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The thermal shock is activated manually through the activation control SH in the "Controls Sub-menu".
In this mode, the device raises the flow temperature to the set value for a certain period of time. The disinfection in progress OUT3 relay and the recirculation
pump management OUT2 relay are always activated during the thermal shock. A thermal shock can be interrupted while it is still in progress, with the
following modes:
- holding down the knob for 10 seconds and confirming the "Disinfection stop” control
- from the "Programming Menu", setting the disinfection control to OFF
- opening the inlet IN2 contact (normally closed)
- remotely through the optional board CS179.
At the end of the thermal shock, the device performs a zero acquisition and returns in water mixing mode indicating the failed thermal shock, if any.
IMPORTANT: Check that the set thermal shock temperature (SH) is lower than the plant protection temperature (T1 Hi).
N.B.: With default settings, the thermal shock will fail.
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5 - Zero and full scale acquisition:
A) Zero acquisition
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In the zero acquisition mode, the device totally closes the adjusting screw to check the correct phasing between the motor and the valve. In full scale
acquisition mode, the device fully opens the adjusting screw so it can check all the stroke (potentially hazardous condition indicate with fixed red LED).
The zero and full scale acquisition controls are activated during the installation or after the "Reset alarms” control.
Additionally, the zero acquisition mode is activated whenever an electric supply failure occurs for at least 60 minutes and at the outlet from any
disinfection/thermal shock. It is recommended to perform the full scale acquisition with shut-off valves closed at the mixing valves inlets.
Reset
In the menu there is a special control to reset to the initial conditions. The history is not reset.
Test
The device performs full strokes in order to check that there are no obstructions during the motor opening and closing strokes. The display shows the
encoder steps and the rotation speed.
It is possible to interrupt the test function at any time pressing the control knob.
IMPORTANT: After each motor installation operation, it is necessary to repeat the zero acquisition operation.
B) Full scale acquisition
ACTUATION RELAY:
The electric supply board CS176 show the relay contacts used for the auxiliary appliances and alarms control.
- OUT1: generic alarm relay (double contact in deviation)
- OUT2: relay for recirculation pump (active in disinfection, thermal shock and selected recirculation time band)
- OUT3: relay for disinfection in progress (active in disinfection and thermal shock)
Actuation relay status summary table:
OPERATING
STATUS
ADJUSTMENT
ADJUSTMENT
WITH ACTIVE
RECIRCULATION
DISINFECTION
THERMAL
SHOCK
MAINS
ABSENCE
ALARM
Relay
Contact status
Contact status
Contact status
Contact status
Contact status
Contact status
OUT1
NO Closed
NO Closed
NO Closed
NO Closed
NC Closed
NC Closed
OUT2
Open
Closed
Closed
Closed
Open
Table “Alarm
management”
OUT3
Open
Open
Closed
Closed
Open
Open
MOTOR
POSITION
MOTOR
POSITION
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