Environment Equipment Co., Inc.

10310 Spartan Dr., Cincinnati, Ohio 45215 USA
(513) 772-9410   e-mail:sales@so-low.com
Fax (513) 772-0570http://www.so-low.com

ENGINEERS AND MANUFACTURERS OF ULTRA-LOW FREEZERS

INSTRUCTIONS: SINGLE STAGE FREEZER

1.1 RANGE OF ENVIRONMENTAL CONDITIONS FOR WHICH THIS EQUIPMENT IS

DESIGNED

1. Indoor use.
2. Altitude up to 2000m.
3. Temperatures 15°C to 32°C ( 60°F TO 85°F )
4. Recommended humidity range of 30% to 90%.
5. Mains supply fluctuations up to -5% to +10% of the nominal voltage.
6. Transient overvoltages typically present on the mains supply (overvoltage category II). Pollution degree 1.

CAUTION! THIS FREEZER IS PROVIDED WITH AN INPUT CIRCUIT PROTECTIVE DEVICE WHICH SHALL BE MAINTAINED AND SERVICED BY QUALIFIED PERSONNEL ONLY.
FUSES OR BREAKERS USED INSIDE PROTECTIVE DEVICE
15A OR 20A 250V TIME DELAY

WARNING! UPLUG FREEZER BEFORE ANY TECHNICAL SERVICE IS PREFORMED ON THE UNIT!

CAUTION! DO NOT POSITION EQUIPMENT SO IT IS DIFFICULT TO DISCONNECT FROM THE POWER SUPPLY.

1.2 STARTING INSTRUCTIONS

1. Plug the freezer into the proper outlet with an adequate power supply.
2. Confirm the freezer has at least 6″ of air space on each side, for air circulation.
3. Turn the refrigeration switch (located in back of unit) to the ON position (if applicable).
4. The compressor(s) will start to operate and pull down to the set point on the temperature control.
5. When the freezer reaches the set point, the compressor(s) will cycle on and off to maintain the set point desired by the user on the temperature control.

1.3 CLEANING PROCEDURE

1. Wipe down the exterior of the freezer with a soft cloth and spray type polish.
2. If frost builds up in the chamber, a bucket and ice-scraper can be used to remove the ice.
   If excessive ice builds up, the unit can be defrosted (see below).

1.4 DEFROST PROCEDURE

1. Remove any product in the freezer and store it in a back-up freezer or elsewhere.

2. Unplug the freezer, and open the freezer front door / lid.
   For upright units, use a cloth to protect the control from dripping water.

3. Air out the freezer for at least 12 hours, allowing the unit to reach room temperature.

4. Take a rag and wipe up all the excess water in the unit (melted frost).

5. Plug the unit in and set your temperature to the desired setpoint

6. Once the desired temperature is reached, add product back into the unit.

NOTE: 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.

1.5 AUTOMATIC STARTING SYSTEM

The automatic starting system is provided on all freezer systems in case of power failure.
If there is an electrical power interruption to the unit and power is not restored immediately, the unit will automatically start up whenever power is returned.

ATTENTION: Always leave the refrigeration switch in ON position, as this will automatically activate the automatic starting system.

Single Stage

After power restoration, the single stage will start to operate and begin to pull down to setpoint temperature.

CAUTION! COVER SCREEN ON BACK OF FREEZER TO BE REMOVED BY AUTHORIZED PERSONNEL ONLY. FOR CONNECTIONS TO THE EXTERNAL ALARM COVER SCREEN MUST BE REPLACED BEFORE PUTTING FREEZER INTO SERVICE. FAILURE TO REINSTALL COVER COULD RESULT IN HAZARD.

1.6 WARNING SYMBOLS

| BLACK WITH YELLOW BACKGROUND| LIGHTNING BOLT| CAUTION: RISK OF ELECTRICAL SHOCK
---|---|---|---
| BLACK WITH YELLOW BACKGROUND| EXCLIMATION POINT|

CAUTION: REFER TO ACCOMPANYING DOCUMENTS

1.7 TEMPERATURE CONTROL

The temperature control is manually adjustable to the desired temperature in 1° C increments within the limits of the control range.

WARNING
Unauthorized entry into this control will void warranty.

PARTLOW NO. 1160, FDC 4100, FDC 4000
ELECTRONIC CONTROL

NOTE: USE ONLY THE “UP” AND “DOWN” KEYS WHEN MAKING CHANGES ON THIS CONTROL.
WARRANTY WILL BE VOID IF USED IN ANY OTHER WAY. CONTACT FACTORY FOR ALL OTHER ADJUSTMENTS IN SETTINGS.

TEMPERATURE SET POINT: The control has two displays, the upper display is the actual chamber temperature and the lower display is the temperature set point. The temperature set point has been preset at the factory.

CHANGING TEMPERATURE SET POINT: The temperature set point can be changed by simply pressing the “up” arrow to raise or the “down” arrow to lower the temperature set point.

1.8 ALARM SYSTEM

MODEL

|

OPERATION INSTRUCTIONS

---|---
FDC 4000| Alarm will automatically activate when the freezer reaches set point or 8 hours after the unit has been first plugged in.
FDC 4100| Manually activate the alarm by moving the toggle switch to the on position once the freezer reaches setpoint.
PARTLOW 1160| Manually activate the alarm by moving the toggle switch to the on position once the freezer reaches setpoint.

The alarm will not sound again until the temperature varies 12°C (20°F) from the temperature control set point. Please note that the alarm will sound if there is a power outage to the freezer.

Alarm system should be tested every 30 days.

• Non-rechargeable batteries should be changed approximately every two years.
• Rechargeable batteries should be changed approximately every three years with lead acid rechargeable 1.2 Ah min, model PS-640F1 or equivalent.

1.9 ALARM BATTERY TESTING

If applicable, the alarm switch has a test position that can be used anytime to see if the battery is charged or if the buzzer is working properly.

OPTIONAL EQUIPMENT -­ DRY CONTACT ALARM RELAY
Located on the back of the freezer is a terminal strip marked ALARM RELAY CONTACTS. Rating of this connection:

ALARM RELAY CONTACTS CONNECTION RATING

PARTLOW 1160| FDC 4100|

FDC 4000

10A 250VAC

| 10A 250VAC| 2A 125 VAC
10A 30VDC| 10A 30VDC|

2A 30 VDC

RED -­ NORMALLY CLOSED
WHITE -­ COMMON
BLUE -­ NORMALLY OPEN

CAUTION! 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

FDC 4100 CONTROL

1. SCROLL BUTTON
2. USE ARROW KEYS TO CHANGE SETPOINT TEMPERATURE
3. RETURN TO MENU (AT ANY TIME)

USER MODE

• To enter USER MODE; Press and Release the scroll key .
• To page through user mode Parameters; Press and Release the scroll key .

1. Press and Release scroll once.

2. Press and Release scroll twice.

3. SP3 = 11
   ALARM DIFFERENTIAL

4. SHiF
   CALIBRATION

PROGRAM MODE

• To enter PROGRAM MODE; Press and HOLD the scroll key   until SET shows up.
• To page through user mode Parameters; Press and Release the scroll key  .
• To adjust parameter SETTINGS; Press the up and down keys .

|

PARAMETER

| SETTING|

DESCRIPTION / NOTATION

---|---|---|---
HOLD SCROLL TO ENTER MODE

|

SET

|

—-

|
PRESS SCROLL

|

LOCK

| NONE| Change to “ ALL ” to Lock-Out setpoint
| INPT|

t_tc

|
|

Unit

| °C or (°F)| Temperature Scale
| DP|

NO.DP

|
|

SPLL

| -100°C (-150°F)| Single Stage Unit Setting is -67°C (-67°F)
| SPIH| -40°C (-40°F)|

Single Stage Unit Setting is 0°C (32°F)

|

NOTE: The SPLL and SPIH parameters automatically change between °C and °F when this setting is changed in the UNIT parameter.

|

SHIF

| ??| Calibration
| FILT|

0.5

|
|

PB

| 0.0
| OUT1|

DIRT

|

O1.TY

| RELY
| O1.FT|

ON

|

O1.HY

| 1.5| Change to 1.0 or 0.7 Hysteresis to tighten cycle
| RAMP|

NONE

|
|

OUT2

| NONE
| AL.FN|

Db.Hi

|

AL.ND

| NORM
| AL.FT|

OFF

|

CONN

| NONE
| SEL1|

SHIF

Table A.1 Error Codes and Corrective Actions

Error Code

| Display Symbol| Error Description|

Corrective Action

---|---|---|---

4

| | Illegal setup values been used: Before COOL is used for OUT2, DIRT (cooling action) has already been used for OUT1, or PID mode is not used for OUT1 ( that is PB = 0, and / or TI = 0 )| Check and correct setup values of OUT2, PB, TI and OUT1. IF OUT2 is required for cooling control, the control should use PID mode ( PB ≠ 0, TI ≠ 0 ) andOUT1 should use reverse mode (heating action) , otherwise, don’t use OUT2 for cooling control.

10

| | Communication error: bad function code| Correct the communication software to meet the protocol requirements.

11

| | Communication error: register address out of range| Don’t issue an over- range register address to the slave.

14

| | Communication error: attempt to write a read-only data or a protected data| Don’t write a read-only data or a protected data to the slave.

15

| | Communication error: write a value which is out of range to a register| Don’t write an over-range data to the slave register.

26

| | Fail to perform auto-tuning function|

1. The PID values obtained after auto-tuning procedure are out of range. Retry auto-tuning.
2. Don’t change set point value during auto-tuning procedure.
3. Use manual tuning instead of auto-tuning.
4. Don’t set a zero value for TI.
5. Don’t set a zero value for PB.
6. Touch RESET key

29

| | EEPROM can’t be written correctly| Return to factory for repair.

30

| | Cold junction compensation for thermocouple malfunction| Return to factory for repair.

39

| | Input sensor break, or input current below 1 mA if 4-20 mA is selected, or input voltage below 0.25V if 1 – 5V is selected| Replace input sensor.

40

| | A to D converter or related component(s) malfunction| Return to factory for repair.

FIGURE 2.4

REAR TERMINAL CONNECTION FOR FDC-4100

A.C. POWER

1 ­ BLACK

2 ­ BLACK (230V) / WHITE (115V)

CONTROL REFRIGERATION SWITCH

3 ­ BLUE OR RED (SINGLE STAGE)

4 ­ BLUE OR RED

ALARM CIRCUIT

7 ­ YELLOW

8 ­ ORANGE

THERMOCOUPLE (Type “T”)

19 ­ BLUE ( COPPER )

20 ­ RED ( SILVER )

1. FUSE OR CIRCUIT BREAKER

2. RECORDER (OPTIONAL)

3. HEATER HARNESS (IF APPLICABLE)

4. PARTLOW 1160 OR FDC 4100

5. TO ALARM

6. SWITCH (IF APPLICABLE)

7. RELAY
   (MAY VARY)

8. FAN(S) (IF APPLICABLE

9. COMPRESSOR

1160 / 4100 SS 115 VOLT

COLOR CODE CHART

YELLOW = Y
ORANGE = O
BLUE   = B
RED    = R
WHITE  = W
GREEN  = G
BLACK  = BK
GREEN YELLOW = GY

5-2010

1. FUSE OR CIRCUIT BREAKER

2. RECORDER (OPTIONAL)

3. HEATER HARNESS (IF APPLICABLE)

4. PARTLOW 1160 OR FDC 4100

5. TO ALARM

6. SWITCH (IF APPLICABLE)

7. RELAY
   (MAY VARY)

8. FAN(S) (IF APPLICABLE

9. COMPRESSOR

1160 – 4100 SS 230 VOLT

COLOR CODE CHART

YELLOW = Y
ORANGE = O
BLUE   = B
RED    = R
WHITE  = W
GREEN  = G
BLACK  = BK
GREEN YELLOW = GY

5-2010

REFRIGERANT FLOW CHART

1. EVAPORATOR

2. CAPILLARY TUBE

3. DRIER

4. HEAT EXCHANGER

5. HIGH SIDE VALVE (IF APPLICABLE)

6. OIL SEPARATOR
   (IF APPLICABLE)

7. COMPRESSOR

8. LOW SIDE VALVE

9. AIR COOLED CONDENSER

FLSS

PARTLOW 1160 / FDC4100

1. ALARM LIGHT
2. BUZZER
3. POWER FAILURE RELAY
4. ON CONTROL BOARD
5. TEMPERATURE CONTROLLER
6. TYPE T T/C
7. (IF APPLICABLE)
8. DRY CONTACTS
9. 6 V0LT OUTPUT
10. BATTERY

COLOR CODE CHART

ORANGE = O
BLACK  = BK
BLUE   = B
RED    = R
WHITE  = W
YELLOW = Y

ALARM 1160 4100 4-19-2010

SS REFRIGERATION & HARDWARE PARTS LIST

TO ENSURE YOU ARE PROVIDED THE CORRECT PARTS, THE MODEL AND SERIAL NUMBER OF YOUR UNIT MUST BE PROVIDED WHEN ORDERING.

COMPRESSOR MODEL

| HP| VOLTAGE| HERTZ| PHASE| SO-LOW PART #
---|---|---|---|---|---
TECUMSEH AJB2433ZXA| 1| 115| 50/60| 1|

AJB24-115

TECUMSEH AJB2433ZXD

| 1| 208/220/230| 50/60| 1| AJB24-208
EMBRACO FFI12HBX| ½| 115| 50/60| 1|

FF12-115

DANFOSS SC15FTX

| 1/3| 115| 50/60| 1| SC15-115
DANFOSS SC18FTX| ½| 208/220/230| 50/60| 1|

SC15-208

TEMPERATURE CONTROL PARTS

|

SO-LOW PART #

---|---
FDC 4100| 4100
FDC 4000| 4000
FDC nCOMPASS| nCOMPASS

CASCADE ELECTRICAL PARTS

|

SO-LOW 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 PARTS

|

SO-LOW PART #

---|---
Air Cooled Condenser No. 3CZ0602B| 254
Heat Exchanger, No. HE-502| HX-SS
Drier No. C-052-S| 256L
Capillary Tube No. CT-502| SSC-23
Oil Separator, Temprite Series 900 (If Applicable)| 900

HARDWARE PARTS

|

SO-LOW 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

Documents / Resources

| SO- LOW FDC 4000 Single Stage Freezer [pdf] Instructions
FDC 4000, FDC 4000 Single Stage Freezer, Single Stage Freezer, Freezer
---|---

Read User Manual Online (PDF format)

Download This Manual (PDF format)

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