Asco 8210 Series Installation & Maintenance Instructions

Installation & Maintenance Instructions
2-WAY INTERNAL PILOTED-OPERATED SOLENOID VALVES
NORMALLY OPEN OPERATION
NOTICE: See separate solenoid installation and maintenance
instructions for information on: Wiring, Solenoid Temperature,
Cause of Improper Operation, or Coil Replacement.

DESCRIPTION

Series 8210 valves are 2-way normally open internal
pilot-operated solenoid valves designed for general service.
Valves are made of rugged forged brass. 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 Open: Valve is open when solenoid is de-energized;
closed 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 (close the valve) insert
screwdriver and turn stem clockwise until it stops.
Valve will now be in the same position as when the solenoid is
energized. To disengage manual operator (open the valve), turn stem
counterclockwise until it stops.
CAUTION: For valve to operate electrically, manual
operator stem must be fully rotated counterclockwise.

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.
Watt
Catalog
Rating
Number
Prefix
AC/DC
None, KF,
SF or SC
15.4 or 16.1 15.4 or 16.1
HT, KH, ST
AC
or SU
16.8
None or HT
DC
e
ASCO Valves
1I, 1 ¼I OR 1 ½I NPT
Maximum Maximum
Solenoid
Ambient Fluid
Class
Temp. Temp.
125_F 180_F
F
(51.7_C) (82_C)
140_F 180_F
H
(60_C) (82_C)
77_F 180_F
F or H
(25_C) (82_C)
MCMXCVIII All Rights Reserved.
GENERAL SERVICE
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 accumulating in the solenoid base sub-assembly area.

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 personal
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.
50-60 Hanover Road, Florham Park, New Jersey 07932
SERIES
8210
8211
Form No.V5460R4

MAINTENANCE

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