OPERATING AND INSTRUCTIONS MANUAL: B130/10/220H VACCINE REFRIGERATOR REV.1 (WITH TEMPERATURE HOLDOVER FUNCTION) INDEX DESCRIPTION: - INTRODUCTION - UNPACKING AND POSITIONING - OPERATION - GENERAL LAYOUT AND FEATURES - ROUTINE MAINTENANCE - DEFROSTING & CLEANING - SETTING THE THERMOSTATS - PARREMETER SETTINGS - TROUBLE SHOOTING - CONDENSER CLEANING SHEDULE & Instructions for Cleaning the Condenser INTRODUCTION THIS OPERATING AND MAINTENANCE MANUAL PROVIDES INFORMATION ABOUT THE MINUS 40 B90/10/220H VACCINE REFRIGERATOR. THIS UNIT IS SUITABLE FOR USE WHERE MAINS POWER IS SUPPLIED FROM THE NATIONAL GRID. THE B90/10/220H UNIT HAS THE FACILITY TO FREEZE UP TO 4.5 KG OF ICE PACKS IN A 24-HOUR PERIOD. TEMPERATURES IN THE REFRIGERATOR COMPARTMENTS ARE MAINTAINED AT 4 C WITH A TEMPERATURE DIFFERENTIAL OF 2 C. REFRIGERATOR AND FREEZER COMPARTMENTS ARE PROVIDED WITH INSULATED INDIVIDUAL DOORS, IN ADDITION TO THE MAIN CABINET DOOR. THIS UNIT IS SUITABLE FOR AREAS WHERE GRID POWER SUPPLY IS SUBJECT TO FREQUENT INTERRUPTION OF LONG DURATIONS (UP TO 48 HOURS). THIS MODEL IS CONSTRUCTED WITH INTERNAL EUTECTIC TANKS CONTAINING A LOW FREEZING POINT LIQUID. DURING NORMAL OPERATION THE LIQUID FREEZES. WHEN POWER IS DISRUPTED THE TANKS GRADUALY THAW RELEASING "COLD" TEMPERATURE TO THE STORED VACCINE MEDICATION & OTHER MEDICAL PRODUCTS. TEMPERATURES INSIDE THE REFRIGERATOR CAN BE EXPECTED TO REMAIN BELOW 8 C FOR UP TO 24 HOURS AFTER A POWER FAILURE. UNPACKING AND POSITIONING CHECK THE PACKAGE FOR EXTERNAL DAMAGE BEFORE UNPACKING. NOTIFY SUPPLIER AND TRANSPORTER IF DAMAGE IS FOUND. REMOVE ALL EXTERNAL PACKING AND CHECK CASING FOR DAMAGE. OPEN UNIT DOOR AND REMOVE SHELVES AND ACCESSORIES. UN-WRAP SHELVES AND SHELF SUPPORT CLIPS. FIT SHELF SUPPORT CLIPS TO GIVE DESIRED SHELF SPACING. UN-COIL THE POWER LEAD FROM THE REAR COMPARTMENT. MOVE THE UNIT TO THE DESIRED POSITION USING THE LIFTING HANDLES PROVIDED. LEAVE A CLEAR SPACE OF AT LEAST 75 mm BEHIND THE REFRIGERATOR TO ALLOW ADEQUATE VENTILATION. INSERT THE PLUG INTO A CONVENIENT 220 VOLT AC WALL SOCKET. Minus40 is a level 2 B-BBEE contributor & ISO9001:2008 Certified MINUS 40 (PTY) Ltd, 44 Manhattan Street, Airport Industria Ext 2, Western Cape, Republic of South. Africa PO. Box 254, Eppindust 7475, Republic of South Africa Tel: +27 (0) 21 386 2290 Fax: +27 (0)21 386 2295 Email: info@minus40.co.za Web: www.minus40.co.za Minus 40 (Pty) Ltd Reg. No. 89/03489/07 - Vat Reg No: 4090105521 Minus 40 Directors: S E Davison. D N McMurray Michael Werner
OPERATION SWITCH ON THE MAINS POWER SUPPLY. THE COMPRESSOR WILL BE HEARD STARTING AND THE FRIDGE THERMOSTAT DISPLAY WILL LIGHT UP. THE FREEZER THERMOSTAT HAS BEEN SET TO -15 C AS PER FACTORY SPECIFICATION. DIGITAL TEMPERATURE CONTROLLER HAS BEEN PRE-SET IN THE FACTORY TO +4 C. SHOULD YOU NEED TO ADJUST TO A DIFFERENT TEMPERATURE, REFER TO THE CONTROLLER SETTING PAGE. LEAVE THE UNIT RUNNING FOR 3 HOURS TO ALLOW THE INSIDE TO REACH OPERATING TEMPERATURE. LOAD VACCINE PACKAGES AND ICE PACKS AS DESIRED. ENSURE THAT THE INNER DOORS ARE CLOSED WHEN THE MAIN DOOR IS OPEN. FREQUENT POWER FAILURES AND DIMMING OF ELECTRIC LIGHTS INDICATE POOR QUALITY ELECTRICITY SUPPLY.IF THERE IS ANY DOUBT AS TO THE QUALITY OF MAINS ELECTRICAL SUPPLY THE VOLTAGE STABILIZER SUPPLIED SHOULD BE USED. PLUG THE STABILISER INTO THE ELECTRICAL SOCKET THEN INSERT THE REFRIGERATOR PLUG INTO THE STABILIZER SOCKET. GENERAL LAYOUT AND FEATURES LOCKABLE DOOR CATCH FRIDGE COMPARTMENT FREEZER COMPARTMENT (3x) ADJUSTABLE SHELVES INNER DOORS LIFTING HANDLES FRIDGE ELECTRONIC THERMOSTAT FRIDGE THERMOMETER (TO BE USED AS A BACK UP VENTILATED DOOR FOR FOR ELECTRONIC THERMOMETER) MOTOR COMPARTMENT (DRAIN BOTTLE - behind ventilated door - TO BE FITTED WHEN FRIDGE IS INSTALLED ON SITE) ROUTINE MAINTENANCE DAILY PROCEDURES CHECK OPERATING TEMPERATURES OF REFRIGERATOR AND FREEZER COMPARTMENTS, RECORD TEMPERATURES IF REQUIRED. NOTE ANY EXCESSIVE FROST BUILT UP IN EITHER COMPARTMENT. 6mm to 10mm OF FROST IS THE MOST THAT CAN BE TOLERATED WITHOUT AFFECTING REFRIGERATOR PERFORMANCE. DEFROST IF REQUIRED. OPEN REFRIGERATOR INNER DOOR AND CHECK THAT THE FAN IS WORKING. WEEKLY PROCEDURES CHECK CONDENSER (RADIATOR) AND FAN FOR DIRT AND FLUFF BUILD UP. CLEAN AS NECESSARY. FOR CONDENSER CLEANING PROCEDURES SEE DECAL FIXED TO THE REAR OF THE REFRIGERATOR. (Attached is a Condenser Cleaning Schedule to be filled in) DEFROSTING DEFROSTING OF THE REFRIGERTOR ENTAILS THE REMOVAL OF ALL FROST AND ICE BUILD-UP FROM THE INNER SURFACES AND SUBSEQUENT CLEANING, TO REMOVE FREE WATER FROM THE CABINET. TWO METHODS MAY BE EMPLOYED DEPENDING ON THE FACILITIES AND THE TIME AVAILABLE. FIRSTLY REMOVE ALL VACCINES AND ICE PACKS FROM THE CABINET AND STORE IN A SUITABLE REFRIGERATOR OR COLD BOX WITH ICE PACKS. METHOD 1 SWITCH OFF AT THE ELECTRICAL SOCKET. DISCONNECT THE UNIT FROM THE MAINS SOCKET. OPEN INNER AND OUTER DOORS AND LEAVE UNTIL ALL FROST AND ICE HAS COMPLETELY MELTED. THIS PROCESS COULD TAKE UP TO 12 HOURS AND IS BEST ACCOMPLISHED OVERNIGHT. METHOD 2 SWITCH OFF AT THE ELECTRICAL SOCKET. DISCONNECT THE UNIT FROM THE MAINS SOCKET. OPEN INNER AND OUTER DOORS AND WAIT FOR 30 MINUTES UNTIL ICE HAS SOFTENED. USING A PLASTIC BLADED SCRAPER REMOVE ALL EXPOSED ICE AND FROST. Page 2
CLEANING AFTER DEFROSTING MOP ALL SURFACES TO REMOVE FREE WATER AND THEN DRY WITH A SOFT CLOTH. DURING CLEANING AND DRYING OPERATIONS, TAKE CARE TO ENSURE THAT THE REFRIGERATOR THERMOMETER LEAD IS NOT DAMAGED OR STRETCHED. THE EXTERNAL SURFACES MAY BE CLEANED WITH SOAP AND WATER OR HOUSEHOLD DETERGENT SOLUTION. DO NOT USE ABRASIVE CLEANERS OR ANY TYPE OF SOLVENT ON INTERNAL OR EXTERNAL SURFACES. AFTER DEFROSTING AND CLEANING REPLACE THE POWER PLUG AND SWITCH THE UNIT ON. ALLOW 30 MINUTES OPERATION FOR PRE-COOLING AND THEN RE-PACK WITH VACCINES. CHECK THAT THE THERMOSTAT SENSER PROBE WAS NOT DISLODGED FROM THE FAN. REPOSITION IF REQUIRED. SETTING THE THERMOSTATS FREEZER THERMOSTAT (SPDT) - Located in the motor compartment (at the back) THE CIRCULAR DIAL CONTROLS THE TEMPERATURE IN THE FREEZER COMPARTMENT. ROTATE THE DIAL UNTIL THE DESIRED FREEZER TEMPERATURE IS NEXT TO THE MARK ON THE OUTER RING, (-15 C IS THE RECOMMENDED TEMPERATURE SETTING) REFRIGERATOR THERMOSTAT THE REFRIGERATOR THERMOSTAT IS AN ELECTRONIC UNIT WHICH HAS A DISPLAY SCREEN. SHOWN ON THE SCREEN ARE NUMBERS AND SYMBOLS DESCRIBING:- THE REFRIGERATOR TEMPERATURE IS THE PRIMARY DISPLAYED VALUE. TO READ THE SET POINT PRESS AND HOLD THE "SEL" BUTTON UNTIL THE DISPLAY READS "ST-1" AND THE SET POINT (DESIRED TEMPERATURE) WILL BE DISPLAYED FLASHING. TO ADJUST THE SET POINT PUSH THE UP OR DOWN BUTTONS UNTIL THE REQUIRED TEMPERATURE IS DISPLAYED. PUSH "SEL" AGAIN TO SET THE NEW TEMPERATURE. THE SET POINT CANNOT BE ADJUSTED LOWER THAN 1 C OR HIGHER THAN 8 C. o THE CONTROL HAS AN ALARM BUZZER WHICH WILL SOUND IF THE VACCINE TEMPERATURE EXCEEDS THESE VALUES. (+8 C or below +2 C). o TO SILENCE THE BUZZER, PRESS THE DOWN ARROW AND SET BUTTON. Page 3 PARAMETER SETTINGS FOR FULL GUAGE CONTROLLER MT-543Ri plus (VERSION 4) NTC FUN Description Values Unit F01 Access code:123 (one hundred & twenty three) F02 Offset indication 0 C F03 Operation mode of first stage 0 C F04 Minimum set point allowed to the end user (first stage) 1 C F05 Maximum set point allowed to the end user 8 C F06 Control Differential (hysteresis) of first stage 2 C F07 Minimum delay to turn on the first stage output 15 Sec F08 Operation mode of second stage 3 - F09 Minimum set point allowed to the end user (second stage) 1 C F10 Maximum set point allowed to the end user (second stage) 8 C F11 Control differential (hysteresis) of second stage 7 C F12 Minimum delay to turn on the second stage output 180 Sec F13 Delay to enable the alarm when the instrument is powered on 90 Min F14 Reactivation time of alarm F15 Alarm type (on cycle) 10 Sec F16 Alarm type (off cycle) 30 Sec F17 Operation mode of third stage 1 - F18 Minimum set point allowed to the end user (third stage) 0 C F19 Maximum set point allowed to the end user (third stage) 4 C F20 Control differential (hysteresis) of third stage 2 C F21 Minimum delay to turn on the third stage 10 Sec Time base on third stage cycle timer
Activation time for third stage cycle timer Cycle timer on third stage time on Cycle timer on third stage time off Operation mode on cycle timer F27 Operation mode of Buzzer 1 F28 Acting mode of Buzzer (inferior limit) 1 C F29 Acting mode of Buzzer (superior limit) 8 C F30 Buzzer time on 15 Sec F31 Buzzer time off 15 Sec F32 Inhibition time of Buzzer during electrical supply 90 Min Network equipment address RS 485 OBS To inhabit alarms OUT2 and BUZZ press simultaneously Set Point 1: 4.0 Set Point 3: 4.0 Hold until Func appears Button and SET Fo1 = 123 (Password) To SET hold SET key Enter Set Point 1 Press SET again Enter SET Point 3 Low Alarm Heating Comp. Out Comp. Cut in High Alarm 1.0 2 4 4 6 8.0 If internal heating (light) fails Desired Temp. In refr. (compr. Gas) Fails IF BUZZER GOES OFF, CHECK THE TEMPERATURE ON CONTROLLER. IT SHOULD NOT EXCEED 8 C AND MUST'NT DROP BEYOND 2 C. IF IT HAPPENS - WARNING BUZZER WILL SOUND. See TROUBLE SHOOTING on next page Page 4
TROUBLE SHOOTING Symptom Fridge does not run and the controller and the fans does not work and the lights are off. Check Make sure the freezer is plugged in Check for a tripped circuit breaker Fridge does not run, but the controller is on. Fridge is not cold enough Fridge is too cold Fridge is noisy Check the temperature setting on the controller Clean the condenser coils Unplug the refrigerator, wait two hours and plug it in. If you hear it running, a problem is causing the compressor to overheat Check if the evaporator fan is running Listen if the compressor ever runs. If not the compressor might be faulty. Check the temperature setting Ensure that there is enough room for air flow in the fridge. Check that the EXTERNAL condenser fan is running - IF NOT REPAIR or REPLACE Check ice build-up, and if it is put the unit in a manual defrost as noted under MANUAL DEFROST. Check for air flow restrictions in front and at the back of the grille. Clean the condenser coils Check the door seal Check the temperature setting Hissing and popping is normal. Check that the fridge is level Check the drain pan Check the condenser fan (1) Check the evaporator fan (2) Fridge runs continuously Clean the condenser coils (1) Check the door seals Fridge need to be defrost too often Check that the thermostat is regulating See CONDENSER CLEANING SHEDULE on next page Page 5
See Instructions for Cleaning the Condenser on next page Page 6
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