Stirling Ultracold SU780XLE Upright Ultra Low Freezer Instruction Manual

Stirling Ultracold SU780XLE Upright Ultra Low Freezer

Product Information

Specifications

• Model: SU780XLE
• Technology: Free-piston Stirling engine
• Cooling Type: Deep-temperature cooling
• Efficiency: High efficiency
• Package: Compact

Product Usage Instructions

Initial Setup

1. Unpack the freezer unit and ensure all packaging materials are removed around the fan inlet and outlet holes.
2. Adjust the leveling feet using the included wrench to secure the freezer in place.
3. Plug the AC power cord into the main power socket at the back of the unit and then into an electrical outlet.
4. Switch the AC power to the On position.
5. Remove factory tape at the access port stopper before initial use.

Basic Graphical User Interface (GUI) Functions

• ON / OFF: Switch the main power on at the back of the unit. Tap Home > Set-up > Enter PIN > Enter > Select Setpoint Type > +/- > Save.
• Silence Alarm: Tap the on-screen alarm warning. Tap Home > Event Log > use ^ / v to view.
• Event Log Chart History: Tap Home > Chart History > Select Chart History Type > use < / > to view.

Advanced GUI Functions

• Alarm Set-up: Tap Home > Set-up > Enter PIN > Enter > Alarms > Select Alarm Type > Use +/- to adjust > Save.
• Date and Time Change: Tap Home > Set-up > Enter PIN > Enter > Date / Time > Select Date/Time component > use +/- to adjust > Save.
• PIN Change: Tap Home > Set-up > Enter PIN > Enter > PIN > Enter New PIN > Enter > Re-enter New PIN > Enter.

Handle Operation

Caution:
The unloaded freezer is top-heavy. Do not pitch the freezer more than 12 degrees from horizontal to prevent tipping over during moving and installation.

FAQ

Q: What technology does the SU780XLE model incorporate?
A: The SU780XLE model incorporates next-generation free-piston Stirling engine technology, providing high-efficiency deep-temperature cooling in a compact package.

INITIAL SETUP

1| Unpack freezer unit and included components, ensure all packaging material has been removed from around the fan inlet and outlet holes.
---|---
2| Adjust the leveling feet (wrench included) to secure the freezer in place.
3| Plug the AC power cord into the main power socket at the back of the unit and then into an electrical outlet.
4| Switch the AC power to the “On” position.
5| Notice: Ensure the access port stopper or sealant is in place. Remove factory tape at the port stopper before initial use.
6| Ensure the setpoint is within the desired range (default is -80˚C) or change the setpoint to the user-preferred temperature according to the control functions outlined below.

GUIDE TO BASIC GRAPHICAL USER INTERFACE (GUI) FUNCTIONS

ON / OFF| Switch the main power on, located at the back of the unit adjacent to the AC cord.
---|---
Change Setpoint| Tap Home > **Set-up > Enter PIN > **Enter >

Select Setpoint Type > **+ / – > **Save

Silence Alarm| Tap the on-screen alarm warning.
Event Log| Tap Home > **Event Log > use ^ / v to view
Chart History| Tap Home > **Chart History > Select Chart History Type > use < / > to view

GUIDE TO ADVANCED GUI FUNCTIONS

Alarm Set-up| Tap Home > **Set-up > Enter PIN > **Enter > **Alarms >**

Select Alarm Type > use + / – to adjust > **Save**

---|---
Date and Time| Tap Home > **Set-up > Enter PIN > **Enter > **Date / Time >**

Select Date/Time component > use + / – to adjust > **Save**

Change PIN| Tap Home > **Set-up > Enter PIN > **Enter > **PIN > Enter New PIN > **Enter > Re-enter New PIN > **Enter
Calibrate RTDs| Requires Authorized Service & PIN**

Tap Home > **Set-up > **About > **Service > Enter Service PIN > **RTD Calib. > Select RTD > use + / – to adjust > **Save**

HANDLE OPERATION
The Stirling Ultracold handle is designed for one-handed operation. To open the freezer, rotate the handle towards the user at approximately 90°. To engage the Power-Release, apply firm downward pressure on the handle while in its open position. The Power-Release assists when the freezer door is adhered to the gasket after long periods of non-use as well as when air pressure is not yet equalized. To close, with the handle in the horizontal position, push the door to the cabinet and return the handle to its original vertical position.

CAUTION: Tipping Hazard
The unloaded freezer is TOP HEAVY. Use caution in moving and installation. Do not pitch the freezer more than 12 degrees horizontally. Doing so may cause it to tip over.

ULTRA-LOW TEMPERATURE FREEZER -86ºC
The SU780XLE model incorporates next-generation free-piston Stirling engine technology. Free-piston Stirling engine technology differs from conventional compressor-based refrigeration by providing high-efficiency, deep-temperature cooling in a compact package.

INTRODUCTION

DESCRIPTION
The Stirling Ultracold SU780XLE Ultra-Low Temperature Freezer uses a unique free-piston Stirling engine to provide high-efficiency, deep-temperature cooling.

INTENDED USES

• The SU780XLE freezer provides ultra-low temperature storage for general (non-flammable) research laboratory materials requiring a stable, computer-controlled, deeply-frozen environment. The storage of blood or blood products intended for medical purposes is prohibited.

• The SU780XLE freezer is classified for use as stationary equipment in a Pollution Degree 2 and Overvoltage Category II environment. The unit is designed to operate under the following environmental conditions:

  • Indoor use

  • Altitude up to 2000 m

  • Maximum relative humidity is 80% for temperatures up to 31°C decreasing linearly to 50% relative humidity at 40°C.

DOCUMENTATION

• This operating manual describes all aspects of receiving, installing, setting up, using, moving, and storage of the Stirling Ultracold SU780XLE Freezer.
• The freezer is controlled with a Graphical User Interface (GUI). This operating manual describes the use of the GUI in Section 5.

ORGANIZATION OF THIS MANUAL

This manual is organized as follows:

• Features
• Safety Precautions
• Unpacking and Installation
• Operation
• Transporting, Moving, and Storage
• Preventative Maintenance
• Troubleshooting
• Specifications
• Warranty.

Please note that precautions and safety instructions are part of each section and must be observed to avoid damage to the freezer or harm to users.

USER ADVISORY:
Deep temperatures are dangerous, use proper precautions when operating ultra- low temperature freezers. This ultra-low temperature freezer is intended for storage of frozen sample products or vials at deep temperatures. Stirling Ultracold, a Division of Global Cooling, Inc. cannot be held responsible for damages or loss of stored product attributed to unintended use. In no case will Stirling Ultracold, a Division of Global Cooling, Inc. be held liable for loss of stored product resulting from electrical, mechanical, or structural fail. re? As with any ultra-low-temperature freezer, appropriate backup and redundancy considerations are the responsibility of the user.

To ensure the correct use of the product, basic safety measures should always be followed including the warnings and cautions listed on the product and in this operating manual.

Hazard Symbols

• This symbol used alone indicates important operating instructions that reduce the risk of injury or poor performance of the unit.
• CAUTION: This symbol, in the context of a CAUTION, indicates a potentially hazardous situation that if not avoided could result in minor to moderate injury or damage to the equipment.
• WARNING: This symbol, in the context of a WARNING, indicates potentially hazardous situations that, if not avoided, could result in serious injury or death.
• Flammable warning messages alert the user to possible risks of personal injury and equipment damage.

Degrees of Danger

• DANGER Will lead to severe injuries or death
• WARNING May lead to severe injuries or death
• CAUTION May lead to light to moderate injuries
• NOTICE May lead to material damage

FLAMMABLE REFRIGERANT USE:
SU780XLE uses 90 grams of R-170 (Ethane) in a hermetically sealed thermosiphon tubing. It requires caution in use and repair.

• Danger – Risk of Fire or Explosion. Flammable Refrigerant Used.
  • Do Not Drill or Puncture the Inner Liner.
• Danger – Risk of Fire or Explosion. Flammable Refrigerant Used.
  • To be Repaired Only by Trained Service Personnel. Component Parts Shall
  • Be Replaced With Like Components. Do Not Puncture Refrigerant Tubing.
• Caution – Risk of Fire or Explosion. Flammable Refrigerant Used. Consult the 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 by Federal or Local Regulations. Flammable Refrigerant Used.
• Caution – Risk of Fire or Explosion Due to Puncture of Refrigerant Tubing; Follow Handling Instructions Carefully. Flammable Refrigerant Used.

FEATURES OF THE SU780XLE

FREE-PISTON STIRLING ENGINE
The SU780XLE Ultra-Low Temperature Freezer uses the Stirling Ultracold Model M600 free-piston Stirling engine to provide high-efficiency, deep-temperature cooling. No HCFC or CFC refrigerants are used in the M600 and SU780XLE. The M600 Stirling engine uses approximately 10 grams of helium gas as a working fluid. Approximately 90 grams of R-170 (Ethane) is used in the thermosiphon which removes heat from the freezer.

CABINET DESIGN FEATURES
The cabinet utilizes vacuum-insulated panels with non-HFC polyurethane foam support providing an internal volume of approximately 780 liters. The environmentally friendly blowing agent is Ecomate®. Door sealing consists of three fully replaceable gaskets. The handle uses a cam-actuated, 90° rotation to apply a mechanical advantage in opening the freezer door. An integrated door gasket heater minimizes water or ice deposits on the gasket interface.

HANDLE FEATURES
The Stirling Ultracold handle is designed for one-handed operation. A Power- Release cam assists when the freezer door is adhered to the gasket after long periods of non-use as well as when air pressure is not yet equalized.

TEMPERATURE MONITORING FEATURES
One Resistance Temperature Detector (RTD) measures the internal cabinet temperature of the SU780XLE. The RTD provides input to the controller and the GUI (Graphical User Interface) display for reporting and logging. The RTD may be calibrated by the user through the GUI. The GUI provides a door-open time- out alarm and monitors the temperature for instances beyond high and low limits. These limits can be set automatically or adjusted manually. Alarms are reported through an audible alarm in the freezer enclosure and through a contact closure that may be connected to an external alarm. The GUI provides options to temporarily suppress alarms and set a delay time before the alarm is reported via the contact closure.

GRAPHICAL USER INTERFACE
The Graphical User Interface (GUI) is implemented on a touchscreen control panel on the front of the cabinet. The GUI allows the user to:

• Set freezer control, alarm, and communications parameters
• Provide password-protected access to parameter changes
• Display freezer status
• Display temperature graph and event log
• Display diagnostic and service information
• Display freezer identification information.

The following SU780XLE parameters are accessed and modified through the GUI touch screen (for complete instructions see Section 5).

Accessible Values

• Current freezer temperature
• Temperature history chart
• Alarm status
• Event log
• Battery information
• “About” screen (general information)
• Service contact information

Modifiable Values

• Temperature setpoint
• Under temperature limit
• Over temperature limit
• Over temperature alarm delay after door opening
• Audible alarm silence duration
• External contact alarm delay
• Door open alarm delay
• Door defrost percentage
• Password Identification Number (PIN)
• Current date
• Current time
• RTD calibration adjustments

PICTORIAL TOUR

1. The mechanical compartment containing the M600 Stirling engine
2. Temperature recorder location (optional) > Factory or field installed
3. LCD Display and Graphical User Interface (GUI)
4. Magnetic latching inner doors
5. Vacuum relief port (interior, not shown)
6. Recessed electrical panel
   • A. AC Power Switch
   • B. AC Power Connector – Universal power input 120 to 240VAC at 50/60 Hz, single phase
   • C. Seismic Strap Anchor Location (accepts – 5/16”-18 x 5/8” screw)
7. Recessed accessory panel
   • C. Seismic Strap Anchor Location (accepts – 5/16”-18 x 5/8” screw)
   • D. External Alarm Terminal (dry contacts), 4-20mA (optional)
   • [ (+) : (-): G: NC: NO: C ]
   • (+) – Positive
   • (-) – Negative
   • G – Ground
   • NC – normally closed, opened at alarm
   • NO – normally opened, closed at alarm
   • C – Common
   • E CO2/LN2 Backup connector (optional – factory or field installed)
   • F Ethernet Port
8. Air vent
9. Outer door hinges
10. Access port for independent mockup > 0.5” (12.7 mm) with plug
11. Cabinet breaker
12. Dual-wheel casters and leveling feet at front casters
13. Stainless steel shelves (shown with 2 shelves) > Adjustable on 0.5” (12.7 mm) centers
14. Temperature sensor (RTD)
15. Lockable door handle
16. Flexible door gasket
17. Electrical grounding stud > Inside the mechanical compartment, not shown

INCLUDED ITEMS

• Packing List
• Operating Manual (this document)
• Quick Guide
• Port Sealant
• Dry Contacts Plug
• 2 Keys
• Ice Scraper
• 1 Wrench

CAUTION: Tipping Hazard
The unloaded freezer is TOP HEAVY. Use caution in moving and installation. Do not pitch the freezer more than 12 degrees horizontally. Doing so may cause it to tip over.

SAFETY PRECAUTIONS

Potential hazards associated with the use of the SU780XLE freezer may impact the safety of persons in the workplace in which the freezer is installed. This includes persons who operate the freezer and other personnel in its vicinity. The freezer itself may also be damaged and/or its warranty voided by improper operation or usage. All personnel who install, operate, transport, or place the freezer into storage should read this entire manual to understand those hazards. Consider storing this manual for ready reference within proximity of the freezer.

Specific precautions are included in each section of this operating manual. However, several important general precautions must be observed and are described below.

• Do not disassemble, modify, or repair.* There are no user-serviceable parts inside the freezer unit. Contact Stirling Ultracold for authorized repair procedures as required.
• Do not immerse in water, pour water on the unit, or operate where water may drip or fall on the unit. Operation under extreme environmental conditions, e.g., in very high humidity environments (RH 85% or more) also may lead to condensation or water intrusion.*
• Do not modify the cabinet, controls, or free-piston Stirling engine.*
• Do not cut, change, or modify the power cable.*
• Do not store flammable items such as gasoline, thinner, or solvents in the freezer > The freezer is NOT designed for Flammable Material Storage or rated as an explosion-proof freezer.
• Do not use hard and/or sharp objects, such as knives, screwdrivers, etc. to remove any frost or ice that has accumulated on the inside of the freezer. The inside panels are heat exchangers and can be damaged. Defrosting the cabinet is described later in this operating manual.
• Do not use solvents to clean the panel or the outside or inside of the freezer.
• Do not remove the power cable by pulling on the cable, instead grasp the plug firmly and pull away from the outlet.
• Do not block the air vents from the mechanical compartment. > 4” clearance on the right side of the unit is recommended.
• Frostbite can occur instantly at -86°C. Safe operating procedures are essential.
  • Do not handle samples or freezer accessories with bare hands. Be especially careful not to spill ultra-low temperature materials onto skin or clothing.
  • Do not use gloves that become brittle at ultra-low temperatures.
  • Nitrile and latex gloves are inadequate.
  • Permeable gloves are dangerous because frozen materials can contact the skin and cause damage.
  • Be especially careful that materials at low temperatures are not spilled onto skin or clothing.
• Ultra-low temperatures may adversely impact freezer contents:
  • Do not put ice or liquid water directly in the freezer box; always use suitable containers.
  • Use only sample containers that have been approved or tested for ultra-low temperature use.
  • Do not use glass containers when the contents might freeze and expand.
  • Some plastics shatter at ultra-low temperatures. Avoid splinter hazards.
  • Biological and chemical hazards are still hazardous at ultra-low temperatures. Always wear proper protective equipment and follow appropriate isolation protocols.
  • Many types of labels will fall off and/or break at ultra-low temperatures. Some types of ink to glass and/or plastic at room temperature lose adhesion at ultra-low tetemperaturesIn addition to the ultra-low temperature hazards above, there are also physical hazards to consider:
  • Be cautious when closing the door to avoid a pinching hazard.
  • Be careful when loading the cabinet with heavy items.

SITE QUALIFICATION & SETUP

NOTE:
Before installing the SU780XLE, inspect the unpacked unit and any included items for shipping damage. Compare all contents to the packing list for completeness.

FREEZER SITE QUALIFICATION

1. Note the shipping packaging dimensions of 2184 x 1092 x 1118 mm (86” H x 43” D x 44” W) and shipping weight of 347 kg (765 lbs).
2. Be mindful when moving the shipment from the point of receipt to the place where it will be unpacked. The installation site must accommodate the freezer exterior dimensions of 1994 x 870 x 915 mm (78.5” H x 34.3” D x 36” W) and weight of 297 kg (655 lbs).
3. There are no specific required clearances for the top and back of the freezer; however, allowances must be made for electrical connections to the panel on the back of the freezer. The left side requires appropriate space for handle access. The right side requires appropriate space for door opening and air vent.
4. The access port must be plugged at all times for normal operation. Ingress to the access port (see Section 2.6) is required during normal operation.
5. The freezer should be installed on a level surface. The leveling feet can accommodate small variations.
6. There must be sufficient room to fully open the freezer door to access the contents.
7. The facility/room lighting must not obscure the readability of the touchscreen display and must provide good visibility for working with the contents of the freezer.
8. Do not block the air vents from the mechanical compartment. 4” clearance on the right side of the unit is recommended.
9. Care must be taken while unpacking and installing the freezer. Be mindful of its size and weight. Dropping the freezer is likely to damage it.
10. TIPPING HAZARD: Do not pitch the freezer more than 12 degrees from horizontal. Doing so may cause it to tip over. CAUTION: TOP HEAVY.

SETUP

1. Unpack freezer unit and included components, ensure all packaging material has been removed from around the fan inlet and outlet holes.
2. Adjust the leveling feet (wrench included) to secure the freezer in place.
3. Before switching on electrical power to the freezer, make all desired external connections:
   • AC power connection
   • External alarm
4. Switch the AC power to the “On” position.
5. Notice: Ensure the access port stopper or sealant is in place. Remove factory tape at the port stopper before initial use.
6. Review the date, time, and temperature setpoint within the Graphical User Interface and adjust as needed. The default setpoint is -80°C.
7. A one-time temperature alarm suppression provided by the software allows for the initial cooling of the freezer after start-up.
8. After the freezer reaches its operating temperature and its door is opened and closed, the partial vacuum created when warm air is admitted and then cooled will prevent the reopening of the door until the pressure is equalized. A vacuum relief port is provided to accelerate this process.
9. Be mindful of any electrical shock hazards associated with making electrical connections to the freezer, especially the external alarm connection.

OPERATION

RESPONSIBLE OPERATION
Responsibility for freezer operation should be part of the policy and procedure documentation or guidelines for the clinical, laboratory, or other activity for which the freezer is used. Safety requirements are integral to these responsibilities. Use this product only in the way described in the product literature and in this manual. Before using it, verify that this product is suitable for its intended use. If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

HANDLE OPERATION
The Stirling Ultracold handle is designed for one-handed operation. To open the freezer, rotate the handle towards the user through an angle of about 90°. To engage the Power-Release, gently apply firm, downward pressure on the handle while in its open position. The Power-Release assists when the freezer door is adhered to the gasket after long periods of non-use as well as when air pressure is not yet equalized. To close, with the handle in the horizontal position, push the door to the closed position and return the handle to its original vertical position.

GRAPHICAL USER INTERFACE (GUI)
Values for the following SU780XLE parameters are viewed and modified through the GUI touchscreen.

MODIFIABLE VALUES
The GUI is pre-programmed with default values for most parameters. Unless temperature limits are set manually, the software calculates default values appropriate for the temperature setpoint.

Accessible Values

• Current freezer temperature
• Temperature history chart
• Alarm status
• Event log
• Battery information
• “About” screen (general information)
• Service contact information

Modifiable Values

• Temperature setpoint
• Under temperature limit
• Over temperature limit
• Over temperature alarm delay after door opening
• Audible alarm silence duration
• External contact alarm delay
• Door open alarm delay
• Door defrost percentage
• Password Identification Number (PIN)
• Current date
• Current time
• RTD calibration adjustments

PIN
A Password Identification Number (PIN) may be set but is not displayed. Use the PIN to restrict access to GUI controls. The default PIN is 1234 and may be changed by the user to any four-digit numeric code or disabled.

GUI MENU
A hierarchical menu system is used to display and adjust system values. Each screen has a button to return to the default “Home” screen and a “Back” button to return to the prior level of the menu. Screen names (where applicable) are within brackets.

• Home – display of current freezer temperature.
• Data – display of current freezer temperature, system date and time, temperature setpoint and door defrost status (if at 0%).
• Set-up – display current temperature setpoint. The PIN is required if enabled.
  • Alarms – display and change alarm delay settings
  • Temp. Delay (min) – duration of time in which the audible alarm is delayed when the temperature is out-of-specification.
  • Silence Dur. (min) – duration of time in which the audible alarm is delayed after the ‘Silence’ button is tapped.
  • Ext. Delay (min) – duration of time in which the alarm dry contact activation is delayed after the alarm condition is detected.
  • Door Delay (min) – duration of time that the door may remain open before an audible alarm sounds.
  • Battery Info – displays battery voltage and current information.
  • Date/Time – display and change system date and time.
  • Door Defrost – adjust the defrost heater between 0 to 100%. A warning will be displayed on the ‘Home’ screen if set to 0%.
  • Setpoint – display and adjust over temperature setpoint, temperature setpoint, and under temperature setpoint
  • PIN – disable/enable the system PIN and change PIN.
• Event Log – track the last 200 alarm conditions such as door openings, temperature setpoint changes, temperature conditions, and power outages.
• Chart History – display the cabinet interior air temperature over the last 12 hours, 24 hours, or 7 days. Increase chart resolution by tapping the screen.
• About – display freezer model number, serial number, firmware version, engine number, run hours, temperature setpoint, and date.
  • Alarm Test – test the system alarm.
  • Service Contact – display manufacturer contact information.
  • Service – display temperature setpoint, cabinet, cold-head RTD temperatures, warm-head thermistor temperature, as well as engine voltage, current, and power. Service screen information is used for service by authorized personnel only. Service PIN required.
  • RTD Calib. – display RTD readings and calibration offsets. Calibration is used to compensate for discrepancies between Display RTD and user-supplied temperature measurement.

BASIC GUI CONTROLS

• To change a value on the screen:
  • Tap the appropriate button to highlight the parameter
  • Use the +/- or < / > buttons to enter the desired value
  • Then use the “Save” button to complete the change.
• Each screen has a button to return to the default “Home” screen and/or a “Back” button to return to the prior level of the menu.
• PINs are entered through a numeric keypad screen with an “Enter” button to complete the entry and a “Cancel” button to terminate the entry.
• PINs may be disabled on the PIN screen by leaving the new PIN value blank. When the PIN is disabled, any person can perform all actions available via the GUI, including changing the temperature setpoint and alarm settings.

Guide to Basic GUI Functions

• ON / OFF Switch the main power on, located at the back of the unit adjacent to the AC cord.
• Change Setpoint Tap Home > Set-up > Enter PIN > Enter > Select Setpoint Type > +/- > Save
• Silence Alarm Tap on-screen alarm warning.
• Event Log Tap Home > Event Log > use ^ / v to view
• Chart History Tap Home > Chart History > Select Chart History Type > use < / > to view

Guide to Advanced GUI Functions

• Alarm Set-up Tap Home > Set-up > Enter PIN > Enter > Alarms > Select Alarm Type > use +/- to adjust > Save
• Date and Time Tap Home > Set-up > Enter PIN > Enter > Date / Time > Select Date/Time component > use +/- to adjust > Save
• Change PIN Tap Home > Set-up > Enter PIN > Enter > PIN > Enter New PIN > Enter > Re-enter New PIN > Enter
• Calibrate RTDs Requires Authorized Service & PIN
  • Tap Home > Set-up > About > Service > Enter Service PIN >
  • RTD Calib. > Select RTD > use +/- to adjust > Save

1. Power Up
   The Power Up screen will appear for 20 seconds when the freezer is initially turned on.

2. Home
   The Home Screen displays the current temperature of the freezer.

   • Tap the display to access the Data screen.

3. Data
   Home > Data
   

   • Tap the Set-up button to change temperature setpoints and access menus for battery alarm, alarms, date & time, door defrost, and PIN*
   • Tap the Event Log button to view the last approximately 200 events
   • Tap the Chart History button to view the cabinet air temperature over the last 12 hours, 24 hours, or 7 days
   • Tap the About button for freezer information including serial number, service contact, and alarm test.
     *Accessing GUI menus within Set-up requires a PIN (if PIN is enabled)

4. PIN Entry Screen
   Home > Data > Set-up (if PIN enabled)

   • Tap 1 2 3 4 (default PIN)
   • Tap Enter.

5. Set-up
   Home > Data > Set-up > Enter PIN > Enter
   The Set-up screen displays the over-temperature, current temperature, and under-temperature setpoints.

   • Tap the Alarms button to view/change the alarm delays
   • Tap the Battery Info button to view battery details
   • Tap the Date /Time button to view/change the system date and time
   • Tap the Door Defrost button to view/change the defrost percentage
   • The Setpoint button is pre-selected. Users can view/change the setpoints on this screen Tap the PIN button to change or disable the PIN.

6. Setpoint
   Access this screen to change the temperature setpoint or over/under temperature thresholds. Home > Data > Set-up > Enter PIN > Enter

   • Select the appropriate setpoint type, use the + and – buttons to adjust, and then tap Save. (Note: If Save is not tapped, new values will not be used).
   • Over and Under Temperature thresholds can be no less than 4°C and no more than 20°C from the setpoint
   • Over and Under Temperature thresholds will automatically be kept within this range.

7. Battery Information
   Home > Data > Set-up > Enter PIN > Enter > Battery Info
   View battery, input, and system voltage as well as battery and input current information.

8. Alarms
   Access this screen to view or alter freezer alarms. Home > Data > Set-up > Enter PIN > Enter > Alarms

   • Select the appropriate alarm type, use the + and – buttons to adjust to the preferred delay/duration (in m nu s),and  then tap Save. (Note: If Save is not tapped, new values will not be used).
   • Temp. Delay [Temperature Delay] delays the over-temperature alarm (from 1 to 120 mins) after a door opening
   • Silence Dur. [Silence Duration] delays alarm for a specified period (from 1 to 120 mins) when silence is tapped
   • Ext. Delay [External Delay] delay (from 0 to 120 mins) between audible alarm and remote alarm
   • Door Delay [Door Delay] period (from 1 to 10 mins) that the door can be open before the alarm sounds.

9. Date/Time
   Access this screen to enter date and time values. Home > Set-up > Enter PIN > Enter > Date / Time

   • Select the appropriate time/date component, use the + and – buttons to adjust, and then tap Save.

10. Door Defrost
    Adjust defrost heater levels percentage based on 30-minute periods. Tap Home > Set-up > Enter PIN > Enter > Door Defrost

    • Use the + and – buttons to adjust the percentage then tap Save
    • 100% turns the heater on for maximum duty cycle
    • 60% is recommended for most laboratory environments
    • 0% provides no-defrost heating (Note: Warning will display on Data screen.)

11. PIN
    By default, the PIN is enabled with the value of 1-2-3-4. Use the PIN screen to change or disable the PIN.
    Home > Data > Set-up > Enter PIN > Enter > PIN

    • To change the PIN:
    • Using the keypad, enter a new 4-digit PIN then tap Enter.
    • You will then be prompted to re-enter the new PIN, then tap Enter
    • To disable the PIN:
      Leave the Enter New PIN field blank and tap Enter. Leave the Re-Enter New PIN field blank and tap Enter. PIN is disabled and the user is returned to the Set-up Screen.

12. Event Log
    The Event Log will display the last approximately 200* events in about 30 pages, listing 7 events per page. The last 7 events are shown by default. Events beyond 30 pages will not be saved.
    Home > Data > Event Log

    • Tap the ^ or v to scroll.
    • Approximate because the length of the stored parameter changes depending on the event. Once the registers are full, the oldest data is deleted to make place for the newest data.

13. Chart History
    The Chart History screen will display the internal air temperature of the freezer for the previous 11 months in 12-hour, 24-hour, or 7-day increments.
    Home > Data > Chart History

    • Tap 12 Hours, 24 Hours or 7 Days as desired
    • Tap < or > to adjust the time/date in view.

14. Alarm
    In the event of an Alarm event, a warning will be seen on each screen informing the user of the reason for the alarm. Tap the warning to silence the alarm.

15. About
    Access this screen to observe specific freezer information including Model Number, Serial Number, Firmware Version, Inverter Version, Engine Number, Run Hours, Power Hours, and IP Address.
    Home > Data > About

    • Tap the Alarm Test button to test alarms
    • Tap Service Contact to see service contact information
    • Tap the Service button to view freezer parameters such as RTD temperatures and engine voltage, current, and power.

16. Alarm Test
    Use this button to test the alarms.
    Tap Home > Data > About > Alarm Test

    • Tap the Alarm Test button to test the temperature alarm
    • The alarm sounds and the alarm test button becomes orange (see above)
    • Tap the Alarm Test button again to silence the alarm
    • The alarm is silenced and the button returns to its original color.

17. Service Contact
    The Service Contact Screen provides manufacturer contact information. Home > Data > About > Service Contact

18. Service
    The service screen provides technical information needed for service as well as RTD calibration. This screen is accessible only through the use of the service PIN.
    Home > Data > About > Service > Enter Service PIN > Enter

    • Tap the RTD Calib. button to calibrate the RTD(s).

19. Calibration
    RTD Calibration Screen is used to compensate for discrepancies between the Display RTD and a user-provided standard. This screen requires Authorized Service & PIN.
    Home > Data > About > Service > Enter Service PIN > Enter > RTD Calib.

    • Tap to select the desired RTD, then use the + and – buttons to adjust the offset, and then tap Save.

MANAGING FREEZER CONTENTS
The SU780XLE freezer is designed for long-term storage of sample materials with ultra-low, well-regulated temperature storage requirements.

• The temperature setpoint for the freezer should be changed as appropriate for the materials being stored using the Graphical User Interface (GUI) – adjusting the high and low-temperature limits as necessary.
• The current freezer temperature is displayed on the Home screen, and a temperature history chart is available within the set-up screen.
• Materials may be placed in the freezer in any convenient arrangement that does not block the access port, interfere with the door gasket, or prevent the door from closing completely.
• For best results operate the freezer at full capacity with real or simulated products to increase the thermal mass, displace air, and maintain optimal stability.
• Please review the safety precautions in Section 3.

CLEANING
Cleaning the Freezer Surfaces

• Clean the exterior surfaces of the SU780XLE cabinet as needed by using a soft cloth and mild detergent. Do not use a solvent (such as bleach) or harsh abrasive cleansers or pads.
• In the event of excess ice accumulation, remove any ice that accumulates inside the freezer by defrosting it.
  • Transfer the contents of the freezer to alternate storage, switch off the power to the freezer, and wait for the ice to melt.
  • Wipe up moisture with a clean cloth. If the freezer door can be left ajar safely, defrosting will be more rapid.
  • After defrosting the freezer, switch the power back on. When the temperature reaches the set point, return the contents to the freezer.
• Refer to Safety Precautions (Section 3) of this Operating Manual while defrosting the freezer.

CALIBRATION OF THE RESISTANCE TEMPERATURE DETECTOR (RTD)
The SU780XLE RTD may be calibrated by inserting a temperature sensor through the access port of the cabinet wall and securing it next to the RTD located in the right rear corner of the interior, just above the shelf.

• To provide access to the RTD, it may be necessary to transfer the contents of the freezer to alternate storage. Note the Safety Precautions in Section 3 of this Operating Manual while making such transfers.
• Navigate to the RTD Calibration screen using the Graphical User Interface (GUI). This requires a Service PIN.
• To change offsets:
  • Use the “+” and “–“buttons to adjust the offset to the desired value.
  • Tap “Save”.

SAFETY PRECAUTIONS
To ensure the correct use of the product, basic safety measures should always be followed, including the warnings and cautions listed on the product and in this operating manual.

Hazard Symbols

• This symbol used alone indicates important operating instructions that reduce the risk of injury or poor performance of the unit.
• CAUTION: This symbol, in the context of a CAUTION, indicates a potentially hazardous situation that if not avoided could result in minor to moderate injury or damage to the equipment.
• WARNING: This symbol, in the context of a WARNING, indicates potentially hazardous situations that, if not avoided, could result in serious injury or death.
• Flammable warning messages alert the user to possible risks of personal injury and equipment damage.

Degrees of Danger

• DANGER Will lead to severe injuries or death
• WARNING May lead to severe injuries or death
• CAUTION May lead to light to moderate injuries
• NOTICE May lead to material damage

TRANSPORTING, MOVING AND STORAGE

To move the freezer to another location or temporarily place it into storage, perform the following steps:

• Transfer the contents of the freezer to alternate storage. Refer to Safety Precautions (Section 3) of this Operating Manual while making such transfers. Shut down the freezer by turning off the power and allowing it to come to room temperature.
• Dry the inside of the freezer compartment and clean any spills.
• Disconnect wires and cables connected to the freezer. See Section 4.3 “Setup” for precautions associated with this task.
• Disinfect with a suitable sterilizing agent if the freezer has been used for biohazards. Do not use bleach.
• Close and secure the door to the freezer.
• Move the freezer. See Section 4 for precautions associated with this task.

PREVENTATIVE MAINTENANCE & SERVICE

The SU780XLE freezer is designed for years of trouble-free operation. To prevent costly and inconvenient repairs and maintain your freezer to an optimum level of performance, follow the recommended preventative maintenance schedule and contact an authorized service provider as needed.

1. MONTHLY MAINTENANCE

   • DE-ICE GASKETS AND BREAKER
     Remove any frost buildup from around the door, door gaskets, and breaker using the provided scraper or a soft cloth.

   • INSPECT VACUUM RELIEF PORT

   • Ensure the vacuum relief port is free of frost or ice at the vacuum breaker.

   • Clear any ice using a provided scraper.

2. YEARLY MAINTENANCE
   To be performed only by an authorized service provider.

3. CHECK AND CLEAN HEAT-REJECT FINS

4. CAUTION: Stored voltage hazard – performed by the authorized service provider only.

5. CAUTION: Cover is in two parts and together weighs approximately 24 lbs.

6. CHECK DOOR ALIGNMENT
   Check that door alignment is correct and allows the door latch to be easily engaged.

7. BIENNIAL MAINTENANCE
   To be performed only by an authorized service provider.

   • REPLACE BATTERY
   • CAUTION: Stored voltage hazard – performed by the authorized service provider only.
   • CAUTION: Cover is in two parts and together weighs approximately 24 lbs.
   • CAUTION: Only use a sealed lead acid rechargeable battery (6V, 7Ah) as specified. Power-Sonic (PS-670) replacement batteries can be purchased from Stirling Ultracold (Part# SU105U-A000).
   • WARNING: Using a non-rechargeable battery may cause the battery to leak or explode and in extreme cases, the battery may burst into flames. Non-rechargeable batteries contain dangerous chemicals which may escape if used, causing serious health hazards.

POWER CORD REPLACEMENT

CAUTION:
Contact an authorized service provider before replacing the mains/power cord. The cord must be rated at a minimum of 250V and 12A. Cord must be approved by the following agencies: UL and CSA. If the freezer’s voltage rating does not match your mains/electrical supply, or if the plug on the mains/power cord does not fit the outlet, do not plug in the freezer.

TROUBLESHOOTING

Note
This freezer is designed for the storage of frozen products. For best results:

• Operate your freezer at full capacity with real or simulated products to increase the thermal mass, displace air, and maintain optimal stability
• Minimize the frequency and duration of door openings.

SPECIFICATIONS

FREEZER SPECIFICATIONS

• Electric Power 100 – 240VAC at 50/60Hz (Japan) 120 – 240VAC at 50/60Hz (All other regions)

• Maximum Power (Current) 1200 watts (10 amps @120V, 5 amps @240V), nominal

• Electric Supply Rating 15 amp or greater grounded circuit

• Cooling Engine Helium charged free-piston Stirling engine

• Heat Transport System Gravity-driven thermosiphon

• Refrigerant, Thermosiphon
  Risk of fire or explosion. Flammable refrigerant used. Do not dripunchr pun et   inner liner.

  • R-170 (Ethane) CFC/HCFC-Free, 90 grams
  • To be repaired only by trained service personnel.
  • Parts shall be replaced with like components.
  • Consult the Service Manual before attempting to service this product. All safety precautions must be followed.
  • Dispose of properly by federal or local regulations.
  • Follow handling instructions carefully.

• Temperature Range -86ºC to -20ºC @ 32ºC (90ºF) ambient, adjustable to 1ºC increments

• Ambient Operating Temperature
  +5ºC to +35ºC (41ºF to 95ºF)

• Warehouse Storage Temperature
  -5°C to +60°C (23ºF to 140ºF) at RH 65%

• Operational Environment

  • This ultra-low temperature freezer is designed for use in a normal laboratory environment.
  • Avoid unusual dust or particulate circulation.

• Useful Life 12 years, nominal

• Volume 780 liters (27.5 cu.ft.)

• Interior Dimensions 1542 x 705 x 740 mm | (60.7″ H x 27.8″ D x 29.1″ W)

• Exterior Dimensions 1994 x 870 x 915 mm | (78.5″ H x 34.3″ D x 36″ W)

• Net Weight, 5 Shelves, No Load 297 kg (655 lbs.)

• Shelf Capacity Maximum 3.175mm (0.125″) deflection with 68 kg (150 lbs.) evenly distributed

• Insulation High-performance vacuum insulated panels and polyurethane foam using the Ecomate® environmentally friendly, SNAP-compliant blowing agent

• Noise < 48 dB(A) at 1 meter from the front of the freezer in steady-state operation

• Control Sensor One RTD (PT100 Class A)

• Dry Contacts Positive, Negative, Ground, Normally Closed, Closed, Normally Open, and Common; activated by a power outage or any alarm condition

• Battery Back-up 12 12-hour control battery backup for touchscreen

PERFORMANCE DATA

EMPTY CABINET

• Setpoint -80ºC
• Steady State Energy Use (ENERGY STAR® Final Test Method 6.67 kWh/day at -75ºC (Weighted Average)
• Pull-Down from Ambient (25°C) 6.5 hours
• Recovery from Door Opening (ENERGY STAR® Final Test Method) 35 minutes
• Warm-Up Profile
  • 2.5 hours to -60ºC
  • 6.5 hours to -40ºC
  • 12 hours to -20ºC
• Heat Dissipation 981 BTU/h (load to HVAC)

MATERIALS SPECIFICATIONS

WARRANTY

The following Warranty applies to the SU780XLE manufactured by Global Cooling, Inc. To maintain maximum uptime and to optimize customer service, Global Cooling, Inc. reserves the right to exchange the SU780XLE with a serviceable new or previously used replacement at its discretion.

LIMITED WARRANTY, USA

• The warranty period starts TWO WEEKS after the original date of shipment from Global Cooling, Inc.
• The Stirling Ultracold freezer is warranted for TWO YEARS for materials and labor.
• The Stirling Ultracold free-piston Stirling engine and thermosiphon are warranted for a full SEVEN YEARS, parts only, from the original date of shipment from Global Cooling, Inc.
• If a service issue arises, contact Global Cooling, Inc. Service Department to register Warranty Service and initiate a resolution.
• Advanced authorization for a service company to diagnose the problem must be approved by Global Cooling, Inc.
• Global Cooling, Inc. will not be responsible for charges incurred for service calls made by a third party before authorization by Global Cooling, Inc.
• Global Cooling, Inc. retains the right to replace any product instead of servicing it in the field.
• Liability in all events is limited to the purchase value only.
• Under no circumstances will Global Cooling, Inc. be responsible or held liable for consequential or incidental damages associated with the loss of stored product in the event of an equipment failure.

LIMITED WARRANTY, CANADA

• The warranty period starts ONE MONTH after the original date of shipment from Global Cooling, Inc.
• The Stirling Ultracold freezer is warranted for TWO YEARS for materials and labor.
• The Stirling Ultracold free-piston Stirling engine and thermosiphon are warranted for a full SEVEN YEARS, parts only.
• If a service issue arises, contact Global Cooling, Inc. Service Department to register Warranty Service and initiate a resolution.
• Advanced authorization for a service company to diagnose the problem must be approved by Global Cooling, Inc.
• Global Cooling, Inc. will not be responsible for charges incurred for service calls made by a third party before authorization by Global Cooling, Inc.
• Global Cooling, Inc. retains the right to replace any product instead of servicing it in the field.
• Under no circumstances will Global Cooling, Inc. be responsible or held liable for consequential or incidental damages associated with the loss of stored product in the event of an equipment failure.

INTERNATIONAL DISTRIBUTOR LIMITED WARRANTY

• The warranty will start ONE MONTH after the ship date from Global Cooling.
• Global Cooling warrants that the Distributor shall acquire products purchased hereunder free and clear of all liens and encumbrances.
• Global Cooling further warrants all products to be free from defects in materials under normal use and service for TWO YEARS.
• The Stirling Ultracold free-piston Stirling engine and thermosiphon are warranted for a full SEVEN YEARS, parts only.
• Global Cooling shall provide to the Distributor, without charge, replacement parts to substitute for parts that must be replaced because of valid warranty claims.
• This warranty obligation is limited solely to the replacement of replaceable defective parts.
• All service charges concerning the repair or replacement of defective parts of products shall be the responsibility of the Distributor and/or Distributor’s customer.
• The distributor, on behalf of Global Cooling, shall perform such ordinary and customary servicing, repair, and/or parts replacement within the Territory at the Distributor’s expense; which may be passed on to the Distributor’s customer, at the Distributor’s discretion.

Stirling Ultracold

• 6000 Poston Road, Athens, Ohio 45701, USA
• T. 740.274.7900/1.855.274.7900
• F. 740.274.7901
• www.stirlingultracold.com.

©2022 Stirling Ultracold, a part of BioLife Solutions. All Rights Reserved.

• Global Cooling technology is manufactured under U.S. and International patents. Stirling Ultracold is a trademark of Global Cooling, Inc.
• Specifications are subject to change without notice.
• Refer to www.stirlingultracold.com for the latest specifications.

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