Multiquip submersible pumps px400 - Manual (Page 19)

cx400/px400 Sub. pump • operation and partS manual — rev. #1 (12/03/10) — page 19
connecting dual float Switch (SW-1Wop) to
control box
1. Remove the float switch input connector housing, then
route the float switch wires through the cable gland on
the control box. Attach the wires of the float switch to
the terminal block as indicated by Table 5 and Figure 10.
2. Tighten the connector housing to ensure a tight fit
between the cord and the connector body. This will
prevent the cable from pulling out of the terminal block
and also prevent moisture from entering the control
box.
3. Determine the tether length of the float switch wires
then secure float switch wires to pump discharge hose.
See Figure 8 or Figure 9 and Table 3 to determine the
pumping range.
connecting ac power to the cb3 control box
1. The AC input power cord (not included) should have
three wires. Each wire is color coded. The colors are
WHite, blacK and green.
2. Remove the AC input connector housing from the
control box, then route the power cord through the
cable gland on the control box.
3. Connect the AC input power cord to the contactor
located inside the control box as shown in Figure 10,
and Table 6.
Table 5. dual Float switch connections
Float
Switch
Terminal
block no.
Wire
Color
Start
TB1-A1
TB1-A2 Black
White
Stop
TB1-B8
TB1-B7 Black
White
Table 6. 1Ø-115 vac power
Connections
Wire Color Contactor.
BLACK L1
WHITE L2
GREEN GROUND
OperatiOn
4. Connect the other end of the AC power cord to the
voltage source. Remember to provide a means of
disconnecting the power from the control box (circuit
breaker or quick disconnect switch). Also make sure
to provide a good earth ground to the control box
Connecting AC Power to the Pump Motor
1. AC power is routed to the pump motor via a contactor.
The coil of the contactor is energized or de-energized
by the opening and closing of the float switch contacts.
2. The power cord (included with pump) should have three
wires. Each wire is color coded. The colors are WHite,
blacK and green.
3. Remove the pump AC input connector housing from
the control box, then route the power cord through the
cable gland on the control box.
4. Connect pump power cord to the contactor as shown
in Figure 10, and Table 7.
NOTICE
It is recommended that the power being supplied to the
control box alWaYS be connected to a circuit breaker
or a quick disconnect switch. This safety feature
allows for quick removal of power from the control box
in the event of an emergency.
table 7. ac output power
Connections To Pump
Wire Color contractor
BLACK T1
WHITE T2
GREEN Ground