SO-LOW PC85 Series Ultra Low Freezer User Manual

PC85 Series Ultra Low Freezer

Product Information

The product is a freezer that must be used with caution to
reduce the risk of fire, electric shock, or injury to persons. The
user manual contains safety instructions and symbols that must be
understood before operating the unit. The unit must not be modified
in any way, and it must be positioned at least 6 inches away from
any wall or object on any side. Any repair or replacement of the
freezer must be done by authorized personnel. The manual also
contains instructions for pre-installation, freezer storage, alarm
battery replacement, cleaning, defrosting, and changing
setpoint/operation temperature. The unit must operate on a
dedicated electrical line and only plugged into the proper outlet.
Failure to follow these instructions may result in hazard and void
warranty.

Product Usage Instructions

Before using the freezer, read all instructions in the user
manual and follow basic safety precautions:

• Do not modify the plug provided with the freezer.

• Ensure that the unit is positioned at least 6 inches away from
  any wall or object on any side.

• Do not attempt to repair or replace any part of the freezer
  without first contacting the So-Low Service Department.

• Operate the unit on a dedicated electrical line and only plug
  it into the proper outlet.

• Do not position equipment so it is difficult to disconnect from
  the power supply.

The user manual also contains instructions for pre-installation,
freezer storage, alarm battery replacement, cleaning, defrosting,
and changing setpoint/operation temperature. Follow these
instructions carefully to prevent damage to the unit and ensure
optimal performance.

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 USER PARAMETER MODE…………………………………………………… 10 PROGRAM PARAMETER MODE……………………………………………. 11 CALIBRATION PROCEDURE………………………………………………… 12
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.

TEMP -888
SET -888
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.
WARNING
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.

·
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

TEMP -888
SET -888

TOUCH KEYS
Pressing key while in normal control
mode Press both keys
simultaneously Press both keys
simultaneously

FUNCTION Up Key
Down Key
Scroll Key
Current Power Reading
Alarm Test

DESCRIPTION
Press and release to increase the control set-point (while in normal control mode) or to change lower display program parameter (while in User Menu or Factory Mode). Press and hold to accelerate increment speed.
Press and release to decrease the control set-point (while in normal control mode) or to change lower display program parameter (while in User Menu or Factory Mode). Press and hold to accelerate decrement speed.
Press and hold for at least 2 seconds and release (while in normal control mode) to access operator level parameters. Press and release to cycle through all user parameters. Press and hold for 2 seconds and release to silence audible alarm under normal power or on battery power. While unit is in an alarm condition, the external alarm relay contacts will remain energized until the alarm condition no longer exists. Press and hold to display chamber temperature while the controller is on battery power. Chamber temperature will be displayed until key is released. Alarm contact will remain energized while operating on battery power.
Displays current AC power (i.e. 110VAC) as long as keys are pressed. If power is 110VAC or 220VAC, unit will display 110. Mode is only active during normal control mode (when top display = PV, Lower display = SP). N/A on battery power.
Energize audible alarm and alarm relay output as long as keys are pressed. Mode is only active during normal control mode (when top display = PV, Lower display = SP). N/A on battery power.

AAEE I I NnSSX

BbFF J J OoT t Yy

CCGGK Y P PUu Z

C c HHL L Q

Vu ? ?

D d h hMNR r W

= =

: Confused Character

To enter the user parameter mode, hold the Scroll Button for 2 seconds and release.
To make changes in the user parameter mode, press the up or down arrows.
To exit the user parameter mode, press and release the Scroll Button.

To page through Parameters; Press and Release the scroll key
Please read the superscript instructions (bottom of page) for each Parameter value.

THE FOLLOWING VALUES WERE SET WHEN THIS UNIT WAS SHIPPED

PARAMETERS
SPL 3 SPH 3 Al 2 INV 1 SHF 1 ASP 1 AHY 3,1 OHY 3,1 RB 1 DoR 4 SP 2 IN2 4

DESCRIPTION
Lower Setpoint Upper Setpoint
Alarm Temperature Scale
Calibration Alarm Differential Alarm Hysteresis Output Hysteresis Alarm Delay in Minutes
Door Alarm Setpoint N / A

°F -148 -40
°F
22 1.8 3.6

°C

ON

-100

-40

X

°C

12 1.0 2.0 30

X N / A

OFF X X
X X X X X X X

Table 4.1 Common Failure Causes and Corrective Actions

Error Code

Error Description

Corrective Action

Button on keypad collapsed or stuck.

Replace keypad.

Error reading/writing to non-volatile memory. Upscale sensor break.

Replace EEPROM (requires returning unit to the factory for service). Check sensor connections, verify output of sensor is valid.

Table 4.2 Error Codes and Corrective Actions

5-1 Controller Specifications

Power Requirements
Main: 12VAC (420mA), 5VA Max. Battery Back-up: 6 VDC (Lead Acid Re-chargeable, 1.2Ah min.) Battery Charge Current: < 400mA

Accuracy
+/- 1 Digit
Input #1
Type “T” Thermocouple or Platinum 100 Ohm RTD (0.00385 Ohms/Ohm/ºC)

Input #2
Type “T” Thermocouple

Input Type Range Low
Range High

PT.100 -230 ºC (-382 ºF) 400 ºC (752 ºF)

Type “T” TC -250 ºC (-418 ºF) 300 ºC (572 ºF)

Table 5.1 Input Ranges

User Interface
Dual 4-Digit LED Displays: Upper Display 0.55″ (14mm) Lower Display 0.40″ (10mm) Keypad (3 touch keys)
Overall Dimensions
6-1/4″ x 8-1/2″ (158.75mm x 215.90mm)
Environmental
Operating Temp: 0 to +60ºC Storage Temp: -40 to +60º Humidity: 0 to 90% RH (non-condensing)
Approvals
UL / CUL / CE Pending
Backup Battery Life
70 hours using 6VDC, 1.2A rechargeable battery

Sensor Break Detection
Sensor open for TC or RTD
Sensor Break Response Time
< 4 seconds for TC or RTD
Control Mode
Control Output: Direct (Cooling) On/Off with adjustable set-point and hysteresis.
Alarm Output: Programmable Deadband with adjustable hysteresis.
Control and Alarm Output
DPDT Relay, 2A @ 30 VDC, 2A @ 125 VAC, 1A @ 230VAC (all resistive loads)

Press and Release the scroll key to page through Parameters.
Once value SHF is shown, Use the or arrow keys to change value to ON.

PARAMETERS
SPL 3 SPH 3 Al 2 INV 1 SHF 1

DESCRIPTION

°F

°C

ON OFF

Lower Setpoint

Upper Setpoint

Alarm

Temperature Scale

Calibration

X

·
· ·

Q:
· · · · · ·

COMPRESSOR MODEL HP

TECUMSEH AJB2433ZXA 1

TECUMSEH AJB2433ZXD 1

EMBRACO FFI12HBX 1/3

DANFOSS SC15FTX

1/3

DANFOSS SC18FTX

1/2

VOLTAGE 115
208/220/230 115 115
208/220/230

HERTZ 50/60 50/60 50/60 50/60 50/60

PHASE 1 1 1 1 1

PART #
AJB24-115 AJB24-208 FF12-115 SC15-115 SC15-208

TEMPERATURE CONTROL PARTS FDC 4000 FDC nCOMPASS

4000 nCOMPASS

PART #

CASCADE ELECTRICAL PARTS Heater Harness No. H-200 Refrigeration Switch No. 2X464 Condenser Fan Motor No. GE-5411 – 115/60/1 Condenser Fan Motor No. GE-5421 – 230/50-60/1 Electrical Cord No. 8-3 (Please Specify Voltage) Control Board No. CECB2TUV (Please Specify Voltage)

PART #
217-VOLTAGE TOGGLE 500-115 500-VOLTAGE PWRCRD-VOLTAGE 231-VOLTAGE

REFRIGERATION HIGH STAGE PARTS Air Cooled Condenser No. 3CZ0602B Drier No. C-053-S Capillary Tube Oil Separator, Temprite Series 900 (If Applicable)

254 256H HS-17, HS-20 900

PART #

REFRIGERATION LOW STAGE PARTS Pressure Control No. 20PS01-0039 Receiver Condenser Drier No. CO-52S-S Capillary Tube Oil Separator, Temprite Series 900 (If Applicable)

259 RCN-LS 256L LS-28, LS-31 900

PART #

HARDWARE PARTS Latch No. METL-L1-99 Chest Hinge Upright Hinge No. Polar 109-LH Cabinet Gasket Lid or Door Gasket Grill No. 650H Sub-Lids (Must have Model Number) Inner Door (Must have Model & Serial Number) Clips & Rollers for Inner Doors (Quantity 10 minimum) Shelves for Freezer (Must have Model Number)

PART #
REX37L1-3 59-928M 59-928U NX504B1 PSOS 356F, 356S SL-MODEL NUMBER 357-MODEL NUMBER-SERIAL NUMBER 405 4015-MODEL NUMBER

WARNING
IF FAILURE OCCURS AND UNIT IS STILL UNDER WARRANTY, DO NOT ATTEMPT TO MAKE ANY REPAIR MODIFICATIONS TO THE UNIT BEFORE CONTACTING THE SO-LOW SERVICE DEPARTMENT, AS THIS MAY RESULT IN WARRANTY BEING VOIDED.

BK
B R

HIGH STAGE

LOW STAGE

BK

REFRIG. SWITCH

R

R

PRESSURE SWITCH

R

R

B B

FDC4000

TC INPUT

TO RECHARGEABLE BATTERY

+ – 6.8VDC 12V AC

CIRCUIT BREAKER

BK

R

G

W

BK

R B

BK TRANSFORMER

(IF APPLICABLE)

W

BK

R

B
BK

HEATER(S)
NOTE: ACCESSORIES ARE CONNECTED TO AC TERMINAL STRIP
ELECTRICAL DIAGRAM 208-230 VOLTS, 50/60 HERTZ, 1 PHASE

COND. FAN(S)

BK BK
GY
TEMP. REC. (IF APPLICABLE)

OO
TRANSFORMER
BK BK
FDC-4000 CIRCUIT BREAKER CBG230
COLOR CODE CHART
YELLOW = Y ORANGE = O BLUE = B RED = R WHITE = W GREEN = G
GREEN/YELLOW = GY
BLACK = BK
10-1-2008

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