Operation; Maintenance And Troubleshooting - Liberty Pumps 404 Manuel D'installation

Inlet Air Hole (Alarm Units Only)
If the top port (hole) is used for the vent, the potential exists for
an air pocket to form that would prevent the alarm float from
activating. After the vent pipe has been installed, it is
recommended that a 1/8" hole is drilled through both the unit
and vent pipe to allow air to escape. Refer to Figure 5.
Drill air vent hole here
(through side opening)
Figure 5. Air Vent Hole Location (Alarm units only)
Power Cord
RISK OF ELECTRIC SHOCK
WARNING
 All electrical and safety practices shall be in accordance with
the National Electrical Code
Health Administration, or applicable local codes and
ordinances.
 Always disconnect pump(s) from power source(s) before
handling or making any adjustments to either the pump(s),
the pump system, or the control panel.
 Pump shall be properly grounded using its supplied
grounding conductor. Do not bypass grounding wires or
remove ground prong from attachment plugs. Failure to
properly ground the pump system can cause all metal
portions of the pump and its surroundings to become
energized.
 The electrical power supply shall be located within the length
limitations of the pump power cord, and for below grade
installations, it shall be at least 4 ft (1.22 m) above floor level.
RISK OF FIRE
WARNING
 Do not use an extension cord to power the product.
Extension cords can overload both the product and extension
cord supply wires. Overloaded wires will get very hot and can
catch on fire.
The pump power cord is equipped with a grounding-type 3-prong
plug. It must be connected to a separately fused, grounded,
3-wire grounding-type receptacle of 15-amp capacity with the
proper pump voltage (all models are 115V, except the 405HV
which is 230V). Refer to the pump nameplate to verify electrical
specifications.
Alarm
Models 404 and 405 with /A or /A-EYE come with a Liberty Pumps
alarm. For instructions on using this alarm, refer to the included
alarm manual.
7212000F
®
, the Occupational Safety and
Copyright © Liberty Pumps, Inc. 2018 All rights reserved.

Operation

The Model 404 and 405-Series pumps come factory-equipped
with a float switch mounted in the tank. There are two controlling
cords—one to the float switch (float switch shown in Figure 7) and
the other to the pump motor. The float switch cord has a series
(piggyback) plug enabling the pump motor cord to be plugged
into the back of it (see Figure 6). The purpose of this design is to
allow temporary manual operation of the pump.
NO!
Figure 6. Piggyback Plug Installation
For automatic operation using Liberty Pumps' supplied switch,
the two cords must be interconnected and plugged into a
separately fused, grounded outlet.
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. Note: Model 405HV should only be
operated without the float switch by using the circuit breaker or
panel disconnect.

Maintenance and Troubleshooting

WARNING RISK OF ELECTRIC SHOCK
 Always disconnect pump(s) from power source(s) before
handling or making any adjustments to either the pump(s),
the pump system, or the control panel.
Each unit is individually factory-tested to ensure proper
adjustment and operation. If the unit fails to operate properly,
re-read the instructions to verify they have been followed
correctly. Replacement parts for this product are available at http:/
/www.libertypumps.com/Services/Replacement-Parts.
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 (tether length is the
distance of cord measured between the clamp and top of float
switch). If replacing the switch, make sure to maintain the correct
tether length for the model. Refer to Figure 7.
YES! Temporary Manual
Operation
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