Farrar Scientific ULC Series User manual

Model ULC Series
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ULC Series
ULTRA LOW STORAGE CHAMBER

Model ULC Series
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Revision Description Approval Date
a Original release JL 24 Apr 2020
b Updated water connection size JL 16 Jul 2020
09022020_a Updated with additional specs per NRTL inspection
requests TS 02 Sep 2020
09032020_b Added a maximum RH value to the spec TS 03 Sep 2020
09032020_c Revised warranty JL 03 Sep 2020
12042020_d Added 32 amp mains breakers for 50Hz models JL 04 Dec 2020
02172021_e Corrected shelving specifications JL 17 Feb 2021
03192021_f Corrected Exterior Dimensions JL 19 Mar 2021
04162021_g Enhanced chamber defrost. Section 11 JL 16 APR 2021
06012021_h Changed pictures to illustrations. Various sections JL 01 JUN 2021
07292021_i Add Maintenance security level to User Accounts JL 29 JUL 2021

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Read This Instruction Manual
Failure to read, understand and follow the instructions in this manual may result in damage to the unit, injury
to operating personnel, and poor equipment performance.
CAUTION! All internal adjustments and maintenance must be performed by qualified service
personnel.
When plugged in, there is high voltage present on terminals inside the machine space. Proper care
must be taken if the electrical control panels are opened to perform any kind of maintenance.
The material in this manual is for information purposes only. The contents and the product it describes are
subject to change without notice. Farrar Scientific makes no representations or warranties with respect to this
manual. In no event shall Farrar Scientific be held liable for any damages, direct or incidental, arising out of
or related to the use of this manual.
Important operating and/or maintenance instructions. Read the accompanying text carefully.
Equipment being maintained or serviced must be turned off and locked off to prevent possible injury
Always dissipate high or low temperatures, especially inside of the control space
before performing any maintenance on the unit.
Always use the proper protective equipment (clothing, gloves, goggles, etc.)
Always dissipate extreme cold or heat and wear protective clothing.
Always follow good hygiene practices.
Each individual is responsible for his or her own safety.
For any questions or concerns, please contact the manufacturer:
Farrar Scientific, Inc.
30765 State Route 7
Marietta, Ohio, USA 45750
Phone: [phone]

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-80C ULC Series Instruction Manual
Table of Contents
1. Receiving ..................................................................................................
2. Introduction ...............................................................................................
3. Specifications ...........................................................................................
4. Installation Requirements .........................................................................
5. Control System..........................................................................................
6. Operation ..................................................................................................
a. HomeScreen
b. SetupScreen
c. SystemHealthScreen
d. InformationScreen
e. Technical/ServiceScreen
f. ManagingUserAccounts
g. SettingSystemClock
7. Sensor Validation .....................................................................................
8. Alarms ......................................................................................................
9. External Access Ports ..............................................................................
10. Troubleshooting ........................................................................................
11. General Maintenance ...............................................................................
12. Factory Default Control Settings ...............................................................
13. Warranty - North America .........................................................................
14. Warranty - International ............................................................................
15. Contacting Farrar Scientific ......................................................................

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1.0 Receiving
1.1 Preliminary Inspection
This item was thoroughly inspected and carefully packed prior to shipment and all necessary precautions
were taken to ensure safe arrival. Immediately upon receipt, before the unit is moved from the receiving area,
carefully examine the shipment for loss or damage. Unpack the shipment and inspect both interior and exterior
for any in-transit damage.
1.2 Visible Loss or Damage
If any loss or damage is discovered, note any discrepancies on the delivery receipt and call the delivering
carrier and request that their representative perform an inspection. Do not discard any of the packing material
and do not move the shipment from the receiving area prior to their inspection. Document in writing and with
photos, for your records.
1.3 Responsibility for Shipping Damage
For products shipped FCA. Marietta, Ohio, the responsibility of Farrar Scientific ends when the merchandise
is loaded onto the carrier's vehicle. On FOB Destination shipments, Farrar Scientific’s and the carrier's
responsibility ends when your Receiving Department personnel sign a free and clear delivery receipt.
2.0 Introduction
The Farrar Scientific ULC/ULCi is a forced air low temperature long term storage freezer which can attain
interior chamber temperatures between -20°C to -80°C, depending on the model. The ULC Series chamber
consists of two (2) redundant cascade refrigeration systems. There are two (2) condensers, two (2)
evaporators, and a total of four (4) compressors. Both refrigeration systems are packaged type systems
(compressor, evaporator, condenser & circulating fan), resting on top of the chamber. The refrigeration
systems have separate electrical power supply via two (2) power cords including two (2) redundant LCD
controllers mounted onto each of the exterior doors. The ULC Series is not meant as a walk-in chamber, but
rather a shelved unit for long term storage of samples and/or product at temperature between -20°C to -80°C.
ULC Series offers a true fully redundant solution (refrigeration, displays, and controls). The LCD Display
information center enables users with access control to adjust the temperature control setpoint between -20°C
to -80°C, depending on the model. All functions and set points can be performed by accessing either LCD
display located on each of the exterior doors. Since the displays are synchronized any adjustments or set
point programmed on one of the LCD displays will automatically be synchronized on the other LCD display.
The ULC Series is delivered with factory default, therefore, we recommend proper access control assignment
to each user e.g. (User Name) from the facility Administrator or Operator to Users. If a user does not have
sufficient privilege or granted access control, then no set points or values can be changed within each of the
LCD display controllers; only warning acknowledgment. Without sufficient access privilege to controller
assigned by the Administrator, each LCD display will offer a view only mode to a non-authorized user. A User
Name/Password can be assigned and programmed by facility Administrator and the User Name/Password
should be maintained and controlled according to company protocols.

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The blower motor circulates airflow throughout the chamber and, should the temperature deviate for more
than +3°C from setpoint (adjustable), the controller is designed to automatically start both refrigeration
systems in order to reach and maintain temperature of control setpoint e.g. -70°C.The ULC Series controllers
are designed to properly maintain the temperature setpoint and automatically initiate an automatic defrost of
the evaporator coil for each refrigeration system. During the defrost period, the system blower motor will be
turned off specific to the refrigeration system (system A or system B) in defrost mode. The secondary
refrigeration system will operate and its blower motor will be energized to maintain proper temperature set
point within the chamber. Defrost cycles are factory programmed to be enabled every 12 hours. However, the
defrost cycles can be modified by the end user to occur every 2 to 168 hours, depending on the following:
ambient moisture, frequency of door openings and/or warm product being placed inside the ULC Series.
Farrar Scientific technical support team can assist users with any questions related to controller adjustments
and settings.
The ULC series internal blower motor will automatically turn off when either of the two exterior doors are
opened. Should one of the two exterior doors be opened, the Controller LCD will display a “warning” icon,
along with a “Yellow” light indicator on the light bar located in the top middle of both doors. Should the door
remain open for too long (user adjustable setting from 5 to 300 sec.) the Controller display will change from a
“Warning” to an “Alarm” condition, and the light bar will change from “Yellow” to “Red”, including an audible
alarm to notify local user of an alarm condition. Additional warming and alarm status items can be found in
Section 8 of this manual.
3.0 Specifications
ULC Series
Exterior Dimensions incl. refrigeration systems in / mm 122 x 60 x 150 / 3098 x 1524 x 3810 (W x D x H)
Exterior Dimensions- Chamber/latch only in / mm 122 x 60 x 102 / 3098 x 1524 x 2591 (W x D x H)
Interior Dimensions in / mm 110 x 38 x 90 / 2794 x 927 x 2286 (W x D x H)
Chamber Volume ft³ / l 199 / 5635
Stora
g
e Volume ft³ / l 190 / 5380
Chamber Floor Space ft² / m² 47 / 4.36
Door Opening in / mm -Qt
y
42 / 1067 W x 87/ 2210 H x 2 doo
r
Chamber Wall Thickness in / mm 6 / 152.4
Net Wei
g
h
t
lbs / k
g
3000 / 1360.8
A
mbient Conditions °C/%RH
18°C to 30°C / 70%RH Max
NOTE: FOR INDOOR USE ONLY
Pollution Degree 2
2" Box Capacit
y
Not Included Qt
y
2,880
3" Box Capacit
y
Not Included Qt
y
2,400
Inventor
y
Racks for 2" Boxes- Not Included Qt
y
96
Inventor
y
Racks for 3" Boxes- Not Included Qt
y
80
Vial Space- 2” / 3” Box Qt
y
288,000/ 240,000
Electrical
Electrical ULC/ ULCi V / Hz /Qty
208-230 VAC, 1 Ø, 60 Hz / 2,
230 VAC, 1 Ø, 50 Hz / 2
Mains Supply Fluctuation +/- 10%
Overvoltage Category II
Electrical breakers
A
mp/ Qt
y
30A, 60Hz. (32A, 50HZ)/ 2 Circuits;
Noise level dB
(
A
)
65

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Refrigeration Systems
Refrigeration System Qty 2
Scroll Compressors Qty 4
Blower Motor Cfm/ l/m 500 / 14,158
Blower Motor Qt
y
2
Thermal Room Load
Air Cooled
Water Cooled
BTU/ Kw
BTU/ Kw
14,500 BTU/hr / 4.25 kW/hr Maximum
< 1,550 BTU/Hr / 0.44 kW/h
r
Maximum
Refri
g
erant Hi
g
h Sta
g
e R- 449A (HFO)
Refri
g
eran
t
Low Sta
g
e R-290 & R-508B (HFC)
Construction
Chamber Exterior Material Painted Aluminum- White Embossed Finish
Chamber Interior Material Painted Aluminum- White Embossed Finish
Optional Shelving System information
Shelving Material Stainless Steel
Shelving Adjustment in / mm 1" Adjustment / 25
Shelvin
g
Size in / mm 54 x 36 / 1371.6 x 914.4 (W x D)
Shelf Weight Capacity lbs / kg 300 / 136
Load Capacit
y
per chamber side lbs / k
g
2,000 / 907 (4000/1814 total)
Performance
Temperature Control Range (ULC/ULCi)
Temperature Control Ran
g
e
(
ULC-WR, ULCi-WR
)
-40˚C to -80˚C @ 1˚C Increments
-20˚C to -80˚C @ 1˚C Increments
Temperature Minimum Set Point -80˚C
Temperature Pull Down Time From +20˚C to -80˚C within (4 Hours- 25 minutes)
Temperature Air Stability at -80˚C
at -20°C +/- 3˚C Uniformity
+/- 5C Uniformity
Cooling Assist Mode
If Air Temperature is > 3˚C from set point / Both
System A & System B Operational (User Adjustable)
Energy Consumption per cu. ft 0.33 kWh/ day per cu.ft.
Power failure warm up from -80˚C to -50˚C 6 Hours
Temperature recovery to -80˚C from 30 sec. door opening 25 Minutes (empty chamber)
Temperature recovery to -80˚C from 60 sec. door opening 35 Minutes (empty chamber)
Power Consumption
Average @ -80˚C Set Point
(one refrigeration system controlling chamber temperature)
2.62 kWh
Maximum @ -80˚C Set Point
(one refrigeration system controlling chamber temperature, one
system running a defrost cycle – average defrost cycle time 1.83 hr.)
6.74 kWh / 24hr.
Performance Cont.
24-hour power consumption - No defrost
62.81 kWh / 24hr.

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24-hour power consumption - Defrost every 12 hours
(2 defrost events)
66.66 kWh / 24hr.
Backup Generator to ULC 2 to 5 minutes generator delay start time
from power outage
During Power Off All ULC operation and display are Off
Dry Alarm Contacts
Screw Terminals- C / NO
1st set of contacts will change state from closed to
open when either chamber door is open. The
contacts will close when both chamber doors are
closed.
2nd set of contacts will change state from closed to
open when a “General Alarm Signal” is generated by
the ULC. (High temperature, door open too long,
failed refrigeration system, etc.)
Power Receptacle Location
At least 3 feet (1 meter) clearance in front of
receptacle, with a 30” (75 cm) wide working space,
and headroom at least the height of the equipment.
Network (LAN) Connection
Network (LAN) Connection is not available on the
standard ULC series.
If the optional Farrar Remote Predictive Monitoring
Analytic Solution or Monitoring Hardware Solution is
purchased, then each refrigeration unit will require a
hardwired RJ45 internet connection.
Water Cooled Condenser
Water Cooled Condenser
4 x ½” FPT connections (2 per refrigeration
system)
Pressure differential = approximately 20 PSI (1.4
bar)
*Tower water:
Water temperature ≤30°C.
Maximum flow rate = 7 gpm (27 lpm)
Average flow rate = 4.5 gpm (17 ipm)
*Chilled water:
Water temperature ≤10°C
Maximum flow rate = 3.5 gpm (14 lpm)
Average flow rate = 2.0 gpm (8 lpm)
*Total for both refrigeration systems

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4.0 Installation requirements
1. For installation of the Construct on Site chamber and for installation of the refrigeration systems,
please refer to the Installation Manual. If lifting unit, place lift forks under center of enclosure.
2. For proper air flow, ensure there is a minimum of the following distances from the unit to the nearest
wall or ceiling:
Back of unit: 14.0 in. / 35.0 cm
Sides of unit: 14 in. / 35 cm
Top of unit: 12 in./ 30 cm. Overall minimum height of location, floor to ceiling is 13 ft 4 in. / 4.05
meters.
3. Ensure there is 3 feet (1 meter) of free space in front of power supply receptacles.
4. For proper performance, ensure that all product loaded into the chamber is kept at least 1” (2.5
cm) from all wall and ceiling surfaces.
5. Two plugged access port are provided 0.875” (2.22 cm) (see Mechanical Layout drawing for
location). These ports may be used for customer temperature mapping of chamber or continuous
sample monitoring. The port is filled with insulation and both ends are plugged to reduce moisture
infiltration. After monitoring sensors are installed replace the insulation and seal or plug both inside
and outside of the cabinet to reduce moisture infiltration. Failure to properly seal the access
port on both the interior and exterior will result in moisture infiltration, and performance
degradation of the unit.
6. Connect each refrigeration system to a separate receptables 30 Amp (32 Amp 50Hz.) 208-230
VAC 2 pole, 2 wires + GND (3 wire receptacle).
Note: The ULC/ULCi must be powered by 2 separate single phase circuits.
NEMA L6-30P, LOCKING PLUG (North America) IEC 60309 Plug (International)
7. Water cooled system (ULC-WC, ULCi-WC).
a. The inlet and outlet water connections are located on the top of each refrigeration
system. The connections are 1/2” FPT.

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b. To allow for movement of the equipment during servicing, we recommend using
½” industrial grade flexible hose; 8’ (2.5m) in length.
c. We strongly recommend installing a 1/2” ball valve at the water inlet along with a
strainer and pressure gauge. These will facilitate any servicing or testing
requirements.
d. Check all connections for leaks.
e. Verify the water differential pressure is adequate along with nominal flow and
temperature requirements (see Specifications).
5.0 Control System
The unit consists of heating, cooling components, fans, and control components. The major cooling
components include a compressor (heat moving component), condenser (heat rejection part),
evaporator (heat absorption part) and PWM valve (refrigerant flow control devices). Controls consists
of a circulation fan, IDEC PLC Series FC6A, RTD temperature sensors, PWM valve hot gas control,
solid state relay and miscellaneous other hardware.
There are various settings that the user can adjust to suit their specific requirements. These are
described in the Operation section of this manual.
6.0 Operation
1. POWER CONTROL:
Electrical power is provided via a power cord. Internally, power passes through a 2-pole
main circuit breaker, which is accessible inside the main control enclosure.
The only user accessible means of power disconnection is by unplugging the power cord
from the wall receptacle.
Torefrigeration
systemwater
connections

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2. UNIT OPERATION:
All unit operation is performed using the door mounted touch screen displays.
3. Basic Operation:
After unit setup, plug the power cord(s) into the properly sized receptacles. The door
mounted displays will turn on with the Home screen being displayed. The present interior
chamber temperature will be displayed.
Starting the cooling:
Note: Operator privileges or higher are required to access AUTO button and
change the temperature set point.
a) To start the unit cooling to operating temperature, press the Health icon on the
Home screen (see Health System Screen 1). Press the “AUTO” button, then enter
the access code and press Enter. After a short delay period, the compressors will
start and the unit will begin to cool down to set point. It is not necessary to remain
on this screen while waiting for the compressors to start.
b) To set the chamber temperature, press the Setup icon (see Setup Screen 1). Touch
the Temp Set Point display, then enter the access code and press Enter. Input the
desire temperature set point and press ENT (enter).
Review the Setup, System Health, Unit Information and Technical Service screens to input
your required values and familiarize yourself with the features of the ULC series.

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a. Home Screen
Home Screen
Previous Screen
Next Screen
System Setup This icon will display the system setup screens for alarms, alarm delays, defrost
cycles, screen settings, service intervals and factory defaults in sequential order.
System Health This icon will display the general system health screens for primary cooling,
defrost status and system critical temperatures in sequential order.
Unit Information This icon will display the general information concerning the unit, such as typical
serial label information, software revisions, and support contact information.
Technical/Service This icon will allow access to the technical and service functions of the unit. Note;
these functions will typically be under log-in security protection and should only
be accessed by trained, service personnel. The operation of these screens is
described in a separate Service Manual.

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Alarm Silence This icon will be displayed during an active alarm. Touching this Alarm Silence
Icon will silence the audible alarm for a period of time set up by the user. Should
the alarm condition remain active, the audible will sound again at the end of the
delay period.
Warning Icon This icon will be displayed during an active warning. The “Warning Icon” is visible
when a warning message is active. Touching this “Warning” icon will display the
active warning message(s). A warning informs users that an Alarm Condition
may occur if the warning conditions is not resolved within the programmed delay
period. Example: door open warning with system in a defrost mode.
Alarm Icon This icon will be displayed during an active alarm. The “Alarm Icon” is visible
when an alarm condition is active. Touching this “Alarm” Icon will display the
active alarm condition(s). Action is required by the end user to resolve the Alarm
condition. Example: door open alarm, system failure alarm.
Service Icon This icon will be displayed to indicate the system is due for maintenance or
calibration.
Note: Operator privileges or higher will be required to make changes
to any of the controller settings. The access will return to view only if
the control is left unattended for more than 5 minutes.

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b. Set-up Screen
RETURN TO HOME SCREEN
RETURN TO PREVIOUS SCREEN
GO TO NEXT SCREEN IN THIS SEQUENCE
ALARM HIGH: Touch the “Alarm High” display. A numerical entry keypad will be displayed. Enter
the high temperature alarm set point. The available range is +30°C to -80°C. The Factory Default
value is 30°C. Press ENT (enter) to save.
TEMP SET POINT: Touch the “Temp Set Point” display to enter the chamber control temperature.
The available ranges are
ULC, ULCi -40°C to -80 °C
ULC-WR, ULCi-WR -20°C to -80°C
The Factory Default setting is -80°C.
Press ENT (enter) to save.
ALARM LOW: Touch the “Alarm Low” display to enter the low temperature alarm set point. The
available range is -40°C to -99°C. The Factory Default is -88°C. Press ENT (enter) to save.
Home Screen
Each screen will display
the current internal
chamber temperature
Previous screen Next Screen

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REFRIG ASSIST: The ULC series is equipped with a refrigeration assist feature. When the
chamber warms up by the programmed Refrig Assist temperature, the Standby system will run to
assist the Primary system to return the chamber to the temperature set point.
Touch the “Refrig Assist” display to enter the temperature warmup above Temp Set Point that will
cause the standby system to turn on. The available range is 0 °C to +40 °C. The Factory Default
is 3°C. Press ENT (enter) to save.
3°C is the recommended setting and should not be changed without consulting the factory.
Press to go to the next screen
SETUP 2:
TEMP ALARM DELAY: Touch “Temp Alarm Delay” display to enter the delay time before a High
or Low Temperature Alarm condition will cause the audible and visual alarm to be activated. The
available range is 0 to 120 minutes. The Factory Default is 5 minutes. press ENT (enter) to save.
DOOR OPEN DELAY: Touch the “Door Open Delay” to enter the time delay before an open
chamber door will cause the Door Open Too Long alarm to be activated. The available range is
5 to 300 seconds. The Factory Default is 30 seconds. Press ENT (enter) to save
RING BACK DELAY: Touch the “Ring Back Delay” display to enter the desired time period before
the audible/visual alarm will be re-enabled after the Alarm Silence is pressed. The available range
is 1 to 3000 minutes. The Factory Default is 1 minutes. Press ENT (enter) to save.
Press to go to the next screen.

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SETUP 3:
DEFROST CYCLE TIME: Touch “Defrost Cycle Time” display to enter the interval time period
between automatic defrosts. The available range is 2 to 168 hours. The Factory Default is 12
hours.
12 hours is the recommended setting and should not be changed without consulting the
factory.
DEFROST MAX TIME: Touch “Defrost Max Time” display to enter the length of the defrost cycle.
Note: the defrost is typically terminated automatically when the coil temperatures warm to the
designed defrost levels. The available range is 5 to 60 minutes. The Factory Default is 30 minutes.
30 minutes is the recommended setting and should not be changed without consulting the
factory.
DEFROST END TEMP: Touch “Defrost End Temp” display to enter the defrost automatic
termination temperature. The available range is 0 °C to +40 °C. The Factory Default is 5°C.
5°C is the recommended setting and should not be changed without consulting the factory.
*Only the cooling coils (evaporators) are defrosted by the automatic defrost system. It
keeps the coils clear in order to maintain air flow through the chamber. The chamber walls,
shelves, doors, etc. will be covered with ice/snow over time. It will have to be removed
manually. See the maintenance section for chamber defrost instruction.

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Press to go to the next screen.
SETUP 4:
SINGLE/DUAL SYSTEM: Touch either “Select Single Operation” or “Select Dual Operation”,
denoting if there are one or two refrigeration systems operational on this chamber. The software
to automatically switch between the two systems.
OTHER SIDE DETECTED: This icon indicates if the controls are detecting one or two
refrigeration systems operational.
The opposite side system is not detected.
The opposite side system is detected.
SCREEN BRIGHTNESS: Touch the “Screen Brightness” Arrow and the adjustment screen will
open. Adjust the display brightness to the desired level. Touch the ‘x’ in the upper right corner of
the screen to return to the System Configuration screen.
IGNORE DOOR SWITCH: Normally, opening either door will cause the refrigeration system to
turn off and remain off as long as the door is open. This icon allows the operator to disable the
door switch input, so that the refrigeration system remains on when the door is open.
Note: this is not the recommended mode of operation. The Ignore Door Switch mode should
only be used if a door switch fails. In this mode, the refrigeration systems will continue to operate
when the door is open or closed. Once the door switch is repaired, the Ignore Door Switch should
be turned off.
Pressing the icon will toggle between the two modes of door switch control.
The door switches will be monitored. Both refrigeration systems will turn off as
long as the door remains open.

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The door switches will be ignored. The refrigeration system will continue to run
under temperature control, regardless whether the doors are open or closed. When this mode
is selected, there will be a message on the Home Screen stating:
WARNING: DOOR SWITCH DISABLED
to remind the operator that the door switch is being ignored. No alarms or lights related to door
openings will be activated.
Press to go to the next screen.
SETUP 5:
CALIBRATION INTERVAL: Touch the “Calibration Interval” display to enter the time interval
between calibration notification messages. The available range is 1 to 24 months. The Factory
Default is 12 months.
The Service Icon will display 30 days prior to the end of the interval to allow for scheduling.
RESET CALIBRATION TIMER: Touch the right arrow icon to reset the calibration notification
timer. A second screen will display to confirm the reset of the calibration notification timer.
MAINTENANCE INTERVAL: Touch the “Maintenance Interval” display to enter the time interval
between preventative maintenance notification messages. The available range is 1 to 24 months.
The Factory Default is 24 months.
The Service Icon will display 30 days prior to the end of the interval to allow for scheduling.
RESET MAINTENANCE TIMER: Touch the right arrow icon to reset the maintenance notification
timer. A second screen will display to confirm the reset of the maintenance notification timer.

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Press to go to the next screen.
SETUP 6:
RESET SETTINGS TO FACTORY DEFAULTS: Touch the right arrow to reset all control settings
to factory default values. A second screen will display to confirm the reset. Touching the green
check mark on the second screen will reset all settings the factory values.