Liberty Pumps Pro370 Serie Manual Del Usuario página 8

VENT
Figure 10. Example Pro380-SD Alternative Venting
Piggyback Switch Operation
RISK OF ELECTRIC SHOCK
 Single-phase 208/230V pumps shall only be operated
without the float switch by using the circuit breaker or panel
disconnect.
 Some products may have internal capacitors that could cause
shock. Avoid contact with plug ends after removing from
energy source.
All Pro370 and vertical discharge Pro380-Series models come
factory-equipped with the float switch mounted on the QuickTree
assembly. 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 (motor) cord to be
plugged into the back of it (Figure 11). The purpose of this design
is to allow manual operation of the pump.
NO!
Figure 11. Piggyback Switch Operation
For automatic operation, the two cords should be
interconnected and plugged into a separately fused, grounded
outlet of proper amp capacity for the selected pump 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 and using the circuit breaker or
panel disconnect to operate the pump.
8 | EN
SYSTEM
DISCHARGE
YES! Temporary Manual
Operation
Copyright © Liberty Pumps, Inc. 2020 All rights reserved.
Automatic Pump Direct Wiring
RISK OF SERIOUS INJURY OR DEATH
 In 208/230V installations, one side of the line going to the
pump is always "hot", whether the float switch is on or off. To
avoid hazards, install a double pole disconnect near the
pump installation.
If a 1-phase pump will be wired directly into a junction box, and it
is necessary to remove the plug, a certified electrician shall
complete the wiring in accordance with the National Electric Code
and applicable local codes. A disconnecting means for the pump
shall be located in sight from the pump/basin location. See
Figure 12 for direct wire installation of 1-phase, automatic pumps.
Junction Box
Power
Ground
Supply
Green
White
Black
Black
Figure 12. Direct Wiring of 115V or 208/230V, 1-Phase, Automatic
Access Cover and Float Switch
Control
370/380-Series Vertical Discharge
Liberty Pumps Pro370 systems and vertical discharge 380-Series
systems feature QuickTree technology. Floats for both pump
activation and alarm (if equipped) are mounted on the QuickTree,
separate from the pump.
The QuickTree float system uses a stainless steel mounting rod
(tree) and specially designed cord clamping brackets to affix the
pump float and (optional) alarm float in the system. All floats are
preset at the factory at optimum operating levels and should
not be adjusted. Field adjusting floats may cause improper
activation or turn-off of the pump and optional alarm.
QuickTree removal and float inspection: The QuickTree system
is located under the separate access cover to help ease inspection,
service, and replacement of a float. To inspect the float(s), simply
unbolt the access cover and lift out the QuickTree assembly from
its holder. There is no need to disconnect plumbing or remove the
pump. Vertical discharge systems feature a manual pump (with no
switch attached directly to the pump). Operation of the pump is
accomplished by the QuickTree system.
Re-inserting the QuickTree: After service or inspection of the
floats, re-insert the QuickTree into its holder. It is important that
cords from the pump motor, float switch, and optional alarm float
are properly sealed in the specially designed rubber sealing
channels under the access cover. Proper sealing is required to
keep sewer gas from leaking from the system. Place the cords
securely in the rubber channels as shown in Figure 13 [left], being
careful to remove excessive cord "slack" from inside the system.
Green
White
Black
White
Float
Switch
Pump
7225000J