Aventics SuperSpool RCV, Информация о сервисе

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Page 4
The SuperSpool ™ RCV valve is a high flow,
four ported, four - way directional control valve featuring
double 24 Vdc solenoid operators. This valve also uti-
lizes a reverse polarity diode assembly and requires
connection of only two leads to control the valve. A
positive (+) polarity 24 Vdc signal at the yellow reusable
butt splice connector and a negative ( - ) signal on the
ground wire actuates the ” OPEN ” end solenoid. Re-
versing the polarity on these two leads actuates the
” CLOSE ” end solenoid.
Adjustments
No adjustments are required on the SuperSpool
RCV Valve.
Maintenance
It is recommended that this valve be disassem-
bled every five years for cleaning, inspection, and lubri-
cation. To remove this valve from the installation, all air
pressure must be shut off and vented.
If complete valve removal is desired, disconnect
the electrical wiring where the valve is hard wired to the
car and remove the five screws that attach the valve to
the subbase. Caution: If this is done, the electrical
operation will need to be verified on the car after the
valve assembly is re - attached.
Valve service should be performed in a clean
work area. Blow all dust from the valve ports using
compressed air and disassemble the valve. Use care to
avoid scratching the large diameter of the spool during
or after removing it from the valve. The spool must be
re - installed exactly as removed.
If the valve body and spool are extremely dirty,
it may be advisable to wash them with either a mild (non
- abrasive) soap and water solution or with a non -
flammable solvent. In order to do this the solenoid op-
erators will need to be removed from the valve assem-
bly. Remove the conduit body cover from the top of the
valve and carefully disconnect the diode holders from
the wires leading to the solenoids. The solenoid opera-
tors may now be removed from the valve by carefully
feeding the wires back through the wire way and out the
end of the valve. Inspect the spool for any nicks or
scratches on the outer sealing diameter. If scratches
are found, the spool should be replaced. All rubber
parts should be washed with soap and water. Rinse
thoroughly and blow dry.
Use a spanner wrench to remove the solenoid
armature and plunger assemblies and clean the sole-
noid end covers in similar fashion to remove dust and
debris. Rinse and dry these parts thoroughly before
reassembly.
Replace any parts that are damaged or worn,
giving particular attention to the spool and seal rings.
Repair kit part numbers are identified on page 6. Lubri-
cate all rubber parts, the bore of the valve body, and the
spool itself with the Shell Alvania EP - RO grease as pro-
vided in the seal repair kit.
If a solenoid operator body that uses a flat gas-
ket between the operator body and the valve body must
be replaced, the hollow locating pin installed in the end
of the valve body will need to be removed prior to instal-
lation of the new operator body. This must be done with
care so as not to damage the surface on the end of the
valve body.
When reassembling the valve using the rubber
overhaul kit, the one new seal cage included in the kit
should be installed in the center of the valve body and
one of the old cages should be discarded. To do this,
three old cages and three new seals should be inserted
into the bore of the valve body before inserting the new
cage provided in the repair kit. Then the remaining
three new seals and three of the old cages should be
inserted into the bore. This is illustrated in figure 2.
Attach the solenoid operator with the detent piston first,
insuring that the wires are inserted into the integral wire
way and fed through the opening in the top of the valve
body. Insert the spool from the open end of the valve,
inserting the red end first. Press the spool down until it
engages the detent piston.
Attach the other solenoid operator insuring that
the wires are inserted through the integral wire way and
fed through the opening in the top of the valves body
and tighten it against the body. Torque all of the attach-
ment screws (8) to 6 – 8 ft - lbs. As the attachment
screws are tightened they will “ crush ” the new seal cage
in the assembly and create the proper loading on the
new seals.
Mount the valve on a subbase and test for prop-
er function. Apply air pressure (150 psi max) and 24
Vdc power supply to the lead wires and note the valve
shifts as desired. Positive to the yellow reusable butt
splice and negative to the ground wire should energize
the “ OPEN ” end of the valve, reversing the polarity
should energize the “ CLOSE ” end of the valve. Also
depress the manual override buttons on each end of the
valve to confirm their function.