Operation; Maintenance - Franklin Electric STANDARD CENTRIFUGAL Series Owner's Manual

ALIGNMENT OF PUMP AND MOTOR
Precise alignment is mandatory to achieve correct perfor-
mance of the system. Every time a component is moved
this alignment will have to be checked. The alignment can
be checked with a straight edge and an outside caliper,
taper thickness gauge, dial indicators or, for best results,
use a laser alignment tool. Use the straight edge across
the outside diameters of the coupling to ensure that the
two halves are concentric and parallel. The outside cali-
pers or the taper thickness gauge is to correct for any an-
gular misalignment and to verify the correct gap between
the coupling fl anges. Use a laser alignment tool or dial
indicators to adjust for concentric and angular displace-
ment. With dial indicators, rotate shafts together and take
readings every ninety (90) degrees. Make adjustments by
placing shims under the driver, and be sure that the mount-
ing bolts are properly tightened while taking readings, and
after fi nal adjustment, then install coupling guard.
ROTATION
Before the pump is started, correct rotation must be con-
fi rmed. If the rotation is not correct then interchange any
two of the leads on a three (3) phase driver. For a single-
phase driver refer to the wiring diagram.
PRIMING
With a fl ooded suction use a bleed valve at the top of the
volute to allow trapped air to escape. If you are using a foot
valve, then fi ll the suction line and pump case with water
and use a bleed valve for trapped gas as above. Rotating
the pump shaft will release trapped gas in the impeller.

OPERATION

PRE-START
1. Verify that rotation is correct and that the shaft rotates
freely.
2. Check all piping connections for tightness.
3. Inspect all accessories and make sure they are appro-
priate for your installation.
4. Verify that the driver and coupling are aligned correctly
and that all guards are in place.
5. Ensure that all bearings and grease seals are
lubricated.
6. Follow the instruction on all tags, labels and decals at-
tached to the equipment.
BEFORE STARTING
C A U T I O N
Make sure the pump is level.
W A R N I N G
Do not operate the pump without
guards in place over the rotating parts. Exposed
rotating parts can catch clothing, fi ngers or tools,
causing severe injury to personnel.
STARTING
W A R N I N G
This pump is designed to handle most
non-volatile, non-fl ammable liquids containing speci-
fi ed entrained solids and corrosives. Do not attempt
to pump volatile, corrosive, or fl ammable liquids
which may damage the pump or endanger personnel
as a result of pump failure.
C A U T I O N
Pump speed and operating condition
points must be within the continuous performance
range for your specifi c pump model.
Any centrifugal pump must be primed before starting un-
less it is of a self-priming design. See preceding section
on priming and ensure suction pipe is fi lled with liquid.
With the discharge valve closed, start the pump and slow-
ly open the valve. Throttle the fl ow gradually to fully open.
Avoid any abrupt changes in the discharge fl ow rate to
prevent pressure surges in the piping. If the design pres-
sure is not achieved shut the pump down immediately.
Ensure that the pump is adequately primed and restart.
Never run the pump with the discharge valve closed for
extended periods of time. Never use the suction valve to
throttle the fl ow. Check all suction and discharge piping
for leaks.
If a suction strainer is installed, check the pressure drop
across the strainer. If the differential in pressure exceeds
fi ve (5) PSI have the strainer cleaned.

MAINTENANCE

W A R N I N G
Before any servicing:
1. Read this manual carefully.
2. Shut down driver and lock out incoming power to
ensure that the pump will remain inoperative.
3. If the pump or components are hot, allow adequate
cooling prior to servicing the unit.
4. Close the suction and discharge valves.
5. Vent the pump slowly and drain completely.
W A R N I N G
Before attempting to service this pump,
read this manual carefully. Operators and mainte-
nance personnel should have a good understanding
of all aspects of this pump and the pumping condi-
tions. Failure of operating personnel to be familiar
with all aspects of pump operation outlined in this
manual could contribute to equipment damage,
bodily injury or possible death.
W A R N I N G
Use lifting and moving equipment in
good repair and with adequate capacity to prevent
injuries to personnel or damage to equipment. At-
tach lifting equipment to the lifting device fi tted to
the pump. If chains or cable are wrapped around the
pump to lift it, make certain that they are positioned
so as not to damage the pump, and so that the load
will be balanced. Suction and discharge hoses and
piping must be removed from the pump before lifting.