Multiquip ST3020BCUL - Manual (Page 15)

st3020b1/bCUL sUb. pUmp • operation and parts manUaL — rev. #2 (10/28/10) — page 15
Float switches
For unattended operation of the submersible pump two Model SW1WOPA float switches will be required. These float
switches have bare wires on one end of the cable for direct connection to either the CB6 or CB200 Control Boxes. The
illustration below is an example of using two single float switches in a typical dewatering application.
flOat switches
mounting the Float switches
1. Determine the required cord tether length as shown
in Figure 5 and Table 3.
2. Place the cord into the clamp as shown in Figure 8.
3. Secure the clamp to the discharge hose as shown in
Figure 8. do not install cord under hose clamp.
4. Using a screwdriver, tighten the hose clamp. do not
over- tighten. Make sure the float cord is not allowed
to touch the excess hose clamp band during operation.
SUBMERSIBLE
PUMP
PUMP
POWER
PLUG
PUMPING
RANGE
SINGLE
FLOAT SWITCH
APPLICATION
MODEL SW1WOPA
3.5 in. (9 cm.)
MINIMUM
TETHER
LENGTH
PUMP
ON
PUMP
OFF
CONTROL
BOX
GREEN
BLACK
EXTERNAL
1Ø 230VAC, 60 Hz
POWER SOURCE
CIRCUIT
BREAKER
L1
L2
RED
GND. BUS
DISCHARGE
HOSE
Figure 8. Single Float Switch (2) Application Diagram
NOTICE
Single float switch, Model SW1A has a pumping range
between 5.5~18 in. (14~46 cm.). Dual float switch has
a pumping range between 1~ 48 in (2.54~122 cm.)