EN - 31
EN - 30
ENGLISH
Setting and Indication
Low Pressure Setting
(1) Turn OFF the operation switch S1.
(2) Power ON
(3) Low Pressure Setting (ON value, OFF value ,Diff.value)
The Low pressure setting at the shipment is as shown in No.3 of the “Standard Pressure Setup Table” below.
Since the Target Low Pressure Setting can be changed, use the following procedure as required.
● Turn OFF the 8P DIP switch (SW13) No.1 and No.3 ~ No.8 (All OFF except No.2)
● Set the rotary switch(SW11) to [STANDARD SETTING].
The 7-segment LED displays [F].
● Press ▲ or ▼ button to select the desired number . . . . Each set value for the number is shown in the table
below.
● Set the rotary switch (SW11) to [OPERATION]
<Standard Pressure Setup Table>
No.
Use
Compartment
temperature
(°C)
Evaporating
temperature
(°C)
ON value
(MPa)
OFF value
(MPa)
Low-press.
Diff. value
(MPa)
Lim value
(MPa)
1
Refrigerator
+3 to +10
-5
3.32
3.08
0.24
2.84
2
Veg, fruits, etc.
+2 to +10
-7
2.98
2.86
0.24
2.62
3
Meat, fish
-5 to 0
-12
2.60
2.48
0.24
2.24
4
Freezer, ice
-30 to -22
-35
1.36
1.24
0.12
1.12
Lim value: Lowest low pressure to cause the compressor to stop. Lim value = OFF value - Diff. value
(4) Target Low Pressure confirm and adjustment
● Turn ON the 8P DIP switch (SW13) No.8.
● Turn OFF the 8P DIP switch (SW13) No.1 and No.3 ~ No.7.
● Set the rotary switch (SW11) to [ON]
The 7-segment LED displays “ON value”.
To change the ON value, press ▲ or ▼ button.
“ON value” range is from 0.76 MPa to 5.00 MPa, and it must be larger than “OFF value” by 0.08 MPa or more.
● Set the rotary switch (SW11) to [OFF].
The 7-segment LED displays “OFF value”.
To change the OFF value, press ▲ or ▼ button.
“OFF value” range is from 0.68 MPa to 4.92 MPa, and it must be smaller than “ON value” by 0.08 MPa or more.
● Set the rotary switch (SW11) to [OPERATION MODE].
The 7-segment LED displays “Diff. value”.
To change the Diff.value, press ▲ or ▼ button.
“Diff. value” range is from 0.08 MPa to 1.84 MPa, and “Lim value” must be 0.58 MPa or more.
● Set the rotary switch (SW11) to [OPERATION].
Then the ON value and OFF value are stored in memory.
01_OCU-CR1000VF8A.indd 31
2019/08/27 10:56:08
