Liberty Pumps XFL50 Serie Manuel D'installation page 4

Note: All XFL – Series Pumps require a separate approved pump control device or panel for automatic operation. Operation of these
models will be according to the control selected. Make sure the electrical specifications of the control selected properly match the
electrical specifications of the pump. 3 phase models require overload elements selected or adjusted in accordance with the control or
panel instructions. The panel must have provisions for the thermostat that open the motor contactors. Do not exceed voltage / current
combinations for the thermostat: 16 Vdc / 20 Amps, 115 Vac / 22 Amps, 277 Amps / 8 Amps, and 600 Vac / 4 Amps. All models have a
temperature (T) class rating of T4; however, if thermostat is not connected on three phase units the T class drops to T3. The float
switches must be connected to an intrinsically safe circuit in the control panel. The minimum water depth should be set at 9" to properly
cool the motor. Single phase (1ph) pumps require a special run capacitor in the panel. See table below for proper specifications.
XFL51M-2
XFL51M-3
XFL52M-2
XFL52M-3
XFL71M-2
XFL71M-3
XFL72M-2
XFL72M-3
These pumps are to be used for handling septic tank effluent, sewage, and drain (storm) water – the pumps are CSA listed , UL
accepted, and tested to FM standards for hazardous locations Class 1, Division 1, Group C and D. Do not use in other hazardous
locations.
The pump must be serviced at a qualified hazardous motor enclosure repair facility approved by Liberty Pumps. Any unauthorized
field repairs voids warranty and hazardous location ratings. Contact Liberty Pumps at 1-800-543-2550 to locate the closest repair
facility.
The XFL - Series Pumps are protected from overheating and the motors are equipped with a thermal switch. For single phase (1ph) a
hermetically sealed thermal overload device is mounted on the motor windings and wired directly in series with the motor's winding.
On three phase (3ph) motors, two thermostats mounted in series directly on the windings control the pump's internal temperatures.
The thermostat must be connected in such a way to open the motor contactors in the panel cutting power to the pump in an over heat
condition. Both single and three phase (1ph & 3ph) pumps are designed to operate under class B insulation with a heat rise of 266°F or
130°C internal temperatures, even though the motors are constructed with class F materials. Failure to use the proper circuity and
connection of the thermostat will drop T class to T3 on three phase units.
Note: when connecting a XFL – Series pump to an existing control panel, make certain the panel is correctly sized for the pump.
Many panels have a manual reset button for the thermostats on three phase units. This button must be pressed to reset the system after
the pump has cooled. Single phase units automatically reset after the pump has cooled.
All XFL – Series pumps are equipped with two mechanical face seals with an oil chamber between them to provide permanent
lubrication to the seals. A seal fail or moisture sensing device is located in the mid oil chamber and continuously monitors for leakage.
An indicator light will illuminate on the control panel indicating a shaft seal failure has occurred and the pump is in need of service.
The pump will continue to operate as normal and service should be scheduled as soon as possible.
The ISS AND ISD Series panels by Liberty Pumps have a seal leak test button that tests the integrity of the seal leak circuit continuity.
When pressed, the light should illuminate. If it does not, either the light is burned out or the circuity is open. The seal leak module is
located Inside the panel and requires adjustment upon installation. The dial should be set to 75, for best results turn the dial until the
light turns on around 125 then turn it back to 75.
SERVICE:
The pump must be pulled from the sump; prior to any service - disengage electrical power to the pump prior to performing any work.
Sewage water gives off methane and hydrogen sulfide gases which are poisonous. Proper personal protection
equipment should be worn.
In the event the pump becomes clogged, the inlet screen can be removed to gain access to the pump's impeller. Once the obstruction is
removed the anti air lock hole should be cleaned.
The lower shaft seal is field serviceable; however, a certified repair shop should perform this task because they have the capability to
clean and flush the mid oil chamber.
This is the only work or maintenance that can be performed. All other maintenance or service such as cord replacement requires a
Certified repair shop. Contact Liberty Pumps at 1-800-543-2550 to locate the closest authorized hazardous duty motor repair shop.
MODEL
XFL51BM-2
XFL51BM-3
XFL52BM-2
XFL52BM-3
XFL71BM-2
XFL71BM-3
XFL72BM-2
XFL72BM-3
©Copyright 2015 Liberty Pumps Inc. All rights reserved
RUN CAPACITOR
50 uf 370V
50 uf 370V
45 uf 370V
45 uf 370V
50 uf 370V
50 uf 370V
45 uf 370V
45 uf 370V
CAPACITOR KIT
K001515
K001515
K001514
K001514
K001515
K001515
K001514
K001514
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