Haier DW-150W200 Samples storage and instructions, Preparations required by safe samples storage

Samples storage and instructions

Only after the freezer operates stably after commissioning and making sure that internal temperature meets storage requirements can samples be put into the freezer in batches.

The freezer must not be loaded with samples over 1/5 of its effective capacity at a time. If samples are too hot, they should be pre-cooled down to required temperature by other equipment before being put into the freezer. After loading the freezer with samples, set internal temperature 5℃ higher than the temperature of samples, keep it running until 8 hours after normal starting/stopping, and then decrease the temperature setting by -5~-10℃; continue such a cycle until reaching required temperature, and 12 hours later put the 2nd batch of samples into the freezer.

The freezer is not used for quick freezing, but for storage and preservation. Therefore, do not try to freeze relatively hot samples, or that may result in damage to samples and the freezer. What’s worse, that may result in destroy of samples and compressor burn-out. Furthermore, it is advisable to put fewer samples into the freezer at a time.

Note:

1.Do not put all the samples into the freezer at a time, but put 1/5 each time at an interval of 24 hours.

2.Be sure to wear special gloves in handling samples to avoid frostbite.

Preparations required by safe samples storage

For safe samples storage, the following preparations must be made to deal with emergencies such as power supply failure and equipment damage:

1.Install a backup LN (liquid nitrogen) system.

2.Provide a LN tank (can be preserved for 3~4 hours).

Safe samples storage

1.In an emergency, immediately move the samples stored in the freezer to a safe place and keep them well. The manufacturer shall not be liable for any sample damage resulting from the user’s failure to follow the instructions at any time.

2.Ensure that a standby super low temperature freezer or LN tank is available in the vicinity for emergencies. The possible emergencies include equipment damage or fault due to its defects, or equipment damage for external factors such as fire hazard, power failure, etc.

8-24