Understand the boundary between systems
The fire pump controller monitors and controls the pump. The fire alarm system receives selected status signals through listed contacts or interface modules and annunciates them as required. Fire alarm technicians should not change controller logic, pressure settings, or internal power wiring unless specifically qualified and authorized.
Common monitored conditions
Typical interfaces may include pump running, controller trouble, phase reversal or phase failure, alternate power source status, and valve supervisory conditions. The exact signals depend on the controller type, power arrangement, adopted code, project specifications, and approved drawings.
Do not rely on terminal numbers from memory. Controller terminal designations vary by manufacturer and model.
Normally open and normally closed logic
Determine the normal contact state with the controller in its normal condition and compare it to the fire alarm module programming. The fire alarm input should supervise the field wiring and report the intended event classification. A contact that changes correctly at the controller can still be misreported because of incorrect module wiring, end-of-line placement, or programming.
Functional testing
Coordinate with the sprinkler or fire pump contractor and building representative. Verify each controller condition using the approved test method, observe the local controller indication, confirm the fire alarm point and event type, verify transmission to the supervising station where required, and restore the controller to normal.
Pump-running tests can involve water flow, noise, pressure changes, generator operation, and mechanical hazards. Follow the site procedure and keep clear of moving equipment.
Troubleshooting a missing signal
Work from the source outward. Confirm the controller actually changes the designated contact. Then verify voltage or continuity at the interface terminals, field module input, address, panel programming, and central-station mapping. Check whether another contractor recently replaced the controller or moved interface conductors.
Documentation
Record controller manufacturer and model, monitored signal, terminal designation from the approved documentation, normal contact state, fire alarm module address, panel event classification, supervising-station result, and who performed the pump-side test. Clear records reduce confusion during future inspections and controller replacements.
Field checklist
- Obtain controller-specific documentation
- Identify every approved monitored signal
- Verify normal contact state and end-of-line supervision
- Coordinate functional testing with pump personnel
- Confirm panel and supervising-station event classification
- Restore controller and fire alarm system to normal
- Update interface records after controller replacement
Important limitation
This guide is a field-oriented starting point, not a substitute for the adopted code, approved drawings, project specifications, manufacturer instructions, site safety procedures, or the authority having jurisdiction. Do not bypass a listed protection feature or leave a required system impaired without following the approved impairment process.