Maintenance And Troubleshooting; Important - Liberty Pumps Residential 404 Manual De Instalación

INLET: The pump has two ports: one on the top the other on the side, either can be used as a vent or inlet. Using the appropriate
piping (1-1/2" on the model 404 and 2" on models 405, 405HV) connect the fixture to the pump. Note: a trap shall be used between the
fixture and pump, a flange type is recommended. HAND-TIGHTEN TO PUMP. DO NOT OVERTIGHTEN OR CROSS-THREAD.
A. DISCHARGE: HAND-TIGHTEN ONLY. Install a union just above the pump to facilitate removal if necessary for cleaning or
service. Install a check valve just above the union (as close to the pump as possible) to prevent the backflow of water after each
pump cycle.
B. VENT: Provision is made for a vent stack to allow extra volume for high suds conditions, and to ensure proper drainage of the
fixture. HAND-TIGHTEN ONLY. DO NOT CAP-OFF VENT. DO NOT use ONE-WAY QUICK-VENTS or AIR ADMITTENCE
VALVES as they will not guarantee proper fixture performance. The vent pipe should have a union to facilitate removal if required
and shall be connected directly to a building or house vent.
C. POWER CORD: The pump power cord is equipped with a grounding conductor and grounding-type 3-prong plug. It should be
connected to a separately fused, grounded, 3-wire grounding-type receptacle of 15-amp capacity with the proper voltage for your
model. Make sure all electrical wiring and connections are in accordance with the National Electric Code and all applicable local
codes.
MODEL 404 - 115 volts
MODEL 405 - 115 volts
MODEL 405HV - 230 volts

Risk of electric shock. Always disconnect the pump from
the power source before handling or making adjustments.

DO NOT remove the plug or ground prong.

DO NOT use an extension cord.
The 404 and 405-series pumps come factory-equipped with a float switch mounted within the tank. These models come with two
cords - one to the float switch and the other to the pump motor. The switch cord has a series (piggyback) plug enabling the pump cord
to be plugged into the back of it (see Fig. 4). The purpose of this design is to allow temporary manual operation of the pump.
For automatic operation using Liberty's supplied switch, the two cords should be interconnected and plugged into a separately fused,
grounded outlet of proper amp capacity for your selected pump model. (See the pump's nameplate for electrical specifications of your
model.) Both cords are equipped with 3-prong plugs and must be plugged into a properly grounded 3-wire receptacle. DO NOT
REMOVE THE GROUND PRONGS.
For manual operation, or in the event of switch failure, the pump cord can be separated and plugged into the electrical outlet, directly
bypassing the switch. 208-230V single phase pumps should only be operated without the float switch by using the circuit breaker or
panel disconnect. Do not let the pump run dry for extended periods.
Application: The 404 and 405-series drain pumps are designed for use in gray wastewater applications. They will handle small debris
and solids such as laundry lint (up to 3/8") associated with normal gray water drainage from a sink. Larger solids should be kept out of
the pump system. The 405-series is designed for commercial applications where higher temperature drain water (up to 180 degrees F.)
may be used.

3. Maintenance and Troubleshooting

Each unit is individually factory tested to ensure proper adjustment and operation. If the unit fails to operate properly, carefully re-read
the instructions to see that they have been followed correctly. Routine maintenance is not required on the pump itself, but associated
connections may require occasional attention. Lint and foreign objects should be removed from the trap periodically. The check valve
on the discharge should also be checked for freedom of operation at the same time.
The pump is automatically turned on and off by use of a float switch mounted within the tank. This switch can be easily removed and
checked for operation by removing the access cover located on top of the unit. Once the access cover has been removed a rubber plug
must be lifted to free up the switch cord. The switch is mounted to a rod which can be removed by lifting or pulling upward.
IMPORTANT: Do not adjust the tether length. If replacing the switch, make sure to maintain the correct tether length for your
model per the following diagram. (Tether length is the distance of cord measured between the clamp and top of float switch.)
©Copyright 2012 Liberty Pumps Inc. All rights reserved
Fig. 1 Piggyback plug installation.
NORMAL
DON'T!
TEMPORARY
MANUAL
OPERATION
3