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The controller has been designed to adjust
the feed and drain to keep the unit operating
in the face of changing water quality
in the cylinder and changing electrode
condition even if, in an adverse operational
circumstance, this results in some reduction in
output while the situation exists.
Additionally, the control system has been
designed to prevent the onset of foaming;
C
introducing corrective drainage to keep the
unit working.
Operational Status Indication
With power to the unit and the I/O/II screen
in the "O" (Off) position, the touch screen
display panel will show the STANDBY screen.
STANDBY is part of the normal operation of
the unit - it is ready for operation.
With power to the unit and the I/O/II switch in
the "I" (Run) position, the touch screen display
panel will provide status indication of the
following:-
• STANDBY
• STEAMING
• FILLING
• DRAINING
• SERVICE DUE
• CAUTION ALARM
• CRITICAL ALARM
STEAMING is part of the normal operation
of the unit - current is being supplied to the
electrodes and steam is being produced.
FILLING is part of the normal operation of the
unit - the feed valve is opened to add water to
the cylinder until the electrode current reaches
its target.
DRAINING is part of the normal operation of
the unit - the drain pump is run for a preset
time by the controller. A default drain occurs
after a set number of feed / boil cycles.
An override drain occurs if the electrode
current approaches its high limit and stops
once the electrode current drops below the
cylinder maximum operating current.
Page No 40 of 80
Vapac, Virtuoso VE Humidifier, Installation Manual, EN 2024-01, D301474 Iss 0
SERVICE DUE is part of the normal operation
of the unit - when this screen shows, it is an
indication to the end user that a service is due
and a service engineer should be called out.
CAUTION ALARM (fault code RY8) is initiated
by one of the following conditions; if any one
occurs, the unit will continue to operate:-
• Cylinder low output
• Feed fault
• Drain fault
• No voltage to controller
CRITICAL ALARM (fault code RY6) is raised
if the current consumption increases above a
preset maximum; if this occurs, the unit will be
prevented from operating.
Caution and critical alarms can
only be reset by the service
engineer.
Unit frost protection
A thermistor has been provided within the
electrical section of the unit to operate in
conjunction with the controller to provide frost
protection of the unit. The default setting for
frost protection is for the unit to provide 50%
of its output should the sensed temperature
fall below 5°C.
Taking the unit out of operation
In order to take the unit out of operation e.g.
for maintenance purposes, follow the steps
given below:-
1. If the unit has been switched off due to an
alarm condition, note the message shown
on the display panel.
2. With the power connected to the unit,
manually drain the cylinder by pressing and
holding down the I/O/II switch on the fascia
of the unit in the "II" (Drain) position until
the cylinder has fully drained.
3. Return the I/O/II switch to the "O" (Off)
position.
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