CLA-VAL 100-02 Installation And Operation Maintenance Download Page 19

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DESCRIPTION

Bulletin 8262’s are 2-way normally closed, direct acting solenoid valves
having bodies of brass construction. Standard valves have a General
Purpose NEMA Type 1 Solenoid Enclosure. Valves may also be equipped
with a solenoid enclosure which is designed to meet NEMA Type 4
Watertight, NEMA Type 7 (C or D) Hazardous Locations-Class 1, Groups C
or D and NEMA Type 9 (E, For G) Hazardous Locations Class 2, Groups E, F
or G. Installation and Maintenance Instructions for Explosion-Proof/Watertight
Solenoid Enclosures are shown on Form Nos. V-5391 or V-5380.

OPERATION

Normally Closed: Valve is closed when solenoid is de-energized. Valve
opens when solenoid is energized.

NOTE:

Inlet port will either be marked “1” or “1N.” Outlet port will be marked “2.”

IMPORTANT: No minimum operating pressure required.

INSTALLATION

Check nameplate for correct catalog number, pressure, voltage and service.

TEMPERATURE LIMITATIONS

For maximum valve ambient and fluid temperature, refer to chart below. For
higher ambient and fluid temperatures, consult factory. Check catalog number
and watt rating on nameplate to determine the maximum temperatures.

POSITIONING

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 core tube area.

MOUNTING

For valve body and mounting bracket mounting dimensions, refer to
Figures 1 and 2.

PIPING

Connect piping according to markings on valve body. Apply pipe
compound sparingly to male pipe threads only; if applied to valve threads,
it may enter valve and cause operational difficulty. Pipe strain should be
avoided by proper support and alignment of piping. When tightening the
pipe, do not use valve as a lever. Wrenches applied to valve body or
piping are to be located as close as possible to connection point.

IMPORTANT:

For the protection of the solenoid valve. install a strainer or

filter suitable for the service involved in the inlet side as close to the valve
as possible. Periodic cleaning is required depending upon service
conditions. See Bulletins 8600, 8601 and 8602 for strainers.

WIRING

Wiring must comply with Local and National Electrical Codes. Solenoid
housings are provided with a 7/8 diameter hole for 1/2 inch conduit. The
general purpose solenoid enclosure may be rotated to facilitate wiring by
removing the retaining cap or clip.

CAUTION:

When metal retaining clip

disengages, it will spring upward. Rotate enclosure to desired position.
Replace retaining cap or clip before operating.

NOTE:

Alternating Current (A-C) and Direct Current (D-C) solenoids are

built differently. To convert from one to the other, it is necessary to change
the complete solenoid including the core assembly and solenoid base
sub-assembly.

SOLENOID TEMPERATURE

Standard catalog valves are supplied with coils designed for continuous
duty service. When the solenoid is energized for a long period, the
solenoid enclosure becomes hot and can be touched with the hand only
for an instant. This is a safe operating temperature. Any excessive heating
will be indicated by the smoke and odor of burning coil insulation.

MAINTENANCE

WARNING:

Turn off electrical power supply and depressurize valve

before making repairs. It is not necessary to remove the valve from the
pipe line for repairs.

CLEANING

A periodic cleaning of all solenoid valves is desirable. The time between
cleanings will vary depending upon media 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. Clean
valve strainer or filter when cleaning solenoid valve.

PREVENTIVE MAINTENANCE

1. Keep the medium flowing through the valve as free from dirt and
foreign material as possible.
2. While in service, operate the valve at least once a month to insure
proper opening and closing.
3. Periodic inspection (depending on media and service conditions) of
internal valve parts for damage or excessive wear is recommended
Thoroughly clean all parts. Replace any parts that are worn or damaged.

IMPROPER OPERATION

Faulty Control Circuit:

Check the electrical system by energizing the

solenoid. A metallic click signifies the solenoid is operating. Absence of
the click indicates loss of power supply. Check for loose or blownout
fuses, open-circuited or grounded coil, broken lead wires or splice
connections.
2.

Burned-Out Coil:

Check for open-circuited coil. Replace coil if necessary.

Low Voltage:

Check voltage across the coil leads. Voltage must be at

least 85% of nameplate rating.
4.

Incorrect Pressure:

Check valve pressure. Pressure to valve must be

within range specified on nameplate.
5.

Excessive Leakage:

Disassemble valve and clean all parts. Replace

worn or damaged parts with a complete Spare Parts Kit for best results.

COIL REPLACEMENT

Turn off electrical power supply and disconnect coil lead wires. Refer to
watt rating stamped on nameplate for identification of solenoid
construction. When you have determined the watt rating of solenoid,
select the correct paragraph below.

FIGURE 3 SHOWS A SOLENOID WITH A WATT RATING OF 6 A-C, 9.7 D.C,OR 9 A-C.

1. Remove retaining cap or clip, nameplate and cover.

CAUTION:

When

metal retaining clip disengages, it will spring upward.
2. Slip the yoke containing a coil, sleeves and insulating washers off the
solenoid base sub-assembly. Insulating washers are omitted when a
molded coil is used.
3. Slip coil, sleeves and insulating washers from yoke. 4. Reassemble in
reverse order of disassembly paying careful attention to exploded view
provided for identification and placement of parts.

Wattage

Coil

Class

Catalog

Number

Prefix

Max.

Ambient
Temp.

°F

Max.
Fluid

Temp.

°F