Ultralow Temp Freezer

1. Digital temperature indicator:temperature.

2. Status monitor lamp (STATUS): This lamp lights when environmental condition or status gets worseor the unit is out of normal operation

3. Battery check lamp (BATTERY): This lamp lights to recommend the battery replacement. Thislamp blinks when a fan motor is replacement. For the replacement, consult our sales representative oragent

4. Alarm lamp (ALARM): This lamp is flashed during alarm condition

5. Filter check lamp (FILTER):accumulated on the condenser filter. When this lamp lights, clean the condenser filter following theprocedure on page 22.6. Numerical value shift key (shift. "ON-OFF" of key lock can be selected by pressing this key in the key lock setting mode. Bypressing this key for more than 5 seconds in the temperature display mode leads setting mode for alarmtemperature, alarm resume time ,compressor delay time and door alarm delay time. Refer to page 15,16,17,19 and 20 for details respectively.

7. Digit shift key (lock setting is available by pressing this key for more than 5 seconds in the temperature display mode.Refer to page 15 for details.

8. Set key (SET): Temperature setting mode is led by pressing this key and the changeable digit isflashed.By pressing this key again, the setting is memorized.temperature display mode automatically when 90 seconds has passed without any key operation.

9. Status key (STATUS): By pressing this key in the event of the status monitor lamp ON, the statuscode is displayed on the digital temperature indicator. This key is not effective when the freezer isrunning normally. See page 18 for details

.10. Alarm test key (ALARM TEST): To check the alarm system during freezer operation. Pressingthis key with the battery switch ON gets the alarm lamp to flash, the remote alarm to operate, and thebuzzer to sound.

11. 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. But the remote alarm is not canceled.1

2. Door check lamp (DOOR): This lamp lights when the outer door is open