Case Studies

Controllers subjected to Water Exposure

Fire pump controllers at times will be damaged when water infiltrates their enclosure. Read about how non-watertight electrical conduit entry points are often times the culprit. What does NEMA recommend after water has compromised your electrical equipment? Is it okay to apply power after a wet controller has been dried out?

Repairing a Jockey Pump Controller. Is it worth the effort?

Jockey Pumps, or pressure maintenance pumps, are the little brother to a fire pump controller. The jockey pump controller is a relatively inexpensive piece of equipment. When a motor contactor, or thermal overload, or a pressure switch fails, often times it makes more sense to replace the entire controller. Read more to learn the pros & cons of repairing your faulty jockey pump controller.

Upstream Disconnecting Device

Fire pump controllers get their power directly from the utility company. Incoming line circuit breakers can be used should a disconnecting device be desired. However, many rules apply when installing a disconnecting means for a fire pump controller. Read here to learn the nuances of choosing the correct device to fulfill this requirement.

Fire Pump Controller Installations Utilizing Mineral Insulated (MI) Cable

Mineral insulated cable is frequently used when two-hour fire protection is required for power feed conductors to a fire pump controller. This case study helps to understand the nuances when using mineral insulated (MI) cable, and dispels some of the commonly held beliefs.

Wye-Delta Closed or Soft-Starter?

A frequently asked question is: “Which type of starter is better- a wye-delta closed transition, or electronic soft-starter?” This case study details the differences in the two controllers, as well as the advantages and disadvantages of each.