Xylem Bell & Gossett WEHT0311M Installation, Operation And Maintenance Instructions Download Page 6

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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 am-

perage readings to the pump nameplate maximum amper-

age. If higher than nameplate amperage investigate 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 waste-

water system. The quantities required vary depending on 

the switch type, single-action or wide-angle. Switch quanti-

ties 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 

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 

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 

Duplex 

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

Summary of Contents for Bell & Gossett WEHT0311M

Page 1: ...High Temp Sump Pump INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS INSTRUCTION MANUAL IM249R03...

Page 2: ...JECT PAGE Introduction 3 Safety Instructions 3 Performance and Motor Details 3 Pre Installation Checks 3 Lifting of Pump 4 Optional Guide Rail or Lift Out System 4 Piping 4 Wiring and Grounding 4 Sele...

Page 3: ...entdamage Failure tofollowmanufacturer sinstallationinstructionsmayresultin electricalshock firehazard personalinjuryordeath dam DANGER WARNING CAUTION agedequipment provideunsatisfactoryperformance a...

Page 4: ...prematuresealand orbearingwear If thepump isturningbackwardswhenitiscalledontostartthein creasedtorquemaycausedamagetothepumpmotorand ormotorshaftandsomesingle phasepumpsmayactually runbackwards Insta...

Page 5: ...bsoluterulesforwheretosetthefloatswitch es itvariesfromjobtojob SuggestedRulestoFollow AllfloatsshouldbesetbelowtheInletpipe Off Float Best setsothewaterlevelisalwaysabovethetop of thepump motordome N...

Page 6: ...vethepaperworkwiththeowneroratthe controlpanelif inadry securelocation FLOAT SWITCH AND PANEL CHART Thepurposeof thischartistoshowtherequiredswitch quantitiesandthefunctionof eachswitchinatypicalwaste...

Page 7: ...are based on readings taken with a megohmmeter with a 500V DC output Readings may vary using a lower voltage ohmmeter consult factory if readings are in question ENGINEERING DATA PUMP OPERATION Figur...

Page 8: ...lcordstangled Untanglecordsandinsurefreeoperation TURNOFF Pumpisairlocked Shutoff pumpforapproximatelyoneminute then restart Repeatuntilairlockclears If airlocking persistsinasystemwithacheckvalve a3...

Page 9: ...9 TYPICAL INSTALLATIONS Typical Effluent Sewage and Dewatering Pump Installations...

Page 10: ...10 NOTES...

Page 11: ...11 NOTES...

Page 12: ...Buyer with respect to any product or parts of a product that have been a repaired by third parties other than Seller or without Seller s written approval b subject to misuse misapplication neglect al...

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