Pre-action valve quarterly maintenance checklist

Monitoring company and owner told before supervisory air is touched

Monitoring company placed on test for the low-air and trouble signals that draining or trim work can raise, the owner told which pre-action zones are involved, and the call logged.

Impairment procedure applied to the pre-action zones for the round

Each zone that loses supervisory air or its release path during the round listed by name in the owner's impairment procedure, with a fire watch in those zones where the procedure calls for one.

Supervisory air and water-supply pressures read

Supervisory air steady at its set pressure and supply water pressure normal at the gauges, neither gauge stuck or pinned, readings noted, and the valve's hold by latch or priming chamber per its type.

Priming and trim valves in their normal positions

Priming line and trim valves set to their marked normal positions, no weeping at the trim, nothing left isolated after prior service.

Supervisory air supply cycling and regulator setting observed

Compressor or nitrogen feed seen topping up supervisory air without running constantly, regulator or air maintenance device at its set point, frequent cycling flagged as a piping leak.

Priming water or priming chamber pressure checked per the valve design

Priming water level at the priming test valve on a clapper-style valve, or priming chamber pressure on a diaphragm-style valve, at what the instruction plate states and not weeping.

Releasing panel status and detection zones observed

Releasing control panel showing normal, no trouble or disabled zones, batteries in supervision, the detection covering the protected space intact and reporting.

Solenoid and manual release station condition observed

Release solenoid energized and its isolation valve open, manual pull or release station in place and unobstructed, no signs the release path has been left disabled.

Interlock type confirmed against the design and panel programming

Non-interlock, single interlock or double interlock arrangement confirmed from the design documents and the releasing panel's programming, so readings and tests are judged against the right sequence.

Detectors in the protected space walked for covers and obstructions

Detectors in the protected space in place, uncovered, unpainted and clear of new storage or partitions, with any change reported to the fire alarm technician who services the detection.

Valve position and supervision checked

Main control valve open and supervised, tamper confirmed reporting to the panel, the reset and operating instruction plate legible at the valve.

Enclosure held above freezing where the space is cold

Valve room or enclosure kept warm where the protected area runs cold, heat operating, so a supervisory-air pre-action set stays dry and doesn't ice at the trim.

Drum drips on the pre-action piping drained where fitted

Where drum drips are fitted, condensate let out in the valve sequence the drip calls for, water found noted by location, and supervisory air watched so it holds above its low-air setting.

Releasing panel normal once the round is done

Releasing panel showing no low-air, trouble or supervisory condition standing, drains and trim valves back in their normal positions, and supervisory air at its usual reading.

Monitoring company and owner told the pre-action zones are restored

Monitoring company confirms signals are reaching them normally and takes the account off test, the owner is told, and any impairment opened for the round is closed in the owner's log.