Sanyo MDF-U7486SC manual

- 42 - Ultra-Low T emperature Freezer INSTRUCTION MANUAL MDF-U7486S MDF-U7486SC MDF-U5486S MDF-U5486SC MDF-U7486S[...]

- 43 - 1 CONTENTS I N T R O D U C T I O N P . 2 PRECAUTIONS FOR SAFE OPERATION P. 3 ENVIRONMENTAL CONDITIONS P. 7 FREEZER COMPONENTS P. 8 Control panel P.10 INSTALLATION SITE P.11 INSTALLATION P.12 START-UP OF UNIT P.13 CHAMBER TEMERATURE SETTING P.14 KEY LOCK FUNCTION P.14 ALARM TEMPERATURE SETTING P.15 SETTING OF ALARM RESUME TIME P.16 REMOTE ALA[...]

- 44 - 2 INTRODUCTION  Read this manual caref ully before using the appliance and follow the inst ructions for safety operation.  Sanyo never guarantee any safety if the appliance is used for any objects other than intended use or used by any procedures other than those mentioned in this manual.  Keep this manual in an adequate place to re[...]

- 45 - 3 PRECAUTIONS FOR SAFE OPERATION It is imperative that the user complies with this manual as it contains important safety advice. Items and procedures are described so that you can use this unit correctly and safely. If the precautions advised are followed, this will prevent possible injury to the user and any other person. Precautions are i[...]

- 46 - 4 PRECAUTIONS FOR SAFE OPERATION Do not use the unit outdoors. Current leakage or electric shock may result if the unit is exposed to rain water. Only qualified engineers or serv ice personnel should install the unit. The installation by unqualified personnel may cause electric shock o r fire. Install the unit on a sturdy floor and take an a[...]

- 47 - 5 PRECAUTIONS FOR SAFE OPERATION Ensure you do not inhale or consume medication or aerosols from around the unit at the time of maintenance. These may be harmful to your health. Never splash water directly onto the unit as this may cause el ectric shock or short ci rcuit. Never put containers with liquid on the unit as this may cause electri[...]

- 48 - 6 PRECAUTIONS FOR SAFE OPERATION Use a dedicated po wer source (a dedicated ci rcuit with a breaker) as in dicated on the rating label attached to the unit. A branched circuit may cau se fire resulting from abnormal heating. Connect the po w er supply plug to the po wer source firmly after removing the dust on the plug. A dusty plug or impro[...]

- 49 - 7 ENVIRONMENTAL CONDITIONS This equipment is designed to be safe at least under the followi ng conditions (based on the IEC 61010-1):  Indoor use;  Altitude up to 2000 m;  Ambient temperature 5 o C to 40 o C  Maximum relative humidity 80% for temperature up to 31 o C decreasing linearly to 50% relative humidity at 40 o C;  Mai[...]

- 50 - 8 FREEZER COMPONENTS Rear side Power cord 12 1 2 5 6 9 (inside) 10 13 4 15 13 (inside) 8 11 7 3 17 18 16 19 14[...]

- 51 - 9 FREEZER COMPONENTS 1. Outer door: To open the outer door, grip the handle. On clo sing, lock the outer door latch completely. 2. Inner door: The operation of the i nner door should be quick to minimize the temperature ri se in chamber. Lock the inner door latch completely when the inner doo r is closed. The inner door is removable for clea[...]

- 52 - 10 FREEZER COMPONENTS Control panel 1. Digital temperature indicator: This indicator shows the prese nt chamber temperature or set temperature. 2. Battery check lamp (BATTERY): This lamp flickers to recommend the battery replacement. For the replacement, consult Sanyo sales representative or agent. 3. Alarm lamp (ALARM): This lamp is flashed[...]

- 53 - 11 INSTALLATION SITE T o operate this unit properly and to obtain maximum performance, install the unit in a locati on with the following conditions:  A location not subjected to direct sunlight Do not install the unit under direct sunlight. Installation in a location subjected to direct sunlight cannot obtain the intended performance. ?[...]

- 54 - 12 INSTALLATION 1. Remove the packaging materials and tapes Remove all transportation packaging materials and tapes. Open the doors and ventilate the unit. If the outside panels are di rty, clean them with a diluted neutral dishwa shing detergent. (Undiluted detergent can damage the plastic components. For the dilution, refer to the instruct[...]

- 55 - 13 START-UP OF UNIT Follow the procedures for the initial and consequent operations of the unit. 1. Turn off the switch of the back-up system (optional component) if it is installed. 2. Connect the power supply cord to the dedicated outlet having appropriate rating with the chamber empty, and turn on the power switch on the freezer. 3. Turn [...]

- 56 - 14 CHAMBER TEMPERATURE SETTING Table 1 shows the basic procedu re for setting the chamber temperature. Perform key opera tions in the sequence indi cated in the table. The example in the table is based on the assumption that the desired temperature is -75 o C. Note: The unit is set at the factory that the chamber temperature -80 o C. Table 1[...]

- 57 - 15 ALARM TEMPERATURE SETTING This unit is provided with the hig h and low temperature alarm a nd the temperature at which the alarm is activated is changeable. The following proced ure shows the setting of alarm temperature according to the condition below: High temperature alarm: activates at the temperature 5 o C higher than the set temper[...]

- 58 - 16 SETTING OF ALARM RESUME TIME The alarm buzzer is silenced by pressi ng alarm buzzer stop key (BUZZER) on the control panel du ring alarm condition. (A remote alarm is continuing the operation.) The buzzer will be activated again after certain su spension if the alarm condition is continued. Th e suspension time ca n be set by following th[...]

- 59 - 17 REMOTE ALARM TERMINAL The terminal of the remote alarm is installed at the lower left side of the unit. The alarm is outputted from this terminal. Contact capacity is DC 30V, 2 A. Contact output: between COM. and N.O. between COM. and N.C. At normal Open Close At abnormal Close Open Note: • The alarm buzzer is silenced by pressi ng alar[...]

- 60 - 18 SETTING OF COMPRESSOR DELAY TIME The delay time of high and low stage side compre ssor can be changed to reduce the loa d on the power line and to facilitate the start-up (reset ) of the freezer after power fa ilure. The example in the table is based on the assumption that the delay time is changed to 4 minutes. (The delay time is set in [...]

- 61 - 19 ALARMS & SAFETY FUNCTIONS This unit has the alarms and safety functions shown in Table 7, and also self diagnostic functions. Table 7. Alarms and safety functions Alarm Situation Indication Buzzer Safety functions High temperature alarm If the chamber temperature is higher than the temperature at which the high temperature alarm is ac[...]

- 62 - 20 ROUTINE MAINTENANCE WARNING Always disconnect the power supply to the unit prior to any repair or maintenance of the unit in order to prevent electric shock or injury. Ensure you do not inhale or co nsume medication or aerosols from around the unit at the time of maintenance. These may be harmful to your health. Cleaning of cabinet 㻊 Cl[...]

- 63 - 21 ROUTINE MAINTENANCE Defrosting of inside wall The frost is built at the upper portion of the chamb er and inner door. The excessive frost possibly make some gap between the cabinet and magnetic door ga sket, which may cause poor cooling. Remove the frost on the inner door with a scraper enclosed wi th the unit. Following shows the procedu[...]

- 64 - 22 ROUTINE MAINTENANCE Cleaning of air intake port The cap of the left side i s turned counterclockwise (Counterclockwi se direction), a nd this product is removed, and the outer air is adopted into the chamber, and it opens a outer d oor. Therefore, frost is easy to be settled around the air intake port inside the chamber. Clean it in the c[...]

- 65 - 23 TROUBLE SHOOTING If the unit malfunctions, check out the following before calling for service. Malfunction Check/Remedy The chamber is not cooled at all 㻊 The circuit breaker of power source is active. 㻊 The voltage is too low (In this case, call an electri cian). 㻊 The power is not supplied. 㻊 The breaker is free. 㻊 The large a[...]

- 66 - 24 DISPOSAL OF UNIT WARNING If the unit is to be stored unused in an unsupe rvised area for an extended perio d ensure that children do not have access and doors canno t be closed completely . The disposal of the unit should be accomplished by appropriate personnel. Alw ays r emo ve doors to prevent accidents such as suffocation. Recycle of [...]

- 67 - 25 DISPOSAL OF BATTERY Location of a nickel-metal-hydride battery This unit is provided a nickel-metal-hyd ride battery for the power failure warning device. The battery is located in the electrical box inside the cover on the lower left side. (Fig. 1) The high voltage compone nts are enclosed in the el ectrical box. The cover should be remo[...]

- 68 - 26 BACK-UP SYSTEM (OPTION) WARNING As with any equipment that uses CO 2 gas, there is a likelihood of oxygen depletion in the vi cinity of the equipment. It is important that y ou assess the work site to endure there is suitable and sufficient ventilation. If restricted ventilation is suspected, then other methods of ensuring a safe environm[...]

- 69 - 27 TEMPERATURE RECORDER (OPTION) Installation of MTR-85H/MTR-G85 Contact Sanyo sales representative or a gent for the attachment of an automatic temperature recorder. : INTERFACE BOARD (OPTION) Installation of MTR-480/MTR-L03 Contact Sanyo sales representative or agent for the attachment of a interface board. : Note: 㸨 When a data transmit[...]

- 70 - 28 INVENTORY RACK (OPTION) The optional inventory rack is useful to store th e precious materials in the ch amber effectively. When the rack is used, it is necessary to adjust the height of the shelves. Set the shelf support as shown in the figure below. Shelf support Shelf stopper NO. 8 under the seco nd screw from the top No. 3 under the f[...]

- 71 - 29 SPECIFICATIONS Name Ultra-Low Temperature Freezer Model MDF-U5486S MDF-U5486SC External dimensions W890 x D870 x H1990 (mm) Internal dimensions W630 x D600 x H1280 (mm) Effective capacity 483 L Exterior Painted steel Interior Painted steel Outer door Painted steel Inner door ABS resin panel with stainless frame, 2 doors Shelf Stainless st[...]

- 72 - 30 SPECIFICATIONS Name Ultra-Low Temperature Freezer Model MDF-U7486S MDF-U7486SC External dimensions W1130 x D875 x H1990 (mm) Internal dimensions W870 x D600 x H1280 (mm) Effective capacity 668 L Exterior Painted steel Interior Painted steel Outer door Painted steel Inner door ABS resin panel with stainless frame, 2 doors Shelf Stainless s[...]

- 73 - 31 PERFORMANCE Model MDF-U5486S MDF-U5486SC (for U.S.A. only) MDF-U7486S MDF-U7486SC (for U.S.A. only) Cooling performan ce -86 o C at the center of the chamber (ambient temperature; 30 o C, no load) Temperature control range -50 o C to -86 o C (ambient temperature; 30 o C, no load) Power source 220 V, 60 Hz Rated power consumption 1180 W 12[...]

- 7 4 - 32 CAUTION Please fill in this form before servicing. Hand over this form to the service engineer to keep for his and your safety. Safety check sheet 1. Freezer contents : Risk of infection: Risk of toxicity: Risk from radioactive sources: (List all potentially hazardous materials that have been stored in this un it.) Notes : 2. Contaminati[...]

SANY O Electric Co., Ltd Printed in J apan[...]