172-65605M-14 (SQ2/SQ4/SQ6) 10 Dec 2019
29
Operation Flow
NOTE: For component names and numbers, refer to the unit/control panel configuration
sections.
Descriptions
On
ON
Flow sensor (7)
Operates according to the
set controllable flow rate.
Factory setting described
in the ‘product
specification document’.
START
button
Operation stopped
・
Cooling system: OFF
・
Steam supply unit: OFF
Is the flow sensor (7) on?
(Is water flowing?)
Is high temp. alarm AL1
off?
Is internal timer T1 on?
(Has the set time passed?)
【
Factory setting: 5 secs
】
Heating operation
・
Cooling system: OFF
・
Steam supply unit: ON
Is internal timer T2 on?
(Has the set time passed?)
【
Factory setting: 2 mins
】
Cooling operation
・
Cooling system: ON
・
Steam supply unit: OFF
Set temp. reached,
maintain operation
・
Cooling system: OFF
・
Steam supply unit: ON
Is low temp. alarm AL2 off?
Cooling operation
・
Cooling system: ON
・
Steam supply unit: OFF
STOP
button
Stand-by
・
Cooling system: OFF
・
Steam supply unit: OFF
High temp. alarm is
triggered
(The temp. exceeds the
set value for longer than
the alarm delay time.)
Cooling system
Cools hot water inside the
heat exchanger by
circulating cold water
(stored before the heat
exchanger), either at
startup or when the high
temp. alarm is triggered.
Cooling system: ON
・
Circulating pump (22):
In operation
・
Solenoid valve (23): Open
Cooling system: OFF
・
Circulating pump (22):
Stopped
・
Solenoid valve (23): Closed
Steam supply unit
Supplies and controls
steam to the heat
exchanger to keep the
outlet temp. at the
specified temp.
Steam supply unit: ON
・
Solenoid valve (11): Open
・
Control valve (10): Open
(during control)
Steam supply unit: OFF
・
Solenoid valve (11):
Closed
・
Control valve (10): Closed
AL2: Low temperature
alarm
Triggered when outlet
water temperature is lower
than set temperature.
Factory setting:
10
°
C below set temp.
AL1: High temperature
alarm
Triggered when outlet water
temperature is higher than
set temperature.
Factory setting:
10
°
C above set temp.
Internal timer T2
Time required to cool hot
water generated by steam
leakage that may occur
when stopping operation.
Internal timer T1
Time required for unstable
flow to be resolved when
water first flows through
the unit.
Low temp. alarm is
triggered
(The temp. has not
reached the ‘low temp.
alarm’ temp. within 2 mins
of startup,
or
the temp.
falls below the set temp.
for longer than the alarm
delay time)
No
No
No
No
Yes
OFF
Yes
On
NOTE: For the ‘Control Panel for
Connection to Circulating
Pump’ option, circulating
pump operation is started.
Stopping (30 seconds)
・
Cooling system: ON
・
Steam supply unit: OFF
Yes
Yes
Yes
NOTE: For the ‘Control Panel for
Connection to Circulating
Pump’ option, circulating
pump operation is stopped.
