Flowserve 72 Series Electri-SAFE - Manual (Page 2)

2 Series 72 “Electric-SAFE” On/Off Operation Including CLC Option WCAIM2049
Flow Control Division
Worcester Controls
b. For 1 /
4
"–2" 44, 1 /
2
"–2" WK70 & WK74, 1 /
4
"–1 1 /
2
" 59 and
1 /
2
"–1 1 /
2
" H71 series top-mount style valves and 1 /
2
"–2"
51/52 and 1 /
2
"–1 1 /
2
" 82/83 Series valves with high-cycle
stem packing as standard, remove handle nut,
lockwasher, handle, separate stop plate (if any), retaining
nut and stop pin(s). Add the two additional Belleville
washers with their larger diameter sides touching each
other. Add the self-locking nut to the stem and tighten
while holding the stem flats with wrench. Tighten until
Belleville washers are flat, the nut will "bottom", and then
back nut off
1 /
3
of a turn. The two additional Belleville
washers and the self-locking nut are included in the
mounting kit.
CAUTION: The self-locking stem nut is difficult to
tighten, and must fully flatten Belleville washers before
backing off.
For 2" 59, H71, 82/83 and 2 1 /
2
" 45, 82/83 valves, and
valves 3" and larger with square stem, remove handle
assembly, retaining nut, stop and stop screws. Replace
with valve stem spacer or, if valve has graphite stem
packing, with two Belleville washers, and replace
retaining nut.
NOTE: Belleville washers are installed with their larger
diameter sides touching each other. Do not use stem
spacer when Belleville washers are used. Using a wrench
to prevent stem from turning, tighten retaining nut until
stem packing is fully compressed or Bellevilles, if used,
are fully flattened, then back off nut
1 /
6
turn. Excessive
tightening causes higher torque and shorter seal life.
Large valves with V51 high-cycle stem packing option
installed, (identified by two Belleville washers installed
and handle assembly, stop, and stop screws removed),
and 818/828 Series valves do not require stem area
disassembly.
For 1 /
2
"–2" 94 valves, remove handle (if any). Do not
remove gland plate or gland bolts.
For 3"–4" 94 & 2"–3" E818/828 valves, remove handle
assembly, stop, and spacer (if any). Do not remove gland
plate or gland bolts.
For 2"–3" 818/828 valves, remove handle assembly,
locking plates and hardware, and stop screw (if any).
Do not remove stop plate.
c. Center coupling on valve stem.
d. Lower mounting bracket/actuator assembly over coupling
and onto valve, making sure that male actuator shaft
engages slot in coupling.
e. Secure bracket to valve using cap screws and
lockwashers, or bolts and nuts provided in mounting kit.
Tighten securely. For small top-mount style valves,
bracket nameplate will be to side of valve.
Install set screws (if any) in the coupling and tighten
securely.
f. Determine if mode of operation is as desired; if not:
Fail-Safe Actuators - The normal method of mounting is
to have the actuator in-line with the pipe line and the
valve and actuator in the “FAIL-CLOSED” position.
For “FAIL-CLOSED” cross-line operation, invert actuator
and cross-line mount actuator to pipe line.
For “FAIL-OPEN” in-line operation, invert actuator. (NOTE:
If in-line coupling is used, actuator does not need to be
inverted.) Rotate the valve ball and stem 90°, so coupling
lines up with actuator shaft. Mount actuator in-line with
the pipe line.
For “FAIL-OPEN” cross-line operation, rotate the valve ball
and stem 90°, so coupling lines up with actuator shaft.
Mount actuator cross-line to pipe line.
g. Determine position indication. Buttons on position
indicator are set up to show valve closed on in-line
mounting, i.e., pistons together on actuator. If different
indication is required:
1. Check which visual indication is required.
2. Check that indicator, when located on actuator shaft,
will show correct indication.
3. To change indication, push out (remove) red and
white buttons and reassemble in opposite positions.
4. Locate indicator on actuator shaft flats. Press firmly
until location nibs snap into recess on actuator shaft.
ELECTRICAL INSTALLATION
AC Electrical Supply (on/off models with one integral solenoid):
With assembly complete to this point, it is convenient to make
conduit connections and bring wiring through enclosure. It should be
noted that the successful use of this device in hazardous atmospheres
or other detrimental environments depends on proper conduit
construction techniques.
The solenoid coil wattage and required amperage is as follows:
Voltage Holding Amps* Watts
120 VAC 50/60 HZ .2 10
240 VAC 50/60 HZ .1 10
*Inrush is 80% greater than Holding values on AC solenoids.
A. Remove limit switch cover and gasket.
B. Attach power supply wires to terminal strip locations 7 and 8 per
the wiring diagram shown below and also located on the inside of
the limit switch cover.
NOTE: All wiring to terminal strip should be inserted only to mid-
point of strip.
C. Attach the ground wire to the customer’s green grounding screw
located on the limit switch casting flange face.