User manual

28
ENG
“UEX-PLUS” +03U220621 - rel. 1.4 - 04.08.2009
installeruserservice
When an alarm is activated, the alarm button starts ashing intermittently.
In these conditions, pressing the alarm button once displays the type of
alarm (and the code, in line with the CAREL humidier standard).
In the case of potentially dangerous alarms, the controller automatically
stops the production of steam. For some alarm events, the alarm relay is also
activated at the same time as the signal (see the table below).
Once the causes of the alarm are no longer present, the humidier and the
alarm relay output can be reset automatically or manually, according to the
type of fault, while the message displayed is reset manually (see the table
below). Even if no longer active, the alarm status continues to be displayed
until the “reset display” button is pressed.
Active alarm states cannot be reset.
If more than one alarm is active, the display shows all the codes in sequence,
after having pressed the alarm button once and then pressing the “UP” or
“DOWN” button.
alarms displayed (2)= alarm
relating to cylinder 2
meaning cause
solution reset
alarm relay consequence
Alarm:EP
LowProduction
(Cylinder1(2)Off)
Low production
alarm
excessive reduction
in production
cylinder completely depleted or water with
excessive foam. Perform maintenance on
the cylinder
Manual
active
Stop
production
Alarm:EF
Lackofwater
Cylinder1(2)
No water no supply water 1. check that the supply hose from the
mains to the humidier and the internal
hoses are not blocked or restricted and
that there is sucient pressure (0.1 to 0.8
MPa, 1 to 8 bar);
2. check the operation of the ll solenoid
valve;
3. check that the steam outlet is not
operating with excessive backpressure,
preventing the ow of water into the
cylinder by gravity;
4. check that the steam outlet hose is not
restricted and that there are no pockets of
condensate
Automatic
(automatic water
return procedure)
(see par. 4.4.10)
Manual
active
Stop
production
Alarm:Ed
Drainalarm
(Cylinder1(2)Off)
Drain alarm drain malfunction check the water drain circuits and the
correct operation of the electric drain pump,
and check the condition of the lter inside
the cylinder
Manual
active
Stop
production
Alarm:EL
Lowcurrent
(Cylinder1(2)Off)
Low current
alarm
power not available;
when the unit is
activated no steam is
produced
with the unit o and disconnected from
the mains, check the electrical connections
inside
Manual
active
Stop
production
Alarm:EH
Highcurrent(
Cylinder1(2)Off)
High current
alarm
excess current in
the electrodes;
probable fault with
the electrodes or
water temporarily
too conductive
(especially when
restarting after a
short stop)
1. check the operation of the electric drain
pump;
2. check the seal of the supply solenoid
valve when not energized;
3. drain some of the water and restart.
4. check for bridges between the electrodes.
5. cylinder replacement and/or maintenance
Manual
active
Stop
production
Alarm:EC
Highconductivity
(CylindersOff)
High
conductivity
alarm
high conductivity of
the supply water
1. check the limit threshold set;
2. switch the unit o and clean the
electrodes that measure the conductivity
of the water; if the problem persists,
change the origin of the supply water or
use a suitable treatment system (partial
demineralization).
N.B.: the problem is not resolved by
softening the supply water..
Manual
active
Stop
production
Warning:Ec
Highconductivity
High supply
water
conductivity pre-
alarm
high water
conductivity alarm
warning
1. check the conductivity of the supply
water, if necessary use a suitable
treatment system.
N.B.: the problem is not resolved by
softening the supply water
Automatic
not
active
signal only
Warning:E>
Highhumidity
Main probe pre-
alarm
high humidity in the
room (high temp.
if the temperature
probe is used)
check the operation of the probe and the
upper limit set by parameter
Automatic
not
active
signal only.
Warning:E_
Lowhumidity
Main probe low
humidity pre-
alarm
low humidity in the
room (low temp.
if the temperature
probe used)
check the operation of the probe and the
lower limit set by parameter
Automatic
not
active
signal only
10. TABLE OF ALARMS