First establish whether one jet, one group or the whole fountain has changed. Record the operating mode, alarms and visible symptoms from a safe position, then use the installed equipment’s service procedure. Do not raise settings or open equipment to hide an unexplained fault.
Stop first when the condition is unsafe
Do not enter the water, remove a grate, open a cabinet or dismantle a pump to investigate a visible change. Unusual noise, repeated alarms, uncontrolled spray or an apparent electrical problem should be handled under the documented stop and escalation procedure. Work on isolated equipment belongs to authorised, qualified personnel.
This guide helps an operator describe a problem. It is not a repair instruction and cannot identify a component fault from a video alone.
Compare the same programme and operating conditions
Different heights can be part of a normal show. Compare the same programme, cue and intended mode against a known normal record before describing the change as a fault. Note whether a reduced-weather mode is active, but do not override it merely to obtain a taller jet.
Separate the symptom into three useful groups
| What changed? | What to record | What it does not prove |
|---|---|---|
| One outlet or effect | Its location, shape, consistency and when the change began. | It does not prove that the nozzle is blocked. |
| A group of effects | Whether the group shares the same cue, circuit or alarm. | It does not identify the failed control or hydraulic component. |
| The whole display | Mode, available operator readings, alarms and any recent change. | It does not establish that a larger pump is needed. |
Possible causes depend on the installed system. Flow restriction, water-supply conditions, equipment wear or control settings may require investigation, but similar visible symptoms can have different causes.
Prepare a support record that reduces guesswork
- Date, time, programme name and whether the symptom repeats at the same cue.
- A short clip taken from a safe viewing point, plus a marked effect location.
- Exact alarm messages and operator-accessible readings already provided by the system.
- Recent cleaning, equipment replacement, programme changes or unusual weather.
- Equipment model and maintenance record if these are available without opening machinery.
Tell the technician whether the effect has gradually changed or changed suddenly. Keep the original programme and settings backed up. Do not repeatedly reset faults or increase pressure, speed or jet height to compensate for an unexplained loss of performance.
Record what was found before returning to service
The service team should identify the cause, the work performed, any replaced part, changed setting and the function checks completed. Compare the same normal mode after the repair. The authorised person should record return-to-service approval under the site procedure.
Use the maintenance planning guide for fault records and spare-part planning. If a system has never achieved its intended effect, revisit the approved design and commissioning evidence instead of treating it automatically as routine maintenance.
Use the correct equipment manual
Grundfos’s pump-support example identifies several possible causes for missing flow and recommends professional help when the issue persists. This is a general reference, not confirmation that your fountain uses that manufacturer or has the same fault. Obtain the manual for the exact installed model before planning service.