30 Armstrong Ave. Georgetown. Ont, L7G 4R9, Canada Tel: 800 800 5706 or 905 702 1441 Fax: 905 702 1442 www.minusforty.com SUBJECT: MODELS: UPS BATTERY TEST Testing the UPS Battery (Verification Test) Locking models: 13/19/22-USGF, 13/19/22- USGR, 43/44-UDGR, 43/44-UDGF TSB-MFT-0023 Effective Date: Nov 23, 2017 Revision: 00 Models equipped with an Electronic Food Health Timer Locking system utilize an Un-Interrupted Power Supply (UPS). The UPS battery has a life span of approximately four (4) to six (6) years. It is important to test the UPS at regular intervals to verify the UPS battery is performing properly. If the battery is faulty or near the end of its lifecycle, then in the event of a power outage your health timer equipped unit will NOT lock out and it will also NOT restart upon return of power. For these reasons it is important to replace any faulty UPS batteries. Please have ready a Phillips screwdriver and an extension cord long enough to reach the nearest 115V electrical wall outlet. These two items may be required to perform the UPS test. The following instructions will guide you through the test procedure to determine battery performance. UPS Battery Test Procedure Step 1: Ensure the appliance is connected to the electrical wall outlet and the switches located on the electronic controller are in the ON position. Check to see whether the interior LED lights are illuminated. If not, re-check the power supply connection and switch positions. Step 2: Verify the electronic controller display condition. If the display is blank, go to Step 3. If the display is active (not blank), go to Step 4. Blank (inactive) Step 3: Check whether contents of unit are safe for consumption. If not, remove contents from the unit and discard. Go to Step 6. Step 4: Is the UPS is emitting a constant tone? If so, go to Step 6. If not, turn off the appliance s power switch located beside the electronic controller. Active Step 5: If the electronic controller display is blank, go to Step 6. Power Switch Blank (inactive) Active Page 1 of 2
30 Armstrong Ave. Georgetown. Ont, L7G 4R9, Canada Tel: 800 800 5706 or 905 702 1441 Fax: 905 702 1442 www.minusforty.com SUBJECT: MODELS: UPS BATTERY TEST Testing the UPS Battery (Verification Test) Locking models: 13/19/22-USGF, 13/19/22- USGR, 43/44-UDGR, 43/44-UDGF TSB-MFT-0023 Effective Date: Nov 23, 2017 Revision: 00 a) If the electronic controller display is active, wait for five (5) minutes. An expired UPS battery will be beeping rapidly every half second over the five-minute span. If this occurs, go to Step 6. b) If the UPS beeps 2 to 4 times every 30 seconds over the five-minute span, the UPS is functioning properly. Press the appliance s power switch to the ON position. No further action is required at this time and skip the Step 6. Continue to test the UPS at regular intervals depending on the age of UPS. Step 6: a) Locate the UPS at one of these four locations: Inner left side of compressor compartment (requires front bottom grill removal) Inner right side of compressor compartment (requires front bottom grill removal) At the back of the compressor compartment (requires removal of rear grill) Upper back or top of cabinet b) Unplug the power cord from the UPS and plug it into an extension cord. c) Plug the extension cord into a wall outlet. d) Press the power switch on the electronic controller to the ON position and verify the display is active. Power Switch Active e) While the appliance is configured this way by bypassing the UPS, it will NOT lock in the event of a power outage. For this reason it is recommended that you carry out one of the following precautionary steps until the UPS battery is replaced and normal operation can resume: Remove all perishable food items from the unit, or Lock the appliance s door by pressing the 'P' and 'U' buttons on the controller for at least 5 seconds or until the lock engages. Keep the unit locked until the UPS battery is replaced. f) Replace the UPS as soon as possible. IMPORTANT READ ALL INSTRUCTIONS AND SAVE FOR FUTURE REFERENCE. REMEMBER TO PERFORM UPS VERIFICATION TESTS ON A REGULAR BASIS. Page 2 of 2
ELECTRONIC FOOD SAFETY LOCK (USGF Freezers, USGR Refrigerators) WARNING IN THE EVENT THE ELECTRONIC SAFETY LOCK HAS LOCKED THE FREEZER/REFRIEGRATOR, THE FOOD IN THE FREEZER/REFRIGERATOR MUST BE INSPECTED TO INSURE ITS SAFETY AND QUALITY FOR CONSUMPTION. ATTENTION IMMEDIATELY AFTER POWERING ON THE FREEZER/REFRIGERATOR, YOU MAY OBSERVE AN HAC SCROLLING MESSAGE ON THE ELECTRONIC CONTROLLER. TO CLEAR THIS MESSAGE, HOLD THE DOWN ARROW BUTTON ON THE CONTROLLER UNTIL THREE DASHES APPEAR, THEN RELEASE THE BUTTON. THE HAC SCROLLING MESSAGE SHOULD NO LONGER APPEAR. ATTENTION TURN THE UN-INTERUPED POWER SUPPLY (UPS) OFF' WHEN THE FREEZER/REFRIGERATOR IS NOT IN SERVICE. DEPLETING THE UPS CHARGE REDUCES ITS LIFECYCLE AND LEADS TO PREMATURE FAILURE. SEE THE LABELS ON THE UNIT AND SECTIONS BELOW ON HOW TO TURN THE UPS ON/OFF. General Description The purpose of the electronic safety lock is to lock the cabinet door in the event of freezer/refrigerator malfunctioning, thereby preventing public access to potentially hazardous food. The electronic controller continuously monitors temperature inside the food storage compartment and locks the door via a mechanical lock if the temperature stays above these limits: 41 F (5 C) for 30 minutes or longer in refrigerators 0 F (-18 C) for 30 minutes or longer in freezers. The electronic safety lock system consists of three major components: Electronic controller. The factory pre-programmed electronic controller monitors temperature inside the food compartment and activates the mechanical lock if food safety temperature limits are reached. See Figure 1 for location. Mechanical lock. It is located under the top display and mechanically locks the cabinet door when it receives an electrical signal from the electronic controller. Un-interrupted power supply (UPS). The purpose of the UPS is to supply electricity to the electronic controller and to the mechanical lock in the event of power failure (black out). It allows the electronic controller to monitor the temperature and lock the door during prolonged power losses and when food safety temperature limits are reached. It s capable of providing power for approximately 4 hours. The UPS does not power any other electrical component of the freezer/refrigerator. To start the freezer/refrigerator, the UPS must be turned ON at the back of the unit (Figure 1). Using a blunt screwdriver or pen, press and hold the UPS button for 2 seconds. The yellow stickers at the back indicate the location of the power button. The UPS button will illuminate green when turned ON. Figure 1 Page 1 of 4 Rev#07; September 2, 2016
In the event the food safety temperature limits have been reached, the lock bar with a tag LOCKED will pop-down and lock the bracket at the door top (Figure 2). To reset the mechanical lock, insert the lock key into the key slot and turn the key counter-clockwise (Figure 3) until the lock bar is pulled back by the lock spring. The alarm buzzer will be also activated and will sound cyclically. To silence the buzzer, press and release any of the four buttons on the electronic controller. Figure 2 Figure 3 Entrapment lock release The lock is equipped with an emergency entrapment release feature. In the event of entrapment the door can be unlocked from cabinet inside by pulling the cable, then pushing against the door (Figure 4). Figure 4 Delaying lock action after product stocking During product stocking, the temperature inside the cabinet may rise above the food safety temperature limits, thereby causing nuisance door locking. To prevent such events, press the door switch repeatedly three times within 5 seconds after product stocking, close the door, and check for a scrolling message HACCP delay on the controller. This message confirms that the delay has been accepted by the electronic controller and is active. This delay will prevent the lock from being activated for a factory pre-set time (30 minutes on refrigerators, 75 minutes on freezers). During this delay time, the freezer/refrigerator should bring temperature in the food storage temperature within normal operating range. Page 2 of 4 Rev#07; September 2, 2016
Accessing and resetting alarms data on the electronic controller The electronic controller records two types of alarms: high temperature and power failures (black outs). If there have been multiple alarms, the electronic controller records up to 10 alarms sorts them form the most recent (H.01) to the oldest (H.10). If there have been more than 10 alarms, the electronic controller deletes alarms on historical basis (newer ones are kept), and keeps the number of deleted alarms in the parameter H.dL by increasing this variable by 1 each time an alarm is deleted. For each recorded alarm, the following data are recorded: Alarm type A.H1, high temperature alarm A.bo, power failure (black out) Alarm start date and time y.dd, dd = 10 99, last two digits of the year M.dd, dd = 1 12, month d.dd, dd = 1 31, day h.dd, dd = 0 23, hour n.dd, dd = 0 59, minute Note: Since the electronic controller is powered through a UPS device, the electronic controller will record power failure when the UPS drains out, not when the freezer/refrigerator losses power on the electric receptacle. Alarm duration E.dd, dd = 0 99, number of hours the alarm lasted e.dd, dd = 0 23, number of minutes the alarm lasted Peak temperature in the cabinet during the high temperature alarm condition (A.H1), or temperature in the cabinet when the power is restored after power failure (A.bo) The chart below (Figure 5.) shows how to navigate through the controller to access alarm data. Figure 5 If an alarm flashes (H.01...H.10) when a user scrolls through the alarm list, the flashing indicates that the alarm has never been reviewed. After pressing the P key on an alarm and reviewing any of its data, the alarm will be displayed solid afterwards to indicate that the alarm has been reviewed. If the alarm is still ongoing at the time of its display, the Page 3 of 4 Rev#07; September 2, 2016
data are displayed but the ongoing alarm will be flashing all time. In the event of non-reviewed and/or still ongoing alarms, the electronic control displays the message HAC, alternating it with the temperature reading. An alarm can be deleted from the controller memory by holding the arrow-down button for more than 5 seconds while one of the alarm data is displayed. After alarm deletion, the controller displays three dashes: ---. Similarly, the value of the H.dL parameter can be reset to 0 by holding the arrow-down button for more than 5 seconds while the value is displayed. All recorded alarms can be deleted at once, by holding the arrow down button in the controller regular display. After all alarms deletion, the controller displays three dashes: ---. Field testing of the food safety lock Proper operation of the food safety lock can be verified by following these steps: 1. Ensure the refrigerator/freezer power cord is plugged into an electrical receptacle and the electronic controller is powered. Make sure the refrigerator/freezer door is closed. 2. Push and hold P and U buttons on the electronic controller simultaneously for 5 seconds. (See figure 6) Figure 6 3. After 5 seconds the alarm should sound and the door lock will activate. 4. To reset the mechanical lock, insert the lock key into the key slot and turn the key counter-clockwise (Figure 3) until the lock bar is pulled back by the lock spring. To silence the buzzer, press and release any of the four buttons on the electronic controller. Page 4 of 4 Rev#07; September 2, 2016