Remote Alarm Terminal; Air Intake Port (Manual) - Phcbi MDF-DU302VX Manual Del Usuario

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 [page 47 – 48].
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 48].
Table 1 The behavior of the remote alarm when pressing Buzzer key
Remote Alarm setting
[pages 30 – 31]
ON:
Non-interlock with Buzzer key
OFF:
Interlock with Buzzer key

Air intake port (Manual)

It may be difficult to open the outer door immediately after closing the outer door. This is due to the
difference in presssure inside and outside of the chamber.
To open the outer door smoothly, follow the procedure below:
1. Loosen the cap on the air intake port by 2 turns, or remove the
cap.
2. Allow about twenty seconds before opening the outer door.
3. Open the outer door.
4. Replace and fasten the cap firmly after closing the outer door.
Improper replacement may cause the temperature to rise or condensation around the air intake port.
The outer door may still not open even if the cap on the air intake port is removed. In this case, remove
the cap and check for frost inside the air intake port. If excessive frost has built up in the air intake port,
remove with the enclosed " stick for air intake port cleaning ". Check and remove excessive frost once a
month. Refer to page 50 for details.
Do not use any tools with sharp edges (such as knives or screw-drivers) to remove the frost in the air
intake port.
Connecting
terminal condition
COM.-N.C.
COM.-N.O.
COM.-N.C.
COM.-N.O.
Use a twisted shielded wire for the connection.
Type; UL 2343, UL 2448, UL 2464, UL2552, UL2623.
Length: 30 m max.
Remote alarm terminal
Abnormal condition
Normal (Including in the cases of power outage and
of where the power plug is pulled out.)
Close Open
Open Close
Close Open
Open Close
When pressing Buzzer key
Open (Maintain in abnormality)
Close (Maintain in abnormality)
Close (Return to normal)
Open (Return to normal)
About 2 laps
Cap
15