Grain Systems PNEG-526 - Manual (Page 185)

50 Hanover Road, Florham Park, New Jersey 07932 www.ascovalve.com
Page 2 of 4 Form No.V6584R8
facilitate wiring, the solenoid may be rotated 360_. For the watertight and
explosionproof solenoid, electrical fittings must be approved for use in the
approved hazardous locations.
CAUTION: Cryogenic Applications - Solenoid lead wire
insulation should not be subjected to cryogenic temperatures.
Adequate lead wire protection and routing must be provided.
Additional Wiring Instructions For Optional Features:
S Open-Frame solenoid with 1/4I spade terminals.
For solenoids supplied with screw terminal connections use #12-18 AWG
stranded copper wire rated at 90_C or greater. Torque terminal block screws
to 10 ± 2 in-lbs [1,0 ± 1,2 Nm]. A tapped hole is provided in the solenoid for
grounding, use a #10-32 machine screw. Torque grounding screw to 15 - 20
in-lbs [1,7 - 2,3 Nm]. On solenoids with screw terminals, the socket head
screw holding the terminal block to the solenoid is the grounding screw.
Torque the screw to 15 - 20 in-lbs [1,7 - 2,3 Nm] with a 5/32I hex key
wrench.
S Junction Box
The junction box is used with spade or screw terminal solenoids only and is
provided with a grounding screw and a 1/2I conduit connection. Connect
#12-18 AWG standard copper wire only to the screw terminals. Within the
junction box use field wire that is rated 90_C or greater for connections. For
steam service use 105_C rated wire up to 50 psi or use 125_C rated wire above
50 psi. After electrical hookup, replace cover gasket, cover, and screws.
Tighten screws evenly in a crisscross manner.
S DIN Plug Connector Kit No.K236034
1. The open-frame solenoid is provided with DIN terminals to
accommodate the plug connector kit.
2. Remove center screw from plug connector. Using a small screwdriver, pry
terminal block from connector cover.
3. Use #12-18 AWG stranded copper wire rated at 90_C or greater for
connections. Strip wire leads back approximately 1/4I for installation in
socket terminals. The use of wire-end sleeves is also recommended for
these socket terminals. Maximum length of wire-end sleeves to be
approximately 1/4I.ĂTinning of the ends of the lead wires is not
recommended.
4. Thread wire through gland nut, gland gasket, washer and connector cover.
NOTE: Connector housing may be rotated in 90_ increments from position
shown for alternate positioning of cable entry.
5. Check DIN connector terminal block for electrical markings. Then make
electrical hookup to terminal block according to markings on it. Snap
terminal block into connector cover and install center screw.
6. Position connector gasket on solenoid and install plug connector. Torque
center screw to 5 ± 1 in-lbs [0,6 ± 1,1 Nm].
NOTE: Alternating current (AC) and direct current (DC) solenoids are built
differently. To convert from one to the other, it may be necessary to change
the complete solenoid including the core and solenoid base sub-assembly,
not just the solenoid. Consult ASCO.
Installation of Solenoid
Solenoids may be assembled as a complete unit. Tightening is accomplished
by means of a hex flange at the base of the solenoid.
Installation of Panel Mounted Solenoid (See Figure 1)
1. Disassemble solenoid following instruction under Solenoid Replacement
then proceed.
2. Install solenoid base sub-assembly through customer panel.
3. Position spring washer on opposite side of panel over solenoid base
sub-assembly.
4. Replace solenoid, nameplate/retainer and red cap.
5. Make electrical hookup, see Wiring section.
Solenoid Temperature
Standard solenoids are designed for continuous duty service. When the
solenoid is energized for a long period, the solenoid becomes hot and can be
touched by hand only for an instant. This is a safe operating temperature.
MAINTENANCE
WARNING: To prevent the possibility of death,
serious injury or property damage, turn off electrical
power, depressurize solenoid operator and/or valve,
and vent fluid to a safe area before servicing.
Cleaning
All solenoid operators and valves should be cleaned periodically. The time
between cleaning will vary depending on medium and service conditions. In
general, if the voltage to the solenoid is correct, sluggish valve operation,
excessive noise or leakage will indicate that cleaning is required. Clean
strainer or filter when cleaning the valve.
Preventive Maintenance
S Keep the medium flowing through the solenoid operator or valve as free
from dirt and foreign material as possible.
S While in service, the solenoid operator or 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. Replace any worn or damaged parts.
Causes of Improper Operation
S Faulty Control Circuit: Check the electrical system by energizing the
solenoid. A metallic click signifies that the solenoid is operating. Absence
of the click indicates loss of power supply. Check for loose or blown fuses,
open-circuited or grounded solenoid, broken lead wires or splice
connections.
S Burned-Out Solenoid: Check for open-circuited solenoid. Replace if
necessary. Check supply voltage; it must be the same as specified on
nameplate/retainer and marked on the solenoid. Check ambient
temperature and check that the core is not jammed.
S Low Voltage: Check voltage across the solenoid leads. Voltage must be at
least 85% of rated voltage.
Solenoid Replacement
1. Disconnect conduit, coil leads, and grounding wire.
NOTE: Any optional parts attached to the old solenoid must be reinstalled
on the new solenoid. For 3-way construction, piping or tubing must be
removed from pipe adapter.
2. Disassemble solenoids with optional features as follows:
S Spade or Screw Terminals
Remove terminal connections, grounding screw, grounding wire, and
terminal block (screw terminal type only).
NOTE: For screw terminals, the socket head screw holding the terminal
block serves as a grounding screw.
S Junction Box
Remove conduit and socket head screw (use 5/32 I hex key wrench) from
center of junction box. Disconnect junction box from solenoid.
S DIN Plug Connector
Remove center screw from DIN plug connector. Disconnect DIN plug
connector from adapter. Remove socket head screw (use 5/32
I hex key
wrench), DIN terminal adapter, and gasket from solenoid.
3. Snap off red cap from top of solenoid base sub-assembly. For 3-way
construction with pipe adapter (Figure 3), remove pipe adapter,
nameplate and solenoid. Omit steps 4 and 5.
4. Push down on solenoid. Then using a suitable screwdriver, insert blade
between solenoid and nameplate/retainer. Pry up slightly and push to
remove.
NOTE: Series 8202G solenoids have a spacer between the nameplate/
retainer and solenoid.
5. Remove solenoid from solenoid base sub-assembly.
6. Reassemble in reverse order of disassembly. Use exploded views for
identification and placement of parts.
7. Torque pipe adapter to 90 inch-pounds maximum [10,2 Nm maximum].
Then make up piping or tubing to pipe adapter on solenoid.
Disassembly and Reassembly of Solenoids
1. Remove solenoid, see Solenoid Replacement.
2. Remove spring washer from solenoid base sub-assembly. For 3-way
construction, remove plugnut gasket.
3. Unscrew solenoid base sub-assembly from valve body.
4. Remove internal solenoid parts for cleaning or replacement. Use
exploded views for identification and placement of parts.
5. If the solenoid is part of a valve, refer to basic valve installation and
maintenance instructions for further disassembly.
6. Torque solenoid base sub-assembly and adapter to 175±25 in-lbs
[19,8±2,8 Nm].
ORDERING INFORMATION FOR ASCO SOLENOIDS
When Ordering Solenoids for ASCO Solenoid Operators or Valves, order
the number stamped on the solenoid. Also specify voltage and frequency.