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3.3.3 - How to change the temperature unit
The temperature unit can be changed as follows, even while the
chiller is operating.
Fig. 12 - Display example
High-temperature
generator
temperature
To change °C
Press the "SET" key to select °C mode and again to select the °F mode
3.3.4 - Changing remote signal setting (continuous, pulse etc.)
After wiring of the remote signal, the control board shown
below should be set. Refer to field wiring diagram.
Fig. 13 - Display example
Control board setting
Remote
signal type
(1)
(2)
(3)
(4)
(5)
To change the static mode
By pressing the SET key, the
static mode is selected.
To change the positive mode
Press SET key to select positive mode.
16
Press the " SET " key
for about 2 seconds.
Press
or
key.
Press the SET key
for about 2 seconds.
Press
or
key if you need.
Press the SET key
for about 2 seconds.
And push
or
key.
To change °F
free
free
High-temperature generator temperature
Press the SET key for about 2 seconds.
Press the
or
key.
Press the SET key for about 2 seconds.
Press the
or
key.
Press the
or
Press the SET key for about 2 seconds.
Then press the
or
key.
To change pulse mode
By pressing the SET key, the pulse
mode is selected.
Press the SET key for about 2 seconds.
Then press the
or
key.
To change the negative mode
Press SET" key to select negative mode.
3.4 - Cooling operation
3.4.1 - Pre-operation checks
Please check the following items before starting operation:
•
Check the setpoint of the chilled-water leaving
temperature. Make sure that the chilled-water leaving
temperature is set as specified. For the indication of the set
value, please refer to chapter 3.8.
•
Check the steam and steam drain equipment
-
Make a daily inspection (refer to chapter 4).
-
Check that the steam valve(s) is (are) open.
Fig. 14 - Control board
STOP
CHILLER
ABS PUMP
REF PUMP
PURGE PUMP
STAND BY
DILUTION
SAFETY CIRCUIT
CHILLER ALARM
POWER
Legend
1
Remote key
2
Local key
3
Stop key
4
Run key
NOTE: If the chilled-water pump, cooling water pump, and
chiller are interlocked, each pump runs automatically when
starting the chiller. If not, the start sequence must be:
Chilled-water pump, cooling water pump, chiller.
3.4.2 - Start cooling operation
Refer to Figure 14.
key.
Local operation mode
•
Press the "LOCAL" key on the chiller control board. The
"LOCAL" indication light of the key is on.
•
Keep pressing the "RUN" key for more than a second and
make sure that the "RUN" indicator lightp of the key is on.
•
Automatic operation starts.
Remote operation mode
•
Press the "REMOTE" key on the chiller control board.
The "REMOTE" indicaton light of the key is on.
•
Turn on the start switch on the remote control panel for
the field supply. The indicator light of the "RUN" key on
the chiller control board is on.
•
Automatic operation starts.
RUN
SET
BACK
REMOTE
BUZZER STOP
LOCAL
OPERATION
STOP
RUN
3
4
1
2
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