Optional Functions; Asc, Automatic Setpoint Change - Daikin LX10F11B3 Service Manual

https://daikin-p.ru
●Pump down control
Pump down with EEV closed before defrosting
initiation, before heating operation, or during
the start-up control of the compressor. Collect
refrigerant into the receiver, and terminate the
pumping-down when the low pressure becomes
-40kPa (or EOS-LP(T)>30℃ ).
●Automatic pump down
Automatic pump down is executed by pump down
with the LSV closed before replacement of dryer or
collecting refrigerant. Terminate pump down when
low pressure becomes -27kPa.
Then open HSV to raise the pressure on the low
pressure side slightly higher than atmospheric
pressure so that replacing the dryer afterwards can
be done easily. (Refer to paragraph 4.2. Automatic
Pumpdown)

1.5 Optional Functions

1.5.1 ASC, Automatic Setpoint Change

(Option)
●ASC operation
It can be possible to improve quality for some
types of cargo by automatically changing the set
temperature over time.
ASC function can specify the set temperature and
its duration automatically.
● Setting for ASC operation
1. The first set temperature SP1 and its duration TM1
2. The second set temperature SP2 and its duration TM2
3. Since, up to 9 patterns are available for setting
temperature (i.e.up to SP9). There is no duration
limit by the timer for the last set temperature.
＊ For some types of cargoes, dehumidification
control settings can be configured as well.
＊ The temperature inside is raised gradually
(0.5℃ /Hr) to prevent rapid temperature rise
during the pull up operation.
ASC function starts to operate
Pull down
SP1
SP2
Timer TM1
TM1
Count Starts
Pull down
Pull up
SP3
TM2 TM3
1-17
●Precautions when setting ASC operation
Access to ※2-5 ASC settings for ASC operation in
paragraph 2.3.
●Display
During ASC operation "ASC" is displayed in the
SET-MODE area.
Press or key to check the ASC status during
operation display. The example below that among
five sets of temperature settings, the third set is in
operation remaining 15 hours.
CHILLED MODULATION
SET POINT
SET-MODE
2.0 ℃
DEHUMID
SUPPLY
ASC
2.1℃
RETURN 4.1C DEF-INT 12HR
HUMID 75%RH SET-HU 70%RH
▲
HP:1200kPa LP: 20kPa
▼
Operation screen
●Cancellation of ASC operation
1. Cancellation of ASC operation
When configuring ASC to "OFF"
2. When the power is turned off (unit off) during
ASC operation, ASC operation restarts at next
power-on.
3. It is impossible to change the set temperature
and the set duration during ASC operation. To
change the settings, configure ASC settings to
"OFF" once and "ON" again.
4. The last set temperature is displayed on the
modem. The settings cannot be changed via the
modem.
5. The following items are recorded as event log:
ASC "ON" / "OFF", SP1, TM1, dHU1,
"ON" / "OFF", RH1, SP2 ----, SP3 ---
Automatic Setpoint Change
No. SP(C) SHU(%) Hr REMAIN
1 -10.0 -- 100 0
2 0.0 80 10 0
3 10.0 80 20 15
4 15.0 80 50
5 20.0 80 LAST
▲
▼
ASC screen