ļ 2002 by ELTRA GmbH Germany ā January 2002 ā Service Manual OH 900 / ON 900 / ONH 2000
3.20-1
3.20 3.20Replacing V7 and V8 by stainless solenoid valves:
Caution:
The old
V7/V8
are operated with
220V AC
while the new stainless
V7/V8
have to be
energized with
24V DC
. This requires modifications as discribed below.
+
Cut and remove the two short, red and blue wires connecting the old
V7
and
V8
with
each other.
+
Disconnect from the valves (from
V8
) the two long red wires and connect them with each
other. They connect now only
V5
+
V6
with the ON/OH switch (lead 3)
+
Disconnect and completely remove the blue cable connecting the old valves with the
power distributor.
+
Remove the old
V7/V8
and replace them by new stainless
V7/V8
according the schematic
25024
. Take care of the lables
IN
and
OUT
on the valves to comply with the drawing
25024
. Connect them according the drawings
25545
and
25533
.
According to these drawings the two new valves
V7/V8
have to be connected with a red
cable to
+24V
(at the pressure switch lead). The other leads of the
V7/V8
coils are
connected to the lead
C3
of the
ON/OH
switch with a blue cable. One diode
1N4007
has
to be installed in between
C3
of the
ON/OH
switch and the green/white cable that was
originally directly connected to
C3
.
+
Connect all plastic tubes the same way as they were connected on the old valves. See
also the drawings
11-7
till
11-12
, chapter
4.2
.
Verschraubung
151M-6/4-M5 geklebt
Verschraubung
151M-6/4-M5 geklebt
3/2-W.-Magnetventil 24V
Typ ET-3-24-M5
2xAbstandbolz M3x5
18 H 170 geklebt
Verschraubung
151M-6/4-M5 geklebt
IN
OUT
D-41469 Neuss
Mainstr. 85 Block 20
Benennung:
Zeichnungs-Nr.:
Datum
gez.:
gepr.:
Sanda
Polemitis
Name
23.02.2006
23.02.2006
25195
geƤndert am:Bez.:
V7; V8 - ONH2000
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