Pumps

PumpPumps are a key component in most heating systems and when your pump is not working it results in little to no heat. If you have a leaking pump it is often a bad seal and can be repaired without replacing the whole pump. A loud motor is sometimes the result of bad bearings and it can be repaired without replacing the motor. One of the most important maintenance tasks is to pay attention to a pump’s operation. Does it look and sound normal, or has it developed unusual sounds or vibrations? Louder-than-normal or unusual sounds can indicate a range of problems, from misalignment and bad bearings. S&J Jamrog offers complete repair and installation of all pumps and pump motors.

 



PUMPS 101

The resulting costs from pump repairs and disruption to building operations typically exceed the cost of ongoing pump maintenance by a factor of 10 or more. Maintenance activities and the frequency with which they must be performed vary with the capacity of the pump and the nature of the load that it is serving.
An occasional small leak rate is normal, but a sudden flooding of the area near pump shafts indicates that a seal has failed and needs replacing. Excessive heat can indicate a failing bearing or a motor that might need replacing. By checking the pump regularly, we can identify pump problems early, reducing repair costs and disruptions to Pumpoperations.

Beyond periodic checks on pump operations, you should follow the manufacturer’s recommended schedule of maintenance activities. But these are the minimum maintenance requirements. Pumps serving critical applications in a building will require additional maintenance activities if they are to enhance system reliability.




DID YOU KNOW...

Why Do Pumps Fail?
Pump failures fall into four general categories:

  • a defective pump
  • a poor application design
  • improper maintenance
  • poor operating practices

New Pumps
New pump designs and high-efficiency drive motors can improve operating efficiency. For example, by replacing a pump motor with a high-efficiency model, managers can achieve a reduction in energy requirements of 1-5 percent. Similarly, installing a high-efficiency pump can reduce energy requirements 1-3 percent. While these efficiency improvement numbers are relatively small, the typical annual hours of operation for many pump applications can make the resulting savings very significant.

While using higher-efficiency pumps and motors will improve operating efficiency somewhat, the greatest improvements in efficiency come from new designs of pump controls. Traditional pump installations use constant-speed pumps.

 


 

Pump Repairs

 

Circulating Pump Repair

Circulating PumpTypes: Circulating Water Pump, Hot Water Circulating Pump, Centrifugal, wet rotor circulators, in-line, vertical, multi-stage, base mounted, submersible, close coupled & horizontal split case centrifugal pumps.

What it Does: used to circulate gases, liquids, or slurries in a closed circuit. They are commonly found circulating water in a hydronic heating or cooling system. Common places you may find circulating pumps are Radiant In-Floor/Panel Heating, Indirect Domestic Water Heating, Solar Heating, Heat Recovery, Water Source Heat Pumping, Domestic Water Recirculation, Chilled Water Cooling Systems, HVAC, Water Supplies, and Pressure Boosting.

 


 

Centrifugal Pump Repair

Centrifugal PumpClassifications: Centrifugal Water Pump, Vertical Centrifugal Pump, end suction pumps, in-line pumps, double suction pumps, vertical multistage pumps, horizontal multistage pumps, submersible pumps, self-priming pumps, axial-flow pumps, regenerative pumps.

How it works: A centrifugal pump converts the input power to kinetic energy in the liquid by accelerating the liquid by a revolving device - an impeller. The most common type is the volute pump. Fluid enters the pump through the eye of the impeller which rotates at high speed. The fluid is accelerated radially outward from the pump chasing. A vacuum is created at the impellers eye that continuously draws more fluid into the pump.

 


 

Close Coupled PumpClose Coupled Pump Repair

Types: Single Stage, Two Stage, End Suction, In-Line, and Submersible pumps.

How it works: A close coupled pump use’s a built-in electric motor (sometimes a steam turbine), with the motor drive and pump impeller on the same shaft. They are commonly used in chemical processing, hot solvents, caustics and wastewater treatment. Single stage pumps are used for drainage, sewage pumping, general industrial pumping and slurry pumping. Multiple stage submersible pumps are typically lowered down a borehole and used for water abstraction, water wells and in oil wells.