Minusforty 20X-UDGF User manual

MNL_R290 UDGF-20X-43X_EN20220629
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
24” Deep
Glass Door Freezers
Double Door Models
20X-UDGF, 43X-UDGF
tel [phone] ·905.702.1441·fax [phone] ·MINUSFORTY.com
30 Armstrong Ave. Georgetown, Ontario Canada L7G 4R9
30 Armstrong Avenue
Georgetown, Ontario
Canada L7G 4R9
tel: [phone] or 905.702.1441
fax: [phone]
email: [e-mail]
web: minusforty.com

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 EXPLOSION. FLAMMABLE REFRIGERANT USED.
DO NOT USE MECHANICAL DEVICES TO DEFROST REFRIGERATOR. DO NOT
PUNCTURE REFRIGERANT TUBING.
• DANGER - RISK OF FIRE OR EXPLOSION. FLAMMABLE REFRIGERANT USED.
TO BE REPAIRED ONLY BY FACTORY AUTHORIZED TRAINED SERVICE
PERSONNEL. DO NOT PUNCTURE REFRIGERANT TUBING.
• CAUTION - RISK OF FIRE OR EXPLOSION. 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 EXPLOSION. DISPOSE OF PROPERLY IN
ACCORDANCE WITH FEDERAL OR LOCAL REGULATIONS.
FLAMMABLE REFRIGERANT USED.
• CAUTION - RISK OF FIRE OR EXPLOSION DUE TO PUNCTURE OF REFRIGER-
ANT TUBING; FOLLOW HANDLING INSTRUCTIONS CAREFULLY. FLAMMABLE
REFRIGERANT USED.
Propane is approved for use as a refrigerant in commercial, self-contained units in Canada
and USA under limited use conditions. It can be used in new equipment only, retrofitting is
not allowed, with a limited charge of up to 150 grams (5.3 oz) per refrigeration circuit. Even
though this is a small amount, it still presents a fire/explosion hazard if it leaks out of refrig-
erant containing parts. When mixed with air, a flammable propane-air mixture can be created
and easily ignited by sparks, open flames, or hot surfaces. This is particularly true in confined
zones. Propane is heavier than air and tends to settle at lower points.
To mitigate the risk, please follow the precautionary measures as follows:
• Avoid unit installation in areas with open flames (kitchens, repair garages or the like), or
in vicinity of open flames or high surface temperatures.
• Avoid unit installation in confined spaces. Well ventilated areas are preferred. Keep clear
all ventilation openings of obstructions.
• Do not rely on smell to detect potential leaks of propane refrigerant. Propane refrigerant is
a high purity propane gas and does not contain any stenching agent(s). Stenching agents
are typically used in fuel-grade propane and natural gas to detect their presence in air by
relying on smell.
• All repairs must be performed in well ventilated areas.
• To minimize the risk of possible ignition due to incorrect parts or improper service, compo-
nent parts shall be replaced with like components and servicing shall be done by service
personnel authorized by Minus Forty Technologies Corp.
• Do not attempt to modify the unit or remove any functional part(s) from the unit.
• Handle the unit with care to avoid any damage.
• When transporting the unit, all appropriate safety considerations must be considered.
Check with local Department of Transportation for detailed requirements pertaining to
transportation of flammable gasses.

20
WARNING
MAKE SURE THE FREEZER IS DISCONNECTED FROM THE POWER
SUPPLY BEFORE ANY SERVICE. PRESS THE FREEZER SWITCH TO
THE “OFF” POSITION THEN UNPLUG THE POWER CORD FROM THE
ELECTRICAL RECEPTACLE.
ALL SERVICE WORK MUST BE PERFORMED BY CERTIFIED, FAC-
TORY AUTHORIZED SERVICE PERSONNEL ONLY. COMPONENT
PARTS MUST BE REPLACED WITH LIKE COMPONENTS.
COMMERCIAL USE ONLY. NOT FOR HOUSEHOLD USE.
FOR INDOOR USE ONLY.
SAFETY PRECAUTIONS
READ ALL INSTRUCTIONS AND SAVE THESE INSTRUCTIONS FOR
FUTURE REFERENCE.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VA-
PORS 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
FREEZER 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.
NOTICE
OPERATING THE FREEZER FOR 24 HOURS PRIOR TO LOADING
PRODUCT IS RECOMMENDED
MONITOR FREEZER TEMPERATURE REGULARLY
WIRING DIAGRAM

19
CONTENTS
Warranty
Installation Instructions
Power Requirements
Protective Door Film
Cantilever Shelf Installation and Adjustment
Operating Instructions
Product Loading
Temperature Adjustment and Switch Functions
Controller Alarms and Signals
Controller Symbols and Functions
Manual Defrost
How to Remove the Front Bottom Grill
Condenser Cleaning
Cabinet Cleaning
Interior LED Strip Replacement
ISD Trans-Light LED Panel Replacement
ISD Trans-Light LED Strip Replacement
Graphic Panel Replacement (Trans-Light)
Troubleshooting Guide
Parts List
Illustration (20X-UDGF)
Illustration (43X-UDGF)
Wiring Diagram
1
2
2
2
3
4
5
6
6 - 7
7
8
8
9
9 - 10
11
12
13 - 14
14
15 - 16
17
18
19
20
ILLUSTRATION 43X-UDGF

18
1
STANDARD WARRANTY FOR MINUS FORTY®
REFRIGERATION EQUIPMENT 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
ILLUSTRATION 20X-UDGF

17
CABINET LOCATION: An air space of at least 1” (2.5 cm) must be maintained on all sides of the freezer.
Do not locate the freezer in a warm unventilated room exceeding 86ºF (30ºC) and 55%RH; do not place
freezer in direct sunlight; do not place freezer under or near heat range or heating vent.
CABINET LEVELING: The freezer must be completely leveled side to side and front to back or slightly
tilted front to back but never tilted forward. Once the freezer is placed in its final location, use a car-
penter level to level the freezer. Proper leveling of the freezer is important for the door closing and
water drainage during 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 freezer,
or clockwise to lower, until they reach the leveled position. Lastly, tighten the nuts again to lock the legs.
INSTALLATION INSTRUCTIONS
• DO NOT USE AN EXTENSION CORD
• DO NOT CUT, REMOVE OR BYPASS THE GROUNDING PRONG FROM THE PLUG
• DO NOT PLUG FREEZER INTO AN OUTLET CONTROLLED BY A WALL SWITCH
• ENSURE POWER CORD IS NOT CUT OR DAMAGED FROM PINCHING, KNOTTING, OR MISHANDLING
NOTICE:
Failure to follow these instructions may void the warranty and/or cause loss of product.
All 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 freezer may be
interrupted and freezing performance can be adversely affected which may cause equip-
ment damage and/or product loss.
Voltage supply to the freezer 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.
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.
WARNING
These freezers MUST be installed on a dedicated grounded circuit protected with a 15 Amp circuit breaker
or a 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.
NEMA 5-15P
POWER REQUIREMENTS:
PROTECTIVE DOOR FILM
PARTS LIST
No Description
1Top Display Assembly (Metal or Molded)
(43X-UDGF only)
2Header LED Light Panel or LED Strips
(43X-UDGF only)
3 Bushing, Nylon(c/w Door)
4 LED Strip
5 Rear Grill
6 Post, Cantilever-Centre
7 Post, Cantilever-Sides
8 Shelf
9 Interior Back Grill
10 Bracket, Cantilever
11 Front Bottom Grill(Metal or Molded)
12 Torsion Shaft (c/w Door)
13 Door Top Bracket(Left)
14 Door Top Bracket(Right)
15 Heater Breaker Seal LED
16 Torsion Pin
17 Nylon Washer
18 Torsion Bar (c/w Door)
19 Door Assembly(Left)
20 Door Assembly(Right)
21 Door Bottom Bracket(Left)
22 Door Bottom Bracket(Right)
23 Cabinet Anti-Condensate Heater
24 LED Driver
25 Door Switch
26 Pressure Relief Ball
27 Heater Breaker Seal(Bottom/Top)
28 Appliance Leg (Optional)
29 Leveling Leg
No Description
30 Caster
31 Evaporator Coil
32 Defrost Heater
33 Drain Tube Heater
34 Evaporator Tray
35 Evaporator Styrofoam Pad
36 not used
37 Evaporator Shroud
38 Evaporator Fan
39 Relay Potential
40 Run Capacitor
41 Start Capacitor
42 Fan Blade (Condensing Unit)
43 Fan Motor (Condensing Unit)
44 Compressor
45 not used
46 Filter Drier
47 Condensate Tray
48 Condenser Coil
49 Rocker Switch
50 Controller
51 Compressor Relay
52 not used
53 Evaporator Fan Wires
54 Compressor Discharge Line
55 Power Cord
56 not used
57 Compressor Harness
58 Heater Breaker Door
59 5 Pole Terminal Block
2

316
The freezer is supplied with a shelving system consisting of wire shelves with cantilever side brackets
and pre-installed back posts.
CANTILEVER SHELF INSTALLATION AND ADJUSTMENT
for online reference go to minusforty.com
TROUBLESHOOTING GUIDE CONT...
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 pages 11, 12-13)
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. • Freezer 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 in the
controller section. (pages 6-7)
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 freezer is disconnected from the power supply before any service. Press the
freezer switch to the “Off” position then unplug the power cord from electrical receptacle.
All service work must be conducted by a certified technician only.
2. On the right side of the shelf, install one cantilever bracket on the inner frame.
Then, push the assembly down to secure in place.
3. Hold shelf/bracket assembly with both hands and slide into desired slots on the posts
at the back of the unit.
Follow these steps for shelving assembly and installation:
1. On the left side of the shelf, install one cantilever bracket on the outer frame.
4. Install the remaining brackets and shelves following the same steps above at the desired
shelf positions.
FRONT VIEW TOP VIEW
CANTILEVER
BRACKET
TOP VIEW
CANTILEVER
BRACKET
FRONT VIEW
FRONT VIEW
FRONT VIEW

415
Once the freezer is running, the inside temperature will start to cool down within a couple of minutes.
Ensure that the freezer 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 recommended to
run the freezer empty for 24 hours before loading any products.
NOTE:
If the freezer is running and the power supply is interrupted, the freezer will not restart
Immediately. There is a 6 minute delay for compressor protection.
OPERATING INSTRUCTIONS
WARNING
Check with your power company if you are not certain of your power supply.
Before connecting to power supply the freezer should be upright and idle for at least 1 hour.
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
listening for a slight humming or a slight vibration.
for online reference go to minusforty.com
TROUBLESHOOTING GUIDE
Problem Possible Cause Action
Freezer not operating. • Freezer 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 operating.
• Freezer located in direct sunlight or
ambient (room) temperature is too hot.
• Condenser clogged with dust.
• Move freezer away from direct
sunlight.
• Room temperature is recommended
not to exceed 86ºF (30ºC), 55% RH.
• See page 9 (Cleaning)
Condensing unit operating
for a prolonged period or
continuously.
• Freezer 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 9).
• Defrost manually if required
(See page 8).
Freezer 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 6).
• Follow instructions for product
loading (See page 5)
• 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 9)
WARNING
Make sure the freezer is disconnected from the power supply before any service. Press the
freezer switch to the “Off” position then unplug the power cord from electrical receptacle.
All service work must be conducted by a certified technician only.

514
NOTICE:
Ensure the freezer has reached the proper operating temperature before loading product.
The electronic control displays the interior cabinet temperature.
Product loss is not covered under warranty.
PRODUCT LOADING
DO NOT stock any products against the
evaporator fans. See load limit labels inside
the cabinet for reference.
DO NOT block the air space behind the grill.
Free space is required for proper air circulation.
DO NOT overstock the unit.
For enhanced performance of the unit and to avoid spoilage of perishable products, follow these
instructions:
DO NOT stock any products against the
evaporator fans. See load limit labels inside
the cabinet for reference.
DO NOT block the air space behind the grill.
Free space is required for proper air circulation.
DO NOT overstock the unit.
ISD TRANS-LIGHT LED STRIP REPLACEMENT CONT’D
WARNING
Make sure the freezer is disconnected from the power supply before any service. Press the
freezer 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 out the old panel and
replace with the new panel.
Plug the freezer in and make
sure the light switch on the
bottom grill is in the ‘ON’
position.
GRAPHIC PANEL REPLACEMENT (IF EQUIPPED)
Plug the freezer in and make
sure the light switch on the
bottom grill is in the ‘ON’
position.
Remove the two plastic screw
covers and the two screws from
the right hand display end cap.
Slide the right hand display end
cap from the display frame.
Replace the display end cap.
Replace the plastic screw
covers on the display end
cap.
Replace the two screws and plastic
screw covers on the display end cap.
To turn the display lighting “ON” or
“OFF”, use the display light switch.
To turn the display lighting
“ON” or “OFF”, use the display
light switch.