Page 4 - PRECAUTIONS FOR SAFE OPERATION
2 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 u...
Page 7 - CAUTION
5 PRECAUTIONS FOR SAFE OPERATION Check the setting when starting up of operation after power failure or turning off of power switch. The stored items may be damaged due to the change of setting. Do not put a container with water or heavy articles on the unit. It may cause injury if the articles fall...
Page 8 - CAUTIONS FOR USAGE
6 CAUTIONS FOR USAGE 1. When the first start-up or start-up after no use of long period, the warning device may not operate, because its Ni-MH battery has completely discharged. This does not denote a malfunction. In this case, continue to operate the unit for about 3 hours, then push the test switc...
Page 9 - ENVIRONMENTAL CONDITIONS
7 ENVIRONMENTAL CONDITIONS This equipment is designed to be safe at least under the following conditions (based on the IEC-1010-1): 1. Indoor use; 2. Altitude up to 2000 m; 3. Ambient temperature 5 o C to 40 o C 4. Maximum relative humidity 80% for temperature up to 31 o C decreasing linearly to 50%...
Page 10 - FREEZER COMPONENTS
8 FREEZER COMPONENTS 8 1 6 2 4 12 15 ( inside ) 14 5 3 11 17 18 16 5 ( inside ) 10 9 7 13
Page 12 - Control panel and keypad
10 FREEZER COMPONENTS Control panel and keypad 1. Buzzer stop key (BUZZER): To silence the audible alarm under alarm condition, press this key. The buzzer during alarm test cannot be silenced by this key. 2. Set key (SET): Temperature setting mode is led by pressing this key and the changeable digit...
Page 13 - INSTALLATION; Installation site
11 INSTALLATION Installation site To operate this unit properly and to obtain maximum performance, install the unit in a location with the following conditions: 1. A location not subjected to direct sunlight Installation in a location subjected to direct sunlight may lead to inadequate cooling. 2. A...
Page 14 - Installation
12 INSTALLATION 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 dirty, clean them with a diluted neutral dishwashing detergent. (Undiluted detergent can damage the plast...
Page 15 - OPTIONAL COMPONENTS; Temperature recorder
13 OPTIONAL COMPONENTS Temperature recorder An automatic temperature recorders is available for this freezer as the optional component. The type of the recorder is MTR-G85. Following shows the attachment procedure. 1. Remove four screws on the front panel and take it off. By removing four screws, ta...
Page 17 - Inventory rack
15 OPTIONAL COMPONENTS Inventory rack The optional inventory rack is useful to store the precious materials in the chamber 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. IR-216U IR-220U Shelf support Shelf ...
Page 19 - TEMPERATURE SETTING; Chamber temperature
17 TEMPERATURE SETTING Chamber temperature Table 1 shows the basic procedure for setting the chamber temperature. Perform key operations in the sequence indicated 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 f...
Page 20 - Alarm temperature setting
18 TEMPERATURE SETTING Alarm temperature setting This unit is provided with the high and low temperature alarm and the temperature at which the alarm is activated is changeable. The following procedure shows the setting of alarm temperature according to the condition below: High temperature alarm: a...
Page 21 - ALARMS & SAFETY FUNCTIONS
19 ALARMS & SAFETY FUNCTIONS This unit has the alarms and safety functions shown in Table 5, and also self diagnostic functions. Table 5. Alarms and safety functions Alarm & Safety Situation Indication Buzzer Safety operation High temperature alarm If the chamber temperature is higher than t...
Page 22 - SETTING OF ALARM RESUME TIME
20 SETTING OF ALARM RESUME TIME The alarm buzzer is silenced by pressing BUZZER key on the control panel during alarm condition (The remote alarm is not silenced). The buzzer will be activated again after certain suspension if the alarm condition is continued. The suspension time can be set by follo...
Page 23 - REMOTE ALARM TERMINAL
21 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 ala...
Page 24 - MONITOR OF FREEZER STATUS
22 MONITOR OF FREEZER STATUS The freezer has a function to monitor the running status of the unit as shown in table 7 below. This is to notice the running status getting worse (not failure). 1. The STATUS lamp is lit when one of the running status shown in table 7 is detected. 2. The S code (--X, X:...
Page 25 - CHANGE OF COMPRESSOR DELAY TIME
23 CHANGE OF COMPRESSOR DELAY TIME The delay time of high and low stage side compressor can be changed to reduce the load on the power line and to facilitate the start-up (reset) of the freezer after power failure. The example in the table is based on the assumption that the delay time is changed to...
Page 26 - ROUTINE MAINTENANCE; Cleaning of cabinet
24 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 consume medication or aerosols from around the unit at the time of maintenance. These may be harmful ...
Page 27 - Defrosting of inside wall
25 ROUTINE MAINTENANCE Defrosting of inside wall The frost is built at the upper portion of the chamber and inner door. The excessive frost possibly make some gap between the cabinet and door gasket, which may cause poor cooling. Remove the frost on the inner door with a scraper enclosed with the un...
Page 28 - TROUBLESHOOTING; DISPOSAL OF UNIT
26 TROUBLESHOOTING If the unit malfunctions, check out the following before calling for service. The chamber is not cooled at all 1. The circuit breaker of power source is active. 2. The voltage is too low. (The status code “--2” is displayed. See page 22.) In this case, call an electrician....
Page 29 - RECYCLE OF RECHARGEABLE BATTERY
27 RECYCLE OF RECHARGEABLE BATTERY The unit contains a rechargeable battery. The battery is recyclable. At the end of it’s useful life, check with you local solid officials option or proper disposal. 1. Location of a nickel-metal-hydride battery This unit is provided a nickel-metal-hydride battery f...
Page 30 - SPECIFICATIONS; PERFORMANCE
28 SPECIFICATIONS Name Ultra-Low Temperature Freezer Model MDF-U32V External dimensions W670 x D875 x H1860 (mm) Internal dimensions W490 x D600 x H1140 (mm) Effective capacity 333 L Exterior Acrylic finish baked on zinc galvanized steel Interior Acrylic finish baked on zinc ga...
Page 31 - Safety check sheet
29 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. Refrigerator contents : Risk of infection: Risk of toxicity: Risk from radioactive sources: (List all potentially hazardous materials that have b...