Asco 8210 series Installation And Maintenance Instructions

Installation & Maintenance Instructions
2-WAY INTERNAL PILOTED-OPERATED SOLENOID VALVES
BRASS AND STAINLESS STEEL CONSTRUCTION
NORMALLY CLOSED OPERATION
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. Valves
are made of rugged forged brass or stainless steel. Series 8210 valves
are provided with a general purpose solenoid enclosure.
Series EF8210 and 8211 are the same as Series 8210 except they are
provided with an explosionproof or explosionproof/watertight
solenoid enclosure.
OPERATION
Normally Closed: Valve is closed when solenoid is de-energized;
open when energized.
NOTE: No minimum operating pressure differential required.
Manual Operator (optional feature)
Manual operator allows manual operation when desired or during an
electrical power outage. To engage manual operator (open the valve),
remove operator cap and gasket base of valve. Turn manual operator
stem clockwise as far as possible. Do not force operator stem. Valve
will then be in the same position as when the solenoid is energized.
To disengage manual operator, turn stem counterclockwise as far as
possible.
CAUTION: Stem must be fully retracted counterclockwise
before operating valve electrically.
Replace manual operator cap gasket and cap.
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 personnel.
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 prefix and watt rating on nameplate.
Catalog
Watt
Coil
Number
Rating
Class
Prefix
AC/DC
None, KF,
F
SF or SC
15.1 & 16.1
AC
HT, KH,
H
ST or SU
30.6
HT H
DC
e
50 Hanover Road, Florham Park, New Jersey 07932
Maximum Maximum
Ambient Fluid
Temp. Temp.
125_F (51.7_C) 180_F (82_C)
140_F (60_C) 180_F (82_C)
104_F (40_C) 77_F (25_C)
MM All Rights Reserved.
1I, 1 1/4I, & 1 1/2I NPT
Positioning
AC Construction (Alternating Current): Valve is designed to
perform properly when mounted in any position. However, for
optimum life and performance, the solenoid should be mounted
vertical and upright so as to reduce the possibility of foreign matter
accumulating in the solenoid base sub-assembly area.
DC Construction (Direct Current): Valve must be mounted with
solenoid vertical and upright.
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.
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.
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 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
S Keep the medium flowing through the valve as free from dirt and
foreign material as possible.
S While in service, the valve should be operated at least once a
month to insure proper opening and closing.
S 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
S Incorrect Pressure: Check valve pressure. Pressure to valve must
be within range specified on nameplate.
S Excessive Leakage: Disassemble valve and clean all parts. If parts
are worn or damaged, install a complete ASCO Rebuild Kit.
Printed in U.S.A.
www.ascovalve.com
SERIES
8210
8211
Form No.V5455R5
MAINTENANCE
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