
To reduce the risk of fire, electric shock or injury to persons using this freezer, read all
instructions and follow basic safety precautions before using the unit, including the following:
Do not modify the plug provided with the freezer. If it will not fit the outlet,
have a proper outlet installed by a qualified electrician.
Do not position equipment so it is difficult to disconnect from the power supply.
freezer must be at least 6” away from any wall or object on any side.
While under warranty, do not attempt to repair or replace any part of the
freezer for servicing without first contacting the So-Low Service Department.
SAVE THESE INSTRUCTIONS

♦
● MEANING OF ILLUSTRATED SYMBOLS…………………………………...
● STARTING INSTRUCTIONS…………………………………………………..
♦
● PRE-INSTALLATION INFORMATION………………………………………...
♦
● FREEZER STORAGE PROCEDURE……………………………………..….
● ALARM BATTERY REPLACEMENT…...……………………………………..
● CLEANING PROCEDURE……………………………………………………..
● DEFROSTING PROCEDURE………………………………………………….
● CLEANING AIR CONDENSER………………………………………………...
♦
● CHANGING SETPOINT / OPERATION TEMPERATURE………….………
♦
● ALARM SYSTEM………………………………………………………………..
8
● DRY CONTACT RELAY………………………………………………………..
8
♦
● CONTROL KEYS & DISPLAYS………………………………………………..
9
● CONTROL DISPLAY VALUES………………………………………………...
10
● DATA DOWNLOAD VIA USB..………………………………………………...
11
● DATA UNLOCK MODE…………...…………………………………………….
12
● TEMPERATURE SCALE ADJUSTMENT…………………………..………...
13
● CALIBRATION PROCEDURE…………...…………………………..………...
14
♦
♦
♦
♦ MAINTENANCE CHECKLIST
♦ DIAGRAMS

Various symbols are used in this safety manual in order to use the unit without
danger of injury and damage of the unit. Be sure that you understand the
warnings and cautions in this manual before operating the unit.
CAUTION
BLACK WITH YELLOW BACKGROUND
LIGHTNING BOLT
CAUTION, RISK OF ELECTRICAL SHOCK
WARNING
BLACK WITH YELLOW BACKGROUND
EXCLAMATION POINT
CAUTION, REFER TO ACCOMPANYING DOCUMENTS

WARNING
DURING OPERATION THIS UNIT MUST REMAIN IN UPRIGHT
POSITION. DURING TRANSPORATION UNIT MUST NOT BE
TIPPED MORE THAN 45° FROM UPRIGHT POSITION.
CAUTION
UNPLUG UNIT AND SWITCH OFF ELECTRICAL BREAKER
BEFORE ANY TECHNICAL SERVICE IS PERFORMED.
CAUTION
COVERS ON BACK / SIDE OF FREEZER MAY ONLY BE
REMOVED BY AUTHORIZED PERSONNEL. FAILURE TO
RE-INSTALL COVER COULD RESULT IN HAZARD.
CAUTION
UNIT MUST BE OPERATED ON A DEDICATED ELECTRICAL
LINE. USING A NON-DEDICATED LINE MAY RESULT IN UNIT
STARTUP FAILURE.
CAUTION
ONLY PLUG THIS UNIT INTO THE PROPER OUTLET. DO
NOT ATTEMPT TO MODIFY PLUG IN ANY WAY. IMPROPER
USE OF THE ELECTRICAL PLUG WILL VOID WARRANTY.
WARNING
DO NOT POSITION EQUIPMENT SO IT IS DIFFICULT TO
DISCONNECT FROM THE POWER SUPPLY.

ATTENTION
RISK OF ELECTRICAL SHOCK
USE CAUTION NEAR ELECTRICAL CONNECTIONS
NOTICE

NOTICE
THE LO-BAT (LOW BATTERY ALARM) IS NOT ABLE TO BE
SILENCED OR DISABLED.
TO REDUCE THE VOLUME OF THE ALARM UNTIL A
REPLACEMENT CAN BE INSTALLED, A PIECE OF TAPE CAN
BE PLACED OVER THE BUZZER HOLE ON THE CONTROL
CAUTION
DISCONNECT THIS UNIT FROM THE POWER SUPPLY
BEFORE PERFORMING MAINTENANCE ON THE UNIT.

ATTENTION
FOR UPRIGHT UNITS, IT IS IMPORTANT TO PROTECT THE
CONTROL FROM DRIPPING WATER. PLACE A CLOTH OR
TOWEL ON THE LEADING EDGE OF THE COOLING
CHAMBER ABOVE THE CONTROL TO DEFLECT / ABSORB
WATER THAT COULD DRAIN ONTO THE CONTROL.
ATTENTION
IT IS RECOMMENDED TO SLOWLY RE-ADD YOUR
PRODUCT INTO THE FREEZER TO PREVENT AN
EXTREME LOAD ON THE COMPRESSORS, WHICH
COULD SHORTEN FREEZER LIFE EXPECTANCY.

ATTENTION
IT IS RECOMMENDED TO CLEAN THE
CONDENSER AT LEAST ONCE EVERY
90 DAYS TO PREVENT DUST BUILDUP.

WARNING
CHANGING THE CONTROL PARAMETERS OUTSIDE OF
THE MANUFACTURE RECOMMENDED RANGE, COULD
SHORTEN THE LIFE-SPAN OF YOUR EQUIPMENT; OR
CAUSE ISSUES RESULTING IN MECHANICAL FAILURE.

•
ATTENTION
THE BATTERY DOES NOT POWER THE COOLING SYSTEM.
WARNING
IF IT IS NECESSARY TO REMOVE METAL COVER SCREEN
ON BACK OF FREEZER TO MAKE CONNECTIONS TO
ALARM RELAY, COVER MUST BE REPLACED BEFORE
FREEZER IS PUT INTO OPERATION

WARNING
DO NOT USE ANY SHARP OR METAL OBJECTS ON THE
TOUCH SCREEN AS THEY MAY DAMAGE THE SURFACE.
ALSO BE SURE THAT HANDS AND FINGERS ARE FREE
FROM OILS OR CHEMICALS WHICH MAY MAR THE
SURFACE OF THE TOUCH SCREEN
Icon Bar
Main Display

ICON
NAME
ICON
DESCRIPTION
ATTENTION
LOADING TIME MAY REQUIRE SEVERAL SECONDS
BEFORE INFORMATION IS DISPLAYED. RAPIDLY
PRESSING ICONS MAY RESULT IN PARAMETERS
BEING INCORRECTLY CHANGED UNINTENTIONALLY.

STEP
DESCRIPTION
ICON
INSTRUCTIONS
1
2
3
4
5
6
7
WARNING
DO NOT ATTEMPT TO REMOVE THE HARD DRIVE FROM
THE DEVICE, AS DOING SO CAN RESULT IN DATA LOSS.
WARNING
DO NOT ATTEMPT TO REMOVE THE SD CARD FROM THE
DEVICE, AS DOING SO CAN RESULT IN DATA LOSS.

1
2
3
4
ATTENTION
WHEN THE DATA SETTING IS TURNED OFF (DARK GREEN
ICON), TEMPERATURE DATA WILL NOT BE RECORDED.
OPERATING SYSTEM
THE NCOMPASS CONTROL USES A CUSTOM WINDOWS CE
BASED SOFTWARE STORED ON AN INTERNAL HARD DRIVE
INSIDE THE DEVICE. FUTURE DESIGN CONTROLS
WINDOWS CE BASED NCOMPASS DISPLAY AND CONTROL
MODULE (IDEC PLC) SOFTWARE (LISTED AS “SOFTWARE”
IN THIS DOCUMENT) IS PROTECTED BY COPYRIGHT LAWS
AND INTERNATIONAL COPYRIGHT TREATIES, AS WELL AS
OTHER INTELLECTUAL PROPERTY LAWS AND TREATIES.
ALL OWNERSHIP AND RIGHTS REMAIN WITH FUTURE
DESIGN CONTROLS. THE NCOMPASS CONTROL DOES NOT
RECEIVE SOFTWARE UPDATES THOUGH THE INTERNET,
OR OTHER MEANS.
TO REMOVE USER DATA FROM THE DEVICE, PLEASE
CONTACT FUTURE DESIGN CONTROLS, INC. (888-751-5444)

STEP
DESCRIPTION
ICON
INSTRUCTIONS
1
2
3
4
5
6
7
8
9
10
OPERATING SYSTEM
ONCE THE TEMPERATURE SCALE HAS BEEN CHANGED,
ALL PAST AND FUTURE TEMPERATURE DATA WILL BE
CONVERTED INTO THE SELECTED TEMPERATURE SCALE.

STEP
DESCRIPTION
ICON
INSTRUCTIONS
1
2
3
4
5
6
7
8
9
10
11
OPERATING SYSTEM
IMPROPER USE OF CALIBRATION CAN CAUSE FREEZER
TEMPERATURE INACCURACIES AND FLUCTUATIONS.

Q:
•
•
•
•
•
•

COMPRESSOR MODEL
HP
VOLTAGE
HERTZ
PHASE
PART #
TECUMSEH AJB2433ZXA
1
115
50/60
1
AJB24-115
TECUMSEH AJB2433ZXD
1
208/220/230
50/60
1
AJB24-208
EMBRACO FFI12HBX
1
/
3
115
50/60
1
FF12-115
DANFOSS SC15FTX
1
/
3
115
50/60
1
SC15-115
DANFOSS SC18FTX
1
/
2
208/220/230
50/60
1
SC15-208
TEMPERATURE CONTROL PARTS
PART #
FDC nCOMPASS
nCOMPASS
CASCADE ELECTRICAL PARTS
PART #
Heater Harness No. H-200
217-VOLTAGE
Refrigeration Switch No. 2X464
TOGGLE
Condenser Fan Motor No. GE-5411 - 115/60/1
500-115
Condenser Fan Motor No. GE-5421 - 230/50-60/1
500-VOLTAGE
Electrical Cord No. 8-3 (Please Specify Voltage)
PWRCRD-VOLTAGE
Control Board No. CECB2TUV (Please Specify Voltage)
231-VOLTAGE
REFRIGERATION HIGH STAGE PARTS
PART #
Air Cooled Condenser No. 3CZ0602B
254
Drier No. C-053-S
256H
Capillary Tube
HS-17, HS-20
Oil Separator, Temprite Series 900 (If Applicable)
900
REFRIGERATION LOW STAGE PARTS
PART #
Pressure Control No. 20PS01-0039
259
Receiver Condenser
RCN-LS
Drier No. CO-52S-S
256L
Capillary Tube
LS-28, LS-31
Oil Separator, Temprite Series 900 (If Applicable)
900
HARDWARE PARTS
PART #
Latch No. METL-L1-99
REX37L1-3
Chest Hinge
59-928M
Upright Hinge No. Polar 109-LH
59-928U
Cabinet Gasket
NX504B1
Lid or Door Gasket
PSOS
Grill No. 650H
356F, 356S
Sub-Lids (Must have Model Number)
SL-MODEL NUMBER
Inner Door (Must have Model & Serial Number)
357-MODEL NUMBER-SERIAL NUMBER
Clips & Rollers for Inner Doors (Quantity 10 minimum)
405
Shelves for Freezer (Must have Model Number)
4015-MODEL NUMBER

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