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Power-Flo Pumps & Systems • 877-24PUMPS • www.powerflopumps.com
Receiving Inspection
Upon receiving the pump, it should be
inspected for damage or shortages.
If damage has occurred, file a claim
immediately with the company that
delivered the pump. If the manual is
removed from the packaging, do not
lose or misplace.
Storage
Any product that is stored for a period
longer than six (6) months from the
date of purchase should be bench
tested prior to installation. A bench
test consists of, checking the impeller
to assure it is free turning and a run
test to assure the motor (and switch
if provided) operate properly. Do not
pump out of liquid.
Location
Locate pump as near as possible to the
liquid being pumped. Do Not place pump
more that 25 feet above the surface of the
liquid supply.
Be sure pump is level. Mount pump
firmly so not to move due to vibration.
Permanently groute onto a cerment
foundation, flex coupled and v-belt
driven units. Flex coupled units should
be realigned after grouting to eliminate
excessive wear on the coupling.
A minimum of 18 inches in front of pump
case to permit easy removal and access to
the interior of the pump. On v-belt units,
allow a minimum of 10 inches at the shaft
end to permit easyremoval of pedestal or
rotating assembly.
Controls
Be sure the electrical specification of
the control selected properly match the
electrical specifications of the pump.
Motor Connection
All wiring of motor and control, overload
protection and grounding should be in
accordance with the National Electrical
Code, State and Local codes. Make motor
connection per label located on motor or
motor manufactures manual.
Rotation
All units rotate “clockwise” as viewed
from shaft end of pump. It is necessary
to slide one half of the flex coupling back
when checking rotation to eliminate the
possibillity of unscrewing the impellers
which are threaded on the shaft.
Suction
CAUTION! - Pump should not
be operated without a suction
strainer to prevent foreign
matter from being drawn into
impeller. The strainer should be
cleaned regularly.
The use of pipe the same size as the
port size is highly recommended. Using
a smaller pipe line can cause internal
damage. Make sure all lines have air-tight
joints. The smallest air leak in the suction
line may prevent the pump from priming.
All horizontal suction lines should slope
up to the pump to avoid trapped air
pockets. All piping should be properly
supported.
Discharge
Connect discharge hose or pipe to the
discharge port. Make sure all lines have
air-tight joints.
Lubrication
Lubrication not required as seal and
impeller are water lubricated and need no
attension.
Priming
Remove pipe plug (15) in top of body
(16) and fill the pump body completely
with solids free liquid. In freezing weather
prime pump with warm water.
DO NOT operate pump without
priming first. Operating dry will
damage seal.
Starting
To start pump, apply power to motor
per the Motor or Engine manufacture’s
instructions.
Shutdown
Discontinue operation by stopping the
engine as stated in Engine Manual or by
disconnecting electric power to motor. It
is recommended to drain and flush pump
if pump has been operating in freezing
weather.
Service
Turn off and lock out power before
servicing pump.
Check Valve
Disconnect suction piping and remove
hex nuts (30), lockwashers (31) and
suction flange (22). Remove gasket
(18), weights (17), (19), screw (20) and
lockwasher (21) and replace if worn or
damaged.
To replace, the
HINGE
section of gasket is
at the
TOP
and the
LARGE
weight is on the
pump side of gasket.
Body, Volute & Impeller
Disconnect suction and discharge piping.
Remove hex nuts (4) and lockwashers (5)
then remove body (16) and o-ring (9) from
pedestal (6).
Pull volute (13) from pedestal (6). Unscrew
the impeller (11) from shaft (23) in the
right hand direction. Take note of the size
and quantity of shims (10) & (32) used.
To reassemble, use the required number
of shims (10) and (32) to result in an
impeller-to-volute clearance of .015” max.
Receiving, Installation & Service
PF5CU, PF7CU
Self-Priming Universal Pumps
