Wiring Instructions - Liberty Pumps LGV Serie Manual De Instalación

Seal Failure Probes
Dual seal LEP-Series pumps have a leak detection device mounted
in an oil-filled cavity located between the two mechanical shaft
seals. The device consists of two probes with a 200k Ω resistor
mounted between them. The circuit can be tested by checking for
continuity between the seal leak wires; refer to the applicable
wiring diagram (Figure 2/Figure 1). If the lower (outer) shaft seal
begins to leak and water migrates into the cavity, it will be
detected. Once a shaft seal failure is detected, the pump will
continue to operate but service should be scheduled as soon as
possible.
The LEP-Series control panels by Liberty Pumps have a seal leak
detection system with a test button that monitors the integrity of
the seal leak circuit and components. When pressed, the light
should illuminate. The light should go off when the test button is
released. If it remains on, the potentiometer is set too high. If the
light does not illuminate, the light is burned out, the circuity is
open, or the system does not have power. The seal leak relay
requires adjustment upon installation. See Seal leak relay setup
on page 8.
Seal fail probes connect to a relay in the control panel, which is
included in a Liberty Pumps control panel. For a non-Liberty
Pumps control panel or for a replacement relay, refer to Table 2.
Table 2. Seal Fail Replacement Relay
Relay
Description Input
Voltage
120V
Simplex, controls
1 pump
240V
120V
Duplex, controls
2 pumps
240V

Wiring Instructions

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.
 All installation and maintenance of pumps, controls,
protection devices, and general wiring shall be done by
qualified personnel.
 All electrical and safety practices shall be in accordance with
the National Electrical Code
Health Administration, or applicable local codes and
ordinances.
6 | EN
Liberty
Macromatic
Pumps
P/N
P/N
K001672 SFP120A250
K001673 SFP240A250
K001675 SFP120C250
K001676 SFP240C250
®
, the Occupational Safety and
Copyright © Liberty Pumps, Inc. 2020 All rights reserved.
1PH 200/230V 3PH (2Y)
1
M1 1
M1
7
5
2
M2 2
M2
4
8
6
3
Start 3 M3
9
15HP XLG MODELS ONLY
200/230V 3PH (2D) 460V 3PH (1D)
1 6 7
M1 M1 1 4
2 4 8
M2 M2 2 5
3 5 9
M3 M3 3 6
SINPAC START SWITCH
4-7-72050-15-U03
15K
1 2 3 4
START CAP
270–324 μFD, 330 VAC
SEAL LEAK THERMOSTAT
CONTROL
CABLE
POTTING RESIN FOR
SEAL FAILURE
PROBES
THERMOSTAT
Figure 1. Permanent Cord 1-Phase Wiring
575V 3PH
460V 3PH (1Y)
(WYE&DELTA)
M1 1 4 7 M1
M2 2 5 8 M2
M3 3 6 9 M3
COLOR
LEAD NO.
1 BLUE
2 WHITE
3 ORANGE
4 YELLOW
7
5 BLACK
6 PURPLE
7 PINK
8
8 RED
9 GRAY
9
J BROWN
L 2
L 1
RUN CAP
80 μFD,
370 VAC
POWER
CORD
HAZLOC PUMPS
MOTOR
7550000F
1
2
3