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HF61G00269SB HTI-0-UM-GB_CW
HIGH TECHNOLOGY IN REFRIGERATION DEVICES
4.2
Starting up for the first time
Electrical connection
•
Open the frontal panel of the units
•
Turn HTI unit QS main switch OFF.
•
Insert the power supply cable using one of the special holes you can find on HTI unit sides and connect it to
QS main switch.
•
Connect user interface to microprocessor J10 connector (you can find it in HTS wiring diagram) using a
telephone cable.
•
Turn HTI unit QS main switch ON.
4.3
Starting operation
Before starting the unit, turn the main switch on, select the operating mode desired from the control panel and press
the ”ON” button on the control panel.
If the unit fails to start-up, check if the service thermostat has been set according to the nominal values
provided.
You should not disconnect the unit from the power supply during periods when it is
inoperative but only when it is to be taken out of service for a prolonged period (e.g. at the end
of the season).
5
Operating Parameters Setting
5.1
Generalities
All the control devices are set and tested in the factory before the unit is dispatched. However, after the unit has
been in service for a reasonable period of time you can perform a check on the operating and safety devices.
The settings are shown in Tab. 4 and Tab. 5.
All servicing of the equipment is to be considered extraordinary maintenance and may be carried
out BY QUALIFIED TECHNICIANS ONLY: incorrect settings may cause serious damage
to the unit and injuries to persons.
The operating parameters and control system settings configurable by means of the microprocessor control are
password protected if they have a potential impact on the integrity of the unit.
Tab. 4
Setting of control devices
Control device
Set point
Differential
Differential air pressure switch (outlet air flow)
Pa
50
30
Differential air pressure switch (dirty filter)
Pa
50
20
Values to be calibrated depending on the application.
