ALARMS & SAFETY FUNCTIONS
This unit has the alarms and safety functions shown in Table 4, and also self diagnostic functions.
Table 4 Alarms and safety functions
Alarm & Safety | Situation | Indication | Buzzer | Safety operation | |
High temperature | If the chamber temperature | Alarm lamp is flashed. | Intermittent tone after | Remote alarm is | |
deviates by +10oC (factory set, | Temperature indicator is | activated after a delay | |||
alarm | changeable) from setting. | flashed. | a delay 15 minutes. | of 15 minutes. | |
|
| ||||
Low temperature | If the chamber temperature | Alarm lamp is flashed. | Intermittent tone after | Remote alarm is | |
deviates by | Temperature indicator is | activated after a delay | |||
alarm | changeable) from setting. | flashed. | a delay 15 minutes. | of 15 minutes. | |
|
| ||||
| In the case of power failure. |
|
|
| |
Power failure alarm | When power switch is turned OFF. | Alarm lamp is flashed. | Intermittent tone | Remote alarm is | |
When the power to the unit is | activated. | ||||
|
|
| |||
| disconnected. |
|
|
| |
Door alarm | When the door is open. | Door check lamp is lit. | Intermittent tone after | ||
a delay of 2 minutes. | |||||
|
|
|
| ||
| If a key operation is not performed | Chamber temperature is |
| Setting mode is | |
Auto return | for about 90 seconds in each setting | ||||
displayed. | canceled. | ||||
| mode. |
| |||
|
|
|
| ||
Key lock | When the key lock is ON (L1). | Key input is unable. | |||
|
|
|
|
| |
|
| Alarm lamp is flashed. |
| Remote alarm is | |
| If the thermal sensor goes |
| activated. | ||
| E1 and LO are displayed | Intermittent tone | |||
| open circuit. | Operation is keeping | |||
| alternately. |
| |||
Thermal sensor |
|
| continuously. | ||
|
|
| |||
Abnormality |
| Alarm lamp is flashed. |
| Remote alarm is | |
| If the thermal sensor goes |
| activated. | ||
| E1 and HI are displayed | Intermittent tone | |||
| short circuit. | Operation is keeping | |||
| alternately. |
| |||
|
|
| continuously. | ||
|
|
|
| ||
|
|
|
| Remote alarm is | |
| In case of failure of compressor |
|
| activated. | |
Compressor temp. | cooling fan motor. | Intermittent tone | Compressor stops | ||
Abnormality | In case of abnormal high ambient | running when the | |||
|
| ||||
| temperature. |
|
| temperature about | |
|
|
|
| 95oC. |
Note:
￭The alarm can be canceled by pressing the alarm buzzer stop key (BUZZER), but the remote alarm cannot be silenced.
￭After a power failure, the unit will resume operation with the set value that was in place before power failure occurred.
16
