Obtain source-specific cycling evidence

Identify the lamp technology, model and applicable instructions. Thermo Fisher's Vanquish manual warns that frequent UV-lamp switching can reduce lamp lifetime for the covered equipment. That example is conditional, not a claim about every optical analyzer or light source. Request applicable restrictions and retained ignition/hour counters where the actual instrument supports them.

Compare lamp-only and complete-system states

Ask whether the analyzer provides an approved lamp standby or on/off function while other electronics remain active. Document what remains powered and which diagnostic or calibration state is retained. A supported lamp command should not be assumed equivalent to cutting the instrument's mains supply. Do not invent an ignition interval, lifetime reduction percentage or remote-control capability.

Retain both lamp operating hours and ignition evidence where available. Two schedules with similar lamp-hours can create different cycling exposure, so comparing only the energy total can miss the central maintenance question.

Judge complete service cost and availability

Compare energy saved during accepted off periods with supported restart requirements, maintenance exposure and the owner's observation schedule. Retain unsuccessful ignition or unavailable-source events in the service record. This decision differs from merely flagging warm-up readings: even a cycle that eventually produces valid data may be an unacceptable maintenance strategy. Give the wind integrator only the approved input states and available control interface. A turbine can contribute energy without managing the lamp, and no MARSTON analyzer hardware, lamp-life guarantee or cycling capability is established here.