Flowserve 72 Series Electri-SAFE - Manual (Page 6)

6 Series 72 “Electric-SAFE” On/Off Operation Including CLC Option WCAIM2049
MAINTENANCE AND
TROUBLESHOOTING
CAUTION: THE ACTUATOR MUST BE ISOLATED ELECTRICALLY
BEFORE ANY MAINTENANCE ACTIVITY OR COVER REMOVAL IS
BEGUN.
I. MAINTENANCE:
Periodic checks should be performed to make certain that all
mounting fasteners remain tight.
II. TROUBLESHOOTING
Any visible oil leakage is cause to replace the actuator. The
actuator cannot be repaired and refilled with oil in the field.
A. If actuator does not function, check to make sure:
1. That valve is free to rotate. This can be done as described
in Manual Operation.
2. That actuator is the correct size.
3. That correct voltage is supplied to actuator.
4. That the motor is running, but the actuator does not
move. If so, then replacement of the actuator may be
required.
B. If proper voltage has been verified and valve is free, proceed
as follows:
1. Shut off power to the actuator and remove the limit
switch cover.
2. Inspect all connections to the terminal strip and check for
loose wires.
3. Turn on power to the actuator.
a WARNING: EXPOSED ELECTRICAL CONNECTIONS
CAN CAUSE SEVERE SHOCK. CARE MUST BE TAKEN TO
PREVENT SHORT CIRCUIT CONNECTIONS FROM
FINGERS, SCREWDRIVERS, AND TOOLS.
4. Check to see that the limit switch adjustment screws are
set properly. If screws are tightened too much, the limit
switch SW-1 will not allow the motor to run and the
actuator will not operate. See “OPERATION, Section D”
for adjustment procedure. Limit switch SW-2 does not
affect the operation of the actuator.
5. If the motor still does not operate, turn off power to the
actuator and replace the motor capacitor. If the motor still
does not operate, replace the actuator.
6. Replace the cover gasket and cover, tightening all of the
cover screws.
C. If the actuator opens, but drifts closed and reopens in a
cyclical operation:
1. Cycle the actuator a few times to see if the ball check
valve will reseat.
2. If not, replace the actuator. The problem lies internal to
the fluid passageway check valve and cannot be fixed in
the field.
D. If the actuator does not open, but the motor is running:
1. Remove the cover on the solenoid end of the actuator
opposite the limit switch end.
2. Check the normally open solenoid to make sure the coil
has voltage.
3. Replace the coil on the normally open solenoid if
necessary.
NOTE: When removing the solenoid, attach a chase string
or wire to the coil wires as you pull the coil wires through
the actuator. This will make feeding the new coil wires
much easier.
4. If the solenoid coil has voltage and is operating properly,
replace the actuator. Solenoid valve replacement cannot
be done in the field without introducing air into the
hydraulic system, and should be done at the factory.
Flow Control Division
Worcester Controls