Tuttnauer 1730EK, Техническое руководство

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61
Correcti
ons
14.1
Replace f
aulty valve.
14.2
Replace boar
d DIG-T2.
14.3
Fix the conne
ctions.
14.4
Repair or replace the valve.
15.1
Replace boar
d DIG-T2.
15.2
Fix the conne
ctions.
15.3
Replace the s
olenoid. If this does not help,
repair or replace the valve.
15.4 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 w
ith th
e mech
an
ic
al
p
art o
f
th
e v
alv
e, th
e s
olen
oi
d,
the dr
iv
er
o
n ANL-T
2
board or the control ci
rcuit on D
IG-T2 board.
14.1
Dry valve is stuck.
14.2
Check TP10.
If the voltage
is higher than
4VDE and there is a contr
ol signal to the
valve the pro
blem is on DIG-T2 board.
If the voltage is 0VDC a
nd th
e v
alv
e is
open, the
pr
obl
em
is
not
the
c
ontro
l c
ircu
it bu
t o
ne
o
f th
e
ot
her
elem
ents of
th
e system
.
14.3
Check the connection bet
w
een connector
JP5/6 and the
valve.
14.4
Check the solenoid coil i
nput voltage while
the solenoid is connected to the valve, by removing the
cover that protects the ter
m
inals
of the coils. I
f the valve is open, despite
the
voltage being less than 2VDC, there is a mechanic
al problem.
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.
15.1
Check
TP10.
If
the
voltage
is
constantly
0VDC, at the stage when the valve must be open, then
th
e problem must be on DIG-T2
board.
15.2
Check the connection bet
w
een connector
JP5/6 and the
valve.
15.3
Check the solenoid coil i
nput voltage while
the solenoid is connected to the valve. If the valve is closed, despite the
voltage being
higher than
10VDC, there
is a me
chanic
al
problem with the valve.
15.4
If all items ch
ecked above conform to
requirements, ANL-T2 board is faulty.
Symp
to
m
14.
Dry valve is
al
ways open
(models EA, EKA).
15.
Dry valve is
al
ways cl
osed
(models EA, EKA).