Westric IW Series, Installation, Operation And Maintenance Manual

Page: 71 / 82

76-5276-05 Page 71 of 82
2 slow flashes serial disconnected Cable broken /
disconnected / not
properly connected
after the previous
set. check the connection
of electricity and their
supervisor AUTO si humidif.
stopped
if
enabling
(see “I”
62)
3 slow flashes No supply water:
the humidifier tries
to add water but
the level inside
the cylinder does
not increase at the
expected speed
(the level of water
is estimated by
the TAM electrical
circuit). Low supply water
pressure. The water supply pressure
must be between 0.1 and
0.8 MPa (1-8 bars). automatic
(after 10
minute
delay) yes
(in 10
minute
delay ) humidif.
stopped
only
for 10
minutes
Steam hose bent,
choked or blocked
by condensate: this
may cause high
backpressure that
prevents the water
from being filled
into the cylinder Check and reposition/
replace
Excessive
backpressure in the
hoses To check this, switch the
unit off, remove the steam
hose from the cylinder
and switch the unit on:
fill water into the cylinder,
then reconnect the steam
hose.
Internal fill hoses
bent, choked or
blocked Check and reposition /
clean/replace
The drain valve
leaks Check and clean
Fill valve blocked or
malfunctioning. Check the correct
operation of the fill valve:
1. Switch the unit off and
on again: can the noise
of the valve opening be
heard? YES: go to “2”; NO:
go to “3”.
2. Clean/replace. If the
internal flow limiter,
installed at the valve
outlet, is detached from
the valve, the water may
flow directly to the drain
through the fill tank as
the flow-rate is too high.
If this is the case, replace
the valve.
3. Replace the board.
Red LED on
board (if terminal
not connected)
(*) description cause solution reset
(press) alarm relay
activation action
4 slow flashes Low steam flow-rate
during reduced
production. The
steam flow-rate is
estimated by the
TAM circuit Conductivity of
the mains water
too low. The water conductivity
must be between 75
and1250 μS/cm. ESC yes humidif.
stopped
Too much foam in
the cylinder. Perform the pre-wash (see
“Advanced functions”)
Excess scale in the
cylinder. Clean/replace the cylinder.
TAM electrical
circuit not config.
correctly.
See solution to EF (relating to
TAM electrical circuit
not configured)
Malfunction in
the TAM electrical
circuit.
5 slow flashes Drain problem Check the drain pump and
fill connection ESC yes humidif.
stopped
Check that the drain valve
is working correctly:
1. Switch unit off;
2. short-circuit M2.5 with
M2.6;
3. switch unit on;
4. can noise of the drain
valve opening be heard?
YES: remove drain valve
and clean; NO: replace
the valve.
Manifold blocked Remove cylinder and valve
and clean manifold.
Cylinder filter
blocked Replace the cylinder.
6 slow flashes The cylinder requires
maintenance due to
the accumulation
of lime scale. The
“Cylinder almost
depleted” and
“Cylinder depleted”
warnings can be
disabled by b1-
parameter The lime scale
limits steam
production. Routine maintenance:
check the correct
operation of the cylinder,
clean it and, if necessary,
replace it. ESC no signal
only