Goulds STS21V Instruction Manual Download Page 4

4

4.3. Check to insure all piping connections are 

tight. The pipes should be supported by 

fastening to floor joists or wall. This will 

prevent the pump from moving in the sump. 

If it moves the switch could get stuck and 

either keep the pump running or not let it 

turn on.

4.4. The power to the outlet should be Off at 

this point. The dedicated outlet should sup-

ply power only to the pump.

4.5. Our sump pumps have either a single power 

cord for pumps with built-in switches or 

two power cords for pumps with piggyback 

switches: 
Built-In/Single Cord - plug the single power 

cord into a dedicated power outlet. 
Piggyback/Two Power Cords - insert the pig-

gyback switch male plug into a dedicated 

power outlet. You then plug the standard 

male pump plug into the back, female side, 

of the piggyback switch plug. 

4.6. Fasten the power cords to the discharge 

pipes using tie wraps or electrical tape. Coil 

and store any excess power cord outside the 

sump. 

5. OPERATION
5.1.
 Turn the power On at the breaker panel 

and/or the disconnect switch.

5.2. Fill the basin with water and observe where 

the pump turns On and Off. It should go On 

well before the water overflows the top of 

the sump. The pump should go Off before 

the water goes below the pump suction. The 

On-Off cycle on models with wide-angle 

float switches is adjustable. Adjustment is 

made by changing the tether length between 

the switch body and the switch tether (pivot) 

point. The tether length cannot be less than 

3” – 3.5”. Tethers less than 3” may not allow 

the float to drop down enough to turn off. 

See "Installation Data".

5.3. 

Install a cover on the sump 

basin if there is a danger 

of debris, children, or pets falling into the 

basin. See Basin “Style” in Section 2.3.

6. SEASONAL SERVICE / MAINTENANCE
6.1.
 If your sump pump only operates seasonally 

and then sits idle for months it is recom-

5. OPERATION

6. SEASONAL SERVICE / MAINTENANCE

mended that you test the pump before your 

rainy season begins. Fill the sump with water 

and check for debris and proper switch 

operation. Remove any debris which could 

clog the suction strainer or jam the switch. 

Insure that the switch operates freely and 

does not hit the sump wall or hang-up on 

piping or power cords.

7. OPTIONS
7.1.
 Your pump supplier has a full line of basins, 

covers, high water alarms, and battery back-

up pump systems available to complete your 

system. We also sell simplex and duplex  

pump control panels. A duplex system is 

recommended when the inflow is constant 

and the pumps run almost continuously. The 

duplex system provides a back-up pump in 

the event the primary pump fails.

8. TROUBLE SHOOTING CHART
Extreme caution should be exercised when ser-

vicing electrical devices. Fatal injuries could re-

sult from electrical shock. Always disconnect the 

electrical power from the device being serviced 

unless it is necessary for the work being done.
MOTOR NOT RUNNING 

(See causes 1, 2, 3, 4, 6, 8)
LITTLE OR NO LIQUID DELIVERED 

(See causes 5, 6, 7, 8, 10)
PUMP WILL NOT TURN OFF 

(See causes 7, 8, 9, 10, 13)
PUMP CYCLES CONSTANTLY

 (See causes 9, 11, 12, 13)
PROBABLE CAUSES:

  1. Tripped thermal protector.

  2. Open Circuit breaker of blown fuse.

  3. Rotating parts binding.

  4. Defective motor.

  5. Air locked.

  6. Low voltage.

  7. System head too high. 

  8. Pump clogged.

  9. Level control defective or switch not 

      properly positioned.

10. Improper check valve direction.

11. Check valve leaking.

12. Incorrect size basin or wet-well.

13. Inflow excessive for size of pump.

8. TROUBLE SHOOTING CHART

7. OPTIONS

WARNING

Summary of Contents for STS21V

Page 1: ...Sump Pumps INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS INSTRUCTION MANUAL IM236 ...

Page 2: ... code The pump must be connected to a dedicat ed electrical circuit protected by a prop erly sized circuit breaker or fuses Install a disconnect where required by code Code questions should be directed to your electrical inspector See Chart 1 for specific information Disconnect electrical power before install ing or servicing the pump The motor s automatic thermal overload protection may allow an ...

Page 3: ... never by the power cord Place the pump against the basin wall so the switch is to the center See Installation Data 3 PIPING 4 INSTALLATION IN SUMP 1 GENERAL INFORMATION 1 1 Sump pumps are designed to operate inter mittently and usually seasonally It is recom mended that you test the pump before your rainy season begins to insure that the pump and switch are operating properly 1 2 We suggest insta...

Page 4: ... debris children or pets falling into the basin See Basin Style in Section 2 3 6 SEASONAL SERVICE MAINTENANCE 6 1 If your sump pump only operates seasonally and then sits idle for months it is recom 5 OPERATION 6 SEASONAL SERVICE MAINTENANCE mended that you test the pump before your rainy season begins Fill the sump with water and check for debris and proper switch operation Remove any debris whic...

Page 5: ...ion Basin Solids Weight Style Diameter Size STS21V 0 25 1 60 115 2 5 amps Vertical 20 1 12 3 16 9 lbs STS31V 0 33 1 60 115 4 5 amps Vertical 20 1 12 3 16 9 lbs MODEL INFORMATION CHART 1 Suggested Pump Positioning in Sump Figure 1 Australian Plug Figure 2 INSTALLATION DATA INSTALLATION DATA MODEL INFORMATION CHART 1 ...

Page 6: ... General Pump Configuration Figure 4 Hose Adapter Figure 5 INSTALLATION DATA INSTALLATION DATA Typical Pump Installation in Sump Figure 3 PUMP ELECTRICAL PLUG CHECK VALVE FLOAT SWITCH UNION PUMPING RANGE ...

Page 7: ...7 NOTES NOTES ...

Page 8: ...for loss caused by interruption of service There are no warranties expressed or implied except such warranties as are definitely set forth herein The Company shall not be liable for damage or wear to pump caused by abnormal conditions failure to properly prime or to operate pump without flow or caused by corrosives abrasives or foreign objects No obligations other than those herein set forth shall...

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