6
Use the pump H-O-A (Hand-Off-Automatic) switches in
Hand to test the pumps. If they operate well in Hand pro-
ceed to test Automatic operation. If the pumps run but
fail to pump, they are probably air locked, drill the relief
holes per the instructions in the Piping Section.
Place Control Panel switch(es) in Automatic position and
thoroughly test the operation of the ON, OFF, and Alarm
floats by filling the wetwell with clear water.
Important:
Failure to provide a Neutral from the power supply to a
1Ø, 230 volt Control Panel will not allow the panel control
circuit to operate. The Neutral is necessary to complete
the 115 volt control circuit.
Check voltage and amperage and record the data on the
front of this manual for future reference. Compare the
amperage readings to the pump nameplate maximum
amperage. If higher than nameplate amperage investi-
gate cause. Operating the pump off the curve, i.e. with
too little head or with high or low voltage will increase
amperage. The motor will operate properly with voltage
not more than 10% above or below pump nameplate
ratings. Performance within this range will not necessarily
be the same as the published performance at the exact
rated nameplate frequency and voltage. Correct the
problem before proceeding. Three phase unbalance is
also a possible cause.
See Three Phase Power Unbalance
and follow the instructions
.
Reset the Alarm circuit, place pump switch(es) in the Au-
tomatic position and Control Switch in ON position. The
system is now ready for automatic operation.
Explain the operation of the pumps, controls and alarms
to the end user. Leave the paperwork with the owner or
at the control panel if in a dry, secure location.
FLOAT SWITCH AND PANEL CHART
The purpose of this chart is to show the required switch
quantities and the function of each switch in a typical
wastewater system. The quantities required vary de-
pending on the switch type, single-action or wide-angle.
Switch quantities also vary by panel type: simplex with
and without alarms, and duplex with alarms.
Duplex Panels using single-action switches:
Three Float Panel Wiring
SW1
Bottom
Pumps Off
SW2
Middle
1st Pump On
SW3
Top
2nd Pump & Alarm On
Four Float Panel Wiring
➁
SW1
Bottom
Pumps Off
SW2
2nd
1st Pump On
SW3
3rd
2nd Pump On
SW4
Top
Alarm On
Duplex Panels using wide-angle switches:
Three Float Panel Wiring
SW1
Bottom
1st Pump On/Both Off
SW2
Top
2nd Pump & Alarm On
Four Float Panel Wiring
SW1
Bottom
1st Pump On/Both Off
SW2
Middle
2nd Pump On
SW3
Top
Alarm On
Simplex Panel using single-action switches:
Simplex Panel with Alarm
①
SW1
Bottom
Pump Off
SW2
Middle
Pump On
SW3
Top Alarm On/Off
Simplex Panel with No Alarm
SW1
Bottom
Pump Off
SW2
Top
Pump On
Inlet
Alarm SW3
Pump On SW2
Pump Off SW1
Discharge
Inlet
Alarm SW4
Lag Pump On
SW3
Pump Off
SW1
Discharge
Lead Pump On
SW2
Simplex
①
Duplex
➁
Simplex Panel using wide-angle switches:
Simplex Panel with Alarm
SW1
Bottom
Pump On/Off
SW2
Top
Alarm On/Off
Simplex Panel with No Alarm
SW1
Pump On/Off
