Tuttnauer 1730EK, Техническое руководство

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60
Correcti
ons
12.1
Replace boar
d DIG-T2.
12.2
Fix the conne
ctions.
12.3
Replace the s
olenoid. If this does not
solve the problem, repair or replace the valve
12.4 Replace
ANL
-T2
board.
13.1
replace faulty
valve.
13.2
Replace boar
d DIG-T2.
13.3
Fix the conne
ctions.
13.4
Repair or replace the valve.
13.5 Replace
ANL
-T2
board.
Pos
sib
le ca
use ch
eck
-u
p and tes
ts
The pr
ob
le
m ma
y b
e th
e me
ch
an
ic
al
p
ar
t o
f th
e
va
lv
e, th
e s
oleno
id
, th
e
driver on A
N
L-T2 board
or the co
ntrol circu
it on DIG
-T2 board.
12.1
Check TP7. I
f voltage is constantly 0V
at the
stage when the valve must be open then
DIG-
T2 board is fa
ulty.
12.2
Check the connection bet
w
een connector
JP5/3 and the
valve.
12.3
Check the vol
tage coming to the solenoi
d coil
while the solenoid is connected to the va
lve.
If the valve is closed despite the voltage
being
higher than
10
VDC, the solenoid is fault
y, or
there is a me
ch
anical problem with the valve.
12.4
If all items ch
ecked above conform to
requirements, ANL-T2 board is faulty.
The
probl
em
c
oul
d be
the
mech
an
ical p
art of th
e
va
lv
e, th
e dr
iv
er
loc
ated on ANL
-T2 board or
th
e con
tro
l c
ircu
it
on D
IG-T2 board.
13.1
Air valve is stuck.
13.2
Check TP7. I
f the voltage i
s higher than
4VDC and there is a contr
ol signal to the
valve, the pro
blem is on DIG-T2 board.
If the voltage is 0VDC
and the valve is open,
th
e pr
obl
em is
not the control cir
cuit
but
one
of
th
e ot
her
elem
ents of the system
.
13.3
Check the connection bet
w
een connector
JP5/3 and the
valve.
13.4
Check the vol
tage at the solenoid coil, w
hile
the solenoid is connected to the valve, by removing the
cover which protects the
terminals of t
he coil. If the
valve is open
despite the voltage being lower than 2VDC, there is a me
ch
anical problem with the valve.
13.5
If all items ch
ecked above conform to
requirements, ANL-T2 board is faulty.
Symp
to
m
12.
Ai
r va
lve is
a
lwa
ys
c
lose
d.
13.
Ai
r va
lve is
a
lwa
ys
open.