
Page 2 of 8 (Section 1 of 2)
ASCO Valve, Inc.50 Hanover Road, lorham Park, New Jersey 07932 www.ascovalve.com
I&M No.V9564R4
WARNING: To prevent the possibility of death,
serious injury or property damage, only use the
optional ASCO connecting hardware kit for the direct
connection of these valves to one another. Complete
instructions and guidelines for piping the valves
together are included with the kit.
CAUTION: To avoid damage to the valve body, DO
NOT OVERTIGHTEN PIPE CONNECTIONS. If PTFE
tape, paste, spray, or similar lubricant is used, use extra
care when tightening due to reduced friction.
CAUTION: To protect the solenoid valve, install a
strainer or filter, suitable for the service involved, in the
inlet side as close to the valve as possible. Clean
periodically depending on service conditions. See
ASCO Series 8600 and 8601 for strainers.
Testing for External Leakage
WARNING: To prevent the possibility of death,
serious injury or property damage, turn off
electrical power, depressurize valve, extinguish
all open flames and avoid any type of sparking or
ignition. Vent hazardous or combustible fluid to
a safe area before servicing the valve.
1. Block gas flow on downstream side of valve.
2. Apply pressure to valve within nameplate rating and
energize solenoid.
3. Apply a soapy solution or a commercially availa le leak
detecting solution to the pipe connections and check for
u les. If the valve has een tested for seat leakage or
disassem led and reassem led for inspecting, cleaning,
or re uilding apply the solution around solenoid ase
su ---assem ly, onnet/ ody joint and pipe plugs.
4. If leakage exists, depressurize valve and turn off
electrical power supply. Tighten connections as required
and retest following the a ove steps.
Wiring (Electrical Position Indicator)
Wiring must comply with local codes and the National
Electrical Code. Switch housing has a 1/2conduit
connection. The position indicator switch has een preset at
the factory. This switch is not to e field adjusted. Position
indicator housing assem ly can e rotated 360for
desira le visual position. Position indicator is furnished
standard with one reed switch having a single contact to
open when the valve is in the open position. The switch
rating is 1 amp maximum, 120/60 AC maximum and 15
volts---amps maximum (Resistive Load) or 1 amp
maximum, 120 volts DC maximum and 15 watts maximum
(Resistive Load). For lamp and inductive loads, contact
protection is required.
MAINTENANCE
WARNING: To prevent the possibility of
death, severe injury or property damage, turn off
electrical power, depressurize valve, extinguish
all open flames and avoid any type of sparking or
ignition. Vent hazardous or combustible fluid to
a safe area before servicing the valve.
Cleaning
All solenoid valves should e cleaned periodically. Thetime
etween cleanings will vary depending on the medium and
service conditions. In general, if the voltage to the coil is
correct, sluggish valve operation, excessive noise or leakage
will indicate that cleaning is required. In the extreme case,
faulty valve operation will occur and the valve may fail to
open or close. Clean strainer or filter when cleaning the
valve.
Preventive Maintenance
Keep the medium flowing through the valve as free from
dirt and foreign material as possi le.
Periodic exercise of the valve should e considered if
am ient or fluid conditions are such that corrosion,
elastomer degradation, fluid contamination uild up, or
other conditions that could impede solenoid valve
shifting are possi le. The actual frequency of exercise
necessary will depend on specific operating conditions. A
successful operating history is the est indication of a
proper interval etween exercise cycles.
Depending on the medium and service conditions,
periodic inspection of internal valve parts for damage or
excessive wear is recommended. Thoroughly clean all
parts. If parts are worn or damaged, install a complete
re uild kit. Re uild kits are not availa le for valves with
Electrical Position Indicator Switch (Suffix ’C’). If parts
are worn or damaged on (Suffix ’C’) valves, replace valve.
Causes of Improper Operation
Incorrect Pressure: Check valve pressure. Pressure to
valve must e within range specified on nameplate.
Excessive Leakage: Disassem le valve and clean all parts.
If parts are worn or damaged,install a complete re uild kit.
Re uild Kits are not availa le for valves with Electrical
Position Indicator Switch (Suffix ’C’). If parts are worn or
damaged on (Suffix ’C’) valves, replace valve.
Valve Disassembly
NOTE: Determine valve construction AC (Figure 2 on page
4) or DC (Figure 5 on page 7) then proceed as follows:
1. Remove solenoid enclosure, see separate instructions. If
position indicator construction is present, refer to
appropriate instructions regarding disassem ly,
reassem ly or adjustment.
2. For AC Construction, unscrew solenoid ase
su ---assem ly. For DC Construction, unscrew solenoid
ase su ---assem ly with special wrench adapter
provided in ASCO Re uild Kit. For wrench adapter only,
order kit No. 218949. NOTE: For alternate type open
end wrench, order kit No. 168146---001 which is availa le
for solenoid ase su ---assem ly removal or
replacement.
3. Remove onnet screws, valve onnet, onnet gasket,
core/diaphragm su ---assem ly, and ody gasket.
4. All parts are now accessi le to clean or replace. If parts
are worn or damaged, install a complete re uild kit.
Re uild Kits are not availa le for valves with Electrical
Position Indicator Switch (Suffix ’C’). If parts are worn
or damaged on (Suffix ’C’) valves, replace valve.