Starting, User Interface And Basic Functions; Starting; Shutdown/Standby; Autotest - Carel humiSonic User Manual

ENG

6. STARTING, USER INTERFACE AND BASIC FUNCTIONS

Before starting the humidifier, check:
water connections: in the event of water leaks, do not start the
humidifier before having resolved the problem and restored the
connections;
electrical connections.

6.1 Starting

See chap. "Electrical connections"
1 The humidifier, once powered and enabled for production (remote
ON/OFF/humidistat, terminal M14; ON/OFF from user terminal; ON/
OFF from serial), is ready for operation.
2 If there are no other external connections, the humidifier will start,
and operation will only stop if the enabling signal (M14) is no longer
present.
3 If the temperature and humidity probe (TH, optional) is connected
to terminal G, the humidifier will operate until the humidity set point
(pre-set at 50% rH) or the dew point temperature set point (pre-set at
10°C/50°F) is reached, depending on the control mode set. See chap.
"Operating principles".

6.2 Shutdown/Standby

1 To switch the humidifier off, disconnect power
2 If connected to the power supply, the humidifier goes into standby
when:
• the remote ON/OFF contact is open
• the TH probe is present and the humidity/dew point temperature
set point has been reached;
• the ON/OFF contact is open or disabled via serial (see chap.
"Humidifier control via network") or disabled from the keypad;
• a modulating signal is used (optional card) and there is no request.
When the humidifier is in standby, the unit is emptied automatically.
When in standby the fan stays on for 5 min.

6.3 Autotest

Whenever the humidifier is first started (from off ), if enabled and humidity
production is required, a test cycle is run. A complete fill and drain cycle
is performed, during which the level sensor is monitored; if the test is
successful, regular atomised water production will begin. In the event of
errors, production is stopped. See the Alarm table.

6.4 ON/OFF switch lights

The ON/OFF switch has 2 lights: blue and red:
BLUE LED
Fixed
Flashing slowly*
Flashing slowly and dimmed
Flashing quickly**
*Flashing slowly: 1s ON and 1s OFF
**Flashing quickly: 0.2s ON and 0.2s OFF
The red light means an alarm is present. For the table of alarms, see the
corresponding chapter.

6.5 Disabling

The humidifier can be disabled in different ways:
• opening contact M14.1 and M14.2 (OFF from contact):
• from the user terminal by pressing Esc for 5 s (OFF from keypad);
• from the supervisor via RS485 serial;
• when there are active alarms.
Direct version for room applic. +0300062EE - rel. 1.4 - 24.09.2020
Description
Atomisation in progress
Unit disabled
Set point reached
Transitory status with atomisation
temporarily paused
(e.g. autotest, washing)

6.6 Reset tank hour counter

NOTICE
: this operation must only be carried out by authorised personnel.
The humidifier is fitted with an hour counter that records operation.
After a set number of hours (5000), a signal is activated to indicate
maintenance should be performed on the tank and operation of the
piezoelectric elements checked (see chap. "Maintenance and spare parts"
and "Alarms"). If the display terminal is connected to the humidifier, reset
the hour counter on the terminal as described in par. "Reset hour counter
from display". Otherwise, if the terminal is not available, the hour counter
can be reset by accessing the electronic control board.
WARNING: electric shock hazard. Before making the electrical
connections, the appliance must be disconnected from the mains power
supply. Electrical disconnection must be verified by measurement.
To reset the hour counter at any time, proceed as follows:
1. Switch the humidifier OFF;
2. Close the feedwater tap and wait for the tank to empty completely;
3. Unplug the connector (figure) from the control board;
4. Open the ON/OFF contact;
5. Switch on the humidifier (with the connector unplugged from the
control board). Both lights on the unit power button, blue and red,
will flash;
6. Close the ON/OFF contact, the blue and red lights remain on steady;
7. Switch the humidifier OFF;
8. Plug the connector (figure) onto the board, making sure it is the right
way round;
9. Switch the humidifier ON.

6.7 Automatic washing

The humidifier automatically runs a washing cycle at intervals in operating
time set by parameter b1 (default 12 hours, parameter b0 can be used to
convert the unit of measure of b1 from hours to minutes, see b0 in the
parameter table). The washing cycle involves a complete drain cycle, a
phase in which fill and drain are activated together (default 1 minute,
parameter b3) to flush out any residues in the tank, a complete fill cycle
and finally another complete drain cycle.
During this operation, atomised water production is stopped.

6.8 Washing due to inactivity

If the humidifier remains inactive (on but in standby) for an extended
period (parameter b2, default 24 hours) a washing cycle is performed, as
described in the previous paragraph. This cleans the tank of any residues
(e.g. dust) that may have formed during the period of inactivity. Parameter
b0 can be used to set the time when this washing cycle is performed.
By default, the washing cycle is run after 24 hours (continuous) of no
operation, i.e. the humidifier is in standby. This is because the humidifier is
normally connected to a reverse osmosis system, which needs to operate
frequently in order to avoid malfunctions. Parameter b0 (see parameter
b0, reverse osmosis) can be set so that the washing cycle is performed
when first restarting after a period of continuous inactivity set by b2.
14
Fig. 6.k