Power-Flo Pumps & Systems • 877-24PUMPS • www.powerfl opumps.com
10
By adjusting the cord tether the control
level can be changed.
DO NOT USE THE
POWER CABLE TO LIFT PUMP.
Thermal Protection:
The normally closed (N/C) over
temperature sensor is embedded in the
motor windings and will detect excessive
heat in the event an overload condition
occurs.
The thermal sensor will trip when the
windings become too hot and will
automatically reset when the pump
motor cools to a safe temperature.
It is recommended that the thermal
sensor be connected in series to an alarm
device to alert that an overtemperature
condition and/or motor starter coil to
stop pump.
In the event of an overtemperature,
the source of this condition should be
determined and repaired immediately.
Thermal protection shall not be used as a
motor overload device.
Pre-Operation
1. Check Voltage and Phase
Compare the voltage and phase
information stamped on the pump
name
plate.
2. Plug cord into an 200 or 230 volt
receptacle with ground fault circuit
interrupter
(GFCI)
3.
Check Pump Rotation
- Improper
motor rotation can result in poor
pump performance and can damage
the motor and/or pump. Check
rotation by momentarily applying
power and observe the “kickback”.
Kickback should always be in a
counter-clockwise direction as
viewed from motor end or opposite
to impeller rotation. Incorrect rotation
for Single-Phase pumps is unlikely.
If the rotation is incorrect contact
factory.
4.
Name Plate
- Record the information
from the pump name plate to
drawing in front of manual for future
reference.
5.
Pump-Down Test
- Be sure pump
has been plugged in, lowered into
the basin or sump, check the system
by filling with liquid and allowing the
pump to operate through its
pumping cycle. The time needed to
empty the system, or pump-down
time along with the volume of water,
should be recorded.
Maintenance
No lubrication or maintenance is required.
Perform the following checks when pump
is removed from operation or when pump
performance deteriorates:
a). Inspect motor chambers for oil level
and
contamination.
b). Inspect impeller and body for
excessive build-up or clogging.
c). Inspect motor and bearings.
d). Inspect seal for wear or leakage.
Servicing
NOTE: Item numbers in ( ) refer to Figures
10 & 11.
Cooling Oil -
Anytime the pump is
removed from operation, the cooling oil
in the motor housing should be checked
visually for oil level and contamination.
To check oil, set unit upright. Loosen
gland nut (3), remove cap screws (22) and
lockwashers (11) from upper housing
(19) and carfully slide up the power cable
and lay off to the side. Remove pipe plug
(4) from housing (15). With a flashlight,
visually inspect the oil in the housing (15)
to make sure it is clean and clear, light
amber in color and free from suspended
particles.
Milky white oil indicates the presence of
water. Oil level should be just above the
motor when pump is in vertical position.
Oil Testing
• Drain oil into a clean, dry container by
placing pump on it’s side. Remove
upper housing (19) then remove pipe
plug (4), from housing (15).
• Check oil for contamination using an
oil tester with a range to 30 Kilovolts
breakdown.
• If oil is found to be clean and
uncontaminated (measuring above
15 KV. breakdown), refill the housing.
• If oil is found to be dirty or
contaminated (or measures below
15 KV. breakdown), the pump must
be carefully inspected for leaks at the
shaft seal, cable assembly, square ring
and pipe plug, before refilling with oil.
To locate the leak, perform these
pressure
tests.
After leak is repaired, dispose of old oil
properly, and refill with new oil.
Upper Housing Pressure Test:
See Figure 3. Remove pipe plug (4) from
housing (19). Apply pipe sealant to
pressure gauge assembly and tighten
into hole. Pressurize upper motor
housing to 10 P.S.I. Use soap solution
around the sealed area above the oil
level and inspect for “air bubbles” around
the joint between the upper housing
(19) and lower housing (15). Also check
around gland nut and power cable. If,
after five minutes, the pressure is still
holding constant, and no “bubbles” /
oil seepage is observed, slowly bleed
the pressure and remove the gauge
assembly. If no leak has been found,
continue to the Lower housing Test.
Installation & Service
PFGPC - 2HP
Submersible Grinder Pumps
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