.
The re-circulating fan is located inside the refrigerator compartment (lower back) and runs contin-
uously except when the refrigerator door is open. The cold-air-intake fan is located in the freezer
compartment in front of the evaporator shroud.
• Food-safety lock for the refrigerator compartment (upper compartment)
The electronic controllers display actual temperatures inside the respective compartments.
The recirculating fan runs continuously except when the refrigerator door is open.
EMPERA URE ADJUS MEN AND SWI CH FUNC IONS
ELEC RONIC CON ROLLER
LIGHTPOWERELECTRONIC CONTROL
To adjust the set temperature inside a freezer or refrigerator compartment, follow these steps:
1. Locate the respective electronic controller (left or right side of the bottom grill)
2. Press and release P button; the set temperature and SP1 are displayed alternatively on the controller
2. Press the UP or DOWN buttons to adjust the set temperature.
3. Press P to store the adjusted value. The electronic control will return to actual compartment
temperature display. The U button on the electronic control is also used for displaying compartment
and evaporator temperatures (Pr1 and Pr2 parameters) by alternately pressing and releasing the
button.
1. POWER switch turns the refrigeration system (including all electrical parts) ON or OFF.
(use a pen or pencil to press the power switch to the ON or OFF position).
2. LIGHT switch turns the internal and external lights ON or OFF.
There are two switches located on the right hand side of the freezer controller.
Their functions are to manually switch electronic components of the entire unit
EX ERIOR CLEANING
Use only mild non-abrasive liquid cleaner, water and a soft cloth for the painted surfaces and
a stainless steel polish and cleaner for the stainless steel surfaces if desired.
CLEANING GLASS DOOR EX ERIOR
Due to the special coating on the glass, use only a mild, non-abrasive liquid cleaner, water,
and a soft cloth. The same applies to the plastic door frame.
AN I FOG GLASS DOOR IN ERIOR
The anti-fog glass door has a protective film on the inner side. After the unit has been
installed, peel and remove the protective film covering the inner glass surface.
The Anti-Fog coating is a scratch resistant, permanent coating applied on the inner surface
of the door glass. It prevents fogging and icing of cold glass surface after door opening and
closing.
Cleaning can be performed using common household glass cleaners (Sidolin®, Windex®,
Mr. Muscle ®) and a tissue or paper towel. However, on very cold surfaces these cleaners may
freeze. In these cases a mixture with 30% pure alcohol and water may be used.
At temperatures above 0°C, warm hand temperature water with a mild detergent can be
applied.
Do not use abrasive cleaners or materials like Ajax®, Scotch Brite®or Steel Wool.
Do not contaminate the door with silicone.
Do not use tape, glue, stickers, attachments, magic markers or similar products on the
coating.
Do not use razor blades or any other mechanical device to remove foreign residues or
objects directly from the coating.
Do not use cleaners or materials that hinder the anti-fog performance by leaving residue or
damaging the surface. Examples of these cleaners include: ArmorAll®, Tilex®, Bleach,
Windex®No-Drip, Windex®Wipes, Pledge®, or any product containing silicone oils or waxes.
Recommended cleaners include: Greased Lightning®, Formula 409®Grease & Grime®,
Fantastik®, Windex®Vinegar, Windex®Original, MicroClean Professional APC®(formerly
Now® all purpose cleaner), Mean Green®, or Mr. Clean®(degreasing cleaners).
Recommended cleaning is with a soft dry or slightly damp towel, or with one of the
degreasing cleaners listed above.
CABINE CLEANING (CON ’D)

615
The electronic controllers can detect and signal several alarm conditions: high/low temperatures, door
open and open or short-circuited temperature probes. If the alarm conditions last longer than
pre-programmed time delays, the controller will turn ON an audio signal (buzzer). Also, an LED light
located in the upper left corner of the controller, next to the caution symbol, will glow in case an alarm
is active.
Once the alarm conditions have been fixed, the controller will turn off the alarms on its own. Alarms can
be disabled by pressing any controller button, during alarm conditions.
CON ROLLER ALARMS AND SIGNALS
Message Cause Action
Prl diSC Cabinet temperature probe open • Check connections
• Replace probe
Prl Short CC Cabinet temperature probe short-circuited
Pr2 diSC Defrost probe open • Check connection
• Replace probe
Pr2 Short CC Defrost probe short-circuited
EPr Internal memory error • Replace controller
Err Internal memory error • Replace controller
StArt dELAy Start up delay in progress • Wait for 6 minutes
Hi °F or Hi °C Maximum temperature alarm in progress • Check door
• See Troubleshooting (pages 18-19)
Lo °F or Lo °C Minimum temperature alarm in progress • Adjust set temperature
door oPEn Door open • Close door
dEFroSt Defrosting in progress • none
PoSt dEFroSt Post-defrosting in progress • none
CC CyCLE “Turbo” mode active • none
HAC Stored HACCP alarm on controller • none
HI F deLAy or HI C dELAy HACCP delay after stocking command
• Press the door switch 3 times
repeatedly within 5 seconds
to enable restocking.
AL Digital input alarm in progress • none
LocHed Door Locked
• Determine cause (high temperature,
sensor failure or controller error)
and rectify. Inspect food. Reset lock.
UnLocHed Door unlocked • none
Message Cause Action
Prl diSC Cabinet temperature probe open • Check connections
• Replace probe
Prl Short CC Cabinet temperature probe short-circuited
Pr2 diSC Defrost probe open • Check connection
• Replace probe
Pr2 Short CC Defrost probe short-circuited
Int Error Internal memory error • Replace controller
Y39L ELECRONIC CONROLLER
X34L ELECRONIC CONROLLER
CABINE CLEANING
To clean the exterior whether it has the original finish or a decal package, use only a mild non-abrasive
liquid cleaner, water and a soft cloth. For stainless steel parts, a commercial stainless steel polish and
cleaner can be used. Always apply the cleaner to the soft cloth and then clean the unit. Never apply the
cleaner directly to the unit. Excess liquid applied to the surface may seep into the electronic control and
switches which can cause an electrical hazard or a malfunction.
DO NO USE abrasive or caustic cleaners, scouring pads, solvents or flammable liquids.
CAU ION
Do not apply hot water on cold glass components. Allow glass to warm sufficiently to prevent
shattering.
CAU ION
Do not use ammonia or bleach based cleaners or abrasive type cleaners.
Do not use abrasive cleaning pads.
WARNING
To reduce the risk of fire, electrical shock or personal injury, disconnect the unit from the power
source before cleaning. Press the power switch to the “Off” position, then unplug the power cord
from the receptacle. Keep liquids away from electrical and electronic components.
GENERAL
The unit should be cleaned at regular intervals to meet a good standard of hygiene and
to keep the unit attractive as an effective point of purchase display.
IN ERIOR CLEANING
Use only mild non-abrasive liquid cleaner, water and a soft cloth for the entire unit
interior. Make sure to wipe off all residue.
NO E:
The cleaning of the condenser is a service not covered under the warranty
The unit is designed for minimal condenser cleaning. With the “lint free” condenser design, most dust
and dirt will pass right through the condenser. To insure the proper operation, we recommend sched-
uled check-ups and cleaning every three to four months. This period may be shorter or longer de-
pending on the location in which the unit was installed. A dirty condenser can result in a voided
warranty, part failure, product loss, and higher electrical cost. The steps to clean the condenser are as
follows:
CONDENSER CLEANING
1. Remove the front bottom grill (see page 14)
2. Press the power switch to the “Off” position.
3. Unplug power cord from electrical receptacle.
4. Brush the dirt, dust and paper off the condenser coil plate, all the way to the fan. Use either a
vacuum or blow with a compressed air supply if available.
5. When finished with cleaning, plug power cord back into receptacle.
6. Press the power switch to the “On” position.
7. Replace bottom grill (see page 14)

14 7
CON ROLLER ALARMS AND SIGNALS (CON ’D)
Message Cause Action
StArt dELAy Start up delay in progress • Wait for 6 minutes
Hi °F or Hi °C Maximum temperature alarm • Check door
• See Troubleshooting (pages 18-19)
Lo °F or Lo °C Minimum temperature alarm • Adjust set temperature
door oPEn Door open • Close door
Y39L ELECRONIC CONROLLER (CON’D)
CON ROLLER SYMBOLS AND FUNC IONS
1. Indicates compressor status:
Light on - Compressor cooling on
Light off - Compressor cooling off
Light flashing - Start-up delay in progress
2. Indicates defrost status:
Light on - Defrost in progress
Light flashing - Freezer in dripping mode
3. Indicates fan status:
Light on - Cabinet fan ON
Light off - Cabinet fan OFF
Light flashing - Start-up delay in progress after defrost.
4. Indicates internal clock is running.
Flashing slowly - clock error (ie:clock chip not working).
Flashing rapidly - the clock battery is drained.
5. Indicates the alarm status:
Light on - Alarm is on
Light off - Alarm is off
Light flashing - Alarm silenced or memorized
6. Indicates the lock status:
Light on - Unit locked
Light off - Unit unlocked
Light Flashing - Locking delayed
At the left side of the controller display are the following LED indicators:
2
1
3
6
4
5
X34L ELECRONIC CONROLLER
MANUAL DEFROS
With a Phillips screwdriver remove the bottom
screws from the grill.
Grasp the bottom grill
from the sides and slide it
up and towards you to release the hooks.
HOW O REMOVE HE FRON BO OM GRILL
To replace bottom grill, align hooks of the grill with slots and slide the grill back onto the unit.
Replace the bottom screws to secure the grill to the cabinet.
This unit is designed for automatic defrost. Every eight hours the refrigeration system is turned OFF and
the defrost/drain heaters are activated to melt the ice from the evaporator coil and drain pan. If the unit
is not leveled properly, the water may not drain out of the unit, it will re-freeze and ice gradually builds
up. Excessive ice buildup reduces cooling performance and may cause the failure of refrigeration sys-
tem and product loss. Ice buildup may be noticed through the evaporator fan grill on the coil fins.
To perform a manual defrost, follow these steps:
1. Press the UP arrow button and hold it for 6 seconds.
2. Wait until the electronic control stops defrost (the Def LED dot flashes)
3. If ice is still noticeable on the evaporator, press the power switch to the “Off” position then
disconnect the unit from the power supply.
4. Take down the evaporator shroud and use a hair dryer to quickly melt the ice.
5. Make sure the unit is leveled side to side, and front to back or slightly tilted front to back.

813
CON ROLLER SYMBOLS AND FUNC IONS (CON ’D)
At the left side of the controller display are the following LED indicators:
1. Indicates compressor status:
Light on - Compressor cooling on
Light off - Compressor cooling off
Light flashing - Start-up delay in progress
2. Indicates defrost status:
Light on - Defrost in progress
Light flashing - Freezer in dripping mode
3. Indicates fan status:
Light on - Cabinet fan ON
Light off - Cabinet fan OFF
Light flashing - Start-up delay in progress after defrost.
4. Indicates the alarm status:
Light on - Alarm is on
Light off - Alarm is off
Light flashing - Alarm silenced or memorized
2
1
3
4
FIELD ES ING OF HE FOOD SAFE Y LOCK
If an alarm flashes (H.01...H.10) when a user scrolls through the alarm list, the flashing indicates that
the alarm has never been reviewed. After pressing the P key on an alarm and reviewing any of its data,
the alarm will be displayed solid afterwards to indicate that the alarm has been reviewed. If the alarm
is still ongoing at the time of its display, the data are displayed but the ongoing alarm will be flashing
all time. In the event of non-reviewed and/or still ongoing alarms, the electronic control displays the
message “HAC”, alternating it with the temperature reading.
An alarm can be deleted from the controller memory by holding the arrow-down button for more than
5 seconds while one of the alarm data is displayed. After alarm deletion, the controller displays three
dashes: ---. Similarly, the value of the “H.dL” parameter can be reset to 0 by holding the arrow-down
button for more than 5 seconds while the value is displayed. All recorded alarms can be deleted at once,
by holding the arrow down button in the controller regular display. After all alarms deletion, the con-
troller displays three dashes: ---.
Ensure the unit power cord is plugged into an electrical receptacle and the electronic controller is pow-
ered. Proper operation of the food safety lock can be verified by following steps:
1. Make sure the compartment door that you want to check is closed and unlocked.
2. Locate the respective controller for the unit compartment door. Push and hold “P” and “U” buttons
on the controller simultaneously for 5 seconds (Figure 5) until the controller start scrolling
“LocHed”message and beeps once. The lock should engage and the door should stay locked for
about 20 seconds. Then, the controller resets the lock, unlocks the compartment door, scrolls
“UnLocked” message three times, and beeps twice
The chart below (Figure 6) shows how to navigate through the controller to access alarm data.
ACCESSING AND RESE ING ALARMS DA A ON HE ELEC RONIC CON ROLLER CON ’D.
Controll r typical
display wh n alarm(s)
ar r cord d. Pr ss and hold “P” button for
approximat ly 5 s conds
Pr ss and hold “U” button for
approximat ly 2 s conds
Pr ss and r l as “P” button
Alarm typ Alarm start y ar Alarm start month
Alarm start day
Alarm duration (hrs) Alarm duration (mins) P ak alarm t mp ratur
Alarm start hour Alarm start minut
Pr vious
Alarm
N xt
Alarm
Figure 6
Y39L ELECRONIC CONROLLER

9
12
RES OCKING DELAY
ACCESSING AND RESE ING ALARMS DA A ON HE ELEC RONIC CON ROLLER
During or immediately after product stocking, temperatures inside the cabinet food compartment(s)
may rise above the food safety temperature limits, thereby causing a potential for nuisance door lock-
ing. To prevent such nuisance locking events and to reset the lock, the restocking alarm delay needs to
be activated. This delay can be activated by slightly opening and closing the compartment door repeat-
edly three times within 5 seconds.
After the triple switch activation, a scrolling message “HI F deLAy or HI C dELAy” is displayed three times
on the controller accompanied by two buzzer beeps. This confirms that the delay has been accepted by
the electronic controller, that any active high temperature alarm is cancelled, and that the restocking
delay is now in progress. This delay prevents the lock from being activated for a factory pre-set time
(30 minutes on refrigerators, 75 minutes on freezers). During this delay time, the freezer/refrigerator
should bring temperature in the food storage temperature within normal operating range.
The electronic controller records two types of alarms: high temperature and power failures (black outs).
If there have been multiple alarms, the electronic controller records up to 10 alarms sorts them form
the most recent (H.01) to the oldest (H.10). If there have been more than 10 alarms, the electronic con-
troller deletes alarms on historical basis (newer ones are kept), and keeps the number of deleted alarms
in the parameter H.dL by increasing this variable by 1 each time an alarm is deleted.
For each recorded alarm, the following data are recorded:
• Alarm type
A.H1, high temperature alarm
A.bo, power failure (black out)
• Alarm start date and time
y.dd, dd = 10 ÷ 99, last two digits of the year
M.dd, dd = 1 ÷ 12, month
d.dd, dd = 1÷ 31, day
h.dd, dd = 0 ÷ 23, hour
n.dd, dd = 0 ÷ 59, minute
NO E: Since the electronic controller is powered through a battery backup device, the electronic
controller will record power failure when the battery backup drains out, not when the
freezer/refrigerator losses power on the electric receptacle.
• Alarm duration
E.dd, dd = 0 ÷ 99, number of hours the alarm lasted
e.dd, dd = 0 ÷ 23, number of minutes the alarm lasted
• Peak temperature in the cabinet during the high temperature alarm condition (A.H1), or
temperature in the cabinet when the power is restored after power failure (A.bo)
The chart (Figure 6.) on Page 13 shows how to navigate through the controller to access alarm data.
The lock is equipped with an emergency entrapment release
feature.
In the event of entrapment the door can be unlocked from in-
side the compartment(s) by pressing and holding the pushbut-
ton, then pushing against the door (Figure 4).
EN RAPMEN LOCK RELEASE ELEC RONIC FOOD SAFE Y LOCK (IF EQUIPPED)
WARNING
READ HIS SEC ION IN I S EN IRE Y AND FOLLOW OU LINED INS RUC IONS BEFORE OP-
ERA ING HE UNI . IN HE EVEN HE ELEC RONIC SAFE Y LOCK HAS LOCKED HE UNI ,
HE FOOD IN HE UNI MUS BE INSPEC ED O INSURE I S SAFE Y AND QUALI Y FOR
CONSUMP ION.
AENION
IMMEDIATELY AFTER POWERING ON THE UNIT, “HAC” MESSAGE MAY BE SCROLLING ON THE
ELECTRONIC CONTROLLER. “HAC” INDICATES A PRESENT, OR PAST UNREVIEWED, HIGH TEM-
PERATURE ALARM CONDITION AND/OR POWER LOSS. TO REVIEW DATE, TIME AND DURATIONS
OF THOSE EVENTS, REFER TO THE APPLICABLE SECTION BELOW. TO CLEAR “HAC” MESSAGE,
HOLD DOWN THE ARROW BUTTON ON THE CONTROLLER UNTIL THREE DASHES APPEAR,
THEN RELEASE THE BUTTON. “HAC” SCROLLING MESSAGE SHOULD DISSAPPEAR.
AENION
TURN THE BATTERY BACKUP OFF WHEN THE UNIT IS DISCONNECTED FROM THE MAIN POWER
SOURCE TO AVOID DEPLETING THE BATTERY BACKUP CHARGE. DEPLETING THE BATTERY
BACKUP CHARGE REDUCES ITS LIFECYCLE AND LEADS TO BATTERY REPLACEMENT. SEE THE LA-
BELS ON THE UNIT AND SECTIONS BELOW HOW TO TURN THE BATTERY BACKUP ON/OFF.
The purpose of the electronic food safety lock is to lock the unit door in the event of unit malfunction-
ing, thereby preventing public access to potentially hazardous food. The electronic controller continu-
ously monitors temperature inside the food storage compartment and locks the door via a mechanical
lock if the temperature stays above these limits:
• 41°F (5°C) for 30 minutes or longer in refrigerators
• 0°F (-18°C) for 30 minutes or longer in freezers.
The electronic food safety lock system consists of these six (6) major components:
• Electronic controller(s). A factory pre-programmed electronic controller that monitors temperature
inside the food compartment and activates the mechanical lock if food safety temperature limits are
reached. For Hybrid (Freezer and Refrigerator compartments) two controllers are used to monitor, con-
trol, and lock each compartment independently. The left side controller is for the upper refrigerator
compartment, and the right side controller for the lower freezer compartment. See Figure 1 for the con-
troller’s location (right side controller shown).
• Mechanical lock(s). A mechanical locking mechanism located on the left side of unit. The lock me-
chanically locks the compartment door when it receives an electrical signal from the electronic controller.
For Hybrid units, each compartment has its own lock. See Figure 2 for the lock(s) location.
GENERAL DESCRIPION
Figure 1 Figure 2

10 11
• Lock status Indicator Board(s) (LSIB). An electronic PCB that provides power to the adjacent lock
and shows the lock status (locked or unlocked) via two onboard LEDs. A solid green LED indicates that
12VDC is present at the board. During normal operation, the green LED is always on when the unit is
powered. A flashing red LED indicates that the lock/door is in the locked stated. See Figure 2 for the
board(s) location. For Hybrid units, there are two LSIB boards to power the adjacent lock for each com-
partment.
• Battery Backup. The purpose of the battery backup is to supply backup electricity to the electronic
controller(s) and to the mechanical locks in the event of power failure (black out). It allows the electronic
controllers to continue monitoring food compartment temperatures during prolonged power losses,
and activates the door locking mechanism when food safety temperature limits are reached. The bat-
tery backup powers ONLY the controller(s) and lock(s) during a power outage and does not power any
other electrical components of the freezer/refrigerator. There is only one battery backup per unit. See
Figure 3 for its location and how to turn it ON or OFF.
• Lock key(s). A special-purpose key that is used to temporarily override the mechanical lock to gain
access to the inside of the locked out compartment. See Figure 2 for the lock key and slot location.
• Entrap ent lock(s) release. This is an emergency entrapment release feature to temporarily over-
ride the lock from the inside of the locked out compartment. For Hybrid units, each compartment has
its own entrapment lock release mechanism. See Figure 4 for the entrapment release location.
UNI LOCKING OPERA ION
Depowered State: In the completely depowered state (power cord unplugged and battery backup
switched off), the door(s) to the unit food compartment(s) are locked. To gain access to the inside of
the compartment(s), insert the lock key into the key slot and turn it clockwise until resistance is felt. Hold
the lock key in that position, and use a free hand to grab the compartment door handle and pull the door
open.
After Powering On: Immediately after powering the unit by plugging the unit power cord into a wall re-
ceptacle and switching on the battery backup, the compartment doors are still locked. To unlock the
doors and reset the lock, press and hold simultaneously P and U buttons (Figure 5) on each compart-
ment controller for about 5 seconds and until the controller buzzer beeps twice and scrolls “Unlocked”
message three times. The unit is now in its regular operation, ready for products stocking after tem-
perature pull-down and stabilization period, and use by customers thereafter.
Figure 3
Figure 5
Figure 4
During Nor al Operation: During unit operation, the food safety lock can be triggered to lock the
door(s) by any of the following triggers: (1) high temperature alarms, (2) cabinet sensor open or short
fault, or (3) controller internal errors. An alarm condition will cause the controller to beep cyclically and
a scrolling “Locked” message will be displayed. To gain temporary access to the inside of the locked out
compartment while the locking trigger(s) is still active, press and hold simultaneously P and U buttons
on the respective controller for about five (5) seconds and until the controller buzzer beeps twice and
the controller scrolls “Unlocked” message. The door stays unlocked for about 20 seconds, then the
controller relocks the door upon closing, beeps once, and scrolls “Locked” message three times.
Lock Reset: After all locking trigger(s) are rectified, such as temperature falls below acceptable high limit
levels (41°F (5°C) for refrigerators or 0°F (-18°C) for freezers), the door remains locked until the lock
is reset through human intervention. To unlock the door, reset the lock, and return the unit to its regu-
lar operation, press and hold simultaneously P and U buttons for about 5 seconds and until the con-
troller buzzer beeps twice and the controller scrolls “Unlocked” message three times
The battery backup is located at the back of the unit. Its function is to provide power to the controller(s)
and mechanical lock(s) during the main power failures so that the controller can keep monitoring the
cabinet temperature and activate the lock(s) during prolonged blackouts. The battery backup has eight
AA alkaline batteries connected in series to provide 12VDC.
To activate the battery backup, slide the switch on top of the battery backup enclosure to ON position
(Figure 3). To prevent the battery backup from premature charge drain and to extend its lifecycle, slide
the switch on top of the battery backup enclosure to OFF position (Figure 3) when the unit is not in use
and disconnected from the main power source.
A set of new eight batteries is capable of powering the electronic lock safety system controller(s) and
lock(s) for about 7 hours.
To check whether the battery backup is functioning, follow these steps:
1. Ensure the battery backup switch is in the ON position.
2. Turn the power switch beside the freezer controller to off position to disconnect the main power to
the unit. If the controllers lose power and the locks engage immediately or within a few minutes, then
the batteries in battery backup enclosure should be replaced. To replace batteries, undo the screw on
the battery cover and replace the eight AA batteries with a new set of alkaline batteries (Figure 7). Use
high quality brands such as Duracell, Panasonic, etc. Ensure the battery polarity is followed as per in-
dicators on the backup housing.
3. Repeat steps 1 and 2 periodically, every 3 to 4 months.
UNI LOCKING OPERA ION (CON ’D)
BA ERY BACKUP OPERA ION
Figure 7