Page 3 - PRECAUTIONS FOR SAFE OPERATION; WARNING
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 6 - CAUTION
5 PRECAUTIONS FOR SAFE OPERATION Do not climb onto the unit or do not put articles on the unit. This may cause injury by tipping or damage to the unit. Put on dry gloves when you take out refrigerated articles from the freezer. Handing frozen contents or the inside walls with naked bands may cause f...
Page 7 - CAUTIONS FOR USAGE
6 CAUTIONS FOR USAGE 1. Sometimes the alarm may not operate at the time of first start-up. This does not mean malfunction. It is due to the complete discharge of incorporated battery. 2-day continuous operation of the freezer is necessary to charge the battery fully. 2. The digital thermometer of me...
Page 8 - 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 9 - FREEZER COMPONENTS
8 FREEZER COMPONENTS MDF-U537/U537D 1 6 MDF-U333 2 11 3 4 12 9 13 1 11 2 3 4 9 13 6 5 7 5 12 7 10 8 8
Page 11 - Control panel and keypad
10 FREEZER COMPONENTS Control panel and keypad 1. Alarm test key (ALARM TEST): Test key for alarm device. By pressing this key, the alarm lamp is flashed, remote alarm is activated and buzzer sound. This means all alarm function operate correctly. 2. Buzzer stop key (BUZZER): To silence the audible ...
Page 12 - 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 13 - 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 neutral detergent and wipe it up with a wet cloth. 2. Adjust the leveling feet E...
Page 14 - OPTIONAL COMPONENTS; Temperature recorder
13 OPTIONAL COMPONENTS Temperature recorder WARNING Always disconnect the power supply to the unit prior to attachment of a temperature recorder in order to prevent electric shock or injury. An automatic temperature recorders is available for the freezer as the optional component. The type of the re...
Page 19 - REMOTE ALARM TERMINAL
18 REMOTE ALARM TERMINAL WARNING Always disconnect the power supply cord before connecting an alarm device to the remote alarm terminal. The terminal of the remote alarm is installed at the back of the unit. The alarm is generated from this terminal. Contact capacity is DC 30V, 2 A. Contact output: ...
Page 20 - TEMPERATURE SETTING; Chamber temperature
19 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 -25 o C. Note: The unit is set at the f...
Page 21 - Key lock function
20 TEMPERATURE SETTING Key lock function This unit is provided with the key lock function. When the key lock is ON, change of temperature setting through the key pad is not available. The key lock is set in OFF at the factory. Display Mode Function Key lock is OFF Enable to change of temperature set...
Page 22 - Alarm temperature setting
21 TEMPERATURE SETTING Alarm temperature setting This unit is provided with both high and low temperature alarms. The temperature at which the alarm is activated may be changed. The available set range for high temperature alarm is between +5 o C and +15 o C, and -5 o C and -15 o C for low temperatu...
Page 23 - ALARMS & SAFETY FUNCTIONS
22 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 higherthan the...
Page 24 - SETTING OF ALARM RESUME TIME
23 SETTING OF ALARM RESUME TIME The alarm buzzer and remote alarm are silenced by pressing BUZZER key on the control panel during alarm condition. The buzzer and remote alarm will be activated again after certain suspension if the alarm condition is continued. The suspension time can be set by follo...
Page 25 - 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 26 - TROUBLE SHOOTING; DISPOSAL OF UNIT
25 TROUBLE SHOOTING 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? (In this case, call an electrician.) 3. The power switch is not ON. 4. The large amo...
Page 27 - SPECIFICATIONS
26 SPECIFICATIONS Name Biomedical Freezer Model MDF-U333 MDF-U537 MDF-U537D External dimensions W614 x D733 x H1620 (mm) W804 x D772 x H1802 (mm) W804 x D772 x H1802 (mm) Internal dimensions W490 x D485 x H1290 (mm) W658 x D607 x H1272 (mm) W658 x D607 x H589 (mm) Upper chamber W658 x ...
Page 28 - PERFORMANCE
27 PERFORMANCE MDF-U333 Cooling performance -30 o C (ambient temperature; 35 o C, no load) Temperature control range -20 o C to -30 o C Rated voltage AC 110 V AC 115 V AC 220 V AC 220 to 240 V Rated frequency 60 Hz 60 Hz 60 Hz 50 Hz Rated power consumption 150 W 140 W 140 W 155 W Noise level 3...
Page 29 - Safety check sheet
28 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 sto...
