14
FREEZER COMPONENTS
Remote alarm terminal
The alarm of this unit can be informed at a remote location from this unit by connecting the external alarm
device to the remote alarm terminals. For the type and behavior of remote alarm output [pages 46 - 47].
The terminal of the remote alarm is installed at the right side
of the unit (See the figure on the point). The alarm is outputted
from this terminal. Contact capacity is DC 30 V, 2 A.
When Buzzer key is pressed, the behavior of the remote
alarm is showed in Table.1.
Note:
• In the door alarm, the remote alarm does not work [page 47]
• It is recommended to use standard signal and interface cables
with a maximum length of 30 meters.
Table 1 The behavior of the remote alarm when pressing Buzzer key
Remote Alarm setting
[pages 29 – 30]
Connecting
terminal
Normal
condition
Abnormal condition
(Including in the cases of power outage and
of where the power plug is pulled out.)
When pressing Buzzer key
ON:
Non-interlock with Buzzer key
COM.-N.C.
Close
Open
Open (Maintain in abnormality)
COM.-N.O.
Open
Close
Close (Maintain in abnormality)
OFF:
Interlock with Buzzer key
COM.-N.C.
Close
Open
Close (Return to normal)
COM.-N.O.
Open
Close
Open (Return to normal)
Air intake port (Manual)
The difference in pressure inside and outside of the chamber is adjusted automatically to open the outer door
smoothly.
However, if the door becomes heavy and difficult to open, follow the procedure below.
1.
Turn the cap on the left side counterclockwise about two laps.
(Or remove the cap.)
2.
Allow about twenty seconds before open the outer door.
3.
Close (or replace) the cap when the door operation is
completed.
Remove the cap on the air intake port and check for the frost inside
the air intake port.
If excessive frost has built up in the air intake port, remove with a
"Stick for air intake port cleaning" [page 49].
CAUTION
For removing the frost in the air intake port, do not use a tool with sharp edge such as a knife or a screw
driver.
Remote alarm terminal
About 2 laps
Cap
