50 Hanover Road, Florham Park, New Jersey 07932 www.ascovalve.com
Page 2 of 4 Form No V5848R2
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, 8601 and 8602
for strainers.
MAINTENANCE
WARNING: To prevent the possibility of death,
serious injury or property damage, turn off electrical
power, depressurize valve, and vent fluid to a safe area
before servicing the valve.
NOTE: It is not necessary to remove the valve from the pipeline for
repairs.
Cleaning
All solenoid valves should be cleaned periodically. The time between
cleanings will vary depending on the medium and service conditions.
In general, if the voltage to the coil is correct, sluggish valv
e 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 possible.
While in service, the valve should be operated at least once a
month to insure proper opening and clos
ing.
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 ASCO
Rebuild Kit.
Causes of Improper Operation
Incorrect Pressure: Check valve pressure. Pressure to valve must
be within range specified on nameplate.
Excessive Leakage: Disassemble valve and clean all parts. If parts
are worn or damaged, install a complete ASCO Rebuild K
it.
Valve Disassembly
1.Disassemble valve in an orderly fashion using exploded views
for identification and placement of parts. Refer to Figure 2 for
AC construction; Figure 3 for DC construction.
2. Remove solenoid enclosure. See separa
te instructions.
S For AC construction (standard or with manual operator), proceed as
follows:
3.For standard construction, remove bonnet screws, solenoid
base sub-assembly, core spring, core assembly, diaphragm
spring, diaphragm assembly and body gasket from valve body.
4.For manual operator constructi
ons, unscrew solenoid base
sub-assembly first then follow step 3 for removal of parts.
5.For normal maintenance (cleaning) it is not necessary to
disassemble the manual operator unless an ASCO Rebuild Kit
is being inst
alled. To disassemble, remove stem pin, manual
operator stem, stem spring and stem gaskets (2).
S For DC construction (standard or with manual operator), proceed as
follows:
6. Unscrew solenoid base sub-assembly first then follow step 3
and 5 for removal of parts.
Note
: Diaphragm spring is omitted for DC construction.
7.All Parts are now accessible for cleaning or replacement
. If
parts are worn or damaged, install a complete ASCO Rebuild
Kit.
Valve Reassembly
1. Lubricate body gasket and solenoid base gasket with DOW
CORNING 200 Fluid lubricant or an equivalent high-grade
silicone fluid.
2. Lubricate manual operator stem gaskets (2) with
DOW
CORNING 111 Compound lubricant or an equivalent
high-grade silicone grease.
3.Replace body gasket and diaphragm assembly. Locate bleed
hole in diaphragm assembly approximately 45 from valve
outlet.
S For AC construction (standard or with manual operator), proceed as
follows:
4.Position diaphragm
spring on diaphragm assembly. Be sure
large end of diaphragm spring seats in cup of diaphragm
assembly. For manual operator constructions, small end of
diaphragm spring seats in cup of diaphragm assembly.
5. Install wide end
of core spring in core assembly first, closed end
protrudes from top of core assembly.
6.For standard construction, position core assembly with core
spring and solenoid base sub-assembly (integral with bonnet)
over d
iaphragm spring and diaphragm assembly.
7. Install bonnet screws and hand thread screws as far as possible,
then torque bonnet screws in a crisscross manner to 95 ± 10
in-lbs [10,7 ± 1,1 Nm].
8.For valve constructions with a manua
l operator, first install
valve bonnet and bonnet screws as described in step 7.
9. Install solenoid base gasket, core assembly with core spring and
solenoid base sub-assembly.
10. Torque solenoid base sub-assembly to 175
± 25 in-lbs
[19,8 ± 2,8 Nm].
11.For valves with a manual operator proceed as follows:
A. Install two manual operator stem gaskets on stem.
Refer to Step 2 for lubrication instructions.
B. Insta
ll stem spring and stem assembly with gaskets into
valve bonnet.
C. Push stem assembly into valve bonnet; align stem pin
hole and install stem pin.
D. Operate manual operator to be sure there is
no
misalignment or binding. Then rotate manual operator
stem counterclockwise as far as possible.
S For DC construction (standard or with manual operator), proceed as
follows:
12.For standard or manual operator constructions, replace valve
bonnet and follow steps 7, 9 and 10. For manua
l operator
constructions, install core spring in core assembly following
step 5.
13. Install solenoid. See separate instructions.
WARNING: To prevent the possibility of death,
serious injury or property damage, check valve for
proper operation before returning to service. Also
perform internal seat and external leakage tests with
a nonhazardous, noncombustible fluid.
14.Restore line pressure and electrical power supply to valve.
15.After maintenance is completed, operate the valve a few times
to be sure of proper operation. A metallic click signifies the
solenoid is
operating.
ORDERING INFORMATION
FOR ASCO REBUILD KITS
Parts marked with an asterisk (*) in the exploded view are supplied in
Rebuild Kits. When Ordering Rebuild Kits for ASCO valves, order
the Rebuild Kit number stamped on
the valve nameplate. If the
number of the kit is not visible, order by indicating the number of kits
required, and the Catalog Number and Serial Number of the valve(s)
for which they are intended.
Page 1 of 4
50 Hanover Road, Florham Park, New Jersey 07932 www.ascovalve.com
MM All Rights Reserved.
Printed in U.S.A.
Installation & Maintenance Instructions
SERIES
Form No.V5848R2
2-WAY INTERNAL PILOTED-OPERATED SOLENOID VALVES
8210
NORMALLY CLOSED OPERATION Ċ GENERAL SERVICE
3/8, 1/2 OR 3/4 NPT
8211
NOTICE: See separate solenoid installation and maintenance
instructions for information on: Wiring, Solenoid Temperature,
Cause of Improper Operation, Coil or Solenoid Replacement.
DESCRIPTION
Series 8210 valves are 2-way normally closed internal
pilot-operated solenoid valves designed for general service. Va lves
are made of rugged forged brass. Series 8210 valves are provided
with a general purpose solenoid enclosure.
Seri
es EF8210 and 8211 are the same as Series 8210 except they are
provided with an explosionproof or explosionproof/watertight
solenoid enclosure.
OPERATION
Normally Closed: Va lve is closed when solenoid is de-energized;
open when energized.
IMPORTANT: Minimum operating pressure differential required
is 5 psi.
Manual Operator (optional feature)
Manual operator allows manual operation when desired or during an
electrical power outage. To engage manual operator (open the valve),
push in knurled cap and rotate stem clockwise 180. Va lve will now
be
in the same position as when the solenoid is energized. To
disengage manual operator (close the valve), turn stem
counterclockwise 180.
Push in and rotate
180°clockwise to operate
CAUTION: For valve to operate electrically, manual
operator stem must be fully rotated counterclockwise.
Relocation of Manual Operator
Manual operator may be relocated at 90 increments by rotating the
valve bonnet as follows:
WARNING: To prevent the possibility of death,
serious injury or property damage, turn off electrical
power, depressurize valve, and vent fluid to a safe area
before relocating manual operator.
1. See separate solenoid installation and maintenance instruction's
and follow instructions to loosen solenoid to allow rotation of
enclosure.
2. Be sure manual operator stem is fully rotated
counterclockwise.
3. Remove bonnet screws from valve body.
4. Lift valve bonnet slightly and rotate to desired position. Do not
rotate the diaphragm assembly with the valve bonnet.
5.Replace bonnet screws and torque i
n a crisscross manner to
95 ± 10 in-lbs [10,7 ± 1,1 Nm].
6.Position and tighten solenoid in place, see separate instructions.
WARNING: To prevent the possibility of death,
serious injury or property damage, check valve for
proper operation before returning to service.
7.Test operate valve electrically and manually. Be sure valve can be
test operated without effecting other equipment.
8.Restore line pressure and electrical power supply to valve.
INSTALLATION
Check nameplate for correct catalog number, pressure, voltage,
frequency, and service. Never apply incompatible fluids or exceed
pressure rating of the valve. Installation and valve maintenance to be
performed by qualified personne
l.
Future Service Considerations
Provision should be made for performing seat leakage, external
leakage, and operational tests on the valve with a nonhazardous,
noncombustible fluid after disassembly and reassembly.
Temperature Limitations
For maximum valve ambient and fluid temperatures, refer to chart
below. Check catalog number and watt rating on nameplate.
Watt
Rating
AC
or
DC
Catalog
Number
Prefix
Solenoid
Class
Max.
Amb.
Temp. F
Max.
Fluid
Temp. F
6
None or DF F 122 180
AC
HT H 140 180
6.1
None, KF,
SF, or SC
F 125 180
AC
HT, KH, ST
or SU
H 140 180
11.2
DC
None or HT F or H 77 150
11.6
DC
None, HT,
KF, KH, SC,
SF or ST
F or H 104 150
Positioning
This valve is designed to perform properly when mounted in any
position. However, for optimum life and performance, the solenoid
should be mounted vertically and upright to reduce the possibility of
foreign matter accumu
lating in the solenoid base sub-assembly area.
Mounting
For mounting bracket (optional feature) dimensions, refer to Figure 1.
Figure 1. Mounting bracket dimensions
[42]
1.66
.28 dia.
2 mounting holes
[ 7.1]
Ø
Piping
Connect piping to valve according to markings on valve body. Apply
pipe compound sparingly to male pipe threads only. If applied to
valve threads, the compound may enter the valve and cause
operational difficulty
. Avoid pipe strain by properly supporting and
aligning piping. When tightening the pipe, do not use valve or
solenoid as a lever. Locate wrenches applied to valve body or piping
as close as possible to connection point.
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